Operating Instructions METRAHIT⏐ENERGY TRMS System Multimeter 3-349-576-03 2/11.
Standard Equipment – Contact Persons Scope of Delivery 1 TRMS system multimeter METRAHIT ENERGY (M249A) 1 KS29 measurement cable set (Z229A) 2 Batteries 1 Condensed operating instructions 1 CD ROM (with operating instructions, data sheet and more) 1 DKD calibration certificate 1 Rubber holster and carrying strap Overview Function Power measurement Energy measurement Events recording Power disturbance recording Harmonic analysis Voltage (Ri ≥ 17 MΩ) Voltage (Ri ≥ 9 MΩ) Voltage (Ri ≥ 9 ...
Standard Equipment – Contact Persons Accessories (sensors, plug inserts, adapters, consumable materials) The accessories available for your instrument are checked for compliance with currently valid safety regulations at regular intervals, and are amended as required for new applications.
Standard Equipment – Contact Persons Recalibration Service Our service center calibrates and recalibrates (e.g. after one year as part of your test equipment monitoring system, prior to use etc.) all instruments from GMC-I Messtechnik GmbH and other manufacturers, and offers free test equipment management. Repair and Replacement Parts Service Calibration Center* and Rental Instrument Service If required please contact: GMC-I Service GmbH Service Center Thomas-Mann-Str.
Table of Contents Contents Page Contents Page 1 Safety Features and Precautions ........................................ 7 5 1.1 1.2 1.3 Use for Intended Purpose ................................................................. 9 Meanings of Danger Symbols ........................................................... 9 Meanings of Acoustic Warning Signals .............................................. 9 2 Operating Overview – Connections, Keys, Rotary Switch, Symbols ................................
Table of Contents Contents Page Contents Page Querying Parameters – InFo Menu (as moving letters) ................63 Entering Parameters – SETUP Menu ................................................64 SYSTEM Submenu .........................................................................64 EVEntS Submenu ...........................................................................65 General Parameters ........................................................................66 EnErGY Submenu ..............
Safety Precautions 1 Safety Features and Precautions You have selected an instrument which provides you with high levels of safety. This instrument fulfills all requirements of applicable European and national EC directives. We confirm this with the CE mark. The relevant declaration of conformity can be obtained from GMC-I Messtechnik GmbH. The TRMS digital multimeter has been manufactured and tested in accordance with the following safety regulations: IEC 61010–1:2001 / DIN EN 61010–1/VDE 0411–1:2002.
Safety Precautions • Maximum permissible voltage between the voltage measuring sockets or all connector sockets and ground is 600 V for measuring category III and 300 V for measuring category IV. • Be aware of the fact that dangerous voltage peaks with significant frequency components of greater than 1 kHz are not displayed when the low-pass filter is activated. We recommend measuring voltage without the low-pass filter first, in order to be able to detect any dangerous voltages.
Safety Precautions 1.1 Use for Intended Purpose • The multimeter is a portable device which can be held in the hand during the performance of measurements. • Only those types of measurements described in section 5 may be performed with the measuring instrument. • The measuring instrument, including measurement cables and plug-on test probes, may only be utilized up to the maximum specified measuring category (see page 84 and the table on page 7 regarding significance). • Overload limits may not be exceeded.
Operating Overview – Connections, Keys, Rotary Switch, Symbols 2 Operating Overview – Connections, Keys, Rotary Switch, Symbols 16 → sec. 7 15 sec. 3.1 ← * 1 → sec. 4.3 sec. 6 ← 14 2 → sec. 4.1.2 sec. 3 ← 13 3 → sec. 3 sec. 6← 12 4 → sec. 5 11 5 → sec. 6 sec. 4.4← 6 → sec. 3 ff. 7 → sec. 1.2 8 → sec. 3 9 *→ sec. 4.1 10 sec. 4.1 ← Max.
Operating Overview – Connections, Keys, Rotary Switch, Symbols Symbols Used in the Digital Display 1 2 9 19 18 17 16 15 3 4 5 6 7 8 9 20 21 22 23 24 25 26 272829 10 11 12 13 14 Battery Level Indicator Battery full Battery OK Battery weak Battery (almost) dead, U < 1.
Operating Overview – Connections, Keys, Rotary Switch, Symbols Symbols and Functions for Rotary Switch Positions (MD: main display, AD: auxiliary display, MR: measuring range) Switch V~ m W Wh FUNC Display 0/4 V~AC TRMS / HZ A~AC TRMS (0/2) 1 Hz ~AC TRMS / (1) 2 V filter ~AC TRMS / Hz man 3 dB ~AC TRMS 0/4 V DC / (0/2) 1 V DC+AC TRMS / CF / (1) 2 V DC EVENTS 3 V~AC TRMS EVENTS 0/2 MAinS: V DC+AC TRMS 1 thd % ~AC TRMS / V / thd % ~AC TRMS / A / (0/2) 0/2 MHz 1 % 0/3 Ω 1 nS 2 RPE Ω 0/2 Ω 1 V DC 0/2 °C, type
Operating Overview – Connections, Keys, Rotary Switch, Symbols User Interface Symbols in the Following Sections ... Scroll through main menu ... Scroll through submenu Select decimal point Increase/decrease value time Submenu/parameter (7-segment font) 1nFo Main menu (7-segment font, boldface) EC mark of conformity s IR t Position of the infrared interface, window on the top of the instrument See also section 3.1 regarding location of the power pack adapter socket.
Initial Start-Up – Setup 3 Initial Start-Up 3.1 Inserting Batteries or Rechargeable Batteries Be certain to refer to section 9.2 regarding correct battery installation. Momentary battery voltage can be queried in the Info menu (see section 6.3). ! Attention! Disconnect the instrument from the measuring circuit before opening the battery compartment lid in order to replace the batteries. Operation With Power Pack (not included, see section 10.
Initial Start-Up – Setup 3.4 Switching the Instrument Off Switching the Instrument Off Manually Ð Press the ON / OFF | LIGHT key until 0FF appears at the display. ON / OFF LIGHT Shutdown is acknowledged with a brief acoustic signal. If hazardous contact voltage has been detected (HV symbol appears), the instrument cannot be switched off.
Control Functions 4 Control Functions 4.1 Selecting Measuring Functions and Measuring Ranges The rotary switch is linked to an automatic socket blocking mechanism which only allows access to two jacks per function (exception: the voltage jack is open during current measurement, but a visible red ring warns the user of possible incorrect connection). Be certain to remove the appropriate plug from its respective jack before switching to and from the “A” functions.
Control Functions The instrument is automatically returned to automatic range selection when the MAN / AUTO key is pressed, the rotary switch is activated or the instrument is switched off and back on again.
Control Functions 4.1.4 Quick Measurements (MAN or DATA function) Measurements performed using a suitable fixed measuring range are executed more quickly than those which utilize automatic range selection. Quick measurement is made possible with the following two functions: • Manual measuring range selection, i.e. selection of the measuring range with the best resolution (see section 4.1.2) or • With the DATA function (see section 4.
Control Functions Setting the Reference Value Ð Plug the measurement cables into the instrument and measure a reference value (max. 25,000 digits, or 5000 digits in 10 A range) Ð Briefly press the ZERO | ESC key. The instrument acknowledges storage of the reference value with an acoustic signal, and the “ZERO ΔREL” or the “ΔREL” symbol appears at the LCD. The value measured at the moment the key is pressed serves as a reference value.
Control Functions 4.4 Measured Value Storage: DATA (auto-hold / compare) An individual measured value can be automatically “frozen” with the DATA function (auto-hold). This is useful, for example, when contacting the measuring points with the test probes requires your full attention.
Control Functions Example The voltage measuring range is set manually to 6 V. The first measured value is 3 V and is stored to memory because it is greater than 10% of the measuring range (6000 digits = 0.6 V), and is thus reliably above the background noise level. As soon as the measured value drops to less than 10% of the measuring range (6000 digits), i.e. amounts to less than 6 V which corresponds to removal of the test probes from the measuring point, the instrument is ready to store a new value. 4.4.
Control Functions 4.5 Measurement Data Recording – Memory Mode Operation, STORE Menu Function The system multimeter is capable of recording measurement data using an adjustable sampling rate for long periods of time in the form of measurement series. Data are stored to permanent memory, an68: EnErGY Submenud are retained even after the multimeter is switched off, as well as after battery replacement. Stored measured values can subsequently be read out at the computer.
Control Functions Note The StorE > StArt and StorE > CLEAr menu functions can only be selected a long as memory is not completely full (StorE > StArt), or not completely empty (StorE > CLEAr). Querying Memory Occupancy Memory occupancy can be queried during recording with the help of the “1nFo” menu (see also section 6.3). Memory occupancy range: 000.1% to 099.9%. MEASURE SETUP Ending Recording Ð If the instrument is in the measuring mode, return to the menu function by pressing the MEASURE | SETUP key.
Control Functions 4.5.1 Rapid Momentary Value Acquisition for U DC and I DC Rapid momentary value acquisition is only activated during memory mode operation in the U DC and I DC functions, and only after selecting a sampling period of 0.5, 1, 2, 5, 10, 20 or 50 ms: All trigger and hysteresis functions are available, although the momentary value is acquired with a separate measuring circuit.
Measurements: V/Hz/dB – PQ/ 5 Measurements 5.1 Voltage Measurement Notes Regarding Voltage Measurement • The multimeter may only be operated with installed batteries or rechargeable batteries. Dangerous voltages are otherwise not indicated, and the instrument may be damaged. • The multimeter may only be operated by persons who are capable of recognizing contact hazards and taking the appropriate safety precautions. Contact hazards exist anywhere, where voltages of greater than 33 V (RMS) may occur.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – 5.1.1 Direct Voltage, Pulsating Voltage and Crest Factor Measurement – V DC, V (DC+AC) and CF Note Set the CL iP parameter to 0FF in the current clamp setup menu. Otherwise all measured values are displayed in amperes, corrected by the amount resulting from the selected transformation ratio for an interconnected current clamp sensor. The clamp symbol is also displayed. Refer to section 6.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd Note 60 mV range: Thermovoltages occur in the event of temperature fluctuation, which appear as additional voltage offset. It may be necessary to repeat zero offsetting in order to achieve the specified degree of accuracy. Crest Factor Display Crest factor is displayed for voltages in the V (AC+DC) function along with the measured voltage value.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / Events Recording “EVEntS” CL ip = 0FF ! 20.000 V DC V DC V V V FUNC ENTER Cf: 01.0 20.000 V DC coupling (sampling rate: 0.5 s / 1 ms) Time elapsed since recording start Event value Number of elements AC coupling (sampling rate: 0.
Measurements: V/Hz/dB – PQ/ Note 1 ms sampling is executed with reduced resolution and accuracy (approx. 1% of the measuring range under reference conditions). Events Measurement Parameter – Trigger Thresholds Ð Enter upper threshold H-trig and lower threshold L-trig in digits in the parameter settings menu (see table with examples below): MEASURE SETUP 1nFo ... SET FUNC ENTER system ... events FUNC ENTER events rate DC / events trig FUNC ENTER h-trig set : -60000 ...
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – 5.1.2 Alternating Voltage and Frequency Measurement V AC and Hz with Selectable Low-Pass Filter, V AC + FILTER and dB V AC Note Set the CL iP parameter to 0FF in the current clamp setup menu. Otherwise all measured values are displayed in amperes, corrected by the amount resulting from the selected transformation ratio for an interconnected current clamp sensor. The clamp symbol is also displayed. Refer to section 6.
Measurements: V/Hz/dB – PQ/ The active low-pass filter is indicated by the FILTER display. The multimeter is automatically switched to manual measuring range selection. Specified measuring accuracy is not reached with signals of greater than 100 Hz when the filter is active. VΩ Temp COM ~ – MHz/% – Ω/nS/RSL – / CL ip = 0FF ! 230.00 1 kHz dB V~ & Filter ! Hz AC TRMS FUNC ENTER FILTER Hz 050.00 MAN 230.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – Alternating Voltage Level Measurement (dB) Voltage level measurement is used in order to ascertain overall attenuation or boosting of U1 a transmission system (shown here as a 4pole setup). / – Temp – U2 U2 Voltagelevel [ dB ] = 20 ⋅ log -----U1 Where U1 = UREF (reference level) Result > 1: boosting Result < 1: attenuation Ð Manually select the measuring range for the voltage amplitude.
Measurements: V/Hz/dB – PQ/ 5.1.3 Mains Monitoring / Mains Disturbance Recording – PQ Overview The METRAHIT ENERGY is equipped with an operating mode for mains disturbance recording in the PQ switch position. Input voltage is simultaneously measured with a different measuring circuit to this end. • The RMS value of the applied voltage is measured and displayed continuously. (This measurement corresponds to DC+AC TRMS measurement, see section 5.1.2.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – Parameters Configuration Prior to mains analysis, the function’s parameters have to be configured under SET > MAinS. The following parameters are available: • MAinS.F: Selection of the measuring signal line frequency is required for the calculation of the TRMS half-cycle value: 50 or 60 Hz can be selected. Selection is irrelevant for DC signals. • rAnGE: The 6 V, 60 V or 600 V range (default) can be selected as the voltage measuring range.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd 5.1.4 Mains Disturbance Recording in Memory Mode Operation If memory mode operation is started (see STORE menu function above), further data in addition to those which appear at the display are saved to memory, allowing for computer aided visual assessment: • Regardless of which events occur, (DC+AC) TRMS voltage is continuously recorded with adjustable sampling rate, and in consideration of the selected hysteresis value.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – 5.1.5 Harmonic Analysis (voltage measurement) In the switch positions for the mains quality analysis and current measurement (A) functions, harmonic analysis is performed approximately once per second using 32 averaged sampling values per mains period (adjustable to 16.7, 50, 60 or 400 Hz, see section 6.4.6 on page 71). FFT (fast Fourier transformation) makes oscillations up to the 15th harmonic available to this end.
– MHz/% – Ω/nS/RSL – Measurements: V/Hz/dB – PQ/ PQ Number of events on on 000.002 mains MAN 231.00 Momentary measured value V DC DC AC TRMS 26:04:10 MAN thd: total distortion as % relative to fundamental harmonic V DC AC TRMS Event duration* Event value ON: disturbance persists on 26:04:10 00:22:43 on MAN 000.00 DC AC TRMS V DC AC TRMS Harmonics: 2 ... 15 harm:2 ZERO ESC thd: % % 000 V 000.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd 5.1.6 Frequency and Duty Cycle Measurement Ð Set the rotary switch to MHz or %. MHz MHz Ð Connect the measurement cables as shown. 1.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – 5.2 Resistance, Conductivity and Low-Resistance Measurement Ð Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. Ω /m – W/Wh – A/Hz/thd 000.00 nS Ð Set the rotary switch to “Ω” or “nS”. Ω FUNC ENTER ! Ð Connect the device under test as shown. 0V ! Note Use short or shielded measurement cables in the case of high-impedance resistance.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – 5.2.1 Conductivity Measurement Conductivity measurement works within a range of 15 to 600 nS. “ur” (under range) appears at the display for values below this range, and “OL” appears for value which exceed the range. 5.2.2 Low-Resistance Measurement with Constant Current (RPE) RPE measurement is started by pressing the FUNC key twice with the selector switch in the Ω or nS position: This is a low-resistance measurement within a range of 0.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / 5.3 Continuity Test with Constant Current of 1 mA Ð Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. Ω . FUNC ENTER Ð Connect the conductor path under test as shown. “0L” appears at the display in the case of an open connection. Open circuit voltage is approximately 3 V.
– MHz/% – Ω/nS/RSL – Measurements: V/Hz/dB – PQ/ / – Temp – /m – W/Wh – A/Hz/thd 5.4 Diode Testing with Constant Current of 1 mA Ð Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. 000.8 Ð Make sure that the device under test is voltage-free. Interference voltages distort measurement results! Refer to section 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement.
Measurements: V/Hz/dB – PQ/ 5.5 Temperature Measurement Temperature measurement is performed with a type K thermocouple or a type Pt100 or Pt1000 resistance sensor (accessory, not included) which is connected to the voltage input. Refer to section 6.4 regarding selection of the temperature unit of measure. – MHz/% – Ω/nS/RSL – Ð Either the internal reference junction or an external reference temperature can be specified as the reference temperature (see section 6.4.3). Type (“I.” for internal or “E.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd 5.5.2 Measurement with Resistance Sensors Ð Set the rotary switch to “TempTC” or “TempRTD”. Temp TC The last selected temperature measurement or last selected temperature sensor, i.e. type K or Pt100/Pt1000, remains in memory and is displayed. Press the FUNC | ENTER key in order to change to the other measuring function. The sensor type, i.e. Pt100 or Pt1000, is detected automatically and displayed.
– MHz/% – Ω/nS/RSL – / – Temp – 5.6 Measuring Capacitance and Cable Length in km Ð Disconnect supply power from the electrical circuit of the device to be measured, and discharge all high-voltage capacitors. Ð Make sure that the device under test is voltage-free. Capacitors must always be discharged before measurement is performed. Interference voltages distort measurement results! Refer to section 5.1.1 regarding testing for the absence of voltage with the help of the direct voltage measurement.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / 5.6.1 Cable Length Measurement in m In the cable length measuring mode, the instrument calculates length as a function of the capacitance value entered by the user: Length (km) = measured capacitance (nF) capacitance value (nF / km) – Temp – /m – W/Wh – A/Hz/thd Note When measuring cable length, make sure that the cable parameters (e.g. cross-section) are identical.
Measurements: V/Hz/dB – PQ/ 5.7 Measurement of Active, Apparent and Reactive power – W, VA, VAr Measurement of Active, Apparent and Reactive Energy – Wh, VAh, VArh The METRAHIT ENERGY is a compact power meter for direct and alternating current in single-phase systems. The current path can be measured directly (up to 10 A, max. 5 min., up to 16 A briefly for max. 30 s), or with the help of current transformers or current clamp transformers.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – Use current clamp transformers only. Power measurement is not possible with current clamp sensors equipped with voltage output. / – Temp – /m – W/Wh – A/Hz/thd Measurement of Active, Apparent and Reactive Power, and Power Factor – W, VA, VAr, PF V Ω Temp COM mA A W Wh Note: See also section 4.5.2, "Power and Energy Measurement in the Memory Mode”.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd Measurement of Momentary, Minimum and Maximum Values for Active, Reactive and Apparent Power pf:0.00 000.0 mV 000.0 mA Momentary Values 000.00 μ DC W AC TRMS 000.00 μ VA W 000.0 mV 000.0 mA DC VA AC TRMS 000.00 μ VAr DC VAr AC TRMS W MAN / AUTO DATA/MIN/MAX Wh MAN / AUTO DATA/MIN/MAX 24:02:10Min.04:21:56 Minimum Values 000.00 μ DC AC TRMS 24:02:10Min.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – Measurement of Active, Apparent and Reactive Energy – Wh, VAh, VArh The instrument can be switched back and forth between energy and power measurement by pressing the FUNC | ENTER key. Energy measurement begins as soon as power or energy measurement has been started. Measured values resulting from power or energy measurement can be reset by pressing and holding the ZERO | ESC key for longer than 1 second.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd Measurement of Energy Values, and Mean Power Values for Active, Reactive and Apparent Power W>Wh FUNC ENTER Energy Values energy 00:00:00 On 000.00 μ DC Wh AC TRMS energy 00:00:00 On 000.00 μ VA Wh DC VAh AC TRMS energy 00:00:00 On 000.
Measurements: V/Hz/dB – PQ/ 5.8 – MHz/% – Ω/nS/RSL – / – Temp – Current measurement Notes Regarding Current Measurement • The multimeter may only be operated with installed batteries or rechargeable batteries. Dangerous currents are otherwise not indicated, and the instrument may be damaged. • Set up the measuring circuit in a mechanically secure fashion, and secure it against inadvertent breaks. Select conductor cross-sections and lay out connections such that they do not overheat.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd 5.8.1 Direct Current Measurement Ð Switch supply power to the measuring circuit back on (3). Measurement of Pulsating, Direct and Alternating Current, and Frequency A (DC+AC), A DC and A AC/Hz Direct, and Total Harmonic Distortion Ð First disconnect supply power from the measuring circuit or the power consumer (1), and discharge any capacitors. See circuit diagram on next page. Ð Read the display.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd Harmonic Analysis – Total Harmonic Distortion THD With 32 sampled values per mains period (16.7; 50; 60 or 400 Hz can be selected in the menu), harmonic analysis is executed approximately once per second. FFT (fast Fourier transformation) makes oscillations up to the 15th harmonic available to this end. These are used to calculate the RMS values of the fundamental harmonic (HD 1) and the individual higher harmonics (HD 2 .
Measurements: V/Hz/dB – PQ/ CL ip = 0ff Cf: 01.0 * 24.6°C 000.00 A A μ A / ! – MHz/% – Ω/nS/RSL – A measuring range: 600 μA / 6 mA 60 mA / 600 mA 6 A* / 10 A* (16 A max. 30 s) AC TRMS ! thd: total distortion as percentage relative to fundamental harmonic * Additional temperature display (internal temperature at jacks) in the 6 A and 10 A ranges GMC-I Messtechnik GmbH 2 1 DC 3 ~ Rx Rx FUNC ENTER 000.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd 5.8.2 Current Measurement with Current Clamp Sensor Voltage/Current Transformer Output When a current clamp sensor is connected to the system multimeter (V input), all current displays appear with the correct value in accordance with the selected transformation ratio.
Measurements: V/Hz/dB – PQ/ Alternating Current Measurement with Current Clamp Sensor – A AC and Hz CL ip ≠ 0FF ! 050.00 Hz V~ 1kHz dB Hz 100.50 A 1:1000 AC TRMS – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd Harmonic Analysis with Current Clamp Sensor – thd and A AC CL ip ≠ 0FF ! thd: [PQ] A~ % FUNC ENTER 0001:1000 A 000.0 AC TRMS MAN / AUTO DATA/MIN/MAX 1:1000 050.
Measurements: V/Hz/dB – PQ/ – MHz/% – Ω/nS/RSL – / – Temp – /m – W/Wh – A/Hz/thd 5.8.3 Current Measurement with Current Clamp Transformer Alternating Current Measurement and Total Harmonic Distortion, Direct and Pulsating Current – A AC and thd, A DC, A AC+DC Current/Current Transformer Output When a current clamp transformer is connected to the multimeter ( mA/A input) all current displays appear with the correct value in accordance with the selected transformation ratio.
Measurements: V/Hz/dB – PQ/ CLiP = 1:1/10/100/1000 000.00 Hz A A / ! Current measurement may only be performed with installed batteries! A measuring range: 60 mA / 600 mA / 6 A to 0.7 A continuous 10 A 5 min COM mA A % 000.0 Rx GMC-I Messtechnik GmbH A~ AC TRMS MAN / AUTO DATA/MIN/MAX HArM harm:1 % 00.0 A 100.0 FUNC ENTER AC TRMS HArM:1 RMS value of the fundam. harmonic in A 100% for fundam. harmonic Harmonics: 2 ... 15 harm:2 Cf: 01.0 1:1000 DC 00.000 AC TRMS A % 00.0 A 000.
Device and Measuring Parameters 6 Device and Measuring Parameters The instrument’s “SET” mode (menu mode) makes it possible to set operating and measuring parameters, query information and activate the interface. Ð The menu mode is accessed by pressing the MEASURE | SETUP key, assuming that the instrument is switched on and set to “Measure” (measuring mode operation). “1nFo” appears at the display. Ð The main menus, i.e.
Device and Measuring Parameters 6.1 Paths to the Various Parameters Cf: 01.0 200.00 V DC AC TRMS MEASURE SETUP 1nfo Main Menus → 1nFo SET SEnd StorE FUNC ENTER FUNC ENTER FUNC ENTER FUNC ENTER Select / set Set Submenus / parameters ↓ Query bAtt: 0CCvP: t iME//date: ver/caldat: tEMP intern: Select / set tiMe, dAtE, Addr, irStb , APoFF, blight,0.
Device and Measuring Parameters 6.2 List of all Parameters, Main Menus and Submenus Menus Parameters 0.disp Addr APoFF bAtt bEEP blight Cap CLEAr CLAMP dAtE dBrEF Page: Header 65: 76: 64: 63: 66: 65: 66: 22: 66: 63: 66: demandtime 68: diplimit 69: energy 68: energyStore 68: 65: events 71: harm 69: hivolt hyst 73: 1nfo 63: irStb 76: lovolt 69: 69: mains 69: mains.f mainsRange 69: 0CCvP 63: 72: rAtE 66: r_sl SEnd 75: SET 64: StArt 22: StoP Store 72: 62 0.
Device and Measuring Parameters Menus Page: Header Menu / Submenu Function / Switch Position Parameters Swell system tEMPintern tEMPintern tEMpunit t iME trig tstore vErSion 69: 64: 63: 67: 66: 63: 73: 74: 63: SEt/MAinS SEt/SYStEM InFo SEt SEt SEt/SYStEM StorE StorE InFo 6.
Device and Measuring Parameters 6.4 Entering Parameters – SETUP Menu 6.4.1 SYSTEM Submenu Addr – Set Device Address See section 7.2 on page 76. tiME – Set Time Entering the correct time makes it possible to acquire measured values in real-time. irStb – Status of the Infrared Receiver in the Stand-By Mode See section 7.2 on page 76 regarding settings. MEASURE SETUP 1nFo ...
Device and Measuring Parameters bLiGht – Disable Deactivation of Background Illumination If necessary, automatic deactivation of background illumination can be disabled with this parameter setting or via the interface. MEASURE SETUP 1nFo ... SET FUNC ENTER system t iME ... system blight blight set: apoff / on system FUNC ENTER FUNC ENTER FUNC ENTER 0.diSP – Show/Hide Leading Zeros This parameter determines whether or not leading zeros will appear in the measured value display. 1nFo ...
Device and Measuring Parameters 6.4.3 General Parameters CAP – Scaling Factor for Cable Length Measurement (capacitive linear electric constant) CLiP – Set Transformation Ratio (current clamp factor) MEASURE SETUP FUNC ENTER 1nFo ... SET FUNC ENTER system ... CL IP CL IP set: 1 /10/100/1000 / 0ff FUNC ENTER FUNC ENTER FUNC ENTER 1nFo ... SET FUNC ENTER system ... bEEP bEEP set: 001, 010, 020 ... 500 Ω FUNC ENTER in 10 Ohm steps FUNC ENTER FUNC ENTER (0.
Device and Measuring Parameters tEMP intErn/ExtErn – Select Internal or External Reference Junction External Reference Junction: Specified Temperature MEASURE SETUP FUNC ENTER 1nFo ... SET FUNC ENTER system ... tEMP intern tEMP set: tEMP intern / tempextern extern set: 000..
Device and Measuring Parameters 6.4.4 EnErGY Submenu dEMAnd tiME – Time Interval for Mean Value Generation (parameter for power measurement in memory mode) The dEMAnd tiME parameter specifies the length of the time period during which measured power is averaged for the display of a mean power value (see section 5.7 on page 47). MEASURE SETUP FUNC ENTER 1nFo ... SET system ... energy demand time : 00..01 /00..02/00..05/00..10/00..15/00..20/00..30/ 01..
Device and Measuring Parameters 6.4.5 MAinS Submenu MAinS – Mains Disturbance Recording Parameter MEASURE SETUP 1nFo ... SET FUNC ENTER system ... mains MAinS.F – Select Line Frequency Selection of the measuring signal line frequency is required for the calculation of the TRMS half-cycle value: FUNC ENTER mains.f set : 50/60 Hz MAinS rAnGE – Select a Measuring Range for Mains Disturbance Recording Mains disturbance recording takes place within the specified, fixed measuring range.
Device and Measuring Parameters PEAK LiMit – Maximum Peak Value for Measuring Voltage The momentary value of the applied signal is measured 1200 times per second and compared with the limit selected here (independent of polarity). If this value exceeds the selected limit, a +/– PEAK event is recorded for the respective half-cycle, and the peak voltage value of the half-cycle is then displayed.
Device and Measuring Parameters 6.4.6 HArM Submenu HArM – Harmonic Analysis Parameter In order to analyze the measuring signal’s harmonics, its fundamental frequency must be specified wit the HARM.F parameter. Due to the fact that the MAN key is used for another purpose in the harmonic analysis function, it cannot be used to switch back and forth between automatic and manual range selection. For this reason, the U.ranGE and I.ranGE parameters are used to specify a measuring range for harmonic analysis: • U.
Device and Measuring Parameters 6.4.7 StorE Submenu – Parameters for Memory Mode Operation rAtE – Transmission and Storage Rate The sampling rate specifies the time interval after which the respective measured value is transmitted to the interface, or to measured value memory. The following rates (ms values) can be selected: 0.0005 s, 0.001 s, 0.002 s, 0.005 s, 0.01 s, 0.02 s, 0.05 s (valid for V DC and A DC only, see section 4.5.1 on page 24) [mm:ss.z] 00:00.1, 00:00.2, 00:00.5, 00:01.0, 00:02.0, 00:05.
Device and Measuring Parameters HYSt – Hysteresis (parameter for memory mode operation) The hysteresis setting allows for efficient use of memory space. During memory mode operation, new measured data are only saved if they deviate from the previously stored value by an amount which exceeds the selected hysteresis value. Hysteresis can be selected in steps from 1 to 10,000 digits.
Device and Measuring Parameters Actual measurement is always executed using the sampling rate selected in “Store > rAtE”. MEASURE SETUP 1nFo ... store FUNC ENTER ... trig FUNC ENTER trig set : sto-ou / sto-in / off FUNC ENTER l_trig set : -300000 ... +300000 FUNC ENTER h_trig set : -300000 ... +300000 Ð Disconnect the device from the measuring circuit.
Interface Operation 7 Interface Operation Your instrument is equipped with an infrared interface: Data and commands are transferred through the instrument housing by means of infrared light to an interface adapter (accessory) which is plugged onto the multimeter and connected to a PC via USB. The multimeter can be controlled by the PC via this interface without any action required from the user (e.g.
Interface Operation 7.2 Configuring Interface Parameters 1rStb – Status of the Infrared Receiver in the Stand-by Mode There are two possible switching statuses for the infrared interface when the multimeter is switched off: on: IR appears at the display and the infrared interface is active, i.e. signals such as making commands can be received, and power is consumed even though the multimeter is switched off.
Technical Data 8 Technical Data Meas. Function Measuring Range V 60 mV 600 mV 6 V 60 V 600 V dB A A A Ω nS RPE Resolution at Upper Range Limit 60,000 6,000 1 μV 10 μV 100 μV 1 mV 10 mV 0.6 ... 600 V~ 0.
Technical Data Meas. Function F Hz (V) Hz (A) Hz (A ) Hz (V) MHz Measuring Range 60 600 6 60 600 nF nF μF μF μF 600.00 Hz 6.0000 kHz 60.000 kHz 300.00 kHz 600 Hz ... 1 MHz 2.0 ... 98 % % Resolution at Upper Range Limit 60,000 6,000 — — — — — 10 100 1 10 100 pF pF nF nF nF Intrinsic Uncertainty under Reference Conditions for High Resolution (59,999 digits) Discharge res. 1 MΩ 100 kΩ 12 kΩ 12 kΩ 3 kΩ 0.01 Hz 0.1 Hz Input impedance, 1 Hz V jack: Ri = 9 MΩ 10 Hz 0.01 ... 100 Hz — 0.01 % 15 Hz ...
Technical Data Additional error caused by the signal’s crest factor: ≥ 1,5 < CF ≤ 3 1% rdg. ≥ 3 < CF ≤ 5 3% rdg. Crest Factor CF Measuring range: 1.0 ≤ CF ≤ 11.0, resolution: 0.1 Typical (not specified) maximum deviation: Frequency 10 to 70 Hz 70 to 440 Hz 440 Hz to 1 kHz > 1 kHz CF ≤ 3.0 ±02 ±02 ±05 Not valid 3.0 < CF ≤ 5.0 ±0.2 ±0.5 Not valid Not valid 5.0 < CF ≤ 10.0 ±0.
Technical Data Intrinsic Uncertainty and Frequency Influence for Power and Energy Measurement Measured Quantity Intrinsic Uncertainty ±(... % rdg + ... d) Measuring Range DC 10 Hz ... 65 Hz 65 Hz ... 1 kHz Voltage, auxiliary display U ≥ 0.1 x Umax and U ≥ 0.15 V 0.5 + 10 0.3 + 10 0.4 + 10 1 Current, auxiliary display I ≥ 0.01 x Imax Additional deviation for U, I during power measurement with higher crest factor, f = 0 … 65 Hz: CF = 2: -0.3% rdg., CF = 3: -0.9% rdg., CF = 4: -1.5% rdg.
Technical Data Influencing Quantities and Influence Error Influencing Quantity Sphere of Influence Measured Quantity/ Measuring Range 1 60 mV Temperature 0.1 + 5 600 mV 0.3 + 20 V , 6 ... 600 V 0.2 + 10 600 Ω ... 60 MΩ, nS 0.2 + 5 A , 0.2 + 10 60 nF ... 6 μF, km 1+5 0 °C ... +21 °C 60, 600 μF and +25 °C ... +40 °C Hz, dB Diode measurements RPE measurement 1 600.00 mV Frequency 6.0000 V ... 60.00 V 3+5 0.5 + 10 0.2 + 10 Power measurement: V 0.3 + 10 Power measurement: A 0.
Technical Data Influencing Quantity Sphere of Influence Measured Quantity/ Measuring Range Interference quantity max. 600 V Common mode interference voltage Interference quantity max. 600 V 50 Hz ... 60 Hz, sine Series-mode interference voltage V 6V , 60 V Damping > 120 dB > 80 dB 600 V > 70 dB Interference quantity V , respective nominal value of the measuring range, max. 600 V , 50 Hz ... 60 Hz, sine V > 50 dB Interference quantity max.
Technical Data Power Supply Battery Service life Battery Indicator Power OFF function Power pack socket GMC-I Messtechnik GmbH 2 each 1.5 V AA batteries, alkaline manganese per IEC LR6 (2 each 1.2 V NiMH rechargeable batteries also possible) With alkaline manganese: approx. 120 hrs. Battery capacity display with battery symbol in 4 segments: . Querying of momentary battery voltage via menu function. The multimeter is switched off automatically: – When battery voltage drops below approx. 1.
Technical Data Acoustic Signals For voltage For current Fuse Fuse link Intermittent signal at above 600 V Intermittent signal at above 10 A Continuous signal at above 16 A FF (UR) 10 A/1000 V AC/DC; 10 mm x 38 mm; breaking capacity of 30 kA at 1000 V AC/DC; protects the current measurement input in the 600 μA to 10 A ranges Electrical Safety Per IEC 61010-1:2001/VDE 0411-1:2002 II Protection class Measuring category CAT III CAT IV Operating voltage 600 V 300 V Pollution degree 2 Test voltage 5.
Maintenance – Calibration 9 Maintenance and Calibration ! 9.1 Attention! Disconnect the instrument from the measuring circuit before opening the battery compartment lid or fuse cover in order to replace batteries or fuses! Displays – Error Messages Message Function FUSE Current measurement Blown fuse In all operating modes Battery voltage has fallen below 1.
Maintenance – Calibration Replacing the Batteries ! Attention! Disconnect the instrument from the measuring circuit before opening the battery compartment lid in order to replace the batteries. If the fuse is blown or has not been inserted, “FuSE” appears at the digital display. The fuse interrupts the current measuring ranges. All other measuring ranges remain functional. fuse Ð Set the instrument face down onto the working surface.
Maintenance – Calibration ! Attention! Use specified fuses only! If fuses with other blowing characteristics, other current ratings or other breaking capacities are used, the operator is placed in danger, and protective diodes, resistors and other components may be damaged. The use of repaired fuses or short-circuiting the fuse holder is prohibited. 9.4 Housing Maintenance No special maintenance is required for the housing. Keep outside surfaces clean. Use a slightly dampened cloth for cleaning.
Maintenance – Calibration We are pleased to perform DKD or factory calibrations for you in our calibration laboratory. Please visit our website at www.gossenmetrawatt.com (→ Services → DKD Calibration Center or → FAQs → Calibration questions and answers). By having your measuring instrument calibrated regularly, you fulfill the requirements of a quality management system per DIN EN ISO 9001. * Verification of specifications or adjustment services are not part of the calibration.
Accessories 10 Accessories 10.1 General The extensive accessories available for our measuring instruments are checked for compliance with currently valid safety regulations at regular intervals, and are expanded as required for new applications.
Accessories 10.4 PMA 16 Power Measuring Adapter (Z228A: not included) The PMA 16 power measuring adapter is an intermediate plug for safe, trouble-free measurement of power consumption of singlephase consumers connected by means of a plug. The power consumer’s protective conductor remains functional during measurement.
Glossary 11 Glossary – Abbreviations of Measuring Functions and Measuring Parameters with their Meanings Descriptions of the following measuring functions and their use are included in section 5. Descriptions of the following measuring parameters and their settings are included in section 6. Descriptions of device parameters and their settings (which are not listed here) are included in section 6.
Glossary Abbreviation (Sub) Menu Parameter Meaning General Description Description Specifically for this Instrument EVEntS Submenu for events recording parameters An event is recorded whenever at least one measured value has fallen short of the L-trig threshold Events recording for at least one second, and subsequently at least one measured value has exceeded the H-trig page 28 threshold for at least one second.
Glossary Abbreviation (Sub) Menu Parameter Meaning L_triG Lower trigger threshold See StorE MAinS Application Chapter / Page Switch Position / Menu Selective memory mode operation section 4.5 All StorE menu > triG Submenu for power disturbance analysis parameters Parameters: Power disturbance MAinS.F, MAinS rAnGE, LoVolt LiMit, HiVolt LiMit, diP LiMit, SWELL LiMit, PEAK LiMit, trAnS LiMit analysis section 5.1.
Glossary Abbreviation (Sub) Menu Parameter Meaning General Description Description Specifically for this Instrument Application Chapter / Page Switch Position / Menu StorE Main memory for memory mode operation Parameters: HYSt, rAtE, Sto-ou, Sto-in, L_triG, H_triG, t.StorE Memory mode operation section 4.5 All StorE menu SWELL Overvoltage If the TRMS half-wave value exceeds the specified limit, a brief overvoltage (swell) is detected.
Index 12 Index 0.diSP ................................................................... 65 A Active Power ........................................................ 47 Addr ...................................................................... 76 APoFF ................................................................... 64 Apparent Power ................................................... 47 Automatic Shutdown Disabling ..................................................... 15 Specifying a Time ............
Index O OCCUP .................................................................. 63 Overview Keys and Connections ................................ 10 Parameters .................................................. 62 Overvoltage .......................................................... 34 P Peak Value Monitoring ......................................... 17 Potentially Explosive Atmospheres ........................ 7 Power Factor ........................................................
GMC-I Messtechnik GmbH 97
Edited in Germany · Subject to change without notice · PDF version available on the Internet GMC-I Messtechnik GmbH Südwestpark 15 90449 Nürnberg, Germany Phone: +49 911 8602-111 Fax: +49 911 8602-777 e-mail: info@gossenmetrawatt.com www.gossenmetrawatt.
