233 True-rms Remote Display Digital Multimeter Users Manual By Thomas Smith at 2:48 pm, Nov 18, 2009 September 2009 © 2009 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. All product names are trademarks of their respective companies.
LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defects in material and workmanship for three years from the date of purchase. This warranty does not cover fuses, disposable batteries, or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling. Resellers are not authorized to extend any other warranty on Fluke’s behalf.
Table of Contents Title Page Introduction .................................................................................................................... How to Contact Fluke ..................................................................................................... Safety Information .......................................................................................................... Warnings and Cautions ...............................................................................
233 Users Manual How to Make Measurements ......................................................................................... AC and DC Voltage Measurements .......................................................................... Resistance Measurements ....................................................................................... Temperature Measurements..................................................................................... Continuity Tests ...................................
Contents (continued) Frequency ................................................................................................................. 43 Input Characteristics.................................................................................................. 43 MIN MAX Recording..................................................................................................
233 Users Manual iv
List of Tables Table 1. 2. 3. 4. 5. 6. 7. 8. Title Page Electrical Symbols ................................................................................................................. Display................................................................................................................................... Inputs .................................................................................................................................... Function Switch Positions...............
233 Users Manual vi
List of Figures Figure 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. Title Page AC and DC Voltage Measurements ...................................................................................... Resistance Measurements .................................................................................................... Continuity Tests..................................................................................................................... Diode Test ...........................................
233 Users Manual viii
Introduction The Fluke 233 (hereafter the Meter) is a compact and easy to operate tool for electrical and electronic circuit measurements. XWWarning Read "Safety Information" before you use the Meter.
233 Users Manual Safety Information Warnings and Cautions The Meter complies with: • • • • • • • • • ISA-82.02.01 CAN/CSA C22.2 No. 61010-1-04 ANSI/UL 61010-1:2004 EN 61010-1:2001 EN 61326-1:2006 EN 61326-2-2:2006 ETSI EN 300 328 V1.7.1:2006 ETSI EN 300 489 V1.8.1:2008 FCC Part 15 Subpart C Sections 15.207, 247 FCCID: T68-F233 15.209, 15.
True-rms Remote Display Digital Multimeter Safety Information • Remove the test leads from the Meter before the battery door on the Meter base is opened. • Examine the test leads for damaged insulation or exposed metal. Measure the test leads for continuity. Replace damaged test leads before you use the Meter. • Do not apply more than the rated voltage, shown on the Meter, between the terminals or between a terminal and earth ground.
233 Users Manual • 4 Use only specified 1.5-V AA batteries (three in the Meter base and two in the display), correctly installed, for Meter power. • Comply with local and national safety requirements when in hazardous locations. • Only use test leads that have the same voltage, category, and amperage ratings as the Meter and that are approved by a safety Agency. • Measure a known voltage first to make sure that the Meter operates correctly. If you are unsure, have the Meter examined.
True-rms Remote Display Digital Multimeter Safety Information Radio Frequency Data Note Changes or modifications to the wireless 2.4 Meter GHz radio not expressly approved by Fluke Corporation could void the user’s authority to operate the equipment. This device complies with Part 15 of the FCC Rules.
233 Users Manual Hazardous Voltage When the Meter senses a voltage ≥30 V or a voltage overload (), the symbol is shown on the display and the red high-voltage LED on the Meter base illuminates to tell you a hazardous voltage is at the Meter input. For frequency measurements >1 kHz, the symbol and highvoltage LED is unspecified. Test Lead Alert XWWarning To prevent personal injury or damage to the Meter do not make a measurement with a test lead in an incorrect terminal.
True-rms Remote Display Digital Multimeter Test Lead Alert Table 1. Electrical Symbols B AC (Alternating Current) F DC (Direct Current) I Fuse X Hazardous voltage P Conforms to European Union directives. W Risk of Danger. Important information. See Manual. ) Conforms to relevant Canadian Standards Association directives. Battery. Low battery when shown. T Double insulated R Continuity test or continuity beeper tone.
233 Users Manual Features See Tables 3 through 4 for a list of Meter features with a short feature description. Table 2. Display 2 1 4 3 5 14 13 6 12 meter 11 Auto RangeManual Range remote 10 7 9 8 gcc101.eps 8 No. Symbol 1 2 MAX MIN AVG 3 Indication MIN MAX AVG mode on. Maximum, minimum, or average measurement shown. Display hold on. Display freezes the measurement.
True-rms Remote Display Digital Multimeter Features Table 2. Display (cont.) No. Symbol 4 5 °C, °F 6 A Indication Radio connection indicator. degrees Celsius, degrees Fahrenheit amperes (amps) V, mV volts, millivolts μF, nF microfarad, nanofarad DC AC Direct current or alternating current. Ω, MΩ, kΩ Hz, kHz ohm, megohm, kilohm hertz, kilohertz 7 remote Battery low warning for the display module. 8 Manual Range 9 Auto Range Auto range set.
233 Users Manual Table 3. Inputs 1 3 2 gcc110.eps No. Terminal 1 A 2 COM Common terminal for all measurements. 3 Input for voltage, continuity, resistance, diode, capacitance, temperature, and frequency measurements. 10 Description Input for 0 A to 10.00 A current measurements.
True-rms Remote Display Digital Multimeter Features Table 4. Function Switch Positions Switch Position Hz (button) e Hz (button) Description AC voltage from 0.06 to 1000 V. Frequency from 5 Hz to 50 kHz. DC voltage from 0.001 V to 1000 V. AC voltage from 6.0 to 600.0 mV, dc-coupled. DC voltage from 0.1 to 600.0 mV. Ohms from 0.1 Ω to 40 MΩ. Continuity beeper turns on at <20 Ω and turns off at >250 Ω. Farads from 1 nF to 9999 μF. Diode Test.
233 Users Manual Error Messages Table 5 contains possible error messages and the steps to clear the error. Table 5. Error Messages Error Messages Display-module batteries must be replaced before the Meter will operate. Meter-base batteries must be replaced before the Meter will operate. Calibration necessary. Meter calibration is necessary before the Meter will operate. Internal error. The Meter must be repaired before it will operate.
True-rms Remote Display Digital Multimeter Battery Saver™(Sleep Mode) Battery Saver™(Sleep Mode) The Meter powers-down (Sleep mode) if there is no function change, range change, or button push for 20 minutes. The lowest power drain occurs when the display module is docked with the Meter base. With the display module removed from the Meter base, the power drain is more because the radios are turned on. To wake up the Meter, push a button or turn the function switch.
233 Users Manual 2. Display Hold XW Warning To prevent electrical shock, when Display HOLD is on, disable Display HOLD to measure the voltage that is possibly different than the Display HOLD measurement. Display HOLD freezes the display. 1. Push to activate Display HOLD. ( is shown.) 2. To exit and start normal operation, push or turn the function switch. Manual and Autoranging The Meter has Manual and Autorange modes.
True-rms Remote Display Digital Multimeter Backlight Backlight Push to toggle the backlight on and off. The backlight automatically extinguishes after 40 seconds. To disable backlight auto-off, hold down while turning the Meter on. Power-Up Options Hold a button down while the function switch is moved from the OFF position to set a power-up option. The power-up options cancel when the function switch is moved to OFF or the Meter goes into Sleep mode. See Table 6 for all power-up options. Table 6.
233 Users Manual How to Make Measurements AC Voltage The sections that follow tell how to make measurements with the Meter. Switch Box To connect the test leads to the circuit or device, connect the common (COM) test lead first. To remove the test leads, remove the common test lead last. AC and DC Voltage Measurements The voltage ranges are 600.0 mV, 6.000 V, 60.00 V, 600.0 V, and 1000 V. To set the 600.0 mV dc or ac range, turn the function switch to . Millivolts ac is set first.
True-rms Remote Display Digital Multimeter How to Make Measurements Resistance Measurements WCaution To prevent possible damage to the Meter or to the equipment under test, disconnect power and discharge all high-voltage capacitors before resistance measurements. current in the next higher range. If the value is higher, use the higher value. Refer to the Input Parameters table in the specifications section for typical shortcircuit currents.
233 Users Manual In-Circuit Resistance Measurements Isolating a Potentiometer Circuit Power OFF 1 3 2 Disconnect 2 1 3 Isolating a Resistor Disconnect gcc106.eps Figure 2.
True-rms Remote Display Digital Multimeter How to Make Measurements Temperature Measurements The Meter measures the temperature of a type-K thermocouple (included). Choose between degrees Celsius (°C) or degrees Fahrenheit (°F) by pushing C. W Caution To prevent possible damage to the Meter or other equipment, use a thermocouple rated for the temperatures to be measured. The Meter is rated for -40.0 °C to +400.0 °C and -40.0 °F to 752 °F, but the included type-K thermocouple is rated to 260 °C.
233 Users Manual For in-circuit tests, turn circuit power off. ON (closed) OFF (open) Activates continuity beeper gcc103.eps Figure 3.
True-rms Remote Display Digital Multimeter How to Make Measurements Diode Tests WCaution To prevent possible damage to the Meter or to the equipment under test, disconnect power and discharge all high-voltage capacitors before a diode test. Do a diode test on diodes, transistors, silicon controlled rectifiers (SCRs), and other semiconductor devices. This function sends a current through the semiconductor junction and then measures the voltage drop across the junction.
233 Users Manual Forward Bias Typical Reading Reverse Bias + + Single Beep Shorted Bad Diode Open or gcc109.eps Figure 4.
True-rms Remote Display Digital Multimeter How to Make Measurements Capacitance Measurements WCaution To prevent possible damage to the Meter or to the equipment under test, disconnect power and discharge all high-voltage capacitors before capacitance measurements. Use the dc voltage function to make sure that the capacitor is discharged. Select Capacitance Capacitance ranges are 1000 nF, 10.00 μF, 100.0 μF, and 9999 μF. To measure capacitance, set up the Meter as shown in Figure 5.
233 Users Manual AC and DC Current Measurements XWWarning To prevent possible electrical shock or personal injury, do not make an in-circuit current measurement where the open-circuit potential to earth is >1000 V. Meter damage or injury can occur if the fuse blows during such a measurement. WCaution To prevent possible damage to the Meter or to the equipment under test: • Do a fuse test before current measurements. • Use the correct terminals, function, and range for all measurements.
True-rms Remote Display Digital Multimeter How to Make Measurements Circuit Power: OFF to connect meter. ON for measurement. OFF to disconnect meter. 1 3 Total Current to Circuit 5 Current Through One Component 2 5 gcc107.eps Figure 6.
233 Users Manual Frequency Measurements A frequency measurement is a count of the number of times an ac voltage or current signal crosses a threshold point each second. To make a frequency measurement: 1. Set the function switch to for voltage or for current. 2. Connect the Meter to the signal source. 3. Push . The Meter autoranges to one of four frequency ranges: 99.99 Hz, 999.9 Hz, 9.999 kHz, and 50 kHz.
True-rms Remote Display Digital Multimeter Remote Operation Remove the Display Module To remove the display module (see Figure 7): 1. Push in on the latches on the sides of the display module. 2. Pull the display module off of the top end of the Meter base. The Meter base and display module can be a maximum of 10 Meters (30 feet) from each other before the radio connection is broken. This distance can change if obstacles are between the Meter base and the display module.
233 Users Manual If the radios in the Meter base and display module do not connect, flashes in the display. Dock the display module with the Meter base and turn the Meter off and then on. When the Meter is turned on, the red highvoltage LED on the Meter base flashes. If not, replace the Meter base batteries. For maximum battery life, dock the display module to the Meter base when the Meter is off. The display module has a built-in magnet to attach to metal surfaces.
True-rms Remote Display Digital Multimeter Maintenance Battery Replacement Maintenance XWWarning To prevent a possible electrical shock or personal injury, have an approved technician repair the Meter. General Maintenance Clean the case with a damp cloth and weak detergent. Do not use a solvent or cleaners with abrasives. Dirt or moisture in the terminals can cause incorrect measurements. To clean the terminals: 1. Turn the Meter off and remove all test leads. 2.
233 Users Manual 1 2 4 3 gcc112.eps Figure 9.
True-rms Remote Display Digital Multimeter Maintenance To replace the batteries in the Meter base: 1. Turn the Meter off and remove all test leads. 2. 3. Lift the tilt stand up as shown in Figure 9. Turn the battery-door latch with a standard screwdriver until the unlocked symbol () aligns with the arrow. 4. Lift off the battery door. 5. Remove the three AA batteries and replace them with new ones. Use the correct battery orientation. 6. Install the battery door.
233 Users Manual To replace the batteries in the display module: 1. Remove the display module from the Meter base. See the “Remove the Display” section. 2. Remove the battery door of the display module as shown in Figure 10. 3. Remove the two AA batteries and replace them with new ones. Use the correct battery orientation. 4. Replace the battery door on the display module. 2 3 Dock the display module with the Meter base and turn the Meter on. gcc111.eps Figure 10.
True-rms Remote Display Digital Multimeter Maintenance Fuse Test To do a fuse test: Good fuse: 0.0 Ω to 0.5 Ω 1. Set the function switch to . Replace fuse: OL 2. Connect a test lead to the jack as shown in Figure 11. 3. Touch the other end of the test lead to the A jack. A good fuse will show a resistance of 0.5 Ω or less. Replace the fuse if the resistance is higher or is shown. gcc105.eps Figure 11.
233 Users Manual Fuse Replacement To replace the fuse: 1. Remove the test leads from the Meter. 2. Remove the display module from the Meter base. See the “Remove the Display Module” section. 3. As shown in Figure 12, remove four screws from the case bottom. 4. Pull the case bottom from the case top. 5. Remove the fuse from its holder and replace it with an 11 A, 1000 V, FAST fuse with a minimum interrupt rating of 17,000 A. Use only Fluke PN 803293.
True-rms Remote Display Digital Multimeter Service and Parts Service and Parts If the Meter fails, replace the battery and do a fuse test. Read this manual to make sure the Meter is applied correctly. Replacement parts and accessories are shown in Table 7 and Figure 13. To get parts and accessories, refer to “How to Contact Fluke”. Table 7. Replacement Parts Description Qty. Fluke Part or Model Number Battery, AA 1.
233 Users Manual Fuse, 11A, 1000 V, Fast TL75 Test Lead Set 233 Display Battery AA 1.5 V Battery Door Display Module Battery Door Meter Base 233 Users Manual CD AC72 Alligator Clips 233 Getting Started Manual 80BK-A Integrated DMM Temperature Probe gcc116.eps Figure 13.
True-rms Remote Display Digital Multimeter Service and Parts Table 8. Accessories Item Description TPAK ToolPak Magnetic Hanger TL223 SureGrip™ Electrical Test Lead Set TL220 Industrial Test Lead Set AC285 SureGrip™ Alligator Clips AC87 Heavy Duty Bus Bar Clip Set i400s AC Current Clamp (requires PM9081 adapter) PM9081 Dual Banana Plug (male) to Female BNC Adapter Fluke accessories are available from an approved Fluke distributor.
233 Users Manual General Specifications Maximum voltage between any terminal and earth ground ........................................... 1000 V rms W Fuse for A inputs ..................................................... 11 A, 1000 V 17000A interrupt rating Fuse Display ........................................................................... 6000 counts, updates 4/sec (Frequency: 9,999 counts, Capacitance: 1,000 counts) Altitude Operating ...............................................................
True-rms Remote Display Digital Multimeter Detailed Specifications Weight ............................................................................604 g (1.3 lbs) Safety Compliance ........................................................Complies with ANSI/ISA S82.01-2004, CSA 22.2 No. 61010-1-04 to 1000 V Measurement Category III and 600 V Measurement Category IV. Certifications .................................................................
233 Users Manual DC Voltage, Conductance, and Resistance Function Range mV dc V dc Ω Resolution 600.0 mV 0.1 mV 6.000 V 0.001 V 60.00 V 0.01 V 600.0 V 0.1 V 1000 V 1V 600.0 Ω 0.1 Ω 6.000 kΩ 0.001 kΩ 60.00 kΩ 0.01 kΩ 600.0 kΩ 0.1 kΩ 6.000 MΩ 0.001 MΩ 40.00 MΩ 0.01 MΩ Accuracy ±(0.25 % + 2) ±(0.9 % + 2) ±(0.9 % + 1) ±(1.5 % + 2) Continuity The beeper is guaranteed on <20 Ω, and guaranteed off >250 Ω, and detects opens or shorts of 500 μs or longer.
True-rms Remote Display Digital Multimeter Detailed Specifications AC Current Function A ac [1,2,3] [1] Range Resolution 6.000 A 0.001 A 10.00 A 0.01 A Accuracy (45 – 500 Hz) ±(1.5 % + 3) All ranges are specified from 5 % of range to 100 % of range. [2] Crest factor of ≤3 at 4000 counts, decreasing linearly to 1.5 at full scale. [3] AC current >10 A is unspecified. 20 A continuous overload for 30 seconds maximum. DC Current Function A dc [1] [1] Range Resolution 6.000 A 0.001 A 10.
233 Users Manual Capacitance Range 1000 nF Resolution 1 nF 10.00 μF 0.01 μF 100.0 μF 0.1 μF 9999 μF 1 μF [1] Accuracy ±(1.9 % + 2) [1] >1000 μF: 5 % + 20 Diode Range 2.000 V 42 Resolution 0.001 V Accuracy ±(0.
True-rms Remote Display Digital Multimeter Detailed Specifications Frequency AC coupled, 5 Hz to 50 kHz, for V ac; dc coupled, 45 Hz to 5 kHz for A ac switch position. Range Resolution 99.99 Hz 0.01 Hz 999.9 Hz 0.1 Hz 9.999 kHz 0.001 kHz 50.00 kHz 0.01 kHz Accuracy ±(0.
233 Users Manual Input Characteristics Function Overload Protection Input Common Mode Impedance (nominal) Rejection Ratio (1 kΩ unbalance) L 1100 V rms >10 MΩ <100 pF > 100 dB at dc, 50 Hz or 60 Hz K 1100 V rms >5 MΩ < 100 pF > 60 dB, dc to 60 Hz Open Circuit Test Voltage Full Scale Voltage Ω R E G 44 To 6 MΩ 40 MΩ <0.7 V dc <0.9 V dc Normal Mode Rejection > 60 dB at 50 Hz or 60 Hz Typical Short Circuit Current <350 μA 1100 V rms <2.7 V dc 1100 V rms <2.
