USER'S GUIDE Vaisala CARBOCAP® Hand-Held Carbon Dioxide Meter GM70 M010139EN-G
PUBLISHED BY Vaisala Oyj P.O. Box 26 FI-00421 Helsinki Finland Phone (int.): +358 9 8949 1 Fax: +358 9 8949 2227 Visit our Internet pages at www.vaisala.com. © Vaisala 2012 No part of this manual may be reproduced, published or publicly displayed in any form or by any means, electronic or mechanical (including photocopying), nor may its contents be modified, translated, adapted, sold or disclosed to a third party without prior written permission of the copyright holder.
___________________________________________________________________ Table of Contents CHAPTER 1 GENERAL INFORMATION....................................................... 9 About This Manual ................................................. 9 Contents of This Manual ...................................... 9 Version Information ............................................ 10 Documentation Conventions .............................. 10 Safety....................................................................
USER'S GUIDE ______________________________________________________ CHAPTER 5 BUTTONS, DISPLAYS, AND MENUS ....................................23 Buttons and Navigation........................................23 Basic Display.........................................................24 Graphical Display..................................................25 Menus.....................................................................25 CHAPTER 6 SETTINGS ............................................................
___________________________________________________________________ CHAPTER 9 FIELD CHECKING OF FIXED TRANSMITTERS.................... 43 Field Checking of the Vaisala GMW115 and GMD/W20 Series Transmitters (Diffusion Sampling)............................................. 43 Field Checking of the Vaisala GMD/W20 Series Transmitters (Pump Aspirated Sampling) .......... 45 Field Checking of the GMT220 or GMM220 (Without a Display) ...............................................
USER'S GUIDE ______________________________________________________ CHAPTER 13 TECHNICAL DATA .................................................................61 GM70 Hand-Held Carbon Dioxide Meter .............61 General ...............................................................61 Electromagnetic Compatibility.............................61 GMP221/222 Probes..............................................61 GMH70 Handle, GM70PUMP.................................63 MI70 Indicator .......................
___________________________________________________________________ List of Figures Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 10 Figure 11 Figure 12 Figure 13 Figure 14 Figure 15 Figure 16 Figure 17 Figure 18 Figure 19 Figure 20 GM70 Parts ............................................................ 15 Properly Connecting the GM70PUMP ....................
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Chapter 1 ___________________________________________ General Information CHAPTER 1 GENERAL INFORMATION This chapter provides general notes about this manual and the Product. About This Manual This manual provides information for installing, operating, and maintaining Vaisala CARBOCAP® Hand-Held Carbon Dioxide Meter GM70. Contents of This Manual This manual consists of the following chapters: - Chapter 1, General Information, provides general notes about this manual and the Product.
USER'S GUIDE ______________________________________________________ - Chapter 12, Maintenance, consists of maintenance and technical support information. - Chapter 13, Technical Data, provides the technical data of the GM70. Version Information Table 1 Manual Revisions Manual Code M010139EN-G M010139EN-F Description April 2012. This version. New error codes added. General updates implemented. 2008. Previous version.
Chapter 1 ___________________________________________ General Information ESD Protection Electrostatic Discharge (ESD) can cause immediate or latent damage to electronic circuits. Vaisala products are adequately protected against ESD for their intended use. It is possible to damage the product, however, by delivering electrostatic discharges when touching, removing, or inserting any objects inside the equipment housing.
USER'S GUIDE ______________________________________________________ License Agreement All rights to any software are held by Vaisala or third parties. The customer is allowed to use the software only to the extent that is provided by the applicable supply contract or Software License Agreement. Warranty Visit our Internet pages for standard warranty terms and conditions: http://www.vaisala.com/warranty.
Chapter 2 _____________________________________________ Product Overview CHAPTER 2 PRODUCT OVERVIEW This chapter introduces the features, advantages, and the product nomenclature. Introduction to Vaisala CARBOCAP® HandHeld Carbon Dioxide Meter GM70 The GM70 hand-held carbon dioxide meter measures volume concentration of CO2 gas and displays the result in the units of ppm or percentage %.
USER'S GUIDE ______________________________________________________ Interchangeable Probes By selecting the right probe you can choose the measuring range that best fits for your application. The calibrated measuring ranges varies from 0...2000 ppm to 0 ... 20% concentrations of CO2. Refer to Chapter 2, Product Overview, on page 13 and Chapter 13, Technical Data, on page 61 for more details. For changing the measuring range you only have to change the probe.
Chapter 2 _____________________________________________ Product Overview Parts Description 0505-221 Figure 1 GM70 Parts The following numbers refer to Figure 1 above: 1 2 3 = = = MI70 indicator Recharger connector Connector ports I and II for probes and cables VAISALA __________________________________________________________ 15
USER'S GUIDE ______________________________________________________ 4 5 6 7 8 9 10 11 12 13 14 = = = = = = = = = = = Probe GMP221 or GMP222 Probe fastener Handle GMH70 Adjustment button Gas outlet ON/OFF switch Gas inlet Measuring chamber Probe GMP221 or GMP222 Probe connector Connector to MI70 indicator Probes The GMP220 series probes can be used with the GM70. Table 2 below presents the measuring ranges that can be can be selected for the probes.
Chapter 3 ________________________________________Preparations Before Use CHAPTER 3 PREPARATIONS BEFORE USE This chapter describes the procedures required before use. Recharging the Batteries 1. 2. 3. 4. If using alkaline batteries, unscrew the back plate of the indicator and insert the batteries. Note that while possible, the use of alkaline batteries is not recommended. If the GM70 is ordered with a rechargeable battery pack, the battery pack is already in place as shipped from the factory.
USER'S GUIDE ______________________________________________________ Turning On and Setting Language, Date, and Time 1. Connect the probe handle (or the connector from the GM70PUMP) to either of the connector ports of the indicator. 2. Press the 3. Select the language by using buttons. Confirm by pressing SELECT. The default date presentation format is: date.month.year. To change the date, select Date and press SET. Change the date by using the buttons. To confirm the date, press OK.
Chapter 4 ______________________________________ Measuring Carbon Dioxide CHAPTER 4 MEASURING CARBON DIOXIDE This chapter consists of instructions on how to do carbon dioxide measurements. The results of carbon dioxide measurements are affected by the air pressure and the temperature of the measurement conditions.
USER'S GUIDE ______________________________________________________ CAUTION Handle the probe carefully. Strong impact or falling can damage the probe. If you need to disconnect the probe, first press POWER ON/OFF button to turn the indicator OFF. This ensures that all settings and data are saved properly. Taking Measurements (Pump Aspirated Sampling With GM70PUMP) See Chapter 3 Preparations Before Use on page 17 if you start the GM70 for the first time, otherwise follow the instructions below: 1. 2. 3.
Chapter 4 ______________________________________ Measuring Carbon Dioxide 0505-222 Figure 2 Properly Connecting the GM70PUMP The following number refers to Figure 2 above: 1 = Match the 2 O-rings together with the smooth probe surface to have a tight connection! NOTE Only one pump aspirated system can be connected to the MI70 at a time. NOTE When using the pump aspirated system it is recommended to power the system by using the recharger connected to a wall socket.
USER'S GUIDE ______________________________________________________ Measuring Other Parameters Simultaneously Connect Vaisala interchangeable dewpoint (DMP) or humidity (HMP) probe to the MI70 indicator's other connector port to have simultaneous humidity measurement. 1. 2. 3. 4. 5. Connect the DMP70/HMP70 probe to the other connector port in the bottom of the indicator. Turn on the MI70 device.
Chapter 5 ____________________________________Buttons, Displays, and Menus CHAPTER 5 BUTTONS, DISPLAYS, AND MENUS This chapter contains information about the buttons, displays and menus of the GM70.
USER'S GUIDE ______________________________________________________ Press down and hold the POWER ON/OFF button (1) until the indicator turns on/off. Press the SHORTCUT buttons (2) to activate the function above the button. Press any of the ARROW buttons (3) to open the path for the MENUS. In the MENUS you can navigate with the ARROW buttons. Basic Display 0505-225 Figure 5 Basic Display 1. 2. Selected unit, ppm or %. Shortcut button Graphic1 changes display into the graphical trend mode. 3.
Chapter 5 ____________________________________Buttons, Displays, and Menus Graphical Display The graphical display shows you the measurements in the form of a curve. From the curve you can examine the data trend and the history data of the last minutes. 1. 2. 3. In the basic display, press Graphic or (alternatively open the MENU, select ►Recording/Viewing). Graphical display opens. More information in section Graphic History on page 30. Press BACK to return to the basic display.
USER'S GUIDE ______________________________________________________ 0505-226 Figure 6 Menus The following numbers refer to Figure 6 above: 1 2 3 4 5 6 = = = = = = Main menu Display menu Functions menu Recording/Viewing menu Environment menu Settings menu 26 _____________________________________________________ M010139EN-G
Chapter 6 _____________________________________________________ Settings CHAPTER 6 SETTINGS This chapter provides information about the settings of GM70. Setting Actual Pressure Value and Unit For achieving the most accurate measurements in high altitudes where the barometric pressure is clearly lower than in the sea level, the actual atmospheric pressure value should be set to the GM70. The acceptable pressure range is 700 … 1300 hPa. Pressure is given in the units of hPa or bar.
USER'S GUIDE ______________________________________________________ Setting Actual Temperature Value and Unit For achieving the most accurate measurements, the actual temperature value should be set to the GM70. The acceptable temperature range is 20...60ºC. Follow the instructions below: 1. Open the MENU, press OPEN. 2. Select ►Environment with 3. Select temperature value, press 4. Set the temperature value by using save the value. 5. Press press . SET. buttons.
Chapter 6 _____________________________________________________ Settings Display Settings 0505-228 Figure 8 Display Menu Display Units The unit of the measurement can be selected between ppm and %. The default unit is ppm for measuring ranges with upper limit of 10 000 ppm or less. For measuring ranges with upper limit of 2...20%, the default unit is %. NOTE 1. Open the MENU, press OPEN. 2. Select ►Display, press 3. Select ►Quantities and units, press 4. To change the unit, press 5.
USER'S GUIDE ______________________________________________________ Rounding When using % units, you can select two or three decimal display by using the Rounding function. The default setting is rounding off (= three decimal display). 1. Open the MENU, press OPEN. 2. 3. Select ►Display, press Select Rounding. 4. Press ON to have rounding on (two decimal display). Press to deactivate rounding (three decimal display). 5. Press . OFF EXIT to return to the basic display.
Chapter 6 _____________________________________________________ Settings 1. Open the MENU, press 2. Select ►Display, press 3. Select Graphic history, press SHOW to have a graphical history display. To get the statistical info on the graph area (minimum, maximum and mean values), press INFO. 4. OPEN. . 5. To get the curve of the other selected quantities, press NEXT. To get the curves of all the quantities, press NEXT until text ALL is shown, press ALL. 6.
USER'S GUIDE ______________________________________________________ language selection menu by pressing: (middle). , (middle) , , , Automatic Power Off As shipped from the factory, the GM70 has a default setting which turns the power off automatically after 15 minutes of inactivity. This is to save the battery. In case you want to change the inactivity time setting to 60 minutes or turn off the automatic power off function, follow the instructions below: 1. Open the MENU, press OPEN. 2.
Chapter 6 _____________________________________________________ Settings 0505-230 Figure 10 Changing the Shortcut Keys The following number refers to Figure 10 above: 1 = Hold/Save-shortcut key replaced by pressure setting shortcut key P Key Click and Backlight On Key Press 1. Open the MENU, press 2. Select ►Settings, press 3. 4. Select ►User interface, press . To turn the sound effect while pressing the buttons OFF or ON, select Key click and press ON/OFF.
USER'S GUIDE ______________________________________________________ 5. The default time presentation format is 24-hour clock. To change the time, select Time and press SET. Change the time by using arrow buttons. To confirm the time, press OK. If you want to change the format, select 12-hour clock, press ON/OFF. 6. Press EXIT. Device Information The basic information about the indicator and the probe is found as follows: 1. Open the MENU, press OPEN. 2. Select ►Settings, press 3. 4.
Chapter 6 _____________________________________________________ Settings Reverting Factory Settings Factory settings of the indicator only can be reverted to clear all changed settings and data memory of the indicator. Reverting factory settings of the indicator does not affect the probe calibration. Factory calibration of the probe cannot be reverted if adjustment is made (see Chapter 10 Calibrating and Adjusting the Probes on page 47). 1. Open the MENU, press 2. Select ►Settings, press 3.
USER'S GUIDE ______________________________________________________ 1. Open the MENU, press 2. Select ►Settings, press 3. Select ►Alarm, press 4. Select the first limit, press (if the alarm function is ON, take it OFF). Set the alarm level by using arrow buttons. Press OK to save the setting. If needed, select the second limit, and then follow instructions from item 6. The alarm will go off when the upper limit is exceeded or when lower limit is gone below. 5. 6. 7. OPEN. . .
Chapter 7 ______________________________________ Analog Output Connection CHAPTER 7 ANALOG OUTPUT CONNECTION This chapter describes the selecting and scaling of the analog output connection. Selecting and Scaling the Analog Output 0505-233 Figure 13 Selecting Analog Output To get analog measurement data you need an analog output signal cable, see section Accessories on page 65. One scalable voltage signal channel 0...1.0V is available.
USER'S GUIDE ______________________________________________________ 1. Connect the analog output signal cable connector to the indicator base connector. Connect the screw terminal block as follows: Brown wire: common wire (-) Yellow-green wire: signal (+) 2. Open the MENU, press 3. Select ►Functions, press 4. Select ►Analog output, press 5. Select 0.0 V to set the value for the 0.0V output signal, press SET (If the analog output is ON, take it OFF). Set the low value by using the arrow buttons.
Chapter 8 _______________________________________________ Recording Data CHAPTER 8 RECORDING DATA This chapter describes the recording, viewing and transferring of data. Recording 0505-234 Figure 14 Recording Data You can record measurement data and view the recorded data on the display. 1. Press the shortcut ►Record, (alternatively open the MENU, select ►Recording/Viewing). 2. Select ►Record data, press 3. 4. To change interval, select Interval, press SET.
USER'S GUIDE ______________________________________________________ Measurement interval 1 second 5 seconds 15 seconds 30 seconds 1 minute 5 minutes 15 minutes 30 minutes 1 hour 3 hours 12 hours 5. Press SELECT. 6. 7. To set the recording duration, select Duration, press SET. Select the recording duration with the arrow buttons and press SELECT. 8. Start recording: select Start/Stop recording, press START. If you choose 'Memory full', you see the maximum recording time on the display.
Chapter 8 _______________________________________________ Recording Data Viewing Recorded Data 1. Open the MENU, press OPEN. 2. Select ►Recording/Viewing, press . 3. Select ►View recorded data, press . 4. Select the file you want to view, press . The files are identified according to the starting date and time of recording. 5. Press GRAPH to get the graphical view, press TIMES to get the recording timestamps (press VALUES to go back to the recording values). 6.
USER'S GUIDE ______________________________________________________ Transferring Recorded Data to PC The recorded data can be transferred to a PC by using the MI70 Link program. The MI70 Link program can be ordered from Vaisala, see section Accessories on page 65. You can examine the recorded data easily in Microsoft Windows® environment and further transfer it into a spreadsheet program (such as Microsoft Excel® for modifications.
Chapter 9 ______________________________ Field Checking of Fixed Transmitters CHAPTER 9 FIELD CHECKING OF FIXED TRANSMITTERS This chapter describes the field checking of fixed transmitters.
USER'S GUIDE ______________________________________________________ 1. 2. 3. 4. 5. 6. Connect the end of the GMA70-cable to either of the GM70's connector ports located on the bottom of the indicator. Connect the other end of the GMA70-cable to the SERIAL COM pin connector of the transmitter motherboard. Turn on the MI70 indicator. Set the GM70 probe next to the transmitter to be checked. Ensure that the probes are located in the same conditions.
Chapter 9 ______________________________ Field Checking of Fixed Transmitters Field Checking of the Vaisala GMD/W20 Series Transmitters (Pump Aspirated Sampling) The pump aspirated system feeds the same gas sample to both the reference probe and the transmitter to be checked. Both readings can be seen on the GM70's display simultaneously when using a connecting cable GMA70 (see section Accessories on page 65). 1. 2. 3. 4. 5. 6.
USER'S GUIDE ______________________________________________________ Field Checking of the GMT220 or GMM220 (Without a Display) Follow the instructions below to check the operation of a GMP220 series probe. 1. 2. 3. Check the display reading of the GM70. Turn off the GM70. Detach the GM70's probe as follows: - Loosen the plastic probe fastener (item 7, Figure 1) by unscrewing it about 5 turns. - Take a firm hold from the base of the probe and pull strongly until the probe comes loose. 4.
Chapter 10 _____________________________ Calibrating and Adjusting the Probes CHAPTER 10 CALIBRATING AND ADJUSTING THE PROBES This chapter contains information on calibrating and adjusting the probes. In this user's guide the term calibration means comparing detector's reading to a reference concentration. In adjusting, which is usually done after calibration, the reading of the detector is changed to correspond to the reference concentration.
USER'S GUIDE ______________________________________________________ Calibration and Adjustment by the User The GM70 can be calibrated and fine control adjustment can be carried out by the user. Note that this adjustment does not correspond to the accurate factory adjustment. The user adjustment is recommended only if the reading error is less than 10% of the measuring range in the low-end and less than 20% of the measuring range in the high-end.
Chapter 10 _____________________________ Calibrating and Adjusting the Probes Adjustment with Reference Gases Equipment Needed For the adjustment procedure with gases, you need the probe to be adjusted, accurate reference gas(es), a pressure regulator, a flow meter, a field check adapter (can be ordered from Vaisala) and flexible tubing with 3 mm (1/8") inner diameter. See section Accessories on page 65.
USER'S GUIDE ______________________________________________________ 1. Insert the probe into the field check adapter until the perforated filter is covered. 0505-237 Figure 17 2. 3. 4. 5. Field Check Adapter Connect the tubing to the bottom port of the adapter. Connect the adapter with the tubing to the flow meter, the pressure regulator and further to the low-end reference gas bottle. The side port of the adapter is left open for gas outflow.
Chapter 10 _____________________________ Calibrating and Adjusting the Probes 13. Let the high end reference gas flow and stabilize with a flow rate of 0.6 l/min. Follow the reading of GM70, and after it has stabilized, wait for 6 more minutes. 14. Press READY with the stabilized reading in the higher reference concentration. Give the high-end reference concentration value by using the arrow buttons. The analyzed CO2 concentration of the reference gas is typically printed on the bottle.
USER'S GUIDE ______________________________________________________ 5. Take out the screw from the GM70 probe handle to expose the adjustment button (see Figure 16 on page 48). Press the button with a small screwdriver. When pressing the button, the indicator turns to adjusting mode. 6. Press 7. Select CO2, press 8. Press YES to give the ambient pressure and temperature values. To continue adjusting press EXIT. 9. Now the adjustment mode is on. Press GRAPH to see when the readings have stabilized.
Chapter 10 _____________________________ Calibrating and Adjusting the Probes Adjustment with Two Probes You need to have two probe handles and two probes: one calibrated probe and the probe to be adjusted. It is recommended to carry out the adjustment in a stable environment and near the concentration values in which the device is used. Connect the probes to connectors I and II in the bottom of the indicator. 1. 2. Turn on the GM70. Take the probe you want to adjust.
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Chapter 11 ______________________________________________Error Messages CHAPTER 11 ERROR MESSAGES This chapter lists the error messages of the GM70. Table 3 Error Message Difference too big Value too high Error Messages Table Interpretation and Action The adjustment cannot be made if the difference between the measured concentration and the given value is more than 20% of the maximum value of the probe's measuring range. This message can be caused by a considerable high drifting error of the probe.
USER'S GUIDE ______________________________________________________ Error Message Probe error Adapter error Interpretation and Action power. This error can occur when changing the probe while power is on. Switch off power and check that the probe is connected properly: unscrew the probe fastener. Insert the probe to the handle as deep as possible. Turn the probe inside the handle until you feel that a step in the probe connector snaps into the groove of the handle connector and locks the probe.
Chapter 12 ________________________________________________ Maintenance CHAPTER 12 MAINTENANCE This chapter consists of maintenance and technical support information. Changing the Probe 1. 2. Turn off the GM70. Detach the probe as follows (see Figure 18 below): - Loosen the plastic probe fastener by unscrewing it about 5 turns. - Take a firm hold from the base of the probe and pull strongly until the probe comes loose. Insert a new probe to the handle as deep as possible.
USER'S GUIDE ______________________________________________________ Changing the Probe Filter Spare filters for the probe can be ordered from Vaisala, see section Accessories on page 65. 1. 2. 3. Remove the plastic grid by pulling it out. Remove the filter paper. Insert a new filter paper and plastic grid. Cleaning Wipe the plastic parts of the device with a damp paper or towel. Mild washing agents can be used. Do not let water flow down to electronics through the buttonholes.
Chapter 12 ________________________________________________ Maintenance Changing the Battery Pack New rechargeable battery packs can be ordered from Vaisala. Change the battery pack as follows: 1. Open the back plate of the indicator by opening the screw of the back plate. 2. Remove the old battery pack. Detach the black connector by pulling up carefully from the wires. 3.
USER'S GUIDE ______________________________________________________ Technical Support For technical questions, contact the Vaisala technical support by e-mail at helpdesk@vaisala.com. Provide at least the following supporting information: - Name and model of the product in question Serial number of the product Name and location of the installation site Name and contact information of a technically competent person who can provide further information on the problem.
Chapter 13 ______________________________________________ Technical Data CHAPTER 13 TECHNICAL DATA This chapter provides the technical data of the GM70.
USER'S GUIDE ______________________________________________________ Table 6 Accuracy Specifications Accuracy (including repeatability, non-linearity and calibration uncertainty) at 25°C and 1013 hPa. Probe GMP221 Accuracy ±[1.5% of range + 2% of reading] Accuracy specification applies for CO2 concentrations above 2% of full scale GMP222 Property Temperature dependence, typical Pressure dependence, typical Long-term instability Response time (63%) Table 7 ±[1.
Chapter 13 ______________________________________________ Technical Data GMH70 Handle, GM70PUMP Table 8 General Specifications Property GMH70 Handle GMH70 handle material Probe fastener Weight (with probe) Housing classification GM70PUMP Pump casing Pump Weight (with probe) Housing classification Description / Value ABS/PC-blend Aluminium 0.23 kg IP65 Anodized aluminium 0 … 18 mbar differential pressure 0.
USER'S GUIDE ______________________________________________________ Property Description / Value Minimum load resistor 10 kohm to ground PC interface MI70 Link software with USB or serial port cable Data logging capacity 2700 points Logging interval 1 s to 12 h Alarm Audible alarm function Housing classification IP54 Weight 400 g Housing material ABS/PC-blend Battery Pack Table 10 Battery Pack Specifications Property Operation times continuous use (one probe) data logging use (one probe) when pump is on
Chapter 13 ______________________________________________ Technical Data Accessories Table 11 Accessories Table Description Euro AC-adapter UK AC-adapter US AC-adapter AUS AC-adapter Measurement indicator (battery pack included) Analog output signal (0 … 1 VDC) cable Connection cable for fixed CO2 instruments (GMT220, GMM220, GMD20, GMW115 and GMW20) Carrying case Spare probe (use the order form to define measurement range) Aspiration pump Handle Spare filter for GMP221 Spare filter for GMP222 Field chec
USER'S GUIDE ______________________________________________________ Dimensions in mm (inch) 0505-240 Figure 20 Dimensions 66 _____________________________________________________ M010139EN-G
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