Vaisala CARBOCAP GM70 User Manual
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Vaisala CARBOCAP GM70 User Manual

Handheld carbon dioxide
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M010139EN-H
User Guide
Vaisala CARBOCAP® Handheld Carbon Dioxide
Meter
GM70

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Summary of Contents for Vaisala CARBOCAP GM70

  • Page 1 M010139EN-H User Guide Vaisala CARBOCAP® Handheld Carbon Dioxide Meter GM70...
  • Page 2 English versions are This product contains software developed applicable, not the translations. by Vaisala or third parties. Use of the The contents of this document are subject software is governed by license terms and to change without prior notice.

  • Page 3: Table Of Contents

    Table of contents Table of contents About this document..................7 Version information..................7 Related manuals....................7 Documentation conventions................8 Trademarks......................8 Product overview.................... 9 Introduction to GM70..................9 2.1.1 Basic features of GM70................9 2.1.2 Interchangeable probes................9 Parts description..................... 10 Probes........................ 11 GM70PUMP for aspirated sampling...............
  • Page 4 GM70 User Guide M010139EN-H User interface settings................... 29 6.4.1 Selecting language................. 29 6.4.2 Correcting language selection.............. 30 6.4.3 Configuring automatic power off............30 6.4.4 Programming shortcut keys..............30 6.4.5 Configuring button tones and backlight..........31 Date and time....................31 Setting calibration reminder................. 32 Device information..................
  • Page 5 Table of contents Technical support.................... 57 Warranty......................57 Recycling......................57...
  • Page 6 GM70 User Guide M010139EN-H List of figures Figure GM70 parts......................10 Figure 2 MI70 indicator parts..................13 Figure 3 Correct connection of GM70PUMP............. 19 Figure 4 Display example with carbon dioxide and temperature and humidity probes connected simultaneously........20 Figure 5 GM70 basic display..................21 Figure 6 GM70 menus.....................23...
  • Page 7 List of tables List of tables Table 1 Document versions (English)................7 Table 2 Related manuals....................7 Table 3 GMP221 and GMP222 measuring ranges............11 Table 4 MI70 battery status indicator................14 Table 5 MI70 status icons....................24 Table 6 GM70 error messages..................48 Table 7 GMP220 probe measurement performance..........
  • Page 8 GM70 User Guide M010139EN-H...

  • Page 9: About This Document

    Chapter 1 – About this document 1. About this document 1.1 Version information This document provides detailed instructions for installing, operating, and maintaining Vaisala CARBOCAPâ Handheld Carbon Dioxide Meter GM70. Table 1 Document versions (English) Document code Date Description M010139EN-H April 2021 This manual. Document template and content organization update.

  • Page 10: Documentation Conventions

    Lists tools needed to perform the task. Indicates that you need to take some notes during the task. 1.4 Trademarks Vaisalaâ and CARBOCAPâ are registered trademarks of Vaisala Oyj. Windowsâ is either a registered trademark or trademark of Microsoft Corporation in the United States and other countries.

  • Page 11: Product Overview

    • Possibility for an analog output (voltage signal 0 … 1 V) • Sampling methods: diffusion sampling (GMH70 handle) or pump-aspirated sampling (GM70PUMP), alternatively • Multiprobe operation; any combination of 2 Vaisala DM70, GM70, HM70, and MM70 series probes can be used, for example, for simultaneous CO and dew point measurements •...

  • Page 12: Parts Description

    GM70 User Guide M010139EN-H 2.2 Parts description Figure 1 GM70 parts...

  • Page 13: Probes

    Chapter 2 – Product overview MI70 indicator Charger socket Connector ports I and II for probes and cables 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 the MI70 indicator 2.3 Probes...

  • Page 14: Safety

    GM70 User Guide M010139EN-H 2.5 Safety The Vaisala CARBOCAPâ Handheld Carbon Dioxide Meter GM70 delivered to you has been tested for safety and approved as shipped from the factory. Note the following precaution: CAUTION! Do not modify the unit or use it in ways not described in the documentation.

  • Page 15: Mi70 Indicator

    3.2 Installing and recharging MI70 batteries Vaisala recommends using the rechargeable battery pack (item code 26755) with GM70, instead of alkaline batteries. If you are using alkaline batteries, unscrew the back plate of the indicator and insert the batteries.

  • Page 16: Mi70 Battery Status Information

    MI70 screen. You can order replacement batteries from Vaisala (item code 26755). To keep the rechargeable MI70 battery in good working condition, recharge MI70...

  • Page 17: Mi70 First Start-Up Settings

    Chapter 3 – MI70 indicator 3.3 MI70 first start-up settings When taking MI70 into use for the first time, configure the basic settings (language, date, and time) as instructed below. 1. Press the Power On/Off button in MI70 to switch the indicator on. 2.
  • Page 18 GM70 User Guide M010139EN-H In case you are installing a rechargeable battery pack in the MI70 indicator and you have a device with alkaline batteries, remove the metal contact from the probe port end of the battery compartment before installing the battery pack. 1.

  • Page 19: Measuring Carbon Dioxide

    Chapter 4 – Measuring carbon dioxide 4. Measuring carbon dioxide 4.1 Overview This chapter consists of instructions on how to carry out carbon dioxide measurements. The results of carbon dioxide measurements are affected by the air pressure and the temperature of the measurement conditions. 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 GM70.

  • Page 20: Taking Measurements (Pump-Aspirated Sampling With Gm70Pump)

    GM70 User Guide M010139EN-H 4.3 Taking measurements (pump-aspirated sampling with GM70PUMP) When using the pump-aspirated system it is recommended to power the system by using the charger socket connected to a wall socket. Only one pump-aspirated system can be connected to MI70 at a time. To use GM70PUMP for pump-aspirated sampling: 1.

  • Page 21: Measuring Multiple Parameters Simultaneously

    4.4 Measuring multiple parameters simultaneously MI70 is a generic indicator that can be used with Vaisala interchangeable dew point (DM70 series), humidity (HM70 series), carbon dioxide (GM70 series), and moisture in oil (MM70 series) probes. Two different types of probes can be connected to MI70 simultaneously.

  • Page 22: Figure 4 Display Example With Carbon Dioxide And Temperature And Humidity Probes Connected Simultaneously

    GM70 User Guide M010139EN-H 5. When measuring humidity and CO simultaneously, you can use the HMP70 probe's temperature data to compensate the CO measurement. a. Select temperature (T) and press Set. b. MI70 asks if you want to link the measured T value to environment parameter: to link, press Link and then press Exit.

  • Page 23: Displays And Menus

    Chapter 5 – Displays and menus 5. Displays and menus 5.1 Basic display Figure 5 GM70 basic display Battery indicator. Shows the current status (charge) of the battery. Icon that indicates that GM70 is communicating with a PC. If the PC cable is not connected, this icon is not shown.

  • Page 24: Main Menu

    GM70 User Guide M010139EN-H To get the statistical info on the graph area (minimum, maximum, and average values), press Info. To get the curve of the other selected parameters, press Next. To get the curves of all the parameters, press Next until the text All appears, and then select All. To zoom in and out, press the up/down arrow buttons.

  • Page 25: Figure 6 Gm70 Menus

    Chapter 5 – Displays and menus 6. To return to normal operation, press Exit. Figure 6 GM70 menus Main menu Display menu Functions menu Recording/Viewing menu Environment menu Settings menu...

  • Page 26: Mi70 Status Icons

    MI70 screen. You can order replacement batteries from Vaisala (item code 26755). Recording icon. Shows that the measurements are being recorded. The bar shows for how long the recording will continue (a set time limit or until the memory runs out).
  • Page 27 Chapter 5 – Displays and menus More information ‣ MI70 battery status information (page 14) ‣ Recording data (page 36) ‣ Setting calibration reminder (page 32) ‣ Selecting and scaling analog output (page 35) ‣ Transferring recorded data to PC with MI70 Link (page 37) ‣...

  • Page 28: Settings

    GM70 User Guide M010139EN-H 6. Settings 6.1 Setting actual pressure value and unit Figure 7 Environment menu 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 GM70.

  • Page 29: Display Settings

    Chapter 6 – Settings 6. To return to the basic display, press Exit. If you are using HMP75 or some other humidity probe, the temperature information can be linked to compensate the CO reading of GM70. For more information on simultaneous measurements, see Measuring multiple parameters simultaneously (page 19).

  • Page 30: Rounding

    GM70 User Guide M010139EN-H 7. To return to the basic display, press Exit. 8. If you want to check the environment settings, press Yes. Otherwise press Measurement units (ppm and %) express the CO concentration by gas volume. 1% CO = 10 000 ppm CO 6.3.2 Rounding When using % units, you can select a 2 or 3-decimal display by using the Rounding options.

  • Page 31: User Interface Settings

    Chapter 6 – Settings 4. Select the saved display based on date and time by pressing the right arrow button. 6.4 User interface settings Figure 9 User interface settings menus 6.4.1 Selecting language You can select any of the following languages for the user interface: English, Finnish, Chinese, Russian, Japanese, Swedish, French, German, or Spanish.

  • Page 32: Correcting Language Selection

    GM70 User Guide M010139EN-H 4. Select Language and press Set. 5. Choose the correct language and press Select. 6. To return to the basic display, press Exit. 6.4.2 Correcting language selection 1. Return to the basic display by pressing the rightmost button until the basic display appears.

  • Page 33: Configuring Button Tones And Backlight

    Chapter 6 – Settings 7. To return to the basic display, press Exit. Figure 10 Hold/Save replaced by Pressure (P) shortcut Hold/Save shortcut key replaced by P 6.4.5 Configuring button tones and backlight To turn on or off the backlight or the sound effects for the buttons: 1.

  • Page 34: Setting Calibration Reminder

    GM70 User Guide M010139EN-H 4. For the desired date, select Date and then press Set. Use the arrow buttons to change the date. Confirm the selection by pressing Select. To change the date format, select an option and press Select. 5.

  • Page 35: Device Information

    Software version of the MI70 indicator Serial number of the MI70 indicator Software version of the probe Location of the last adjustment (alternatives: Vaisala, GM70, or GMK220) 6.8 Factory settings Factory calibration of the probe cannot be reverted if adjustment is made (see Calibration and adjustment by user (page 41)).

  • Page 36: Other Functions

    GM70 User Guide M010139EN-H 1. Open the menu by pressing Open. 2. Select Settings and press 3. Select Factory Settings and press Revert. To confirm the selection, press Yes. MI70 powers off automatically. When MI70 is switched on after a factory reset, the language, date, and time settings must be set again in the user interface settings.

  • Page 37: Selecting And Scaling Analog Output

    The alarm does not work when the device is powered off. 6.9.2 Selecting and scaling analog output To get analog measurement data, an analog signal cable is needed (Vaisala item code 27168ZZ). One scalable voltage signal channel 0 … 1.0 V is available. You can scale the output to any output range but it is recommended to have the scaling within the probe's measuring range to get accurate measurements.

  • Page 38: Recording And Viewing Data

    GM70 User Guide M010139EN-H 2. Open the menu by pressing Open. 3. Select Functions and press 4. Select Analog output and press 5. To set the value for the 0.0 V output signal, select 0.0 V and press Set. If the analog output is on, turn it off.

  • Page 39: Checking Mi70 Memory Status

    Microsoft Excelâ. Both logged and real-time measurement data can be transferred. PC data transfer requires the MI70 Link Windowsâ software and a Vaisala USB cable (item code 219687). An RS-232 serial connection cable can also be used. The MI70 Link software is available from the Vaisala website: www.vaisala.com/mi70link.
  • Page 40 GM70 User Guide M010139EN-H 1. Install the MI70 Link software according to the instructions on the installation wizard. Do not connect the USB cable to your PC during installation. 2. When the installation has completed, connect the USB cable to the USB port on your PC. Windows detects the new cable, and starts automatically using the driver installed with MI70 Link.

  • Page 41: Field Checking Fixed Transmitters

    Value of connector II is on the lower row of the display. The difference of the readings is shown on the lowest row. 6. Compare the readings. In case there is a need for an adjustment, send the transmitter to Vaisala to be adjusted. For contact information, see Technical support (page 57).
  • Page 42 4. Insert the calibrated GMP220 series probe to the measuring chamber of GM70PUMP. 5. Turn on the MI70 indicator and GM70PUMP. 6. Compare the readings. In case there is need for an adjustment, send the transmitter to Vaisala to be adjusted. For contact information, see Technical support (page 57).

  • Page 43: Calibration And Adjustment Of Gmp220 Series Probes

    8.1.2 Factory calibration and adjustment It is recommended to send the GMP220 series probes to a Vaisala Service Center for accurate calibration and adjustment. For contact information, see www.vaisala.com/support.

  • Page 44: Adjustment With Reference Gases

    For the adjustment procedure with gases, you need the probe that is going 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 in) inner diameter. For information on available accessories and ordering, see Spare parts and accessories (page 55).

  • Page 45: Making A 2-Point Adjustment

    The difference between the 2 references must be at least 20 % of the measuring range of the probe. See also Field Check Adapter 26150GM Quick Reference Guide (M210450EN), available at www.vaisala.com/gm70. 1. Insert the probe into the field check adapter until the perforated filter is covered ((1) in Figure 18 (page 43)).
  • Page 46 GM70 User Guide M010139EN-H 3. 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. 4. Let the low end reference gas flow and stabilize with a flow rate of about 0.6 l/min. Follow the reading of GM70 and wait until the reading has fully stabilized.

  • Page 47: Making A 1-Point Adjustment

    Reverting to factory settings is not possible after the adjustment. See also Field Check Adapter 26150GM Quick Reference Guide (M210450EN), available at www.vaisala.com/gm70. 1. Insert the probe into the f i eld check adapter (as deep as possible, the perforated f i lter cover should be completely inside the adapter).

  • Page 48: Making An Adjustment With 2 Probes

    GM70 User Guide M010139EN-H 11. Give the reference concentration value by using the arrow buttons and press For example, if you are using pure nitrogen, enter value 0 ppm. For other reference gases, the analyzed CO concentration is typically printed on the bottle: use that value.

  • Page 49: Maintenance

    Figure 19 Detaching the probe Unscrew the probe fastener (about 5 turns) Pull the probe out firmly. 9.2 Changing the probe filter Replacement filters can be ordered from Vaisala. For ordering information, see Spare parts and accessories (page 55). 1. Remove the plastic grid by pulling it out.

  • Page 50: Cleaning

    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. Contact Vaisala (see Technical support (page 57)). Value too high The reference concentration can be at the highest 110 % of the maximum value of the probe's measuring range.
  • Page 51 Tighten the probe fastener. Switch on power. Adapter error Switch off power and check that the probe is connected properly (see the instructions for handling a Probe error message. In case of continuous error, contact Vaisala. See Technical support (page 57).

  • Page 52: Technical Specifications

    GM70 User Guide M010139EN-H 10. Technical specifications 10.1 GM70 specifications Table 7 GMP220 probe measurement performance Property Description/Value Response time (63 %) GMP221 probe: 20 s GMP222 probe: 30 s Warm-up time 30 s (15 min to full specification) 30 min to full specification with GM70PUMP Sensor type CARBOCAPâ...

  • Page 53: Mi70 Specifications

    Chapter 10 – Technical specifications Table 8 GMP220, GMH70, and GM70PUMP mechanical specifications Property Description/Value Probe cable length 1.9 m (6.2 ft) IP rating GMH70 handle IP65: Dust-tight. Protected from water jets from any direction. GM70PUMP IP54: Limited protection against dust. Protected from water splashes from any direction.
  • Page 54 GM70 User Guide M010139EN-H Property Description/Value Storage temperature −40 ... +70 °C (-40 ... +158 °F) Inputs and outputs Max. no of probes PC interface MI70 Link software with USB or serial port cable Power supply Rechargeable NiMH battery pack with AC adapter or 4 ×...

  • Page 55: Table 11 Mi70 Battery Operation Time

    Chapter 10 – Technical specifications Table 11 MI70 battery operation time Property Value/Description Typical charging time 4 hours Operation times Continuous use (with handle) Better than 8 h at +20 ˚C (+68 °F) Continuous use (with pump) Better than 5 h at +20 ˚C (+68 °F) without load Data logging use (one probe) Up to 30 days depending on logging interval...

  • Page 56: Dimensions

    GM70 User Guide M010139EN-H 10.3 Dimensions Figure 20 GM70 dimensions in mm (in)

  • Page 57: Spare Parts And Accessories

    Chapter 10 – Technical specifications 10.4 Spare parts and accessories Information on spare parts, accessories, and calibration products is available online at www.vaisala.com and store.vaisala.com. Table 12 GM70 spare parts and accessories Description Item code AC adapters Euro AC adapter MI70EUROADAPTER UK AC adapter...
  • Page 58 M010139EN-H Description Item code Rechargeable battery for MI70 26755 Calibration adapter for GMP220 series probes 26150GM Nafion ™ membrane tubing 212807GM Aspiration pump for GM70 GM70PUMP GM70 replacement handle GMH70 Vaisala MI70 Link software for Windows is available at www.vaisala.com/mi70link.

  • Page 59: Maintenance And Calibration Services

    Maintenance and calibration services Vaisala offers comprehensive customer care throughout the life cycle of our measurement instruments and systems. Our factory services are provided worldwide with fast deliveries. For more information, see www.vaisala.com/ calibration. • Vaisala Online Store at store.vaisala.com is available for most countries.
  • Page 60 www. v aisala.com...

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