Vaisala GM70 Technical data

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GM70 Hand-Held Carbon Dioxide Meter for Spot-Checking Applications

accuracy is not affected by dust, water vapor or most chemicals. The GM70 has a two-year recommended calibration interval.

The Vaisala CARBOCAP® Hand-Held Carbon Dioxide Meter GM70 is the demanding professional’s choice for hand-held carbon dioxide measurement. The meter consists of the indicator (center) and probe, used either with the handle (left) or pump (right).

Features/Beneﬁts

Proven Vaisala CARBOCAP®

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reliability

Two optional sampling

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methods: diusion or pump aspiration

User-friendly meter with

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multilingual user interface

Numerical and graphical

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display of measurements

Data can be logged and

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transferred to PC via MI70 Link software

Wide selection

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of measurement ranges

Easy recalibration using the

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interchangeable probes

Suitable for ﬁeld checking of

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ﬁxed CO

Short warm-up time

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Compact and versatile

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instruments

The Vaisala CARBOCAP® Hand-Held Carbon Dioxide Meter GM70 is a user-friendly meter for demanding spot measurements in laboratories, greenhouses and mushroom farms. The meter can also be used in HVAC and industrial applications, and as a tool for checking xed CO

The GM70 has a short warm-up time and is ready for use almost immediately. It has a menu-based interface, a graphical LCD display and data logging capability. The optional MI70 Link Windows combination with a USB connection cable provides an easy way to handle data in a PC environment.

instruments.

software in

Vaisala CARBOCAP® technology

The GM70 incorporates the advanced Vaisala CARBOCAP has unique reference measurement capabilities. The measurement

sensor that

Two sampling methods

The handle is for hand-held diffusion sampling. The GM70 pump enables pump-aspirated sampling from locations difcult to access otherwise. It is also ideal for comparisons with xed CO transmitters.

Interchangeable probes

The GM70 uses the same probes as Vaisala CARBOCAP Transmitter Series GMT220 and Modules Series GMM220. By plugging different probes into the handle or pump, the user can easily change the measurement range of the GM70.

The meter can also be used as a calibration check instrument for Vaisala’s GM20 and series, GMT/ M220 xed CO probes can even be adjusted by using the GM70 meter.

The GM70 has two probe inputs. Vaisala’s relative humidity and dewpoint probes can also be used simultaneously with CO measurement.

Carbon Dioxide

instruments. GMP220

Technical data

CO2 volume concentration measurement

Measurement ranges

High concentrations 0 ... 2 % short probe (GMP221) 0 ... 3 %

0 ... 5 %, 0 ... 10 %, 0 ... 20 % Low concentrations 0 ... 2000 ppm long probe (GMP222) 0 ... 3000 ppm, 0 ... 5000 ppm,

0 ... 7000 ppm, 0 ... 10,000 ppm Accuracy (including repeatability, non-linearity and calibration uncertainty) at 25 °C and 1013 hPa

GMP221 ±(1.5% of range + 2% of reading)

(applies for concentrations above 2% of full scale)

GMP222 ±(1.5% of range + 2% of reading) Temperature dependence, typical -0.3 % of reading / °C Pressure dependence, typical +0.15% of reading/hPa Long-term stability <±5 %FS/2 years Response time (63 %)

GMP221 20 seconds

GMP222 30 seconds Warm-up time 30 seconds, 15 minute full

speciﬁcations

Measurement environment

Temperature -20 ... +60 °C (-4 ... +140 °F) Relative humidity 0 ... 100 %RH non-condensing Operation pressure 700 ... 1300 hPa Flow range (diffusion sampling) 0 ... 10 m/s

MI70 Indicator general

Menu languages English, Chinese, French, Spanish,

German,Japanese, Russian,

Swedish, Finnish

Display LCD with backlight, graphic trend

display of any parameter,

character height up to 16 mm Max. no. of probes 2 Power supply Rechargeable NiMH battery pack

with AC-adapter Analog output 0 ... 1 VDC Output resolution 0.6 mV PC interface MI70 Link software with USB or

serial port cable Data logging capacity 2700 points Alarm Audible alarm function Operating temperature range -10 ... +40 °C (+14 ... +104 °F) Operating humidity range non-condensing Housing material ABS/PC blend Housing classiﬁcation IP54 Weight 400 g

Battery operation time

Continuous use with handle better than 8h at +20 °C (+68 °F) with pump better than 5h at +20 °C (+68 °F) without load Data logging use up to a month, depending on logging interval

Probe, handle & pump general

Sensor Vaisala CARBOCAP Housing material

GMP221/222 probe PC plastic GMH70 handle ABS/PC blend

GM70 Pump aluminium casing Storage temperature -30 ... +70 °C (-22 ... +158 °F) Storage humidity 0 ... 100 %RH non-condensing Weight

GMH70 with GMP221/222 probe 230 g

GM70 Pump with GMP221/222

probe 700 g

For more information, visit www.vaisala.com or contact us at sales@vaisala.com

Electromagnetic compatibility

EN 61326-1, Portable Equipment.

Accessories

Connection cable for ﬁxed CO2 instruments

GMT220, GMM220, GMD20 and

GMW20 GMA70 MI70 Link software with USB cable 219687 MI70 Link software with serial port cable Analog output cable for 0 ... 1 VDC 27168ZZ Calibration adapter 26150GM Carrying case MI70CASE Battery, NiMH 4.8V 26755 Spare probe GMP221, GMP222

(use the order form to deﬁne measurement range etc.) Naﬁon Membrane Tubing 212807GM

This material is subject to copyright protection, with all copyrights retained by Vaisala and its individual partners. All rights reserved. Any logos and/or product names are trademarks of Vaisala or its individual partners. The reproduction, transfer, distribution or storage of information contained in this brochure in any form without the prior written consent of Vaisala is strictly prohibited. All speciﬁcations — technical included — are subject to change without notice.

MI70LINK