GM70 VAISALA | Alldatasheet

Document overview

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Technical content

Features

  • Two optional sampling methods: diffusion or pump aspiration
  • User-friendly meter with multilingual user interface
  • Numerical and graphical display of measurements
  • Data can be logged and transferred to PC via MI70 Link software
  • Multiprobe operation: Vaisala’s relative humidity and dew point probes can be used simultaneously with CO2 measurement GM70 is a user-friendly meter for demanding spot measurements in laboratories, greenhouses, incubators, and mushroom farms. The meter can also be used in HVAC and industrial applications, and as a tool for checking fixed CO2 instruments. Vaisala CARBOCAPâ technology GM70 incorporates the advanced CARBOCAP sensor that has unique reference measurement capabilities. The measurement accuracy is not affected by dust, water vapor or most chemicals. The meter has a two-year recommended calibration interval. Two sampling methods The handle is for handheld diffusion sampling. GM70 pump enables pump- aspirated sampling from locations difficult to access otherwise. It is also ideal for comparisons with fixed CO2 transmitters. Interchangeable probes By plugging a different GMP220 series probe into the handle or pump, the user can easily change the measurement range of GM70. The meter can also be used as a calibration check instrument for Vaisala’s fixed CO2 instruments. GMW90 and GMP220 probes can also be adjusted by using the GM70 meter. GM70 has two probe inputs. Vaisala’s relative humidity and dew point probes can also be used simultaneously with CO2 measurement. The two ports of MI70 allow measuring CO2 and RH/Td simultaneously Benefits
  • Proven Vaisala CARBOCAP â reliability
  • Wide selection of measurement ranges
  • Easy recalibration using the interchangeable probes
  • Suitable for field checking of fixed CO2 instruments
  • Short warm-up time
  • Compact and versatile MI70 Link Windowsâ software The optional MI70 Link Windowsâ software and the USB connection cable form a practical tool for transferring logged data and real time measurement data from GM70 to a PC.

GMP220 probe measurement performance 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 Measurement ranges High concentrations of CO2, short probe (GMP221) 0 … 20 % Low concentrations of CO2, long probe (GMP222) 0 … 2000 ppm, 0 … 3000 ppm, 0 … 5000 ppm, 0 … 7000 ppm, 0 … 10 000 ppm Accuracy (at 25 °C and 1013 hPa) 1) GMP221 probe ±(1.5 % of range + 2 % of reading) 2) GMP222 probe ±(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 Measurement environment Operating temperature −20 … +60 °C (−4 … +140 °F) GM70PUMP Relative humidity 0 … 100 %RH, non-condensing Operating pressure 700 … 1300 hPa Flow range (diffusion sampling) 0 … 10 m/s 1) Including repeatability, non-linearity and calibration uncertainty. 2) Applies to concentrations above 2 % of full scale. GMP220, GMH70, and GM70PUMP mechanical specifications Probe cable length 1.9 m (6.2 ft) IP rating GMH70 handle IP65 GM70PUMP IP54 Housing material GMP221 and GMP222 probe PC plastic GMH70 handle ABS/PC blend GM70PUMP Aluminum casing Weight GMH70 with GMP221/GMP222 probe 230 g (8 oz) GM70PUMP with GMP221/GMP222 probe 700 g (25 oz) Storage Storage temperature −30 … +70 °C (−22 … +158 °F) Storage humidity 0 … 100 %RH, non-condensing MI70 measurement indicator Operating environment Operating temperature −10 … +40 °C (+14 … +104 °F) Operating humidity 0 … 100 %RH, non-condensing Storage temperature −40 … +70 °C (-40 … +158 °F) Inputs and outputs Max. no of probes 2 PC interface MI70 Link software with USB or serial port cable Power supply Rechargeable NiMH battery pack with AC adapter or 4 × AA size alkalines, type IEC LR6 Analog output: 1) Scale 0 … 1 V DC Output resolution 0.6 mV Accuracy 0.2 % full scale Temperature dependence 0.002 %/°C (0.01 %/°F) full scale Minimum load resistor 10 kΩ to ground Mechanical specifications Housing classification IP54 Housing materials ABS/PC blend Weight 400 g (14 oz) Compatibility EMC compliance EN 61326-1, portable equipment Other Menu languages English, Chinese, Spanish, Russian, French, Japanese, German, Swedish, Finnish Display LCD with backlight Graphic trend display of any parameter Character height up to 16 mm (0.63 in) Alarm Audible alarm function Data logging capacity 2700 real time data points Logging interval 1 s to 12 h Logging duration 1 min … memory full Resolution 0.01 %RH, 0.01 °C/°F, 0.01 hPa, 0.01 aw, 10 ppm / 0.01 %CO2 1) The specifications apply only when analog output is enabled for the handheld meter. MI70 battery operation time 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

Dimensions in mm (inches) Spare parts and accessories Connection cables Analog output cable for 0 … 1 V DC 27168ZZ Connection cable for fixed CO2 instruments GMT220, GMM220, GMD20, and GMW20 series GMA70 Connection cable for GMP343 DRW216050SP Connection cable for GMW90 series 219980SP Connection cable for GMP250 series CBL210472 Probe extension cable (10 m (33 ft)) 213107SP Flat cable for GMP220 series probes, M12/8-pin 238651 Carrying cases Weatherproof carrying case MI70CASE3 Soft carrying case for diffusion handle and probe MI70SOFTCASE Probe accessories Spare probe (use the GM70 order form to define measurement range etc.) GMP221, GMP222 Others Measurement indicator MI70 USB PC connection cable (for use with MI70 Link software) 1) 219687 Rechargeable battery for MI70, NiMH 4.8 V 26755 Calibration adapter for GMP220 series probes 26150GM Nafion™ membrane tubing 212807GM Aspiration pump for GM70 GM70PUMP GM70 replacement handle GMH70 1) Vaisala MI70 Link software for Windows is available at www.vaisala.com/mi70link. Published by Vaisala | B210824EN-G © Vaisala 2021 All rights reserved. Any logos and/or product names are trademarks of Vaisala or its individual partners. Any reproduction, transfer, distribution or storage of information contained in this document is strictly prohibited. All specifications — technical included — are subject to change without notice. www.vaisala.com