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GMP251 Carbon Dioxide Probe

GMP251 Carbon Dioxide Probe
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GMP251 Carbon Dioxide ProbeFor %-level measurements Features • Measurement range 0 ... 20 %CO2 • Intelligent, stand-alone probe with analog and digital outputs • Compatible with Indigo transmitters and Insight PC software • Wide operating temperature range (-40 ... +60 °C) • IP65-classified housing • Full temperature and pressure compensations • 2nd-generation proprietary CARBOCAP® technology • Integrated temperature measurement for CO2 compensation purposes • Compensations for background gases, O2, and humidity • Sensor head heated to prevent condensation Vaisala CARBOCAP® Carbon Dioxide Probe GMP251 is a new intelligent probe for measuring carbon dioxide. This robust, stand-alone measurement device is designed for use in demanding applications, such as life science incubators, where stable, reliable, and accurate performance is required. • Superior long-term stability • Reliable and accurate • Calibration certificate included GMP251 is based on Vaisala's unique, second-generation CARBOCAP technology that enables exceptional stability. A new type of infrared (IR) light source is used instead of the traditional incandescent light bulb, which extends the lifetime of GMP251. GMP251 incorporates an internal temperature sensor for compensation of the CO2 measurement according to ambient temperature. The effects of pressure and background gas can also be compensated for. The measurement range is 0 ... 20 %CO2 and the sensor performance is optimized at 5 %CO2 measurement. The operating temperature range of the probe is wide (-40 ... +60 °C (-40 ... +140 °F)), and the probe housing is classified as IP65. Condensation is prevented as the internal sensor head is heated. GMP251 is resistant to dust and most chemicals, such as H2O2 and alcohol-based cleaning agents. Ease of use GMP251 is a compact probe with easy and fast plug-in, plug-out installation. The surface of the probe is smooth, which makes it easy to clean. The probe provides several output options, including analog current and voltage outputs and digital RS-485 output with Modbus protocol. GMP251 can be connected to Indigo series transmitters for an extended range of output and configuration options. See www.vaisala.com/indigo. For easy-to-use access to field calibration, device analytics, and configuration functionality, the probe can be connected to Vaisala Insight PC software. See www.vaisala.com/insight. Applications GMP251 is ideal for life science incubators, cold storages, fruit and vegetable transportation, and for all demanding applications where stable and accurate %-level CO2 measurements are nee

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< 10 l/min 0.1 ... 0.8 l/min Sensor head heating, when power on EN61326-1, Generic Environment • H2O2 (2000 ppm, noncondensing) • Alcohol-based cleaning agents (for example ethanol and IPA) • Acetone • Acetic acid Accuracy at 25 °C (77 °F) and 1013 hPa (incl. repeatability and non-linearity) At 5 %CO2 ±0.1 %CO2 Temperature dependence With compensation at 5 %CO2, < ±0.05 %CO2 0 ... +50 °C (+32 ... +122 °F) With compensation, ±0.045 % of reading/°C 0 ... 20 %CO2,-40 ... +60 °C (-40 ... +140 °F) Without temperature compensation at -0.25 % of reading/°C 5 %CO2 (typical) Pressure dependence With...

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Analog outputs Digital output Operating voltage With digital output in use With voltage output in use With current output in use Power consumption Typical (continuous operation) Maximum • 0 ... 5/10 V (scalable), min. load 10 kQ • 0/4 ... 20 mA (scalable), max. load 500 Q Over RS-485: • Modbus • Vaisala Industrial Protocol 12 ... 30 VDC 12 ... 30 VDC 20 ... 30 VDC 0.4 W 0.5 W Spare parts and accessories Standard membrane filter ASM211650SP Porous sintered PTFE filter DRW243649SP Probe cable with open wires (1.5 m) 223263SP Probe cable with open wires and 244669SP 90° plug (0.6 m) Probe...

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