The HMP45C is a rugged, accurate temperatureRH probe manufactured by Vaisala Inc. The probe uses a HUMICAP capacitive polymer H chip to measure relative humidity over the 0 to 100% RH range. A PRT measures temperature over the -40 to +60C range. To reduce the current drain, power can be supplied to the HMP45C only during measurement when the sensor is connected to the datalogger's switched 12 V terminal. Dataloggers that do not have a switched 12 V terminal, such as the CR510 or CR7, can use the SW12V Switched 12 V device to switch power to the sensor only during measurement.Yearly HMP45C recalibrations are recommended. Features Temperature measurement uses PRTRH measurement uses capacitive RH chip41003-5 radiation shield recommended when exposed to sunlightBased on Vaisala HMP-series sensors13367 Sensor Head available to facilitate recalibrationA HMP45C housed in a 41003-5 can be mounted to a mast or crossarm Specifications Supply Voltage: 12 Vdc nominal (typically powered by datalogger) Current Consumption: 4 mA (active) Relative Humidity Sensor: Vaisalas HUMICAP H-chip Measurement Range: 0.8% to 100% RH, non-condensing Output Signal Range: 0.008 to 1 Vdc Accuracy at 20C: Against Factory Reference: 1% RH Field-Calibrated Against References: 2% (0% to 90% range);3% (90% to 100% range) Temperature Dependence: 0.05% RHC Long-Term Stability: Typically, better than 1% RH per year Response Time: 15 seconds with membrane filter (at 20C, 90% response) Settling Time: 500 milliseconds Temperature Temperature Sensor: 1000 ohm Platinum Resistance Thermometer Measurement Range: -39.2 to +60C Output Signal Range: 0.008 to 1.0 V Accuracy: see graph in product brochure Producing Area:USA
Beijing, China
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Jack (Beijing Channel Scientific Instruments Co.,Ltd.)
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