Relative Humidity Sensor

Building science research

• Building envelope cavity validation

• Indoor and outdoor air quality analysis

Restoration

• Verification of equipment status

• Drying progress

Industrial Applications

• Process control

• Hygrostat

• Hermetic Housing

• Humidity calibrated within ±2% @55% RH

• Small size

• Compatible with SMT WiDAQ & A3 NEMA

• Full interchangeability

• High reliability and long term stability

• Not affected by water immersion

• Instantaneous de-saturation after long period in saturation phase

• Fast response time suitable for low voltage wireless applications.

• High resistance to chemicals

• Unique solid polymer structure

Electrical Characteristics

Operating Voltage (with SMT A3): 0V to 5VDC

Sensing Element: HTM2500

Environmental

Operating Temperature: -30° to 70°C

Operating Humidity Range: 0% to 100%

RH Storage Temperature: -40° to 85°C

Storage Humidity: 0% to 100% RH

Humidity Characteristics

Humidity Measuring Range: 1% to 99% RH

RH Accuracy (10 to 95% RH): ±3 to ±5 %

RH A3 Supply Voltage: 5VDC

Current Consumption: 0.4mA

Temperature Coefficient (10°C to 50°C): ±0.1 %RH/°C

Average Sensitivity from 33% to 75% RH: +25 mV/%RH

Recovery time after 150 hours of condensation: 10 seconds

Humidity Hysteresis: ±1.5 %RH

Long term stability: ±0.5 %RH/yr

Time Constant (at 63% signal, static):  33% to 76% RH 5 seconds