BPIT, Inc. - Temperature, Humidity, Pressure Regulators with Relay and RS232

Temperature, Humidity, Pressure Regulators with Relay and RS232

By: Envitech Ltd.

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  • H3331 - Temperature+humidity+3 binary inputs. Probe including cable.
  • H3331 Maximum measured ranges: -30 to +105°C. Stem Length: Probe cable 1,2,4m.
  • H4331 - Temperature+3 binary inputs.
  • H4331 Maximum measured ranges: -200 to +600°C. Temperature transducer for RTD Pt1000 probes with accuracy of the input without probe: ±0.2°C
  • H7331 - Temperature+humidity+atm. pressure+3 binary inputs.
  • H7331 Maximum measured ranges: -30 to +105°C. Stem Length: Probe cable 1,2,4m. Pressure sensor is located in the control unit with display. barometer enable to measure sea level pressure.


General Aspects:

Envitech Ltd Humidistats are designed for two-state control of e.g. heating, ventilation, humidifier, dehumidifier, etc. Transmitter is equipped with two relay outputs for alarm indication or control of external devices. Each relay can be assigned to any measured or computed value. For each relay setting of delay, hysteresis, audible alarm is enabled. Measured values are converted to RS232 serial output.
Fully equipped transmitter contains temperature, humidity, pressure sensors. Measured temperature and relative humidity is recalculated to other humidity interpretations - dew point temperature, absolute humidity, specific humidity, mixing ratio or specific enthalpy.
Parameters are easy adjustable from regulator keyboard or from the computer. Large dual line LCD for simultaneous display of temperature, pressure or relative humidity or other calculated humidity interpretation is an advantage. State-of-the-art capacitive polymer sensor ensures excellent calibration long term stability, inertia against water and condensation. Transmitter is designed for use in non-aggressive environment. Transmitter is also equipped with three binary inputs for detection of two-state events - e.g. water, smoke, glass break detection, door contact.


Description Specification
Maximum switching voltage, current, power of relay output:  50V, 2A, 60VA
Audible alarm:  from built-in beeper - switchable
ccuracy of temperature measurement:  ±0.4°C from -30 to +100°C, ±0.4% from reading over +100°C
Accuracy of relative humidity measurement:  ±2.5% relative humidity from 5 to 95% at 23°C
Accuracy of temperature measurement:  ±0.4°C
Accuracy & measuring range of dew-point temperature:  ±1.5°C at ambient temperature T30% range -60 to +80°C