HD48 Series – Active Temperature-Humidty Transmitters
Brand: Delta OHM S.R.L.
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HD48 Series – Active Temperature-Humidty Transmitters
Brand: Delta OHM S.R.L.HD48 transmitters are designed for temperature and humidity control in conditioning and ventilation applications (HVAC/BEMS).
The models of the HD48 series are active transmitters and accept both direct and 24Vac alternating power supply; they have standard current (4…20mA) or voltage (0…10V) outputs, or a serial RS485 output*, depending on the model.
Available models:
- horizontal probe for duct mounting (TO),
- vertical probe for wall mounting (TV),
- probe with 2 or 5 m cable (TC),
- fixed contact Pt100 probe for solar panel (TFP)
Specifications
Brand
Relative Humidity Sensor
- Capacitive
Relative Humidity Measuring Range
- 0 to 100 %RH
Relative Humidity Accuracy at T=15…35° C
- ± 1.5 %RH (0…90 %RH)
- ± 2.0 %RH (90…100 %RH)
Relative Humidity Accuracy at Rest of T Range
- ± (1.5+1.5 % of the measure) %RH
Relative Humidity Repeatability
- 0.4 %RH
Temperature Measuring & Working Range
- Standard: -20° C to 80° C
- Extended: -40° C to 150° C
Temperature Sensor
- Standard: NTC 10kΩ
- Extended: Pt100 class A
Temperature Accuracy
- Standard: ± 0.3° C (0° C to 70° C)
- Standard: ± 0.4° C (-20° C to 0° C, +70° C to 80° C)
- Extended: ± 0.3° C
Temperature Repeatability
- Standard: 0.05° C
- Extended: 0.05° C
Dew Point Sensor
- Parameter calculated from relative humidity and temperature
Dew Point Measuring Range
- -20° C to 80° C DP
Dew Point Repeatability
- 0.5° C DP
Power Supply
- 18…40 Vdc or 24 Vac ± 10 %
- 12…30 Vdc for Modbus output
Consumption
- 4 mA @ 24 V(models with voltage output)
- 4 mA @ 24 V with open output
- 20 mA @ 24 V with 12 mA output (models with current output)
- 2 mA @ 24 V models with serial RS-485 output
Electrical Connections
- Screw type terminal block, max. 1,5 mm
- M16 cable gland for input cable
Electronics Protection Class
- IP66
Materials
- ABS
- Polycarbonate
