HD402 Series – Low Pressure Transmitters
Brand: Delta OHM S.R.L.
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HD402 Series – Low Pressure Transmitters
Brand: Delta OHM S.R.L.The presence of very pure air, i.e. with a very low content of microparticles of suspended dust, is in some fields mandatory.
In the industrial and scientific research and microelectronics industry in general, in the field of bottling and food and moreover in the pharmaceutical field, cleanrooms are used to always ensure a controlled atmosphere.
Especially in these applications, a highly precise and reliable instruments are indispensable for the measurement of differential pressure.
The series of small and compact transmitters HD402xT… is suitable for measuring relative pressure with respect to atmosphere or differential pressure in the range from as low as 0-50 Pa to 0-200 kPa .
Features- Accurate and Reliable
- Great Flexibility
- Immediate and Direct Reading
- Easy To Set Up and Quick To Install
Specifications
Brand
Sensor
- Piezoresistive, high stability
Output
- HD402T: active analog 0…10 Vdc (RLmin =10 kΩ) or 0/4…20 mA (RLmax = 500 Ω)
- HD402AT: 2-wire (current loop) 4…20 mA (RLmax = (Vcc-12)/0,022)
- HD404ST: digital RS-485 Modbus-RTU
Response Time
- 0.5 seconds for the display updating For transmitters: configurable 0.125, 1, 2 or 4 seconds for the output
Connection to PC
- HD402T/ HD402AT RS-232 serial port can be connected to a USB port by using the optional CP27 adapter
- HD402ST: can be connected to a USB port by using the optional RS48 adapter
Zero Calibration
- Manual
Compatible Media
- Only air and non-aggressive dry gases
Power Supply
- HD402T: 24 Vac ± 10 % or 18 to 40 Vdc
- HD402AT/ HD404ST: 12 to 30 Vdc
Absorption
- HD402T/ HD402AT: < 1 W @ 24 Vdc
- HD402ST: < 100 mW @ 12 Vdc
Pressure Connection
- Nickel-plated brass, Ø 6 mm
Electrical Connections
- Screw terminal block, max. 1.5 mm2 , PG9 cable gland
Operating Conditions
- -10 to +60° C / 0 to 95 % RH
Storage Temperature
- -20° to +70° C
Protection Degree
- IP65
- Control of HVAC
- Filter Control
- Clean Rooms Monitoring
- Pneumatic Control
- Respirators
- Vaporizers
