HW group Sensor 0-20mA 1W-UNI

Isolated DC current sensor for the 1Wire-UNI bus. Sensor for measuring currents in the 0–20mA range. It is typically used to connect an industrial probe with 4–20mA output - 4wire with a discrete power supply (e.g. to measure the fuel level in a tank). The sensor current output is processed in Poseidon2 or Ares units to ber accessible via LAN or GSM.

The sensor is equipped with an 8-points calibrating table/curve to set measured output appropriate to related industrial sensor. The calibration process is supported by 1W-UNI USB calibrator.USB dongle.


Applications and usage:

• Connecting industrial sensors to Poseidon or Ares systems
• Connecting current transformers
• Connecting electronic scales
• Measuring the concentration of CO2 or other gases
• Connecting pressure transducers or other industrial sensors

Signal converter – sensor to measure 0-20 mA from an external current source. 1-Wire UNI bus (RJ11) output. The current input is electrically isolated from the 1Wire-UNI bus.

Measure the output current of any external industrial sensor that sources 0-20 mA (“source” type). For example, the output current of a current transformer.

Almost any industrial sensor can be connected to Poseidon2 or Ares units in this way. The values can be shared over LAN or GSM. When the current is out of a specified range, e-mail or SMS is sent. Can be connected to remote monitoring systems that are based on SNMP or Modbus/TCP.

• The 0-20mA input is electrically isolated from the 1-Wire UNI bus (RJ11).
• The sensor can be used in industrial environments.
• Sensors can be daisy-chained (two RJ11 connectors).
• Powered from the 1-Wire UNI bus (RJ11) or from an external power adapter.
• Output reading in [mA] can be calibrated and/or converted to other units directly in the sensor.

SPECIFICATIONS

Bus
Type	1Wire-UNI (RJ11)
Connects to	Poseidon2 xxxx, Ares xx, Poseidon 2250, Poseidon 4002, SiteMon5
Connector	2x RJ11 (sensors can be daisy-chained)
Maximum distance	60m (total line length from the active port)
Electrical isolation	1Wire-UNI bus is electrically isolated from the 0-20mA input
Power
Power supply	1Wire-UNI bus
Power limits	One active RJ11 port can power at most two sensors. To boost the power, use our “1-Wire hub Power”.
Electrical isolation	0-20mA input electrically isolated from the 1Wire-UNI (RJ11)
Sensor input
Connector	2-pin terminal block ( I+ , I-)
Supported sensors	External current-sourcing probe, “0-20mA DC (source)” type
Input range	0-20 mA (max. 30V)
Input protection	Protective fuse (fast) -63 mA
Accuracy	2% of the full 20mA range / 25°C
Sensor output
Resolution	1 decimal place
Displayed units	Default: [mA] If you need a conversion (e.g. to [m], [mm], [hPa], [ppm]), contact your distributor.
Measuring period	Once per second
Miscellaneous
Operating conditions	-40 to +85 °C (-40 to +185 °F) / 5 to 70% RH
Dimensions / mass	65 x 80 x 30 [mm] / 200 g