Acorn Controls
Acorn Controls
Kothrud, Pune, Maharashtra
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Hydrogen Gas Monitors

Offering you a complete choice of products which include multi channel h2 transmitter for bms and two wire h2 transmitters model h2sense-4220tx.

Approx. Rs 25,000 / Piece(s)
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8Channel Hydrogen Transmitter.:

Large capacity lead Acid Batteries emit Hydrogen - during Charging phase- especially during near full charge/ over charge conditions .This causes inflammable gas mixture of Hydrogen and Oxygen in the atmosphere. H2-485TX-8CH enables to gathers data from up to 8 hydrogen sensors type H2SENSE1205 and can be interfaced to a BMS on RS485 transmission bus with MODBUS protocol in RTU mode. The transmitter acts as a Slave to the BMS.

H2-485TX-8CH is a high reliability product needed as safety equipment in an early warning of potential Hydrogen build up. Hydrogen thus can be kept below LEL ( Lower explosive Limit ). Typically, H2 levels of 0.5% and 1% are used to trigger ventilation and Alarm respectively,are used by the BMS. H2-485TX-8CH interfaces to a highly-selective, rugged solid state hydrogen sensors H2SENSE1205 described elsewhere.

Below are the of the Specifications Product:

  • Transducer compatibility : H2SENSE1205
  • Range : 0 to 2% Hydrogen ( or higher on demand )
  • No.of Channels : Up to 8 per transmitter
  • No.of Transmitters : Up to 31 as Slaves in one RS485 loop, address s/w settable
  • Max distance : Up to 1 km from Transmitter to master
  • Termination : On Screwed terminals on card
  • Scan speed : 1 sec.per channel, 8 sec for all channels
  • Output : Galvanically Isolated RS485Transmission at 9600 baud
  • Data : Hydrogen Value per channel in HEX format
  • Power : 24Vac 50Hz or dc /- 10% ,4VA max
  • Power to Transducers : Current limited ~11Vdc to15Vdc
  • Housing : IP65 , 220x120x80 , aluminum , Wall Mounting

Additional Information:
  • Item Code: RS4858

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Approx. Rs 45,000 / Piece
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By utilizing our years of experience, we bring forth Two Wire H2 Transmitters. The transmitter is easy Ceiling mount type and is Intrinsically safe/ suitable for group IIC Zone2 hazardour area applications. Ideal for Hazardous area remote monitoring and control for safety applications in chemical process plants.


  • 12 to 30 Vdc operation in max 500ohms load 4 to 20mA transmitter
  • Intrinsically safe , zero power Solid sate H2 sensor
  • Virtually Zero cross sensitivity to other than Hydrogen gas
  • Long life ( > 5 years ) rugged Hydrogen Sensor
  • Low cost
  • In-situ Calibration kit available


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Acorn Controls
Harsh Sahasrabuddhe  (CEO)
No. 4, Mayuresh Apartments, 104, Mayur Colony Kothrud
Pune - 411038 , Maharashtra , India
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