Fixed Gas Detection

FSD-753 / FHD-752 Hydrogen Sensor for Automotive & Fuel Cell Applications

Automotive Hydrogen Fuel Cell Sensor

The FSD-753 and FHD-752 are designed specifically for use in Hydrogen (H2) Fuel Cell and Automotive Hydrogen Combustion Engine applications. The FSD-753 sensor can be used to measure Hydrogen levels within the fuel cell, Hydrogen tank store, plus other areas within Hydrogen Vehicles.

The FHD-752 is essentially the same as the FSD-753 but in addition has an internal heater for applications where high humidity and rapid temperature changes can cause condensing moisture on the H2 sensor.

FSD-753 and FHD-752 drawing

Specification

Function:

Gas detection method: Diffusion type
Principle of detection: New ceramic type (contact combustion type)
Target gas: Hydrogen (H2) gas in Air
Detection range concentration: 0~20,000 ppm or 0~40,000 ppm
Warmup time: Output start time within 500ms

Environmental Condition

Operating temperature range: -35℃~100℃
Operating humidity range: <100%RH
Storage temperature range: -40℃~125℃
Pressure: 70~130kPa
Interference: Not effected by HC / H2S / N2 / CO / CO2 / NOX in the atmospheric environment.

Safety

Fault output: Under 0.2VDC (sensor disconnection)
Explosion-proof (non-certified): Designed not to be an ignition source in an atmosphere with a hydrogen concentration greater than 4%VOL (100%LEL) in air.

Construction

Dimension: Approx. 80mm(W) x 55mm(H) x 15mm(D) (excluding sensor and connector)
Weight: Approx. 103g
Ingress protection: Compliant to dustproof / waterproof IP-67
Water protection: The sensor part is protected by a hydrophobic filter

Electrical Characteristics

Input voltage: 12 VDC (8 ~16VDC)
Power consumption: Max. 0.5W / 12VDC (for continuous use)
Concentration signal output: 0.5~4.5V / 0~F.S. linear output to gas concentration
Over scale: 4.5~4.6V
Reverse connection: Has protection circuit
Accessory connection: (male side) Sumitomo Wiring Systems model 6188-00 4 poles (with 8cm harness)
Standards: EMC: EN 50270:2015, EMI ISO11452-2,-3,-4 compatible, EMS CISPR25 compatible, ESD ISO10605 compatible, RoHS: EN IEC 63000:2018

Receiver Request Characteristics

Input impedance: 10kΩ or more