The HY-OPTIMA 1740 in-line, real time hydrogen-specific process analyzers are designed for ease of use, interface flexibility and true process control. The HY-OPTIMA 1740 is an intrinsically safe device that incorporates our patented solid-state sensor and is configured to operate in background gas streams having carbon monoxide concentrations up to 20% by volume, hydrogen sulfide concentrations up to 10% by volume, up to 95% relative humidity and temperatures up to 60ºC. The HY-OPTIMA 1740 is ideal for hydrogen gas production, petroleum refining and petrochemical applications where continuous real time measurements of hydrogen can increase process plant efficiencies, improve diagnostics and enhance maintenance management translating into higher profitability.



Hydrogen Sensitivity Range:
0.5% to 100% hydrogen at 1 ATM

Response Time: T90 < 60 sec
Ingress Protection: IP64 capable
Recommended Verification Interval: 90 days
Product Life Expectancy: 10 years
± 0.3% absolute for 0.5 to 10% H2
± 1.0% absolute for 10 to 100% H2
± 0.2% absolute for 0.5 to 10% H2
± 0.4% absolute for 10 to 100% H2
± 0.2% absolute for 0.5 to 10% H2
± 0.4% absolute for 10 to 100% H2
± 0.2% absolute for 0.5-10% H2
± 0.4% absolute for 10-100% H2

Interface Options

Power Barrier Input Voltage: 24 VDC nominal
Power Barrier Input Voltage Range: 20 VDC to 28 VDC
Intrinsically Safe Sensor Input Voltage: 10 VDC
Sensor Input Voltage Range: 5 VDC to 28 VDC
Input Power: 10 W
Analog Output: 4 mA to 20 mA
Serial Communication Options: RS422


CE 0359, Ex
II 1 G, Ex ia II H2, d+d IIB T3
II 2 G, Ex ib II H2, ib d IIB T3

Operating Conditions

Process Gas Tolerance:
    CO tolerance up to 20% by volume
    H2S tolerance up to 10% by volume
Operating Humidity: 0% to 95% RH
Flow Rate: 0.1 slpm to 10 slpm
Pressure: 0 to 2 bar gauge, 0 to 30 psi gauge
Process Gas Temperature Range: -20ºC to 60ºC
Operating Temperature Range: -20ºC to 40ºC
Storage Temperature Range: -40ºC to 50ºC
Calibration Background Gas: Nitrogen

Included Accessories

Intrinsically Safe Power Barrier
Armored Power / Analog Cable: 4 m
Calibration Cup

Optional Accessories

Single Channel Intrinsically Safe Analog Output Barrier (with or without relays)

Single Channel Intrinsically Safe RS422 Serial Interface Barrier

Serial Interface Cable: 4 m (custom lengths available)

Armored Power / Analog Cable (custom lengths available)

Adapter Fittings

½ in. MNPT thread
½ in. FNPT thread
-8 SAE/MS thread size
... and many other industry standards.


Total Length: 10.3 in.
Length of Enclosure: 6.8 in.
Length of Tube: 2.9 in.
Width: 3.4 in.



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