The American AII GPR-7500 AIS Online PPM Hydrogen Sulfide Analyzer is ATEX and cUL certified for product certification applications. Equipped with an advanced tracking PPM hydrogen sulfide sensor, it can accurately measure hydrogen sulfide concentrations ranging from 1 PPM to 2000 PPM, with an operational lifespan exceeding 24 months. It requires no regular maintenance, features menu-driven controls, and offers optional dual-point alarm setpoints. For more information on AII oxygen analyzers...

Model: GPR-7500

Principle: Electrochemical sensor

Range: 0–10/50/100 PPM H₂S, auto/manual range, optional 0–500/1000/2000 PPM H₂S

Accuracy: 1% of range (at normal temperature and pressure)

Sensitivity: <0.5% of FS Range

Linearity: ±1% of full scale

Response Time: 35 seconds to reach 90%

Sensor Expected Lifespan: 24 months (at normal temperature and pressure)

Electrical Characteristics

Display: Large-screen LCD display, minimum resolution: 0.1 ppm, real-time display of ambient temperature and pressure.

Control Keys: Waterproof buttons for easy selection of power on/off, range, calibration, alarm, and system settings.

Explosion Protection: Intrinsically safe explosion-proof, explosion-proof rating: Class 1, Division 1, Group C, D (certifiable: ATEX II 2G EX[ib] IIB T4).

Operating Conditions

Calibration: 50–100 PPM H₂S calibration gas (balance gas air)

Pressure: 5–30 Psig

Flow Rate: 0.5–5 SCFH, recommended: 2 SCFH

Temperature: -10°C to 45°C

Power Supply: 12–24V DC or 100/230V AC

Output: 4–20mA

Alarm: Two user-adjustable relay alarms

Dimensions: 21×9×6″

Backplate: 41cm×40cm

Mounting Holes: Hole distance from top edge 8mm, from left edge 122mm, two holes spaced 76mm apart. Hole size 9mm. The two lower holes are the same as above.

Weight: 20 lbs (approx. 9 kg)

Enclosure: Aluminum oxide material, NEMA 4X enclosure.

Preprocessing System: Flow control valve and flow meter, three-way valve for calibration

Gas Connection: 1/4” stainless steel compression fitting