| Measurement range | 0-20, 0-50, 0-100 ppm | 0-20, 0-50, 0-100 ppm (standard ranges)
0-500, 0-1000, 0-2000 ppm (optional ranges) | 0-20, 0-50, 0-100 ppm |
| Accuracy | ±2% of selected range at constant conditions |
| Response time | T90 < 60 seconds |
| Sensitivity (LDL) | 0.1 ppm |
| Linearity | <2% of scale |
| Sensor model | OSV-72-7HH-LM (standard ranges) | OSV-72-7HH (standard ranges), OSV-72-7HH-LD
OSV-72-7H (up to 2000 ppm), OSV-72-7H-LD | OSV-72-7HH-LM (standard ranges) |
| Sensor life 25ºC (77°F) and 1 atm | 24 months |
| Calibration interval | 1-3 months - see manual for individual models |
| Inlet pressure | 0.34-2 barg (5-30 psig); vent - atmospheric | atmospheric |
| Sample flow rate | 0.5 l/m (1 SCFH) | None, measures H2S in ambient air |
| Auxilary air flow rate | 0.5 l/m (1 SCFH)
1.5 Nl/m (3 SCFH) for high range sensor
Instrument air required: regulated to 1 barg if internal pump not supplied |
| Gas connections | 1/8" Compression Type Fittings | 1/4" Sample/Span; 3/8" Vent line. | None |
| Wetted parts | Stainless steel |
| Display | Graphical LCD 7 x 3.5cm (2.75 x 1.375"); resolution 0.1 ppm |
| Enclosure | Painted aluminum NEMA 4X, 10.1 x 22.9 x 7.6cm (4 x 9 x 3") | NEMA Type 3R for rain in outdoor applications | Type 3R |
| Weight | 3.6kg (8 lbs) | 10 Kg (22 lbs) |
| Compensation | Temperature compensated | Temperature not required | Barometric pressure, temperature not required | Temperature not required |
| Signal output | 0-1V | 4-20 mA or 1-5 V DC |
| Alarms | None | Two user configurable alarms: magnetic coil relays rated 3A at 100 V AC, programmable alarm delays, alarm bypass for calibration and system fail alarm | None |
| LED indicators | LOW BATT Warning; CHARGE mode | NA |
| Operating temperature | -10° to 45°C (14°F to 113°F) |
| Power | Rechargeable battery, 8 hours day duty cycle | 18-28 V DC Transmitter, 12 V DC Pump | 12-28 V DC (UL or ATEX Certified) 110-220 V AC (ATEX Certified) Transmitter, 12 V DC PUMP | 12-28 V DC (UL or ATEX Certified) 110-220 V AC (ATEX Certified) | 18-28 V DC |
| Area classification | ATEX: II 2 G
Ex ib IIB T4 Gb
Tamb +5°C to +45°C |
UL: United States: UL 1203, UL 913, UL 508
ATEX: ATEX: II 2 G
Ex ib IIB T4 Gb
Tamb -20°C to +50°C |
