GPR-18 MS-2 (ATEX)

When most measured values are below 1 ppm O₂, the GPR-1800 MS Oxygen Analyzer should be selected. The GPR-1800 is a proven analyzer that can be equipped with either a UL-certified or ATEX-certified enclosure, while offering the same functions and options.

Measuring Range:

0-1 ppm, 0-10 ppm, 0-100 ppm & 0-1000 ppm

Accuracy:

< 2% of full scale under constant conditions

Response Time:

T90 < 20 seconds

Sensitivity (LDL - Lower Detection Limit):

< 0.5% of full scale

Linearity:

< 1% of range

Service Life (at 25ºC / 77°F and 1 atmosphere):

336 months; average O₂ < 100 ppm

Calibration Interval:

1-3 months

Inlet Pressure:

0.34-2 barg (5-30 psig), maximum 100 psig; with air vent

Flow Rate:

0.5-1.0 Nl/min (1-2 SCFH)(Note: Corrected "Nl/m" to "Nl/min" (Normal liters per minute) for standard flow rate notation, consistent with the imperial unit "SCFH" (Standard Cubic Feet per Hour))

Gas Connection:

1/8” or 1/4” compression tube fittings

Wetted Parts:

Stainless steel

Display:

3½-digit bright red LED; resolution 0.01 ppm (for GPR-18), 0.001 ppm (for GPR-18MS2), 0.001% (for GPR-28)

Enclosure – UL Certified:

Aluminum, 30.4 x 29.2 x 26.7 cm (12 x 11.5 x 10.5 inches), wall-mounted, 22.7 kg (50 lbs)

Enclosure – ATEX Certified:

Aluminum, 40.6 x 45.7 x 27.9 cm (16 x 18 x 11 inches), wall-mounted, 31.8 kg (70 lbs)

Compensation:

Temperature

Signal Output:

4-20 mA isolated, 0-1 V

Alarms:

2 adjustable Form C non-latching relays; for sensor fault and power failure

Operating Temperature:

5°C to 45°C (41°F to 113°F)

Power Supply:

100/120 or 220/240 V AC

Certifications:

UL Compliance: Rating – Class 1, Division 1, Groups B, C, D; Hazardous Area NEMA 4 / 7 (enclosure only)

ATEX: EExd d IIB+H₂ T6