| | GPR-35 | GPR-2500-S | GPR-2800-IS/AIS-S |
| Measurement range | 0-25% | 0-25% | 0-25% |
| Accuracy | < 2% of range at constant conditions | < 2% of range at constant conditions | < 2% of range at constant conditions |
| Response time | T90 < 10 seconds | T90 < 10 seconds | T90 < 10 seconds |
| Sensitivity (LDL) | 0.1% O2 | 0.1% O2 | 0.1% O2 |
| Linearity | < 1% of scale | < 1% of scale | < 1% of scale |
| Sensor model | GPR-11-32-RTS | GPR-11-32-4
XLT-11-24-4 for gases containing >0.5% CO2 | GPR-11-32-4
XLT-11-24-4 for gases containing >0.5% CO2 |
| Sensor life at 25ºC (77°F) and 1 atm | 32 months in air | GPR-11-32-4 32 months in air 5°C and 1 atm
XLT-11-24-4 24 months in air 5°C and 1 atm | GPR-11-32-4 32 months in air 5°C and 1 atm
XLT-11-24-4 24 months in air 5°C and 1 atm |
| Calibration interval | 30 days | 30 days | 30 days |
| Inlet pressure | Atmospheric sampling | Atmospheric sampling | Atmospheric sampling |
| Gas connections | None | None | None |
| Display | 3½ digit LCD; resolution 0.1 | LCD 7 x 3.5cm (2.75 x 1.375"); resolution 0.1% | LCD 7 x 3.5cm (2.75 x 1.375"); resolution 0.1% |
| Enclosure | Painted aluminum, suitable for indoor use only | Fiberglass NEMA 4X | Fiberglass NEMA 4X, plus painted aluminum Exd enclosure |
| Dimensions | 10.1 x 22.8 x 7.6cm (4x9x3") | 17.1 x 21.3 x 10.8cm (6.75 x 8.375 x 4.25") | 25.3 x 40cm (10 x 15.7") |
| Weight | 3.6kg (8lbs) | 3.6kg (8lbs) | 6.5kg (14.6 lbs) |
| Compensation | Barometric pressure and temperature (GPR-35 and GPR-2800 AIS S)
Temperature (GPR-2500 and GPR-2800 IS S) | Barometric pressure and temperature (GPR-35 and GPR-2800 AIS S)
Temperature (GPR-2500 and GPR-2800 IS S) | Barometric pressure and temperature (GPR-35 and GPR-2800 AIS S)
Temperature (GPR-2500 and GPR-2800 IS S) |
| Signal output | 0-1V | 4-20 mA (or 1-5V on GPR-2800 AIS) | 4-20 mA (or 1-5V on GPR-2800 AIS) |
| Alarms | Two adjustable SPDT Form C non-latching relay contacts | None | Two user-configurable alarms magnetic coil relays rated 3A at 100 V AC (AIS only) |
| Operating temperature | 0°C to 45°C (32°F to 113°F) | GPR sensor: 5°C to 45°C (41°F to 113°F)
XLT sensor: -10° to 45°C (14°F to 113°F) | GPR sensor: 5°C to 45°C (41°F to 113°F)
XLT sensor: -10° to 45°C (14°F to 113°F) |
| Humidity | Non-condensing up to 95% RH | Non-condensing up to 95% RH | Non-condensing up to 95% RH |
| Power | 100-240 V AC with battery back-up (battery life up to 30 days or 8 hours in alarm mode) | 18-28 V DC | 18-24 V DC (IS model)
18-24 V DC or 110 to 220 V AC (ATEX AIS only) |
| Area classification | General purpose CSA/NRTL approved | General purpose or with external safety barrier MTL-7706 or equivalent
ATEX: II 2 G
Ex ia IIB T4 Gb
Tamb -20°C to +50°C | ATEX: II 2 G
Ex d [ib] ib IIB Gb T4
Tamb -20°C to +45°C |
