Performance |
Phase | Phase 1 - H2 in Air | Phase 2 - H2 in CO2 | Phase 3 - CO2 in Air |
Measurement Range | 80-100% or 90-100% | 0-100% | 0-100% |
Display resolution | 0.01% | 0.1% | 1% |
Response time (T90) | <20 seconds | <20 seconds | <50 seconds |
Recommended calibration | Montly | Prior to use | Annually |
Measurement Technology | Thermal Conductivity sensor |
Gas Requirements | Non-condensing sample with particles <3μm |
Display Type | Backlit LCD |
Repeatability | ±0.2% of span |
Linearity | ±1% span |
Sample Flow Rate | 100 to 600 ml/min |
Sample Flow Effect (calibrated at 300 ml/min) | < 1% of span for flows: 100 to 600 ml/min |
Sample Pressure | 0 to 3 barg with atmospheric vent |
Sample Temperature | 0 to +45°C max |
Sample Cell Temperature | +50°C |
Electrical Specifications |
Analog Inputs | 2 off 4-20 mA inputs One to control phase selection One for an external sensor that can be displayed on the screen |
Analog Outputs | 2 off 4-20 mA outputs: mA 1 = Concentration mA 2 = Phase indication |
Alarms | 2 off single pole changeover (SPCO) relays (250 V, 5 A max) |
Digital Communications | MODBUS RTU over RS485 Protocol |
Power Supply | 24 V DC; 1.5 A max |
Operating Conditions |
Ambient Temperature | -15 to +55°C |
Mechanical Specifications |
Warm Up and Stabilization Time | < 30 minutes |
Dimensions | 234 x 234 x 172mm (w x d x h) |
Weight | 9.7kg |
Wetted Materials | 316 stainless steel, boroscillicate glass,
platinum, Viton |
O-Ring Materials | Viton |
Gas Connection | 1/4” NPT to 1/4” tube (standard) 1/4" NPT to 6mm tube (optional) |
Ingress Protection | IP66, NEMA 4 |
Hazardous Area Classification |
ATEX | II 2GD Ex d IIB +H2 T6 Gb Ex tb IIIC T85°C Db IP66 -15°C to +55°C |
IECEx | Ex d IIB +H2 T6 Gb Ex tb IIIC T85°C Db IP66 -15°C to +55°C |
CCSAUS | Class I, Division 1, Groups B,C,D T6C |
TC TR | 1Exd IIB+H2 T6 Gb |