The Nova Model 436 Series Tri-gas analyzer is designed specifically for monitoring H2 purity in the H2 feed to a power generator and to monitor the purging procedure during shut down. The analyzer can measure the following gases by switch selection :
Range 1: 0-100.0% H2 in Air
Range 2 : 0-100.0% H2 in CO2
Range 3 : 0-100.0% Air in CO2
A 4-20 mA output is provided for the range of 85-100% H2 in air, along with two gas alarms and a sensor fail alarm.
Method of Detection |
N/A Temperature controlled thermal conductivity (T/C) cell, cannot be burned out due to loss of flow or changing gases |
Ranges Available |
N/A Range 1 : 0-100% H2 in Air Range 2 : 0-100% H2 in CO2 Range 3 : 0-100% Air in CO2 |
Resolution |
N/A ±0.1% of gas measured |
Accuracy & Repeatability |
N/A ±1% F.S except in 85-100% H2 in Air range which is within 0.2% absolute H2 |
Drift |
N/A H2 in CO2 or Air in CO2 1% F.S. per week maximum drift, 0-100% H2 in Air range is ±0.2% per week |
Response Time (T-90) |
N/A 10-15 seconds to 90% step change - not including sample transport time |
Ambient Temperature Range |
N/A 0 to 49 ºC32 to 122 ºF |
Linearity |
N/A ±0.4% of F.S. on H2 in Air range, ±1% of F.S. in H2 or Air in CO2 ranges |
Size & Weight |
N/A Dimensions will vary depending on enclosure style and options required |
Power |
N/A 115 VAC, 60 Hz 220 VAC, 50 Hz |
Output Options |
N/A 4-20 mA into 500 ohms non-isolated standard Isolated 4-20 mA, RS232, RS485, MODBUS, Ethernet outputs |
Alarms |
N/A Alarm set points are field adjustable Alarms have front panel light for each alarm and SPST (normally energized) relay with 5A rating at 250VAC non-inductive load Dual alarms are provided for low H2 purity. Detector fail alarm also provided as standard |
Primary Gas to be Measured |
N/A Carbon Dioxide (CO2) Hydrogen (H2) |
Industry Type |
N/A Power Industry |
Mounting Options |
N/A Panel Mount Rack Mount |
Models and Enclosure Options |
N/A NEMA 4 |
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