Katalog Produk

Keterangan

The Nova Model 436PMN7 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.

Specifications
Method of Detection Temperature controlled thermal conductivity ( T/ C) cell, cannot be burned out due to loss of flow or changing gases
Ranges Available
Range 1 : 0-100% H2 in Air
Range 2 : 0-100% H2 in CO2
Range 3 : 0-100% Air in CO2
Resolution ± 0.1% of gas measured
Accuracy & Repeatability
± 1% F.S except in 85-100% H2 in Air range which is within 0.2% absolute H2
Drift 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)
10-15 seconds to 90% step change - not including sample transport time
Ambient Temperature Range
0 to 49 º C - 32 to 122 º F
Linearity ± 0.4% of F.S. on H2 in Air range, ± 1% of F.S. in H2 or Air in CO2 ranges
Size & Weight Dimensions will vary depending on enclosure style and options required
Power
115 VAC, 60 Hz - 220 VAC, 50 Hz
Output Options 4-20 mA into 500 ohms non-isolated standard
Isolated 4-20 mA, RS232, RS485, MODBUS, Ethernet outputs
Alarms
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
Carbon Dioxide ( CO2)
Hydrogen ( H2)
Industry Type Power Industry
Mounting Options Panel Mount, Rack Mount
Models and Enclosure Options NEMA 4

Applications
For continuous analysis of hydrogen ( H2) purity and for purge monitoring of hydrogen-cooled generators and synchronous converters.

Features
One analyzer monitors all 3 gases for purity ( Range 1) or purging ( Ranges 2 and 3) :
Range 1 : 0-100% H2 in Air
Range 2 : 0-100% H2 in CO2
Range 3 : 0-100% Air in CO2
Best value continuous tri-gas analyzer
Bright digital readout, 4-20 mA Outputs
Long life electrochemical thermal conductivity cell with high accuracy and repeatability, cannot be burned out.
Explosion proof gas detector enclosure suitable for Class 1 Division 1 Group BCD rated areas, UL/ FM/ CSA certified
Fast response ( T90 -10 to 15 secs)
Easy to maintain modular layout
Built in pressure regulator

Options
Isolated analog, RS232, RS485, MODBUS and Ethernet output available options.
Auto calibration option which includes the following features :
Touch-screen display for easy entry of calibration gas settings, alarm set points, and calibration frequency
One-touch ' cal-now' button ( magnetic switch in explosion proof control cabinet) permits easy, and complete calibration without needing to open cabinet cover

Calibration
Channel 1 - Air for Zero, 100% H2 for Span
Channel 2 - 100% CO2 for Zero, 100% H2 for Span
Channel 3 - 100% CO2 for Zero, Air for Span