Measuring Principle
TDLAS
Product Description
An economical gas analyzer system for moisture (H2O) in the natural gas industry. The sensor measures gas using tunable diode laser absorption spectroscopy (TDLAS) to determine the concentration without physical contact with the gas stream. Option for simplified sample conditioning to reduce the complexity of the analyzer system.
Channels
1
Analytes and Measurement Ranges
H2O (moisture):
Minimum: 5 to 422 ppmv
Maximum: 5 to 2110 ppmv
Measured Variables
Concentration
Dew Point
Cell Pressure
Cell Temperature
Ambient Temperature Range
-20 to 50°C (-4 to 122°F)
Operating Pressure Range
Inlet Pressure: 140 to 350 kPa (20 to 50 psig)
Sample Cell: 700 to 1400 mbara
Analyzer Wetted Materials
316L stainless steel
FKM O-rings
Glass
Power Supply
100 to 240 VAC, 50 to 60 Hz
or
9 to 16 VDC or 18 to 32 VDC – optional
Maximum 1 Amp at 120 VAC
1.6 Amps at 24 VDC, 3.2 Amps at 12 VDC
Communication
Analog output: 1 or 2 x 4-20 mA isolated, 1200 ohms at 24 VDC max load
Serial: RS232C
Protocol: Modbus Gould RTU, Daniel RTU or ASCII
Alarms: 2, general fault and concentration alarms via Modbus and analog output(s)
Housing Materials
Electronics: 304 stainless steel (Class I Division 2)
Sample system panel: anodized aluminum
Hazardous Area Approvals
CSA Class I, Division 2
CSA Class I, Zone 2
Degree of Protection
Type 3R (Class I Division 2)