Dual-Beam NDIR Technology
The Model M90XP and M90XP-ppm are designed to monitor ppm and percent level CO2 concentrations in natural gas and biogas applications. An infrared, dual-beam technology is incorporated into the design of the instrument. The M90XP and M90XP-ppm can be included as an additional measurement with other Envent analyzers, or can be offered as a stand-alone analyzer with an integrated sample conditioning system.
|Electrical classification||Class I, Div1 Groups B, C & D|
|Operating Principle||Dual-beam, non-dispersive infrared (NDIR).|
|Detector||Sapphire window with glass frit seal|
|Sensing Cell Proof Pressure (Sample cell only)||2 PSI (13.8 KPa) gauge pressure|
|Measurement Range||0-5000ppm; 0–20% or 0-100% CO2; Custom ranges available|
|Repeatability||± 0.1 % CO2|
|Drift||Less than 2.5% of reading/year|
|Accuracy||± 3% of reading or 0.1% CO2 at cal temperature,
± 5% of reading or 0.1% CO2 over full operating temperature range.
|Warm U Time||Less than 5 minutes|
|Operating Humidity||Sensing Cell: 0–100% RH (non-condensing).
Electronics: 0 – 90% RH (non-condensing).
|Storage Temperature||-20 to 60°C (-4 to 140°F).|
|Storage Humidity||0–90% RH (non condensing).|
|Analog Output||Isolated 4–20 mA|
|Digital Interface||RS-485 & RS-232|
|Operating Power||24 VDC at 2 Watts standard.
12 VDC, 120/240 VAC optional
|Source Life||10 years minimum|
|Alarm Outputs||2 solid state drivers 2 Amp, 30 VDC maximum|
|Standard Sample System||Inlet filter (1500psig/103bar max).
SS single stage regulator (3000psig/207bar max).
Flow meter (100psig/6.9bar max).