The Model N901 is a near-continuous hydrocarbon gas analyzer that measures the concentration of Methane (CH4) and Total Hydrocarbons (THC) in air. The concentration of the non-Methane (NMHC) component is calculated by the subtraction of CH4 from THC, with high sensitivity and accuracy. The hydrocarbons are measured using a Flame Ionization Detector (FID), in combination with gas chromatography (GC). The instruments range and performance are tuned specifically for use in ambient air quality monitoring assessments.
The Model N901 is designed for simple operation and maintenance with a modular hardware and electronics architecture. A long-life stainless-steel fritted filter is used at the sample intake to effectively remove particulate matter without introducing any gas-phase measurement artifacts. Instrument operation, calibration functions, chromatogram views, and data handling are all automated and controlled using the internal NumaView™ Software (NVS) interface, without the need for an external PC.
For remote connection to the N901 instrument, Teledyne API’s NumaView™ Remote PC-based Software provides a virtual interface, instrument controls, and data downloading capability to all TAPI analyzers operating NumaView™ Software.
|Detector||Flame Ionization Detector (FID)|
|Method||Gas Chromatography with CH4 separation column|
|Ranges (Methane)||Min: 0-5 ppm
Max: 0-1,000 ppm
|Lower Detectable Limit||<25 ppb (Methane); <25 ppb (Propane)|
|Cycle Time||60 sec (minimum), user-definable|
|Precision||<1% of reading or 0.05 ppm (whichever is greater)|
|Linearity||<1% of full scale|
|Zero Drift||Zero baseline performed once per cycle|
|Span Drift (24hr)||<1% of full scale|
|Sample Flow Rate||60 cc/min + 10%|
|Carrier Gas||50 to 70 psi, N2 UHP Grade, Consumption 20 cc/min|
|Fuel Gas||50 psi ± 5%, H2 UHP Grade, Consumption 35 cc/min|
|FID Air||50 psi ± 5%, HC Free clean air, Consumption 350 cc/min|
|Auxiliary Air||70 psi ± 5%, Clean Dry Air, Consumption 1 cc/actuation|
|Included I/O||1 x Ethernet (TCP/IP)
1 x RS232
2 x front panel USB device ports
|Optional I/O||Universal Analog Output Board includes (all user-definable):
4 x Isolated Voltage Outputs (5V, 10V; user-selectable)
3 x Individually Isolated Current Outputs (4-20mA)
Digital I/O Expansion Board includes:
3 x Isolated Digital Input Controls
5 x Isolated Digital Output Controls (user-definable)
3 x Form C Relay Alarm Outputs (user-definable)
|Dimensions (HxWxD)||7” x 17” x 23.5” (178 x 432 x 597 mm)|
|Weight||35 lbs (16 kg)|
|Power||100-240V, 50/60Hz, Typical Power 130W|
Hi there, I'm Paul. I started Thomson Environmental Systems over 21 years ago and am still the Managing Director. I look after our excellent customer service team and our VIC, NZ and overseas customers. If there's something I can help you with, please call me at the Sydney office on 02 9526 8199 or send me a message and myself or your local sales support will be in touch shortly!