N901

Hydrocarbon Instruments

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Currently experiencing very long- and uncertain lead times for all N901 components, please consult factory.

Model N901
THC-CH₄-NMHC Analyzer
with NumaView™ Software

Downloads

Type	Title	File Size
	N901 with NumaView™ Software Manual	7281 KB
	NumaView™ Software Remote User Guide	867 KB
	Environmental Instruments Overview	610 KB
	N901 Specifications	793 KB
	N Series Instruments for Ambient Air Monitoring Brochure	11385 KB
	N Series Instruments for Continuous Emissions Monitoring (CEM) Brochure	11049 KB

Applications

Specifications


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)
Operating Temperature	5-40°C
Power	100-240V, 50/60Hz, Typical Power 130W
Warranty	Two years
Specifications subject to change without notice. All specifications are based on constant conditions.

Features

60s default cycle time
25 ppb LDL (CH₄, NMHC)
Fully programmable and automated directly from the instrument front panel interface
Modular internal hardware design for ease of maintenance
All internal components operate on 24VDC
Front panel USB connections for peripheral devices and firmware upgrades
Real-time chromatogram display during calibration routine
Real-time graphical displays of concentrations and diagnostic parameters
Comprehensive internal datalogging with programmable averaging periods
Ethernet and Serial outputs, standard
Analog output and digital I/O expansion (options)
Internal pressurized span valve for auto calibration (option)

Description

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.

Who We Are

Teledyne API, a business unit of Teledyne Technologies Incorporated (NYSE:TDY), is a global market leader in air quality and process gas monitoring instrumentation headquartered in San Diego, California, USA.