Model T200P
with NumaView™ Software

Photolytic True NO2/NO/NOx Analyzer




  • Ranges: 0-50 ppb to 0-4,000 ppb, user selectable
  • High efficiency photolytic converter with specific conversion of NO2
  • Ethernet, RS-232, and (optional) USB com ports
  • Front panel USB connections for peripheral devices and firmware upgrades
  • 8 analog inputs (optional)
  • 0.40 ppb lower detectable limit
  • Catalytic ozone scrubber
  • Comprehensive internal data logging with programmable averaging periods
  • Ability to log virtually any operating parameter
  • Two-year warranty


​The following table provides a list of items that  need regular maintenance to ensure your roduct remains in good working condition.


Dashboard functionsReview and evaluateWeeklyNo
Particulate filterChange particle filterMonthly or as necessaryNo
Zero/span checkEvaluate offset and slopeWeeklyNo
Zero/span calibrationZero and span calibrationEvery 3 monthsYes
External zero air scrubber optionExchange chemicalEvery 3 monthsNo
Software/FirmwareCheck for updatesEvery 6 months or whenever servicedNo
Ozone cleanserChange chemicalAnnuallyYes
Reaction cell window (“optical filter”)CleanAnnually or as necessaryYes
DFU filtersChangeAnnually (or as needed for highly polluted sample air)No
Pneumatic sub-systemCheck for leaks in gas flow pathsAnnually or after repairs involving pneumaticsYes if a leak is repaired
Reaction cell O-rings & sintered filtersReplaceAnnuallyYes 
PMT Sensor Hardware CalibrationLow-level hardware calibrationOn PMT/ preamp changes or if slope is outside of 1.0±0.3Yes
PumpRebuild headwhen Rx Cell pressure exceeds 10 in-Hg-A (at sea level)Yes
Inline Exhaust ScrubberReplaceAnnuallyNo
NO2 converterClean or Replace LampsWhen CE value drops suddenlyYes 
Desiccant  bagsReplaceAny time PMT housing is opened for maintenancen/a



ESD Fundamentals - 04786.pdfFundamentals of Electro-Static Discharge (ESD)216 KB
External Pump Pack Manual - 07900.pdfExternal Pump Pack Manual351 KB
NVS Remote Manual - 08492.pdfNumaView™ Software Remote User Guide867 KB
SAL000076H - Environmental Instruments Overview.pdfEnvironmental Instruments Overview614 KB
SAL000092G - T200P.pdfT200P Specification780 KB
SAL000092G-CN T200P.pdfT200P规格 (Chinese Specification)1346 KB
T SERIES_6PG.BROCHURE_2018_web.pdfT Series with NumaView™ Software Brochure9567 KB
T200P T200UP Manual - 083730229.pdfT200P/T200UP with NumaView™ Software Manual10517 KB
T200PManual.pdfT200P Manual8011 KB


Min: 0 - 50 ppb full scale for NO and NO2
Max: 0 - 4,000 ppb full scale for NO2;
0-20,000 ppb full scale for NO
(selectable, dual-range supported)
Measurement Units ppb, ppm, μg/m3, mg/m3 (selectable)
Zero Noise < 0.1 ppb (RMS)
Span Noise < 0.2% of reading (RMS) above 50 ppb
Lower Detectable Limit < 0.2 ppb
Zero Drift < 0.5 ppb/24 hours
Span Drift < 0.5% of full scale/24 hours
Response Time < 80 seconds to 95%
1% of full scale
Precision 0.5% of reading above 50 ppb
Sample Flow Rate 500 cc/min ±10%
Power Requirements 100V-120V, 220V-240V, 50/60 Hz, Typical power 160W
Analog Output Ranges 10V, 5V, 1V, 0.1V (selectable)
Recorder Offset ±10%
Included I/O 1 x Ethernet: 10/100Base-T
2 x RS232 (300-115,200 baud)
2 x USB device ports
8 x opto-isolated digital outputs
6 x opto-isolated digital inputs
4 x analog outputs
Optional I/O 1 x USB com port
1 x RS485
4 x digital alarm outputs
Multidrop RS232
3 x 4-20mA current outputs
Operating Temperature Range 5 - 40ºC
Dimensions (HxWxD) 7” x 17” x 23.5” (178 x 432 x 597 mm)
Analyzer: 40 lbs (18 kg)
External pump: 22 lbs (10 kg) ​

Specifications are subject to change without notice.
All specifications are based on constant conditions.​

​US EPA: EQNA-1016-241
EU: EN14211 TÜV Rheinland
QAL1 Certified: EN15267





The Model T200P provides measurements of NO and NO2 using our Model T200 NOx analyzer combined with a patented high efficiency photolytic converter. Even low temperature molybdenum converters transform other nitrogen-containing compounds such as HNO3, PAN, etc. to a considerable extent. Simultaneous measurements of NO2 performed with molybdenum and photolytic converters have shown significantly different results in the presence of such compounds.

In the photolytic process the sample gas passes through a cell where it is exposed to light at a specific wavelength from an LED array. This causes the NO2 to be selectively converted to NO with negligible interference from other gases. Advances in the photolytic converter technology now yields NO2 conversion efficiency that is similar to molybdenum under typical ambient NO2 concentrations, but without the same interferences.

All T Series instruments offer an advanced color display, capacitive touch screen, intuitive user interface, flexible I/0, and built-in data acquisition capability. All instrument set up, control and access to stored data and diagnostic information is available through the front panel, or via RS232, Ethernet, or USB com ports, either locally or by remote connection.

The Model T200P comes with NumaView™ Software. NumaView™ Remote PC Software allows for a remote connection with virtual interface and data downloading capability to analyzers operating NumaView™ Software. ​