The T500U - NO2 Analyzer represents the next generation of criteria pollutant monitoring technology for the direct measurement of Nitrogen Dioxide (NO2) in air.

• Cavity Attenuated Phase Shift (CAPS) spectroscopy for direct, real-time NO₂ measurement
• Selectable ranges from 0-5 ppb to 0-1 ppm with lower detectable limit < 40 ppt
• Selectable measurement units: ppb, ppm, µg/m³, mg/m³
• Large, vivid, and durable color touchscreen display with NumaView™ premium T Series software
• Ethernet, RS232, RS485, and USB communications with extensive digital and analog I/O
• US EPA Federal Equivalent Method and EU EN14211 TÜV Rheinland certified

General

Parameter	Specification
Ranges	0 - 5 ppb to 0 - 1 ppm NO2
Measurement Units	ppb, ppm, µg/m3, mg/m3 (selectable)
Zero Noise	< 20 ppt (RMS)
Span Noise	< 0.2% of reading (RMS) + 20 ppt
Lower Detectable Limit	< 40 ppt
Zero Drift	< 0.1 ppb / 24 hours
Span Drift	< 0.5% of reading / 24 hours
Rise/Fall Time	< 30 seconds to 95%
Linearity	< 1% of full scale
Precision	0.5% of reading above 5 ppb
Sample Flow Rate	900 cm3/min ±10%

Electrical Specifications

Parameter	Specification
Power Requirements	80W; 100-250VAC (50-60Hz)
Analog Output Ranges	10V, 5V, 1V, 0.1V (selectable)
Recorder Offset	±10%

Communication Specifications

Parameter	Specification
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 8 x analog inputs (0-10V, 12-bit) 4 x digital alarm outputs Multidrop RS232 3 x 4 - 20mA current outputs

Physical Specifications

Parameter	Specification
Operating Temperature Range	5 - 40°C (with US EPA Approval)
Dimensions (HxWxD)	7" x 17" x 23.5" (178 x 432 x 597 mm)
Weight	33 lbs (15kg)

Certifications

Parameter	Specification
Certifications	US EPA: Federal Equivalent Method (EQNA-0514-212) EU: EN14211 TÜV Rheinland QAL1 Certified: EN15267 MCerts: Sira MC160304/00

T500U Specifications  Download