The Model T100U Trace-level SO2 analyzer has been developed specifically to address the challenges of low level monitoring as required, for example, in the US NCore network. It uses the proven UV fluorescence principle, and is designed to allow ultra-sensitive sulfur dioxide measurements while still meeting the requirements for use as a US EPA compliance analyzer.

• UV fluorescence technology for trace-level SO₂ measurement
• Selectable dual ranges from 0-5 ppb to 0-20,000 ppb full scale
• Lower detectable limit of 50 ppt with high sensitivity and wide dynamic range
• NumaView™ premium T Series software with large, vivid color touchscreen display
• Ethernet, RS232, RS485, and USB communications for remote operation and integration
• US EPA equivalent method designated for ambient air quality monitoring

General

Parameter	Specification
Ranges	Min: 0-5 ppb full scale Max: 0-20,000 ppb full scale (selectable, dual ranges)
Measurement Units	ppb, ppm, µg/m3, mg/m3 (selectable)
Zero Noise	25 ppt (RMS)
Span Noise	0.5% of reading (RMS) above 5 ppb
Lower Detectable Limit	50 ppt
Zero Drift	< 0.2 ppb/24 hours
Span Drift	< 0.5% of full scale/24 hours
Lag Time	30 seconds
Rise/Fall Time	< 140 seconds to 95%
Linearity	1% of full scale
Precision	0.5% of reading
Sample Flow Rate	650 cm3/min ±10%

Electrical Specifications

Parameter	Specification
Power Requirements	100V-120V, 220V-240V, 50/60 Hz
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 Equivalency)
Dimensions (HxWxD)	7" x 17" x 23.5" (178 x 432 x 597 mm)
Weight	45 lbs (20.5 kg)

Certifications

Parameter	Specification
Certifications	US EPA: EQSA-0495-100

T100U Specifications  Download