TS Total Sulfur , Model 108E

Total Sulfur Analyzer

The TAPI Model 108E is designed to measure mixed sulfur impurities, collectively referred to as Total Sulfides (TS), in air or carbon dioxide (CO₂) gas. Since there is no SO₂ scrubber in the system, the instrument reading is the sum of the oxidized sulfur compounds and SO₂.

The Model 108E consists of a modified M100E UV Fluorescence SO₂ Analyzer, with special software and a M501TS high temperature thermal oxidizer. Sulfur compounds are heated as they pass through the converter and are oxidized into SO₂.

When analyzing CO₂, which generally contains no oxygen, there is an assembly to add air, giving approximately 6% oxygen to the sample before it passes through the converter. This dilution of the sample gas is corrected in the calibration procedure. The added oxygen allows the sulfur compounds to be oxidized to SO₂ making the M108E respond to the total number of sulfur molecules in the sample gas. SO₂ is unaffected by the converter.

The M108E uses the proven UV fluorescence principle, coupled with state of the art microprocessor technology to provide accurate and dependable low level measurements of TS. Exceptional stability is achieved with the use of an optical shutter to compensate for PMT drift and a reference detector to correct for changes in UV lamp intensity.

A hydrocarbon “kicker” and advanced optical design combine to prevent inaccuracies due to interferents. The multi-tasking software gives real time indication of operational parameters and provides automatic alarms if diagnostic limits are exceeded.

Features

Standard two year warranty
0-50 ppb to 20,000 ppb ranges as SO₂, user selectable
Microprocessor controlled for versatility
Multi-tasking software allows viewing of test variables during operation
Auto Ranging, Dual Range and remote range selection
Continuous self checking with alarms
Dual Bi-directional RS232 ports for remote operation (optional
5 or Ethernet)
Digital Status outputs provide instrument operating condition
Internal Data logging with 1 min to 365 day multiple averages
Continuous Automatic Zero correction
Adaptive signal filtering optimizes response time
Temperature & pressure compensation
Critical orifices provide flow stability
APIcom remote operation software

Specifications
Ranges:	0-50 ppb to 0-20,000 ppb full range as SO₂, user selectable; Dual ranges and auto ranging supported
Units:	ppb, ppm, µg/m³, mg/m³
Zero noise:	< 0.2 ppb (RMS)
Span noise:	< 0.5% of reading (RMS) above 50 ppb
Lower Detectable Limit (LDL):	0.4 ppb
Zero Drift:	< 0.5 ppb/24 hours, 1 ppb/7 days
Span Drift:	< 0.5% of reading/24 hours, 1% reading/7 days
Lag time:	20 seconds
Rise and Fall Time:	< 120 seconds to 95%
Linearity:	1% of full scale
Precision:	0.5% of reading
Sample Flow Rate:	650 cc/min ±10%
Operating Temperature Range:	5 - 40°C
Minimum Conversion Efficiency:	H₂S: 98%, COS: 90%, CS₂: 90%
Dimensions (HxWxD):	7” (178 mm) x 17” (432 mm) x 23.5” (597 mm) each for analyzer and converter
Weight:	Analyzer – 39 lbs (17.4 kg)
Power:	100V-120V, 220V-240V, 50/60Hz, 440 Watts (analyzer and converter)
Analog Outputs:	10V, 5V, 1V, 0.1V, selectable
Recorder Offset:	±10%
Serial Outputs:	Serial Port 1: RS-232, DB-9M
Status (Digital):	8 outputs, 6 inputs (opto-isolated), 4 alarm outputs (optional)
Current Output:	Optional 4-20mA, select up to three channels
Approvals:	CE

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