900 Tail Gas-Air Demand Analyzer

Features

In the past, conventional Claus Sulfur recovery processes were adequately controlled on the basis of ratio or excess process air. The development of new and modified sulfur recovery processes has dramatically changed the analytical requirements placed on the tail gas analyzer. These applications require accurate chemical concentration data over wide dynamic ranges. Selective oxidation processes may require the analyzer to control the H2S/SO2 ratio at values ranging from 1:7 to greater than 10:1. In addition there is an increased need to provide reliable process data during upset conditions to endure correct response to such conditions.

Industrial

Oil & Gas
Chemical & Petrochemical

Description

Specifications

Methodology: Multiple wavelength, high resolution, nondispersive UV
Species Measured	Minimum Full Scale	Maximum Full Scale
H₂S	5000 ppm	10%
SO₂	2500 ppm	10%
CS₂	5000 ppm	10%
COS	5000 ppm	10%
Accuracy¹	Better than 1% full scale
Repeatability¹	Better than 0.5% full scale
Linearity¹	Better than 1% full scale
Response Time	Typically less than 30s to T90 (excluding sample system)
Number of Gases	Up to 5 simultaneously (refer to AMETEK for possible combinations)
Sample Transport	Air aspiration
Typical Sample Flow	3 to 5 L/min (0.1 to 0.2 CFM)
Temperature Control	Independent control of four zones (oven, sample line, probe, vent line)
Ambient Temperature	5° to 50°C (41° to 122°F)
Instrument Air	Minimum 413.6KPa (60 psig), 120 L/min (4.24 CFM), instrument quality air
Power	120 VAC ±10%, 47-63 Hz or 240 ±10%, 47-63 Hz; 600 W for analyzer only excluding sample and vent line and ASR probe
Analog Outputs	4 to 20 mA self-powered (optional loop-powered), maximum of 4
Communications	RS422 with Modbus protocol
	RS485 optional
	Ethernet optional
	Relays 3 independent sets of SPDT relays alarm conditions
Physical Dimensions	1553.6 x 1117.6 x 306 mm (61.17 x 44 x 12 in.)
Weight	Estimated minimum 160 kg (350 lbs)
Approvals and Certifications	NEC/CEC Class I, Division 2, Groups C & D
	ATEX II 2G EEx pd IIB T3
	Russian Ex Proof Certification; 1ExpydIIBT3
	Russian Gosstandart Pattern Approval
	Complies with all relevant European Directives

900 Tail Gas-Air Demand Analyzer