888 Sulfur Recovery Tail Gas Analyzer

Features

AMETEK Process Instruments has been the leader in tail gas analysis for over 40 years-with more than 1,100 installed 880 NSL analyzers and more than 100 million hours of run time. The 888, the successor of the 880 NSL uses field-proven and highly reliable UV technology to accurately monitor the H2S and SO2 concentrations in sulfur recovery tail gas. This compact, rugged analyzer mounts directly on the process pipe, eliminating the complexity and safety issues of fiber optic coupled photometers.
The 888 is the evolution of a well proven formula. All the best elements of the iconic 880 NSL are still there; Four year lamp life, no shelter required and steam blow back for ammonia salts. Building on this success the 888 offers improvements in a number of key areas.

Industrial

Oil & Gas
Chemical & Petrochemical
Power Plant

Description

Specifications

Methodology	Non-dispersive ultraviolet
Measurement Range	0 to 1% SO₂, 0 to 2% H₂S, Air Demand, excess H₂S or excess SO₂ (as control outputs)
Accuracy	H₂S and SO₂: ±1% of full scale
Reproducibility	±1% of full scale
Speed of Response	90% in less than 15 seconds, typical
Sample Flow	2 LPM typical
Ambient Temperature	-20ºC to 60ºC (-4ºF to 140ºF)
Electrical	120/240 VAC 50/60 Hz 500W, single phase
Instrument Air	379 to 690 kPa (55 to 100 psig )
Steam Pressure	515 to 690 kPa (75 to 100 psig) for optional jacketed ball valve and optional blow back for ammonia salts
Outputs	Four (4) 4-to-20 mA, self-powered, linear, 1000 ohms load proportional to H₂S, SO₂, and either Excess H₂S or Ratio
	Four (4) programmable relay contacts (30 VAC, 60 VDC, 50 VA, resistive load)
	RS485 Serial Communication Port, two-wire
Inputs	One (1) isolated digital input, contact closure, 5 VDC @ 2.5 mA
Inputs	Note: Provide isolated contact closure only. Do not apply voltage.
Communication	RS485 serial port, Ethernet, Modbus. Remote dial-in capabilities available with AMETEK web enabled software
Noise	±0.5% full scale
Calibration	Automatic multi-point photo span validation
Process Sample Pressure	Not critical
Customer-Supplied Items	2 in.-150 lbs. or DIN equivalent RF stainless steel flange connection
Enclosure Material	316 stainless steel
Approvals and Certifications	UL/CSA General Safety Requirements
	UL/CSA Class I, Division 2, Groups A, B, C, D
	ATEX II 2 G, Ex px IIC T3 Gb T
	Complies with all relevant European directives
	JIS (Japan)
	GOST (Russia)
Physical Dimensions	(H x W x D): 874 x 1092 x 304.9 mm (34.4 x 43 x 12 inch)
Approximate Weight	110 kg (242.5 lbs.)

888 Sulfur Recovery Tail Gas Analyzer