AMETEK PI - Model WR-888 -Sulfur Recovery Tail Gas Analyzer

There are two configurations of the 888 available for sulfur recovery measurements. The original 888 is compact and rugged, and mounts directly on to the process pipe, eliminating the complexity and safety issues of fiber-optic coupled photometers. The 888L is suitable for end users or end use locations that require the analyzer electronics and interface be located away from the sampling location. The 888L electronics and measurement enclosures can be mounted inside a shelter or at a location other than on the process pipe, and it includes a remote demister probe that is installed at the sample tap, and heated sample lines that transport the process sample gas to and from the measurement enclosure.

Designed specifically for monitoring H₂S and SO₂ in sulfur recovery tail gas, the 888 analyzers are built on more than 40 years of field-proven application experience, and provide an ideal solution for the hydrocarbon processing industry.

HIGH-LEVEL RELIABILITY
Automatic flow control allows a proactive response to adverse process conditions. The flange temperature alarm provides an early warning of poor-quality steam. An extended ambient temperature range enables problem-free operation up to 60^oC (140^oF).

RANGE OF SAFETY FEATURES
The 888 analyzers include many features to enhance technician safety in hazardous locations. They offer a close-coupled, easily accessible, process-isolated demister, and complete isolation from the process with double-block valves. A remote PC web-enabled interface is available.

EASY MAINTENANCE AND SERVICE
Smart diagnostic models identify, communicate and react to potential problems. In addition, a 2x over-range measurement allows the operator to make an informed response to process upsets.

The 888 and 888L are our reliable, trusted UV spectroscopy solutions for sulfur recovery tail gas analysis – Find out more.

• Auto-flow control
• No shelter required, IP65/NEMA 4 rated
• Safe process isolation during service
• Lamp life measured in years, not months

• 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
• 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.)

Approvals and Certifications (Pending)

• UL/CSA General Safety Requirements
• UL/CSA Class I, Division 2, Groups A, B, C and D
• ATEX II 2 G, Ex px IIC T3 Gb T
• Complies with all relevant European directives
• JIS (Japan)
• GOST (Russia)