Ametek 888-Sulfur Recovery Tail Gas Analyzer

General Details

Model 888-Sulfur Recovery Tail Gas Analyzer

AMETEK Process Instruments has been the leader in tail gas analysis for over 40 years-with more than 1,100 installed model 880 NSL analyzers and more than 100 million hours of run time. The Model 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 Model 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 Model 888 offers improvements in a number of key areas.

AMETEK’s third generation tail gas analyzer the Model 888 takes reliability to the next level by providing solutions to the three most common external failure modes

  • Automatic flow control for proactive response to adverse process conditions
  • Flange temperature alarm for early warning of poor quality steam
  • Extended ambient temperature range to 60°C

Hazardous operation improvements, with the analyzer technician in mind

  • Close coupled, easily accessible but process isolated demister
  • Complete isolation from the process with double block valves
  • Remote PC Web enabled interface

We listened to customer feedback from operations, analyzer technicians and process engineers

  • Smart diagnostic models identify, communicate, and react to potential problems
  • 2X over range measurement allows an informed response to process upsets
  • Worldwide factory support in over 50 countries
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)