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This system is used to insure that H2S levels in natural gas collection lines remains at acceptable levels to help guard against the corrosive effects of H2S on compressors, pipelines and process equipment. It is intended for continuous monitoring prior to the addition of odorants to the gas. The Sierra Monitor Model 4400 provides the user with a low-cost, easy-to-use solution to effective monitoring of natural gas streams. This system accurately measures H2S concentration in the 0-100 ppm range. Fast response of 90% of step change within 30 seconds enables the user to respond quickly to changes in natural gas supply conditions to prevent product contamination. There is minimal maintenance with the Model 4400 with no tapes to replace, no conditioning solutions, no mechanical stream blenders to calibrate. Calibration is easy with external application of span gas and simple one person adjustments. Calibration and swapping of the gas sensor is a quick and simple operation performed every two weeks. The 4400-10 receives a low pressure natural gas slipstream sample. A flow controller in the system delivers a constant flow to the gas sensor and allows for easy calibration and maintenance. An in-line coalescing filter protects the system from sample contaminants. A 4-20 mA linear signal proportional to sample concentration is provided from the sensor assembly. This signal can interface with a Sierra Monitor Model 4107-99 Transmitter/Display, a single channel controller, the Sentry multi-channel controller or most industry standard controllers or PLCs. The Model 5100-99-IT-AL Transmitter/Display option can accept the 4-20 mA signal from the Model 4400-10 and provide digital display of the H2S concentration, dual concentration alarm contacts, 4-20 mA output and serial MODBUS communication. The Model 5100-99-IT-AL can be mounted directly to the Model 4400 H2S Analyzer or at a remote location. The Model 5100-99-IT-AL is mounted in an explosion proof enclosure available in aluminum or stainless steel enclosures. Features Benefits ■ No tapes to replace or conditioning solutions Minimal maintenance, no hazardous material to dispose ■ Fast response Prevention of product contamination ■ Simple one-person adjustments Easy calibration, minimal service time Sierra Monitor Corporation 1991 Tarob Court Milpitas, CA 95035 USA (408) 262-6611 (800) 727-4377 Fax: (408) 262-9042 Model 4400 In-Stream Hydrogen Sulfide Analyzer Specifications: 4400 In-Stream Analyzer Power: Output: Environmental: Temperature Range Operating:: Storage: Humidity: Sensor: Range: Type: Life: Response: 24VDC 4-20 mA = 0-100 ppm H2S -20 to 50oC (-4 to 122oF) -40 to 50oC (-40 to 122oF) 0-95% RH (non-condensing) 0-100 ppm Hydrogen Sulfide Electrochemical Approximately 1 year in cycled service <30 seconds to 90% FS Mechanical: Area Classification Enclosure: Mounting: Connections: Div 1, Class 1, Groups B,C,D NEMA-1 with removable cover panel installs on 9” x 7” “H” Frame 3 position terminal strip with separate conduit Dimensions (WxHxD): 9.0 x 11.0 x 4.0 inches (22.9 x 27.9 x 10.2 cm) 5 lbs (2.2 Kg) Weight: Warranty: 5100-99-IT Transmitter/Display Power: 24VDC Operating Temperature Range: -40 to 50oC (-40 to 122oF) Display: Optional Alarms: Serial Output: Mechanical: Housing: Dimensions( WxHxD): Weight: Fixed and Scrolling LED Dual level alarms (8A) plus fault alarm (4A) Bi-directional RS-485 MODBUS® protocol Aluminum: Epoxy-coated, die-cast, copper-fire aluminum Stainless Steel: 316 Stainless Steel Aluminum: 6.0 x 4.4 x 4.9 in. 316 Stainless Steel: 5.9 x 4.8 x 4.9 in. Aluminum: 2.7 lbs (1.3 Kg) 316 Stainless Steel: 5.4 lbs (2.6 Kg) 2 years as non non-consumable items Ordering Information: 4400-10 5100-99-IT-AL 5100-99-IT-SS In-Stream Hydrogen Sulfide Monitor Single Point Explosion Proof Transmitter/Display - Aluminum Single Point Explosion Proof Transmitter/Display - Stainless Steel ISO 9001 REGISTERED QUALITY SYSTEM Sierra Monitor Corporation 1991 Tarob Ct. Milpitas, CA 95035 (408) 262-6611 800-727-4377 FAX: (408) 262-9042 Visit our Web site at: E-Mail: sales@sierramonitor.com © 2009 by Sierra Monitor Corporation...