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Houston, TX USA

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GDS  GDS-68XP1/1-15-04/1-0-0

MONITORS / HYDROGEN SULFIDE IN NATURAL GAS
HYDROGEN SULFIDE


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GDS GDS-68XP1/1-15-04/1-0-0 (1)
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  • Specs
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GDS GDS-68XP Process Gas Monitor with Stainless Steel sensor head configured for Hydrogen Sulfide (H2S) with range 0-25 to 0-5000 ppm. Uses periodic sampling (from 3x per day to 12x per day) to extend sensor life and minimize discharge of sample gas. 4-20 mA output and Ethernet Modbus TCP interface. Optional 4x 5A SPDT alarm relays and dual MODBUS serial ports. Designed for installation in Class I, Div 1 Locations, explosion proof.

Part# with Options:        GDS-68XP1/1-15-04/1-0-0
Price with Options:        Please Email us your request for quote   

Options:    

Input Type
(1) Sample Draw Input Type for GDS GDS-68XP
Gas Range
(2) Gas Range for GDS (0-25 to 0-5000)
Output Options
(3) Output Options for GDS GDS-68XP
Enclosure Options
(4) Enclosure Options for GDS GDS-68XP
All enclosures include stainless steel bulkhead fittings as required.
Heater
(5) Heater for GDS GDS-68XP
Heater integration includes the correct alignment of the instrument inlet and outlet fittings with the bulkhead fittings that go on the enclosure itself, as well as the cost of the bulkhead fittings themselves, and the ˝” thick insulation that the factory installs on the sides and back of the enclosure if there is a heater. All that is included in the cost

  Availability 4 Weeks  ]

GDS-68XP Process Gas Monitor

The GDS-68XP H2S Monitor for Low Oxygen Applications uses sequencing technology to directly measure hydrogen, hydrogen sulfide, mercaptans or other gases in a stream that contains low levels of oxygen. By alternatively applying sample gas and clean purge air to the sensor, the GDS-68XP delivers longer sensor life and significantly reduces the amount of sample gas released to the atmosphere.

Today, most H2S measurements are monitored either by lead acetate tape analyzers or once-a-day colorimetric gas detector tubes. “Pull tubes” are easy to use, but require on-site personnel and can be notoriously inaccurate. In addition, one sample per day may not be sufficient to track changes in the levels of H2S or other gases brought on by variations in temperature or process. Tape units are more accurate, but require continuous maintenance and monthly tape replacement.

The GDS-68XP offers an alternative to expensive analyzers while providing up to 96 samples per day. Programmable sample and purge intervals allow the user to determine the optimum balance between sample rate, sensor life and sample gas released to ambient air.

The GDS-68XP contains a microprocessor controlled sequencer that manages the sample / purge cycle and maintains the sampled output during purge air operation. An integrated dual-channel GASMAX II gas monitor provides the sensor interface and signal conditioning, calibration, continuous reading display and optional alarm relays with MODBUS slave interface.

An internal real-time clock and event log time-stamps calibration and alarm events for later review, while the menu- driven operator interface eliminates all analog potentiometers and allows setup and calibration without hazardous area declassification.

The GDS-68XP can be configured for ‘draw from ambient’ or ‘positive pressure’ modes of operation. An integrated Run / Cal valve and user prompted calibration procedure make routine maintenance and field ‘bump tests’ quick and easy.

Reliability in Hostile Environments

Utilizing a long-life brushless DC pump, the GDS-68XP H2S Monitor is designed for installation in hazardous areas rated Class I, Div 1. For low temperature applications where highest accuracy and response are needed, an optional heater can be included if an enclosure is specified.

FEATURES

  • Designed for use in Class I, Div 1 Hazardous Locations
  • Periodic measurement on intervals from 5 minutes to six hours
  • Reliable electrochemical sensor technology for accurate readings
  • Automatic overrrange detection lenghtens sensor life
  • Built-in flow meter provides visual confirmation of sample flow rate
  • Prompted calibration procedure and cal port for easy maintenance
  • Accepts sample lines up to 100 ft in length
  • Optional 3x alarm relays and MODBUS slave interface
  • GASMAX auto-recognition of Smart Sensors
  • High quality diaphragm pump with 24VDC brushless motor
  • Calibration in hazardous area requires simple magnetic wand
  • Manufactured in USA
APPLICATIONS

  • Gas Pipeline Monitoring
  • Water / Wastewater Treatment
  • Custody Transfer Compliance
  • Scrubber Breakthrough
  • BioGas Digesters
Installed GDS-68 Methane stream monitor

Internal parts of a GDS-68 Methane stream monitor
GDS-68XP installation
Natural Gas Station with GDS-68XP Odorant Monitor

GDS-68XP sample sequencer
GDS-68XP sequence controller

GDS-68XP purge air inlet box
Purge Air Inlet Box

GDS-68XP SPECIFICATIONS
Power Input: 24VDC +/- 5% at < 10 watts.
Optional 110/220VAC power supply in separate enclosure.
Heater requires 110/220VAC at 200 watts max
Display Backlit 64 x 128 pixel LCD with 30-minute trend
Sensor Highly sensitive electrochemical sensor for Hydrogen, Hydrogen Sulfide, Mercaptans or THT.
Standard Output Standard 3-wire 4-20mA current source. Max loop R is 750 ohms with nominal 24VDC power supply.
Optional Output Three Form C Relays 5A @ 30VDC / 240VAC plus RS-485 2-wire MODBUS® slave interface.
Fault relay indicates sensor FAULT or LOW FLOW FAULT
Sample / Purge Pump Long life 1.6 diaphragm pump with brushless 24VDC motor.
Pull from vacuum up to 6” Hg (3 psig)
Sample Conditioning (Type 1 Draw ) For ambient pressure applications. Low pressure stainless steel coalescing filter with Pyrex bowl (max pressure 100 psig). Filter element PVDF fluorcarbon for removal of liquid aerosols, 99.99% removal of 0.1 micron particles.
Sample Conditioning (Type 3 Pressure ) High high pressure applications with low levels of entrained moisture. High pressure stainless steel regulator to 3000 psig inlet. Low side stainless steel coalescing filter with Pyrex bowl (max pressure 100 psig). Filter element PVDF fluorcarbon for removal of liquid aerosols, 99.99% removal of 0.1 micron particles.
Sample Conditioning (Type 4 Pressure ) High pressure applications with high levels of entrained moisture. High pressure stainless steel regulator to 3000 psig inlet. Low side stainless steel dual coalescing / membrane filter (max pressure 1500 psig). Coalescing filter element PVDF fluorcarbon for removal of liquid aerosols, 99.99% removal of 0.1 micron particles.
Sample Temp +5°C (+41°F) to +50°C (+122°F)
Operating Temp 0°C (-13°F) to +50°C (+122°F)
Construction XP enclosure: Cast aluminum.
GASMAX II: Aluminum housing with epoxy paint standard;
Exterior stainless steel tubing and fittings. Backplate epoxy painted steel
Dimensions (Plate only) 21” x 21” x 8”
11.3 Kg / 25 pounds
Dimensions (NEMA 4X) 24” x 24” x 8” Non-metallic or Stainless Steel Enclosure 20 Kg / 45 pounds
Inlet / Outlet 1/4” compression, stainless steel
Approvals Designed for use in Class I, Div 1 hazardous areas, Groups B, C, D. Suitable for Explosion-Proof installations
Warranty Electronics - 2 years from date of purchase
Sensor - 1 year from date of purchase. Note: Electrochemical sensor must be powered within three months of shipment or sensor life may be adversely affected.


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