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ARJAY ENGINEERING EC-Gold User Manual

Gas concentration transmitter
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EC-Gold
Gas Concentration Transmitter
User Manual
Technical Support
Continental North America Toll Free 1-(800) 387-9487
Ph: +1 (905) 829-2418 Fx: +1 (905) 829-4701
A Product of Arjay Engineering Ltd.
Oakville, Ontario, Canada
www.ArjayEng.com
www.EnmetGasDetection.com

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Summary of Contents for ARJAY ENGINEERING EC-Gold

  • Page 1 EC-Gold Gas Concentration Transmitter User Manual Technical Support Continental North America Toll Free 1-(800) 387-9487 Ph: +1 (905) 829-2418 Fx: +1 (905) 829-4701 A Product of Arjay Engineering Ltd. Oakville, Ontario, Canada www.ArjayEng.com www.EnmetGasDetection.com...
  • Page 2 (behind shield) The EC-GOLD may by used as a stand-alone 4-20 mA (or 2-10 vdc) transmitter for use with alarm panels or building automation systems. An optional SPST DC voltage to ground contact is available for activation of remote controls and relays. The EC-Gold can be used in conjunction...

  • Page 3: Table Of Contents

    ECGOLDUM17.DOC Rev: 1.7 Model: EC-GOLD TABLE OF CONTENTS INSTRUMENT OVERVIEW ....................3 FEATURES ......................3 DESCRIPTION....................3 SPECIFICATIONS .....................4 SPECIFICATIONS .....................5 INSTALLATION.......................6 MECHANICAL INSTALLATION.................6 ELECTRICAL INSTALLATION ................7 STARTUP AND CONFIGURATION ................9 NOTES ON THE USER INTERFACE OPTIONS ..........9 STARTUP ......................9 USING THE DIP SWITCH FOR SETUP AND CALIBRATION......10 3.3.1...

  • Page 4: Instrument Overview

    • User specified custom features may be added by contacting Arjay Engineering Ltd. DESCRIPTION The EC-Gold transmitter may be used to sense a large variety of gases including CO, NO , Ammonia, Chlorine, and Hydrogen Sulfide (H The Carbon Monoxide sensor offers a unique self-test feature, which may be activated either via the onboard Push To Test pushbutton, or remotely via the Arjay/Enmet Central Access Panel.
  • Page 5 Vents Calibration / Config Push to test pushbutton (from bottom) pushbutton (from bottom) Sensor access for calibration Depending on sensor, access is either from bottom or front. EC-GOLD 4-20mA / DC VOLTAGE OUTPUT APPLICATION BLOCK.DSF TYPICAL APPLICATIONS - 4 -...

  • Page 6: Specifications

    SPECIFICATIONS OPERATION The EC-Gold is a single channel gas concentration transmitter. A variety of gases may be sensed when fitted with the appropriate sensor. The output may be field selected to be one of two types: Analog 4-20mA / 2- 10V, or Arjay’s RLU Discrete Voltage Output which is used in grouped or...

  • Page 7: Installation

    FRONT COVER MECHINST.DSF Figure 2.0 Locate the EC-Gold on a vertical surface away from drafts, open doors or windows, condensation or dripping moisture. The vertical placement (above the floor) depends on the gas being monitored. For CO, the unit should be located within the breathing zone: about 4 - 5 feet above the finished floor*.

  • Page 8: Electrical Installation

    ECGOLDUM17.DOC Rev: 1.7 Model: EC-GOLD ELECTRICAL INSTALLATION ELECTRICAL INSTALLATION RS-485 NETWORK +24VDC Use good installation practice! Do not run high voltage cables in the same conduit as signal wires. For Networked applications, the 2 wire RS-485 network connects to the Enmet Central Access Panel.
  • Page 9 ECGOLDUM17.DOC Rev: 1.7 Model: EC-GOLD ELECTRICAL INSTALLATION RS-485 NETWORK +24VDC Use good installation practice! Do not run high voltage cables in the same conduit as signal wires. For Networked applications, the 2 wire RS-485 network connects to the Enmet Central Access Panel.

  • Page 10: Startup And Configuration

    The EC-Gold may be configured and calibrated using either of 2 methods: 1. Using the integral DIP switch and Calibration pushbutton. The EC-Gold front cover must be removed to access the DIP switch. For calibration only, the pushbutton is accessible without removing the front cover.

  • Page 11: Using The Dip Switch For Setup And Calibration

    ECGOLDUM17.DOC Rev: 1.7 Model: EC-GOLD 2000-CAL hand held calibrator is used. Only the integral DIP switch / pushbutton user interface procedure is described here. See the 2000-CAL hand held calibrator manual for details if using it instead. USING THE DIP SWITCH FOR SETUP AND CALIBRATION Note: all of these settings are preset at the factory as per the customer requirements.

  • Page 12: Setting The High Alarm

    3. Press the Cal pushbutton to lock in the value. 3.3.5 SETTING THE CALIBRATION GAS CONCENTRATION This value tells the EC-Gold what the value of gas concentration will be used during calibration. 1. While the Status LED is blinking green, set the DIP switch as follows:...

  • Page 13: Setting The Network Address

    Model: EC-GOLD 3.3.6 SETTING THE NETWORK ADDRESS This value is only used in network applications. Each EC-Gold transmitter connected on a network must have a unique address. Network problems will result if 2 or more transmitters have identical addresses. 4 5 6...

  • Page 14: Calibration

    CALIBRATION CALIBRATION NOTES If the EC-Gold configuration is known i.e. what the calibration gas concentration value has been set for, and the calibration type (Single, or Dual Point) then the entire calibration procedure can be completed without removing the front cover.

  • Page 15: Dual Point Calibration

    If either setting is in doubt, then see section 3 to set these values. The Dual Point calibration is carried out if the EC-Gold must be zeroed in the field (i.e. a new sensor has been installed). This is the procedure: 1.
  • Page 16 For unsuccessful calibrations, the original calibration values remain unchanged. For example, if the EC-Gold calibration gas is set as 100 ppm via the DIP switches (this is described earlier), but the actual gas used is only 20 ppm then the calculated sensitivity will be out of allowed limits and will cause a calibration error.

  • Page 17: Self-Test Feature

    ECGOLDUM17.DOC Rev: 1.7 Model: EC-GOLD SELF-TEST FEATURE The Self-test feature only applies to EC Gold units with Carbon Monoxide (CO) sensors. The sensor health is checked by generating a small amount of Hydrogen gas in the sensor. Hydrogen produces a response similar to CO.

  • Page 18: Troubleshooting

    Make sure that DIP switch 7 is set to Off concentration. (down) position. • Make sure that the EC-Gold output mode is set to Analog mode and not to Discrete Voltage Output mode. See SETTING CONFIGURATION section for details. •...

  • Page 19: Controller Settings Sheet

    The factory settings column below lists the typical default settings. The user may change these values at any time either by the integral DIP switches or via the EC-Gold hand held calibrator. If changed, please fill in the USER SETTING column for future reference.

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