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.
EC-GOLD for General Locations Use The EC-GOLD series of sensor transmitter has been designed specifically for use with the following electrochemical toxic sensors: carbon monoxide (CO) nitrogen dioxide (NO2) ammonia (NH3) hydrogen sulfide (H2S) chlorine (Cl2) 0-500 ppm 0-20 ppm 0-100 ppm 0-100 ppm 0-10 ppm # E90507 # E90510 # E90526 # E90527 # E90528 Electrochemical sensors offer the advantage of selective response to the target gas while minimizing nuisance alarms from interference gases.
ECGOLDUM17.DOC Model: EC-GOLD Rev: 1.7 TABLE OF CONTENTS 1.0 2.0 3.0 4.0 INSTRUMENT OVERVIEW ............................................................................................3 1.1 FEATURES ........................................................................................................3 1.2 DESCRIPTION...................................................................................................3 1.3 SPECIFICATIONS ...........................................................
ECGOLDUM17.DOC Model: EC-GOLD 1.0 INSTRUMENT OVERVIEW 1.1 FEATURES 1.2 Rev: 1.7 • Single gas transmitter for a large variety of gas types. • Carbon Monoxide sensor has expected life of 5 years min. (3 year guarantee) • Other sensors have expected life of 2 years (1 year guarantee) • Carbon Monoxide sensor has self test feature: periodic & on demand. • Output may be user selectable for analog (4-20mA / 2-10V) or Arjay’s Discrete Voltage Output (DVO). • Convenient pushbutton calibration.
ECGOLDUM17.DOC Model: EC-GOLD 3 Wire Discrete Voltage Output shielded connection Rev: 1.7 To other sensors RS-485 Alarm LED's ENMET ISA 66RLU ZONE PANEL BLOCK.DSF 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 3 Wire Discrete Voltage Output shielded connection RLU APPLICATION To other sensors RS-485 Alarm LED's GAS ALERT Vents BLOCK.
ECGOLDUM17.DOC Model: EC-GOLD 1.3 Rev: 1.7 SPECIFICATIONS OPERATION SELF TEST FEATURE 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 / 210V, or Arjay’s RLU Discrete Voltage Output which is used in grouped or zoned alarm systems.
ECGOLDUM17.DOC Model: EC-GOLD 2.0 INSTALLATION 2.1 MECHANICAL INSTALLATION Rev: 1.7 MECHANICAL INSTALLATION BASE Dual 3/4" & 1/2" diam. knock-outs for top entry cabling. FRONT COVER TOP VIEW 2.25" 7.75" 5.25" Dual 3/4" & 1/2" diam. knock-outs for rear entry cabling. EC GOLD TRANSMITTER BOARD 6.00" 3.00" Mounting holes (4 Places) BASE 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.
ECGOLDUM17.DOC Model: EC-GOLD ELECTRICAL INSTALLATION ELECTRICAL INSTALLATION OUT ! RS-485 NETWORK Use good installation practice! Do not run high voltage cables in the same conduit as signal wires. +24VDC - + For Networked applications, the 2 wire RS-485 network connects to the Enmet Central Access Panel. - + 5 4 3 2 1 For RLU Loop (alarm only) applications, the Output is configured for Loop output and connects to the corresponding Zone connection on the ISA-66RLU board.
ECGOLDUM17.DOC Model: EC-GOLD Rev: 1.7 ELECTRICAL INSTALLATION OUT ! Use good installation practice! Do not run high voltage cables in the same conduit as signal wires. RS-485 NETWORK +24VDC - + For Networked applications, the 2 wire RS-485 network connects to the Enmet Central Access Panel.
ECGOLDUM17.DOC Model: EC-GOLD 3.0 Rev: 1.7 STARTUP AND CONFIGURATION USER INTERFACE OVERVIEW 3 1 2 3 4 5 TB1 4 5 SENSOR BOARD Gnd D- D+ 2 +24V mA / Vout ON 1 1 2 3 6 4 5 6 7 The DIP switch and the Calibration pushbutton are used to configure / calibrate the unit.
ECGOLDUM17.DOC Model: EC-GOLD Rev: 1.7 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. 3.3 USING THE DIP SWITCH FOR SETUP AND CALIBRATION Note: all of these settings are preset at the factory as per the customer requirements.
ECGOLDUM17.DOC Model: EC-GOLD Rev: 1.7 After switches 4 – 6 are set as required, press the Cal pushbutton to lock in the values. 3.3.3 SETTING THE HIGH ALARM The EC-Gold will register a High Alarm condition when the sensor detects a gas concentration equivalent or exceeding this value. 1.
ECGOLDUM17.DOC Model: EC-GOLD 3.3.6 Rev: 1.7 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.
ECGOLDUM17.DOC Model: EC-GOLD 4.0 CALIBRATION 4.1 CALIBRATION NOTES Rev: 1.7 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. THE CALIBRATION PUSHBUTTON MAY BE ACCESSED WITHOUT REMOVING THE FRONT COVER BY USING A FINE TOOL SUCH AS A SCREWDRIVER THROUGH AN OPENING LOCATED FACING DOWN, LEFT OF CENTER.
ECGOLDUM17.DOC Model: EC-GOLD Rev: 1.7 any time as described in SETTING THE CALIBRATION GAS CONCENTRATION section described earlier. 2. 4.3 There are 2 possible sensor types: • Front facing sensor (CO only) which must be gassed by inserting the end of the calibration tubing through the front plate. Take care not to press the end of the tube too hard against the sensor. • Down facing sensors which must be gassed by fitting the calibration cup over the sensor fitting. 3.
ECGOLDUM17.DOC Model: EC-GOLD Rev: 1.7 any time as described in SETTING THE CALIBRATION GAS CONCENTRATION section described earlier. 2. Important: first make sure that the ambient air around the sensor is clean i.e. it has no traces of the gas being monitored. This can be difficult in places where there are vehicles etc.
Model: EC-GOLD 5.0 ECGOLDUM17.DOC Rev: 1.7 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. The amount of response is measured. With age, this response declines and is used to determine when a sensor should be changed. The test is initiated in 2 ways: Push to Test (on demand) and Periodic. 5.
Model: EC-GOLD 6.0 ECGOLDUM17.DOC Rev: 1.7 TROUBLESHOOTING ERROR DESCRIPTION WHAT TO DO • Check the power to the unit. The voltage should be 24VDC at the power connector with the positive and negative connected as shown on the connector label. • If the Power checks out, call Arjay Service. • Make sure that DIP switch 7 is set to Off (down) position. • Make sure that the EC-Gold output mode is set to Analog mode and not to Discrete Voltage Output mode.
Model: EC-GOLD 7.0 ECGOLDUM17.DOC Rev: 1.7 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.
