ENMET Corporation PO Box 979 Ann Arbor, MI 48106-0979 www.enmet.
EX-5185-PID ENMET Corporation Table of Contents 1.0 INTRODUCTION ....................................................................................................................................................... 1 1.1 Unpack ...............................................................................................................................................................................1 1.2 Check Order .......................................................................................
EX-5185-PID ENMET Corporation 1.0 Introduction The ENMET EX-5185 sensor/transmitters (S/T) is a 3-wire, 24 VDC 4-20mA S/T for the detection of toxic gas, utilizing a Photoionization detector (PID) sensor. The EX-5185 is meant to be used in conjunction with an appropriate power supply and controller. The ENMET EX-5185 sensor/transmitter has been designed and approved to be used in a Class I, Div. 1, Groups B, C, D, classified areas. The approval was issued by CSA International.
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EX-5185-PID ENMET Corporation 3.0 Installation of the EX-5185 CAUTION: Area must be declassified during installation. The ENMET EX-5185 gas sensor/transmitter (S/T) is a 3-wire, 24 VDC, 4-20 mA S/T for the detection of toxic gas. The S/T is meant to be used in conjunction with an appropriate power supply and controller. The ENMET EX-5185 sensor/transmitter has been designed and approved to be used in a Class I, Div. 1, Groups B, C, D, classified areas. The approval was issued by CSA International.
EX-5185-PID ENMET Corporation 3.2 Wiring the EX-5185 to a Control Unit CAUTION: Area must be declassified during installation. Run conduit and 16 AWG (1.5MM2) wires to the enclosure from the power supply and controller. If the EX-5185 is installed in a hazardous location as defined by the National Electrical Code, then ALL wiring must be in accordance with the National code and any local governing codes. Open the enclosure, and remove the 2 screws that retain the display overlay to the circuit board.
EX-5185-PID ENMET Corporation Display Overlay Screws (2 places) Display Overlay Display Magnetic Switches (2 places) Display Overlay Standoffs (2 places) Printed Circuit Board (PCB) J4 and J8 Terminals are located on the bottom side of PCB Sensor/Transmitter Enclosure Cutaway View Display Overlay Magnetic Switches (2 places) Printed Circuit Board (PCB) Figure 3: Terminal Positions EX-5185 Sensor/Transmitter When wiring is complete, reassemble the EX-5185.
EX-5185-PID ENMET Corporation 4.0 Operation of the EX-5185 It is best to have the EX-5185 transmitters powered up and operational for 24 hours before applying calibration or test gas to them. When the EX-5185 transmitter is first powered up, it goes through a series of momentary screens, which identify the instrument model number, serial number and software revision.
EX-5185-PID ENMET Corporation 4.2 Normal Display Mode When the EX-5185 is installed as described in section 3, and in clean air, the POWER green LED is on, the display is lit and the information on the display is measurement of the target gas detected by the EX-5185. The red alarm and fault LEDs are not lit. To advance through displays of operational information tap the magnet over the MENU button. NOTE: Software revision may cause variations of display output.
EX-5185-PID ENMET Corporation 5.0 Maintenance of the EX-5185 CAUTION: Do not open the EX-5185 S/T in a classified area. CAUTION: Do Not Attempt A Span Procedure Without Calibration Gas Applied to The Sensor; if this is done, the S/T is forced into a calibration fault mode. Magnetic switches control the MENU and SELECT functions. The MENU and SELECT switch locations are indicated on the display panel, see Figure 3.
EX-5185-PID ENMET Corporation 5.2 Calibration of the EX-5185 Calibration is the process of setting the instrument up to read accurately when exposed to a target gas. The Zero function sets the clean air reference point and the Span function sets the sensitivity of the instrument. Initial Calibration: Wait 24 hours after initially supplying power to the EX-5185 sensor/transmitter (S/T) before initial calibration.
EX-5185-PID ENMET Corporation Table 3: Examples of Standard Calibration Gas Gas Benzene Range 0 - 20 ppm Alarm 1* Alarm 2* Alarm 3* 0.5 PPM 1.0 PPM Sensor Part Number Span Gas Isobutylene Gas Cylinder Part Number 5.0 PPM 03028-010 10 PPM 03290-010 1, 3-Butadine 0 – 20 ppm 0.5 PPM 1.0 PPM 5.0 PPM 03028-010 10 PPM 03290-010 Carbon disulfide 0 – 20 ppm 1.0 PPM 5.
EX-5185-PID ENMET Corporation 5.2.1 Zero Adjust A ZERO function should be performed only when the EX-5185 sensor/transmitter is exposed to fresh air. If the air at the sensor is in question, use a cylinder of 20.9% oxygen to provide a clean air reference. Attach the cylinder to the calibration adapter, fill the humidifier bowl halfway with water and allow gas to flow over the sensor for 3 – 4 minutes. Enter the maintenance menu by placing the magnet over MENU switch for 2 to 4 seconds.
EX-5185-PID ENMET Corporation Normal Display Mode 5ppm HOLD the magnet over the MENU switch for 2 – 4 seconds to enter the Maintenance Menus MENU Exit SELECT Tap the SELECT switch to return to the Normal Display Mode. See Section 5.2.
EX-5185-PID mA Span ENMET Corporation To change mA Span set point: Tap the MENU switch until mA Span is displayed Tap the SELECT switch to display the set point The MENU switch changes digit indicated by underscore cursor The SELECT switch locks underscored digit and moves to next digit 100 SELECT MENU To return to Normal Gas Display: Tap MENU switch until EXIT is displayed Then tap SELECT switch Figure 5: EX-5185 Maintenance Menu Flow chart 5.
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PO Box 979 680 Fairfield Court Ann Arbor, Michigan 48106-0979 734.761.1270 Fax 734.761.3220 Returning an Instrument for Repair ENMET instruments may be returned to the factory or any one of our Field Service Centers for regular repair service or calibration. The ENMET Repair Department and Field Service Centers also perform warranty service work.
Repair Return Form Mailing Address: ENMET Corporation PO Box 979 Ann Arbor, Michigan 48106 Phone Number: FAX Number: Shipping Address: ENMET Corporation Attn: Repair Department 680 Fairfield Court Ann Arbor, Michigan 48108 734.761.1270 734.761.
