ENMET Corporation PO Box 979 Ann Arbor, MI 48106-0979 www.enmet.
Table of Contents 1.0 INTRODUCTION ......................................................................................................................................................................................... 1 1.1 UNPACK .................................................................................................................................................................................................. 1 1.2 CHECK ORDER .................................................................
List of Figures and Tables FIGURE 1: EX-6100 FEATURES .................................................................................................................................... 2 FIGURE 2: EX-6100 MOUNTING .................................................................................................................................... 3 FIGURE3: ACCESS TO EX-6100 FOR CONNECTION TO A CONTROL UNIT ........................................................................
ENMET Corporation EX-6100 1.0 Introduction The ENMET EX-6100 Fixed Gas Detectors for the detection of Flammable gases is ATEX Flameproof Certified for use in Group IIC hazardous locations. Directive 94/9/EC ATEX and the equivalent rating of Class1, Division 1, Groups A, B, C and D Harmonised Standards Used: EN60079-0:2006 Electrical apparatus for explosive gas atmospheres – Part 0: General requirements. EN60079-1:2007 Explosive atmospheres – Part 1: Equipment protection by flameproof enclosures “d”.
EX-6100 ENMET Corporation 2.0 Features of the EX-6100 The EX-6100 is an ATEX and IECEx certified fixed gas detector for use in potentially explosive atmospheres. The unit may be optionally fitted with a protective weather guard as shown in the photograph. The unit comprises an instrument housing having two cable gland entries and containing the connection terminals, electronics and display window. The housing containing the gas sensor has an M27 thread and is screwed into the bottom of the unit.
EX-6100 ENMET Corporation 3.0 Installation of the EX-6100 CAUTION: Area must be declassified during installation. The EX-6100 gas sensor/transmitter (S/T) is a 3-wire, 24 VDC 4-20 mA S/T for the detection of combustible gas. The S/T is meant to be used in conjunction with an appropriate power supply and controller. The EX-6100 sensor/transmitter is in an enclosure rated for use in a ATEX and IIC, Class I, Division 1, Groups B, C, D, classified area.
EX-6100 ENMET Corporation 3.2 Wiring the EX-6100 to a Control Unit CAUTION: Area must be declassified during installation. If the EX-6100 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. Turn cover securing stud counter-clockwise to allow cover to open.
EX-6100 ENMET Corporation Figure 5: Unplugging the Display Board for Connection Purposes 3.2 Power Supply The EX-6100 is powered from an 8 – 24 volt dc, 5 W maximum output supply. This may be either:a) An independent supply powering one or more units. b) A supply that is an integral part of a control card within a monitoring panel. 3.3 Analogue Output The analogue output provides a means of indicating to external equipment (e.g.
EX-6100 ENMET Corporation 3.5 Following Completion of the Installation: a) Replace the top display board using the locating pins on the underside of the board to ensure that it makes connection with the remainder of the electronics - see Figure 8. b) Ensure that the front cover has not been contaminated with dirt - paying particular attention to the thread. Replace the cover by rotating it several times clockwise until it reaches its limit then secure using the set screw – do not over tighten.
EX-6100 ENMET Corporation 3.8 Initial Gas Testing EX-6100 units are factory calibrated as detailed on the calibration certificate supplied with the instrument. However, it is always advisable after installation to confirm that the instrument reads zero with no gas present and responds accurately when presented with an appropriate concentration of the target gas.
EX-6100 ENMET Corporation 4.0 Operation The EX-6100 incorporates magnetically operated switches to allow non-intrusive operation of the menu system. To ‘press’ the switch requires movement of the stylus pen over the appropriate button. The key press LED will light to indicate that the button press is being detected. In some instances it may be necessary to hold the pen over the button for sufficient time to allow the microcontroller to determine the key that has been pressed.
EX-6100 ENMET Corporation 5.0 Calibration MENU UP 1 2 DOWN 3 ENTER 4 5.1 Sensor Calibration This feature allows the sensor to be calibrated. Ensure that the correct sensor type is selected in the configuration prior to calibration. Refer to section for details of the menu system operation. 5.1.1 Sensor Zero Tap the magnet over the menu switch, the display will change to Pass wait approximately 10 seconds and the display will show E 1.
EX-6100 ENMET Corporation 6 Sensor Replacement WARNING: Power must be removed from the EX-6100 before this or any internal procedure. Failure to do so may cause damage to equipment, bodily injury or death. 6.1 Combustible sensor Step1 Turn cover securing stud counter-clockwise to allow cover to open. Step 2 Remove cover by rotating counter-clockwise Step 3 Remove the display board - which can be left to dangle on its retaining wire.
EX-6100 ENMET Corporation Step 4 Remove the sensor board from the rear of the sensor – do not disconnect the wires from the main board. Step 5 Remove sensor insert using maintenance tool or slip joint pliers. Step 6 Mark the sensor pin position & undo the snap ring that retains the sensor in its housing. Step 7 Replace the sensor taking note of the pin marking in step 6.
EX-6100 ENMET Corporation Step 8 Apply Loctite 243 or a compound equal strength to the threads. Insert the sensor housing into the EX-6100 enclosure using the maintenance tool or slip joint pliers. loctite Maintenance Tool Step 9 Fix the sensor board back into postion.
EX-6100 ENMET Corporation Step 10 Fix ribbon cable, the boards removed from the support pillars and finally the display board back into position. Step 11 Replace cover and fully tighten. Step 12 Turn the cover securing stud clockwise until secure. Reconnect the instrument to power and calibrate per section 5.
EX-6100 ENMET Corporation 7 Fuses A 1Amp anti-surge fuse, housed within a surface mounted holder, is located within the EX-6100 to prevent overloading of the electronic circuitry in the event of an internal fault. In the event of the internal fuse blowing, access can be gained using the following procedure: 1. Switch OFF the supply to the EX-6100. 2. Release the grub screw located near the lip of the enclosure cover. NOTE: It is not necessary to remove the grub screw to release the enclosure front cover.
EX-6100 ENMET Corporation 9 Certification The EX-6100/FGD10 Series of Gas Detectors are ATEX and IECEx certified for use in potentially explosive atmospheres and is marked as follows:WARNING – DO NOT OPEN WHEN AN EXPLOSIVE GAS ATMOSPHERE IS PRESENT GAS DETECTOR TYPE FGD10 ** STATUS SCIENTIFIC CONTROLS LTD. MANSFIELD NG18 5ER.UK. IECEx SIR 08.0009X T4 (Ta -20OC to +60OC) T5 (Ta -20OC to +50OC) T6 (Ta -20OC to +35OC) II 2 G Ex d IIC 1180 SIRA 08ATEX1031X SERIAL No.
EX-6100 ENMET Corporation 11 Menu Mode The EX-6100 uses a password system to restrict the end user from carrying out certain changes that may compromise the use of the equipment. Menu Mode should only be entered by qualified personal. To enter the menu mode Sequence Tap: Menu, Up, Down, Enter, Up, Enter, Up, Menu If no inputs (taps) the EX-6100 returns to operational mode. Several calibration modes exist in the EX-6100 and these are accessible via the instruments simple menu system.
EX-6100 ENMET Corporation 11.2.6 E : 6 – Decimal Places The number of decimal places that are used to display the detected gas levels can be changed via this menu option. • • • • From the menu system select menu option: E: 6 and press ENTER. Using the NEXT and PREVIOUS buttons, select the required number of decimal places. Press ENTER. NOTE: Pressing MENU instead of ENTER will exit the menu without changing the number of decimal places to which the gas level will be displayed.
EX-6100 ENMET Corporation 11.2.11 E : 13 – Relay 1 The unit is fitted with a relay that is operated in conjunction with the alarm level. The user can select if the relay is normally Energized, E’ or normally de-energized, ‘d’ when the unit is not in an alarm condition. • • • • • From the menu system select menu option: E: 13 and press ENTER.
EX-6100 ENMET Corporation 11.2.16 E : 20 – Negative Zero Suppression This option is used to allow the user to suppress small amounts of negative sensor zero drift. The setting can be set between 0 and 10% of the sensor range as set by the FSD value. • • • • • • Press MENU to open the menu system. Using the NEXT and PREVIOUS buttons, select menu option: E:20 Press ENTER. Using the INCREASE and DECREASE buttons, set the required zero suppression value. Press ENTER to store the new value.
EX-6100 ENMET Corporation Appendix A A.1 Analog Output Calibration The analogue output is that of a current source. In order to calibrate the output it is necessary to monitor the output signal. This can be performed in one of two ways: Current measurement: Connect an ammeter (or multimeter set to measure current in the mA range) in series with the analogue output. FGD10 Analogue Output (4 – 20mA) – + + mA Control Unit Meter range: 0.004A – 0.020A 4mA – 20mA Advantage: Direct measurement of output.
EX-6100 ENMET Corporation A.3 Communications Protocol The communications protocol used by the EX-6100 is used for communications between devices connected via an RS232 connection at 19200 baud, 8 data bits 1 stop bit, no parity. This point-to-point, P2P, protocol is a frame-based protocol. A.3.1 Hardware connections PC 9-way ‘D’ connector 2 3 5 EX-6100 connection Tx Rx 0V PC 25-way ‘D’ connector 3 2 7 EX-6100 connection Tx Rx 0V A.3.
EX-6100 ENMET Corporation A.4.2 Reading a Variable Send a read frame with the Variable ID to be read: DLE RD var-id DLE Byte stuffing EOF Csum hi Csum lo Device response on success, where requested variable data < 255 bytes: DLE DAT data-len data Byte stuffing DLE EOF Csum hi Csum lo Device response on failure: DLE NAK reason Where ‘reason’ is a single byte failure code, the meaning of which depends on the device type, i.e. Reason = 1, NotReadable, Reason = 2, ReadOutOfRange A.4.
EX-6100 ENMET Corporation WARRANTY ENMET warrants new instruments to be free from defects in workmanship and material under normal use for a period of one year from date of shipment from ENMET. The warranty covers both parts and labor excluding instrument calibration and expendable parts such as calibration gas, filters, batteries, etc... Equipment believed to be defective should be returned to ENMET within the warranty period (transportation prepaid) for inspection.
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.
