ENMET EX-6100 User Manual
ENMET Corporation
PO Box 979
Ann Arbor, MI 48106-0979
www.enmet.com
EX-6100 C
With Pellistor/Catalytic Type Sensor
OMBUSTIBLE GAS
S
ENSOR/TRANSMITTER
Manual
Manual Part Number
80003-122
MCN-14-001, 01/22/14
Table of Contents
1.0 INTRODUCTION ......................................................................................................................................................................................... 1
1.1 U
NPACK
1.2 C
1.3 S
2.0 FEATURES OF THE EX-6100..................................................................................................................................................................... 2
3.0 INSTALLATION OF THE EX-6100 .............................................................................................................................................................. 3
3.1 M
3.2 W
3.2 P
3.3 A
3.4 RS232 O
3.5 F
3.6 A
3.7 I
4.0 OPERATION ............................................................................................................................................................................................... 8
5.0 CALIBRATION ............................................................................................................................................................................................ 9
5.1 S
6 SENSOR REPLACEMENT .......................................................................................................................................................................... 10
6.1 C
7 FUSES ......................................................................................................................................................................................................... 14
8 SPECIFICATIONS ....................................................................................................................................................................................... 14
9 CERTIFICATION .......................................................................................................................................................................................... 15
10 EX-6100 ACCESSORIES AND CALIBRATION GAS ................................................................................................................................ 15
11 MENU MODE ............................................................................................................................................................................................. 16
APPENDIX A .................................................................................................................................................................................................. 20
A.1 A
A.2 E
A.3 C
A.4 F
A.4.4 W
WARRANTY ................................................................................................................................................................................................... 23
.................................................................................................................................................................................................. 1
HECK ORDER
ERIAL NUMBERS
OUNTING THE
IRING THE
OWER SUPPLY
NALOGUE OUTPUT
OLLOWING COMPLETION OF THE INSTALLATION
PPLYING POWER
NDICATORS
ENSOR CALIBRATION
5.1.1 Sensor Zero .......................................................................................................................................................................................................................... 9
5.1.2 Sensor Span ......................................................................................................................................................................................................................... 9
OMBUSTIBLE SENSOR
11.2.1 E : 1 – Sensor Zero........................................................................................................................................................................................................... 16
11.2.2 E : 2 – Sensor Span ......................................................................................................................................................................................................... 16
11.2.3 E : 3 – Sensor FSD ........................................................................................................................................................................................................... 16
11.2.4 E : 4 – Output Zero (4mA) ................................................................................................................................................................................................ 16
11.2.5 E : 5 – Output Span (20mA) ............................................................................................................................................................................................. 16
11.2.6 E : 6 – Decimal Places ..................................................................................................................................................................................................... 17
11.2.7 E : 7 – Firmware Version .................................................................................................................................................................................................. 17
11.2.8 E : 8 – Sensor Selection ................................................................................................................................................................................................... 17
11.2.9 E : 9 – Engineer diagnostics ............................................................................................................................................................................................. 17
11.2.10 E : 12 – Cross reference ................................................................................................................................................................................................. 17
11.2.11 E : 13 – Relay 1 .............................................................................................................................................................................................................. 18
11.2.12 E : 14 – Relay 2 .............................................................................................................................................................................................................. 18
11.2.13 E : 15 – Alarm Level 1 .................................................................................................................................................................................................... 18
11.2.14 E : 16 – Alarm Level 2 .................................................................................................................................................................................................... 18
11.2.15 E : 19 – Positive Zero Suppression ................................................................................................................................................................................ 18
11.2.16 E : 20 – Negative Zero Suppression .............................................................................................................................................................................. 19
11.2.17 E : 27 – Hysteresis.......................................................................................................................................................................................................... 19
11.2.18 E : 28 – Firmware update ............................................................................................................................................................................................... 19
11.2.19 E : 29 – Relay 3 .............................................................................................................................................................................................................. 19
11.2.20 E : 30 – Password........................................................................................................................................................................................................... 19
11.2.21 E : 31 – Warm-up timer .................................................................................................................................................................................................. 19
NALOG OUTPUT CALIBRATION
A.1.1 Analogue Output Zero ........................................................................................................................................................................................................ 20
A.1.2 Analogue Output Span ....................................................................................................................................................................................................... 20
RROR CODES
OMMUNICATIONS PROTOCOL
A.3.1 Hardware connections ....................................................................................................................................................................................................... 21
A.3.2 Control Byte Constants ...................................................................................................................................................................................................... 21
RAME STRUCTURE
A.4.1 Variables............................................................................................................................................................................................................................. 21
A.4.2 Reading a Variable ............................................................................................................................................................................................................. 22
A.4.3 Read example - read live data ........................................................................................................................................................................................... 22
RITING A VARIABLE
......................................................................................................................................................................................... 1
..................................................................................................................................................................................... 1
EX-6100 E
EX-6100
....................................................................................................................................................................................... 5
UTPUT
....................................................................................................................................................................................... 5
..................................................................................................................................................................................... 6
............................................................................................................................................................................................. 6
...................................................................................................................................................................................... 20
NCLOSURE
TO A CONTROL UNIT
................................................................................................................................................................................. 5
.............................................................................................................................................................................. 9
........................................................................................................................................................................... 10
............................................................................................................................................................................... 21
........................................................................................................................................................................... 22
....................................................................................................................................................... 3
................................................................................................................................................ 4
: ........................................................................................................................................ 6
............................................................................................................................................................... 20
................................................................................................................................................................ 21
List of Figures and Tables
F
IGURE 1:
F
IGURE 2:
F
IGURE3: ACCESS TO
F
IGURE 4: ARMORED CABLE GLAND INSTALLATION
F
IGURE 5: UNPLUGGING THE DISPLAY BOARD FOR CONNECTION PURPOSES
F
IGURE 6: ANALOGUE OUTPUT
F
IGURE 7: EEX D CONDUIT INSTALLATION
F
IGURE 8: REPLACING THE DISPLAY BOARD
F
IGURE 9: APPLING TEST GAS TO
F
IGURE
T
ABLE 1: MAGNETIC KEYPAD FUNCTIONALITY
T
ABLE 3:
T
ABLE 4:
EX-6100 F
EX-6100 M
EATURES
OUNTING
EX-6100
.................................................................................................................................... 2
.................................................................................................................................... 3
FOR CONNECTION TO A CONTROL UNIT
..................................................................................................................................... 5
EX-6100 .................................................................................................................. 7
10: O
PERATION OF MAGNETIC SWITCHES
EX-6100 M
EX-6100 S
ENU OPTIONS
ENSOR SELECTIONS
............................................................................................................................ 16
........................................................................ 4
...................................................................................................... 4
................................................................. 5
..................................................................................................................... 5
................................................................................................................. 6
......................................................................................................... 8
.............................................................................................................. 8
................................................................................................................... 17
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”.
Notified Body for Hazardous Area Certification:
SIRA Certification Service
Rake Lane, Eccleston,
Chester, CH4 9JN.
Notified Body Number : 0518
Hazardous Area Certificate Number:
SIRA 08ATEX1031X II 2 G Ex d IIC
T4 (Ta = -20OC + 60 OC )
T5 (Ta = -20OC + 50 OC )
T6 (Ta = -20OC + 35 OC )
N
OTE
: All specifications stated in this manual may change without notice.
1.1 Unpack
Unpack the EX-6100 and examine it for shipping damage. If such damage is observed, notify both ENMET customer service
personnel and the commercial carrier involved immediately.
Regarding Damaged Shipments
N
OTE
: It is your responsibility to follow these instructions. If they are not followed, the carrier will not honor
any claims for damage.
This shipment was carefully inspected, verified and properly packaged at our company and delivered to the carrier in
good condition.
When it was picked up by the carrier at ENMET, it legally became your company’s property.
If your shipment arrives damaged:
• Keep the items, packing material, and carton “As Is.” Within 5 days of receipt, notify the carrier’s local office and
request immediate inspection of the carton and the contents.
• After the inspection and after you have received written acknowledgment of the damage from the carrier, contact
ENMET Customer Service for return authorization and further instructions. Have your Purchase Order and Sales
Order numbers available.
ENMET either repairs or replaces damaged equipment and invoices the carrier to the extent of the liability coverage,
usually $100.00. Repair or replacement charges above that value are your company’s responsibility.
The shipping company may offer optional insurance coverage. ENMET only insures shipments with the shipping
company when asked to do so in writing by our customer. If you need your shipments insured, please forward a written
request to ENMET Customer Service.
Regarding Shortages
If there are any shortages or questions regarding this shipment, please notify ENMET Customer Service within 5 days of
receipt at the following address:
ENMET Corporation
734-761-1270 734-761-3220 Fax
680 Fairfield Court
Ann Arbor, MI 48108
1.2 Check Order
Check, the contents of the shipment against the purchase order. Verify that the EX-6100 is received as ordered. [Each EX6100 is labeled with its target gas.] If there are accessories on the order, ascertain that they are present. Check the contents of
calibration kits. Notify ENMET customer service personnel of any discrepancy immediately.
1.3 Serial Numbers
Each EX-6100 is serialized. These numbers are on tags on the equipment and are on record in an ENMET database.
Notified Body for ATEX Quality Assurance Notification:
Baseefa
Rockhead Business Park
Staden Lane, Buxton SK17 9RZ, UK
Notified Body Number : 1180
ATEX Quality Assurance Notification Number:
2056
1
EX-6100
GAS DETECTOR TYPE
GAS DETECTOR TYPE
Inlet/Outlet
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. The sensor housing itself is a certified
component and must not be removed in service.
Behind the display window are-
See Figure 1 for location of features:
Feature Description
Display
Magnetic Switches
Visual Indicators
Power supply
Analogue output
Communications Output
Relay
Gland (Strain Relief)
A 4-digit LCD display
Four magnetically operated switches that are activated through the display window using a magnetic
pen that is supplied with the unit.
LED indicators for POWER, ALARM & KEY PRESS
8 to 24 volts dc (non-intrinsically safe)
4 to 20mA dc
RS232
Relay version has 3 factory-fitted relays. Each provides a set of voltage free changeover contacts to
perform the following control functions contact outputs for Alarm Level 1, Alarm Level 2 and Fault
entry threads available – 20mm, ½” or ¾” NPT
Magnetic switches control the instrument maintenance functions. The magnetically operated switches allow the unit to be
calibrated while power is still applied without the need to remove the cover from the unit.
Versions without relays fitted are also available.
The self-adhesive label on the outer surface of the enclosure indicates whether or not the relays are fitted as shown below:
IMPORTANT – When used in environments where the instrument is exposed to salt spray or diesel it is recommended that the
EX-6100 is always fitted with its protective weather guard. The weather guard is attached with tamperproof screws to
ensure that it is not inadvertently removed.
NO CONTROL RELAYS FITTED
Port 1 of 2
MENU UP DOWN ENTER
CONTROL RELAYS FITTED
Inlet/Outlet
Port 1 of 2
2 x 0.27 (2 x 7) dia.
Mounting Holes
Display
Menu Switches
Power & Alarm LEDs
Optional
Weatherguard
Figure 1: EX-6100 Features
2
EX-6100
Optional
2 x 0.27 (2 x 7) dia.
ENMET Corporation
3.0 Installation of the EX-6100
C
AUTION
C
AUTION
3.1 Mounting the EX-6100 Enclosure
C
AUTION
:
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. Appropriate wiring, conduit
and fittings are required for proper installation in a explosion proof rated environment.
: Since the sensor/transmitter detects gas only at the sensor location, pay attention to the possible sources of gas, the
density of the gas, locations where the gas may be confined and locations where the gas may damage or injure
property or personnel, when choosing locations of sensor/transmitters.
Take into consideration environmental factors when deciding on S/T location. Avoid locations where the S/T may be damaged
by liquid immersion, excessive heat or other known hazards. Also, take precautions to insure condensation inside of the
conduit does not enter the S/T.
Mount the enclosure, using the two mounting holes provided see Figure 2. Pay particular attention to the source and density of
the gas being detected when choosing the location. Mount the S/T near the ceiling for lighter than air gases /vapors and near
the floor for heavier then air gas/vapors. Contact ENMET if you have questions regarding your application.
: Before connecting S/T to controller remove the power source to controller. Failure to do so may cause damage to
sensitive components.
Inlet/Outlet
Port 1 of 2
4.96 (126) Centers
4.53 (115)
Inlet/Outlet
Port 1 of 2
Conduit fitting
Typically: 3/4″ NPT female
MENU UP DOWN ENTER
190)
250)
Power & Alarm LEDs
Optional
Weatherguard
Approximate Measurements in Inches (mm)
Maximum Depth = 5 Inches (127mm)
Mounting Holes
Display
Menu Switches
Figure 2: EX-6100 Mounting
3
EX-6100
N/O
COM
N/C
Alarm 1
N/O
COM
N/C
Alarm 2
N/O
COM
N/C
Fault
ENMET Corporation
3.2 Wiring the EX-6100 to a Control Unit
C
AUTION
:
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.
Remove cover by rotating counter-clockwise.
Figure3: Access to EX-6100 for Connection to a Control Unit
The cable entry threads are 20mm, ½” or ¾” NPT female.
The EX-6100 enclosure is manufactured from die cast aluminum*. Therefore, the use of glands, conduit fittings and blanks
made from brass should be avoided because if moisture is present, bi-metallic corrosion may occur due to the chemical reaction
between the two materials.
Glands and fittings plated with nickel, tin or zinc will provide improved protection but in harsh environments the use of
stainless steel is recommended.
Conduit
or Shielded Cable
ATEX certified Ex d armoured
cable glands
Conduit
or Armoured Cable
- +
Aout
Mount vertically
Relay 3
as shown
Figure 4: Armored Cable Gland Installation
Relays - three relays are provided:
Alarm 1 and Alarm 2 are associated with the alarm points.
Alarm 3 is associated with fault conditions.
All relays are factory set to de-energize state non alarm.
RS232
0V
Relay 2
Rx
Tx
- +
PSU
Relay 1
Important
Connect enclosure
earth-ground to a high
integrity earth ground
4
EX-6100
Alarm 1
Alarm 2
Fault
0V
A+
0V
12-24V DC
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. data loggers, remote displays, control cards) the
gas levels currently being detected by the system. The output is in the form of the industry standard 4 to 20mA current source.
The analogue output is factory set such that 4mA represents zero gas and 20mA represents the full scale gas level of the EX-
6100.
I (4-20mA)
PSU
Control
Unit
EX-6100
Figure 6: Analogue Output
3.4 RS232 Output
This output is designed to be compatible with a PC fitted with an RS232 serial communications port. Suitable software is
available for installation in the PC. Contact ENMET Corporation for details.
Conduit
Mount vertically
as shown
ATEX Certified compound-filled
conduit seals (stopping boxes)
RS232
0V
Rx
Tx
- +
Aout
N/O
Relay 3
N/C
N/O
COM
Relay 2
- +
PSU
N/C
N/C
N/O
COM
COM
Relay 1
Conduit
Important
Connect enclosure
earth-point to a high
integrity earth
Figure 7: EEx d Conduit Installation
5
EX-6100
Colo
r Identity
Operation
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.
ENMET Corporation
Figure 8: Replacing the Display Board
3.6 Applying power
Caution: The cover must be in place before applying power
Once the installation is complete and the covers are secure then power can be applied. The power source should be between 8
and 24 volts dc.
When power is first applied to the EX-6100, an initialization procedure is performed as follows:
All segments on the LCD are shown 8.8:8.8
The software version is displayed 1.3.0
The manufacturer code is displayed SSCL
The sensor type is displayed P
Warm up count down 30
The detected gas level present is displayed and the EX-6100 becomes operational.
3.7 Indicators
Three LED indicators are visible from the front panel of the instrument. These are:
Red Alarm Illuminates when either alarm level has been reached.
Green Power Always ON when power is connected.
Yellow Key press Illuminates when the magnetic switches are operated.
6
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