ENMET EX-6165 - Manual (Page 16)

EX-6120, 6165 SERIES IR ENMET Corporation
13
7 Fuses
A 1Amp anti-surge fuse, housed within a surface mounted holder, is located within the EX-6120, 6165 S ERIES IR 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-6120, 6165 S ERIES IR .
2. Release the grub screw located near the lip of the enclosure cover.
N OTE : It is not necessary to remove the grub screw to release the enclosure front cover.
3. Remove the enclosure front cover by rotating it several times in a counter-clockwise direction.
4. Unplug the display board from within the enclosure.
5. Remove the 3 screws located around the edge of the next board.
6. Unplug this board.
7. The surface mounted fuse holder can now be located on the board below. Replace only with a fuse of the same type and
rating:-
1Amp Anti-surge ‘Nano fuse’
Assembly is the reverse of the above procedure.
8 Specifications
Materials :
Instrument Body – Aluminium Pressure Die Casting
Sensor Housing – Stainless Steel Grade 303
Weather guard – Stainless Steel Grade 304 & Nylon 66
Cable entries :
2 x 20 mm, or
2 x ½ NPT, or
2 x ¼ NPT
Weights :
EX-6120, 6165 S ERIES IR (excluding weather guard) – 2.0 Kg ( 3.3 lb)
Magnetic Pen – 60 grams
Weather guard – 200 grams
Gas type : Infrared – (Note: IR Sensors have not response to Hydrogen)
Input voltage : 8 to 24 volts dc
Input power : 5 Watts maximum
Internal fuse : 1 Amp antisurge 'Nanofuse'
Analogue
output
:
4 to 20mA (10 bit resolution)
Relays
Relay 1 – Alarm 1
Relay 2 – Alarm 2
Relay 3 – Fault
Contact Rating 300Vac, 3 Amps (Non-inductive load)
RS232 output : Communications with PC at 19200 baud
Sensor type : NDIR Infrared
Measurement
range
:
Hydrocarbon Sensor (Methane Calibration)
0 – 100% LEL (5% vol. CH
4
) or 0 – 100% volume CH
4
Carbon Dioxide Sensor
Ranges form 0-1000ppm up to 0-100% Volume CO
2
Response time : Typically T
90
< 30 seconds (CH
4
)
Measurement
resolution
: 1% LEL or 1% volume (CH
4
)
IP rating : Enclosure IP66, Sensor IP65
Display : 4 Digit, 7 segment liquid crystal
Keypad : 4-Button magnetically operated
Software : Software configuration provided via LCD display and multifunction keypad
Operating
temperature
: - 20 to +60 O C
Humidity range : 0 to 95% RH non-condensing
Operating
pressure
: Atmospheric + or - 10%
Performance
standards
: EN 60079-29-1:2007