Detector / Transmitter for combustible gas - Imbema Controls

Explosive Risk
OLC 10
OLC10 TWIN
OLCT 10
Detector / Transmitter for combustible gas
Especially studied for
applications in boiler rooms and
carparks, the range of sensors
OLC(T)10 is a model of quality-price
ratio for the monitoring of gases and
combustible vapors in ambient air.
Reduced size, simplicity of
installation and use are the principal
assets of these 4-20 mA detectortransmitters.
Used with the MX15
control unit, they guarantee a
solution in conformity with the
French and European standards.
Spécifications :
- Catalytic Cells
- Signal 4-20 mA on
OLCT10
- IP66
- Reactivity
- ATEX Approvals for use
in explosive atmospheres
OLC 10 / OLC 10 TWIN OLCT 10
Detection principle :
Catalytic cells
Standard ranges : 0-100 % LEL Methane, Propane, Butane or Hydrogen
Output signal : Wheastone Bridge 4-20mA , default < 0.5 mA or
> 23.2mA
Non ambiguity reading : From OLDHAM control unit fixed at 23.2 mA if value
> 100% LEL
Acknowledgement switching
on / off the transmitter
Possibility to disable non
ambiguity reading by
programming slot
Settings : On OLDHAM control unit Direct by potentiometers Zero
and Sensitivity:
access to the pots by trap door
on front plate
2 mAoutput signal in
maintenance mode
4 points connector to get gas
measurement and tension
image (shunt of 100 Ω)
Power supply : By MX15 control unit OLCT10 : from 15 to 30 V DC
1:I out (signal) 2 : 0V 3 : +24V DC
Consumption : Depends on control unit 100 mA max
Connections: 3 wires connector block,
outdistances maximum 300m with
1.5 mm²
1 cable-gland M16 : diameter of
cable 4 to 8 mm
Oldham control unit :
1 km with 3 x 1,5 mm²
(32 Ω max in loop)
OLC 10 TWIN : 1 connector block
3 wires to control unit, 1
connector block 4 wires to 2 nd
detector, outdistances maximum
300m with 1.5mm², 2 cable-glands
M16, diameter of cable 4 to 8 mm.
3 wires Connector block,
1 cable gland M16, diameter
of cable 4 to 8 mm
Dimensions :
width 118 mm, height 157 mm, depth 60 mm
Made of :
ABS
Protection :
IP66
Estimated useful life :
> 36 months
Temperature range : -10 to + 45 °C
Humidity range :
0 % HR to 95 %HR
Pressure range : 1 bar ± 20 %
Temperature effect < 5 % LEL Methane or < 20 % of indicated value
OLCT 10 ( -10 °C + 40 °C) :
Long-term effect for Methane
under normal conditions of
Zero drift < 5 % LEL / year
Sensitivity : < 10 % of reading / year
use:
Humidity effect: ± 5 % from relative humidity / (10 to 90 % RH) at 40°C
Response time :
T50

Dimensions :
MX15 control unit
Connection diagram between an OLC 10 or OLCT10 and MX15 control unit :
1 2 3
104
1 2 3
Connect the 3 wires according to
classification
Connection diagram of 2 OLC 10 TWIN from MX15 control unit :
MX15 control unit
1 2 3
IN
1 2 3
1 2 3
1 2 3 4
1 2 3 4
OUT
IN
France :
NORD : 03 21 60 80 20
PARIS-NORMANDIE : 01 30 12 08 50
EST : 03 87 50 83 90
OUEST : 02 99 22 70 22
SUD-EST : 04 78 26 53 62
MEDITERANNEE : 04 42 46 10 46
SUD-OUEST : 05 63 21 16 00
1 2 3 4
OUT
1 2 3 4