OLCT20
• O2, toxic or combustible gas monitor
• Explosion proof, Intrinsically safe
• 4-20 mA output• SIL2 approved
OLCT20
>>Overview>>Specifications>>DocumentsAsH3, CH4, Cl2, ClO2, CO, H2, H2S, HCl, HCN, LEL, NO2, NO, NH3, O2, O3, PH3, SiH4, SO2
The OLC(T) 20 Series of gas detectors are designed for indoor or outdoor facility monitoring and other applications to accommodate your gas detection requirements at a reasonable price.
OLC 20 Detector
The new generation of OLC 20 combustible sensors are unaffected by poisons. The units provide extremely quick response times and complete reliability. They can be fitted on a housing with a M25 or 3/4" NPT thread.
OLC 20D Detector
Based on the OLC 20 sensor unit, the OLC 20D detector is equipped with a 15 m long cable (standard version) and fitting gland for direct connection to a data logger. A high-temperature version allows operation at 200°C.
New Generation: New Advantages
The stainless steel detector provides protection and resistance to corrosive agents. Classified IP 66, they are resistant to dust and water ingress. The precalibrated sensors of the OLCT 20 and OLCT 20D can be disconnected by turning the head of the unit. These “smart” sensors can be calibrated on a work bench, outside hazardous areas.
Type:
|
XP transmitter
(OLCT 20D-Remote) |
IS transmitter
(OLCT 20D-Remote) |
XP detector
(OLC 20D-Remote) |
Detection Principle:
|
Catalytic/Electrochemical |
Electrochemical |
Catalytic |
Detected Gases:
|
Flammable, toxics and oxygen |
Toxics and oxygen |
Flammable |
Measuring Range:
|
Gases |
Symbol |
Range |
Increments |
Oxygen |
O2 |
30.00% of volume |
0.1% |
Carbon Monoxide |
CO |
100, 300 and 1000 ppm |
1 ppm |
Hydrogen Sulfide |
H2S |
30, 100 and 1000 ppm |
0.1 ppm |
Nitric Oxide |
NO |
100, 300 and 1000 ppm |
1 ppm |
Nitrogen Dioxide |
NO2 |
10.0 and 30.0 ppm |
0.1 ppm |
Sulfur Dioxide |
SO2 |
10.0, 30.0 and 100 ppm |
0.1 ppm |
Chlorine |
Cl2 |
10.0 ppm |
0.1 ppm |
Hydrogen |
H2 |
2000 ppm |
1 ppm |
Hydrogen Chloride |
HCl |
30.0 and 100 ppm |
0.1 ppm |
Hydrogen Cyanide |
HCN |
10.0 and 30.0 ppm |
0.1 ppm |
| Hydrogen Fluoride |
HF |
10.0 ppm |
0.1 ppm |
Ammonia |
NH3 |
100 ppm
1000 ppm |
1 ppm |
Ozone |
O3 |
1.00 ppm |
0.01 ppm |
Phosphine |
PH3 |
1.00 ppm |
0.01 ppm |
Chlorine Dioxide |
ClO2 |
3.00 ppm |
|
Silane |
SiH4 |
50.0 ppm |
1 ppm |
Arsine |
AsH3 |
1.00 ppm |
0.01 ppm |
Methane |
CH4 |
0 to 100% of volume |
1% |
Hydrogen |
H2 (catharometer) |
0 to 100% of volume |
1% |
Ammonia |
NH3 (catalytic) |
0 to 5000 ppm |
100 ppm |
Flammable Gas |
LEL |
0 to 100% LEL |
1% |
|
Housing: |
Stainless steel type 316L
|
Precalibrated Sensor:
|
yes
|
yes
|
no
|
Power Supply at the Detector:
|
15 to 30 VDC (catalytic)
15 to 30 VDC (chemical) |
10 to 26 VDC (on the detector) |
Depending
on the detector |
Maximum Power Consumption:
|
100 mA (catalytic)
25 mA (chemical)
|
25 mA
|
Depending
on the detector |
Output Signal:
|
4-20 mA |
4-20 mA |
Wheatstone bridge |
Load Impedance:
|
250 Ω (catalytic)
Depending on power supply (chemical) |
47 Ω max |
Not applicable |
Wiring:
|
3 reinforced wires (catalytic)
2 reinforced wires (chemical) |
2 reinforced wires |
3 einforced wires |
Loop Impedance with ISC Monitor:
|
32 Ω(catalytic)
(1 km with 1.5 mm2)
128 Ω (chemical)
(4 km with 1.5 mm2) |
32 Ω
(1 km with 1.5 mm2) |
32 Ω(catalytic)
(1 km with 1.5 mm2) |
Wiring Connection:
|
Delivered with a 6mm-diameter cable
|
Fastening:
|
M25 thread to screw
or 3/4’’NPT
(OLCT 20D-With a stirrup) |
M25 thread to screw
or 3/4’’NPT
(OLCT 20D-With a stirrup) |
M25 thread to screw
or 3/4’’NPT
(OLC 20D-With a stirrup) |
Ingress Protection:
|
IP 66 |
IP 66 |
IP 66 |
Certification:
|
EEx d IIC T6
II 2 GD
INERIS 01 ATEX 0004X |
EEx ia IIC T4
II 1 GD
INERIS 01 ATEX 0004X |
EEx d IIC T6
II 2 GD
INERIS 01 ATEX 0004X |
CEM Mark:
|
EN 50270 |
EN 50270 |
EN 50270 |
Weight:
|
800 gr
|
800 gr
|
Dimensions:
|
L 130 x D 60
(OLCT 20D - L 177 x D 60) |
L 130 x D 60
(OLCT 20D - L 177 x D 60) |
L 130 x D 60
(OLC 20D - L 177 x D 60) |
Operating Temperature (for electronic):
|
-25°C to +60°C
(-13°F to 140°F)
|
-25°C to +60°C
(-13°F to 140°F) |
-25°C to +70°C
(-13 °F to158°F)
-25 °C to +200°C
(-13 °F to392°F)
in HT version
|
Relative Humidity Uncondensed: |
10 to 95% RH (non-condensing), typical |
Oldham OLCT 20 Transmitter Documents
Literature
Manuals
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