EW0526A4_en - rev. A
Oxygen detectors
–
URS40SS
05/10/2020
Gas detection systems for industrial environments
1/4
Sensigas
®
Oxygen detectors
ATEX
II 3G Ex nA nC d IIC T6 Gb certified
URS40SS
Sssssss
11…14Vdc power supply.
Electrochemical cell sensor designed for the detection of oxygen (O
2
).
Up to three alarm thresholds plus sensing element fail.
LED on sensing element body to indicate operating status.
Automatic countdown of sensor life.
Use
The URS40SS detectors are used to detect oxygen excess or deficiency in hazardous
(classified) areas of industrial environments and thermal power stations.
An
oxygen excess
forms if it leaks in hospitals, laboratories, welding centres and, more
in general, where oxygen is stored.
Oxygen deficiency
is an indirect measurement of the presence of other explosive or
asphyxiant
gases that deplete the oxygen in the air.
URS40SS detectors transmit data from a local bus connected with their Control Unit,
which acts as the master unit of the gas detection system.
Operation
If there is an oxygen leak or an absence of oxygen, the detector compares the measured
concentration value with the threshold limit setpoints and energises the system relays if
associate.
Alarm information is transmitted to the Control Unit, which energises its own internal
relay module (MR0) and the remote Relay and Display modules depending on the
associations.
Ordering
To order, simply state the part number:
URS40SS
.
For special versions, on request, please contact Customer Service.
