- Read and understand this user manual and all other safety instructions before using this equipment.
- This equipment must be operated by trained and experienced personal only.
- If the ST450EC is used in a hazardous environment, the relevant regulations for explosion hazardous equipment
must be observed at all times.
- The gas detector should be installed in an area that is free from shocks or vibrations.
- The gas detector should be accessible for maintenance and/or calibration purposes at all time.
- The gas detector (sinter) should be pointed downwards to avoid accumulation of moisture, dirt, dust and/or
chemical residue. It is also allowed for indoor applications to point the sensor horizontal as long as the sensor is
not affected by moisture, dirt, dust and/or chemical residue.
- IP ratings do not imply that the equipment will detect gas during and after exposure to those conditions.
- During installation the gas detector should be isolated from local earth or conductive surface. The gas detector
should only be connected to a clean earth through cable gland and the shielding of the signal cable.
- Avoid signal cables close to high power cables, inverters, radio transmission lines, computer communication
cables or cables carrying pulses of high current.
- The ST450 is designed for the detection (temporarily) of unexpected (toxic) gas concentrations or continues
Oxygen (O
2
) measurement in ambient air.
- The ST450EC is equipped with an electrical chemical sensor and is not suitable for use in environments where
continuous concentrations of gas are present (except O
2
version, which performs continuous measurement).
Continues concentrations of gas affects the life time of the sensor and creates a significant loss of sensitivity.
- To minimize deviations, circumstances during calibration should approach normal operational environment
(temperature, humidity and pressure).
- Never change a sensor in a potentially hazardous atmosphere while the transmitter is still powered. Keep cover
tight when circuits alive.
- The time of response of the entire system is determined by the time of response of all parts of
equipment within the gas detection system.
- The EU type examination certificate EN 45544 only applies to ST450EC H
2
S. The EU type examination certificate
EN50104 only applies to ST450EC O
2
.
To Next Page
Loading...
