Detcon TP-700 SIL 2 Safety Manual - Manual

SAFETY MANUAL
SIL 2 Certified Model TP-700 H2S Gas Sensor
Version 5.0
1 SAFETY CERTIFIED MODEL TP-700 H2S GAS DETECTOR
This manual addresses the specific requirements and recommendations applicable to the proper installation, operation, and
maintenance of all Safety-Certified (SIL-Certified). For complete information regarding performance, installation,
operation, maintenance and specifications of the Model TP-700, refer to instruction manual Document #3150.
2 SAFETY MESSAGES
Procedures and instructions in this section may require special precautions to ensure the safety of personnel performing
the operations. Information that raises potential safety issues is indicated by the word “Warning”. Always read and
understand these safety messages.
Warning:
The TP-700 Gas Detector is intended for use in hazardous environments that may include dangerously levels of toxic H2S
gas vapors. This product must be properly installed, operated and maintained. Improper installation or use could result in
death or serious injury.
Do not remove the XP Junction box cover and/or do not remove the sensor bottom housing (required to change out the
plug-in MOS H2S sensor) in explosive environments when device power is on and circuits are live.
Detector must be properly installed, and XP junction box cover and sensor bottom housing must be fully engaged to meet
hazardous area explosion-proof/non-incendive requirements.
3 DESIGN
The Model TP-700 is a mixed metal oxide semiconductor type H2S gas detector that is classified as Type B smart device
according to IEC61508. The TP-700 sensor provides a 4-20 mA output that is proportional to H2S vapor concentrations in
the ranges of 0-20 ppm, 0-50 ppm, 0-100 ppm, and 0-200 ppm. The TP-700 contains extensive self-diagnostics and is