Detcon DM-700 SIL 2 Safety Manual - Manual

SAFETY MANUAL
SIL 2 Certified Model DM-700 Toxic Gas Sensor
Version 3.0
1 SAFETY CERTIFIED MODEL DM-700 TOXIC GAS DETECTOR
This manual addresses the specific requirements and recommendations applicable to the proper installation, operation, and
maintenance of all Safety-Certified (SIL-Certified) DM-700 sensors. For complete information regarding performance,
installation, operation, maintenance and specifications of the Model DM-700, refer to instruction manual Document
#3207.
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 DM-700 Gas Detector is intended for use in hazardous environments that may include dangerous levels of toxic gas
vapors. This product must be properly installed, operated and maintained. Improper installation or use could result in
death or serious injury.
If applicable, do not remove the XP Junction box cover in explosive environments when device power is on and circuits
are live.
Detector must be properly installed, and XP junction box cover must be fully engaged to meet hazardous area explosion-
proof/non-incendive requirements.
3 DESIGN
The Model DM-700 is an electrochemical type toxic gas detector that is classified as a Type B smart device according to
IEC61508. The DM-700 sensor provides a 4-20 mA output that is proportional to toxic gas vapor concentrations in the
ranges of 0-1 ppm up to 0-10000 ppm. The DM-700 contains extensive self-diagnostics and is programmed to send the