Detcon IR-700 - Manual (Page 9)

Model IR-700
IR-700 Instruction Manual Rev. 3.1 Page 5 of 40
2. Installation
2.1 ATEX Operational Guidelines for Safe Use
1. Install sensor only in areas with classifications matching with those described on the ATEX approval
label. Follow all warnings listed on the label.
Figure 8 ATEX Approval Label
2. Ensure that the sensor is properly threaded into a suitable explosion-proof rated junction box with a
downward pointing female ¾” NPT threaded connection. The sensor should be threaded up at least 5
full turns until tight, with the LED display facing forward. Avoid use of Teflon Tape, or any type of
non-conductive pipe thread coating on the NPT threaded connection.
3. A good ground connection should be verified between the sensor’s metal enclosure and the junction
box. If a good ground connection is not made, the sensor can be grounded to the junction box using
the sensor’s external ground lug. Also verify a good ground connection between the junction box and
earth ground. Installer shall use ring terminal to make connection to earth ground to be secured by
screw and lock washer on sensor housing.
4. Ensure that the Housing Bottom and plug-in sensor are installed during operation. The Housing
Bottom should be threaded tightly to the Intelligent Transmitter Module. The locking setscrew (M3.5
x 0.6 6g6h Stainless Steel Allen set screw cup point with yield strength of greater than 40,000 PSI,
typical 80,000 PSI) should then be tightened down to keep the Housing Bottom from being
inadvertently removed or from becoming loose under vibration. The locking setscrew ensures that
Housing Bottom is only removable by authorized personnel with the use of special tools. A M1.5
Allen Wrench is required. If screw requires replacement, only an identical screw may be used.
5. Removal of the Housing Bottom violates the Ex d protection method and hence power must be
removed from the sensor prior its safe removal.
6. The screws holding down the retaining plate label are special fasteners of type Stainless Steel, Phillips
Pan-head Machine screw, M3 x 0.5 6g6h having yield strength of greater than 40,000 PSI, typical
80,000 PSI. If screw requires replacement, only an identical screw may be used.
7. Proper precautions should be taken during installation and maintenance to avoid the build-up of static
charge on the plastic components of the sensor. These include the splashguard and splashguard
adapter.
8. Do not operate the sensor outside of the stated operating temperature limits.
9. Do not operate the sensor outside the stated operating limits for voltage supply.
10. These sensors meet EN60079-0:2009, EN60079-1:2007.