RKI Instruments 35-3000RKA-H2S - Manual (Page 7)

Sample-Draw Hydrogen Sulfide Gas Detection • 7
2. Close and latch the housing door.
NOTE: The sample-draw detector is shipped with the mounting feet “tucked under” the
housing to protect the mounting feet during shipment.
3. Slightly loosen the screw that secures the mounting foot to the housing, then rotate
the mounting foot 180 degrees (see Figure 3).
4. Tighten the screw that secures the mounting foot to the housing.
5. Repeat steps 3 and 4 for the remaining three mounting feet.
6. Position the sample-draw housing on a vertical surface at eye level (4 1/2 to 5 feet
from the floor).
7. Insert 1/4 in. or 5/16 screws through the slots in the mounting feet to secure the
housing to the mounting surface.
Connecting the Sample Lines to the Sample-Draw
Hydrogen Sulfide Gas Detector
1. Attach 1/4 in. O.D. stainless steel, rigid teflon, or rigid polypropylene sample tubing
to the INLET fitting.
CAUTION: If you use flexible sample tubing (polyurethane is acceptable), use an appropriate
metal insert to seal the connection between the tubing and the INLET fitting. See
Appendix A, Parts List, for an example of an appropriate metal insert.
2. Place the opposite end of the tubing at the sampling area.
CAUTION: Avoid loops or slumps in the incoming sample line. To reduce response time, keep the
incoming sample line as short as possible.
3. Attach rigid sample tubing to the EXHAUST fitting.
4. Route the opposite end of the tubing to an open area where the sample can safely
disperse.
Wiring the Sample-Draw Hydrogen Sulfide Gas Detector
WARNING: Always verify that the power source is OFF before you make wiring
connections.
1. Unlatch and open the housing door of the sample-draw detector.
2. Guide a three-conductor, shielded cable or three wires in conduit through one of the
conduit hubs at the bottom of the sample-draw housing.
3. Connect the cable to the sample-draw detector’s interconnect terminal strip as shown
in Figure 4.
4. Close and latch the housing door of the sample-draw detector.
CAUTION: Leave the shield cable insulated and disconnected at the sample-draw detector.
You will connect the opposite end of the shield cable at the device.