8 • 35-3001A-14 Methane Sample-Draw Detector
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 4).
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 inch screws through the slots in the mounting feet to secure the housing to the mounting
surface.
Connecting the Sample Lines to the Sample-Draw Detector
See Figure 6 for the fitting layout.
Installing the Inlet Line with Particle Filter Connected to the Inlet Fitting
1. Loosen the nut on the inlet fitting until 3 threads are visible.
2. Push the particle filter’s tubing stub into the inlet fitting until it stops. Be sure the arrow on the
particle filter is pointing toward the inlet fitting.
3. Hand tighten the nut on the inlet fitting so the ferrules clamp on the tubing. If the tube nut is removed,
see Figure 6 for the arrangement of the fitting components.
4. Connect a length of sample tubing to the other side of the particle filter and route it to the sampling
area. 1/4” O.D. rigid polypropylene, Teflon, or flexible polyurethane tubing may be used. RKI
Instruments, Inc. recommends using either 1/4” O.D. x 1/8” I.D. or 1/4” O.D. x 0.170” I.D. tubing
based on your length requirements. See “Specifications” on page 1 for maximum tubing lengths
based on tubing size.
CAUTION:
If you use flexible sample tubing (polyurethane is acceptable), use an appropriate
insert if necessary to provide support to the tubing and ensure a good seal when
connecting to the flexible stub on the filter.
CAUTION:
Avoid loops or slumps in the incoming sample line. To reduce response time, keep the
incoming sample line as short as possible.
Installing the Inlet Line without Particle Filter Connected to the Inlet Fitting
1. Loosen the nut on the inlet fitting until 3 threads are visible.
2. Push 1/4” O.D. rigid polypropylene or rigid Teflon sample tubing into the fitting until it stops.
Flexible polyurethane tubing may be used with an appropriate insert. RKI Instruments, Inc.
recommends using either 1/4” O.D. x 1/8” I.D. or 1/4” O.D. x 0.170” I.D. tubing based on your
length requirements. See “Specifications” on page 1 for maximum tubing lengths based on tubing
size.
CAUTION:
If you use
flexible
sample tubing (polyurethane is acceptable), use an appropriate
insert to seal the connection between the tubing and the inlet fitting.
