Product Overview

IMMERSION WELLS AND COMPRESSION FITTINGS
68-0040—05 10
NOTE: The spring clip does not hold the capillary as
securely as does the mounting clamp. See Table 5
for spring clip part numbers.
1. Slide the clip over the capillary with the prongs facing
the well.
2. Push the clip as far as possible into the spud. See Fig.
6.
NOTE: Make sure the bulb remains bottomed in the well.
Fig. 6. Mounting spring clip into well spud.
Securing Bulb in Wells with Setscrew
Wells with a spud setscrew are designed for use with
controllers that have armored capillary with a brass collar at
the bulb end of the armor. The setscrew tightens against the
brass collar. See Fig. 7. These wells can be adapted for use
with 5/64 in. capillary by adding the 124904 Well Adapter and
the 121371 Mounting Clamp Assembly. See Fig. 3.
Fig. 7. Mounting armored capillary in well with setscrew.
Capillary Compression Fittings
1. Coat external spud threads with a moderate amount of
pipe dope, leaving two end threads bare. See Fig. 4.
NOTE: Teflon tape can also be used.
2. Screw the spud into the tapping and tighten securely.
3. Place the packing nut on the tubing.
4. Slide the bulb completely through the fitting.
5. Place the composition disk and the four slotted brass
washers on the tubing in the order shown in Fig. 8.
6. Turn the brass washers so that the slots are 180
degrees apart and the small tabs are in the mating
slots.
7. Slide the seal assembly into the fitting. Make sure the
sensing bulb extends the desired distance into the
controlled medium. See Fig. 2.
8. Tighten the packing nut.
Fig. 8. Capillary compression fitting assembly.
Element Holders
Use element holders to mount air temperature sensors in a
duct. Locate the sensing element where air at representative
temperatures can circulate around it. In a plenum application,
locate the element far enough from the combustion chamber
to avoid the effect of direct radiation.
Bulb Holders
1. Cut a hole large enough to admit the bulb and holder in
the duct or plenum at the mounting location.
2. Drill holes for the bulb holder mounting screws.
3. Mount the bulb and capillary on the holder. See Fig. 9
through 11.
107324A and 131524A Bulb Holders
Use these bulb holders to mount one bulb in a duct or
plenum. See Fig. 9 and 10. If necessary, shorten holders by
using pliers to flex the channel at one of the notches until it
separates.
311266D Bulb Holder
Use this bulb holder to mount one or two bulbs in a duct
where temperatures do not exceed 100°F (38°C). The
removable plug in the mounting plate allows insertion of a
thermometer to check duct air temperature. See Fig. 11 for
installation details.
M17263
BULB
INSERTION LENGTH
APPROX. 3-3/8 IN.
TUBING SPRING CLIP
FITTING (INCLUDING WELL)
M17264
1/2 in. (13 mm) PIPE THREAD FOR 1/2 in. (13 mm) CAPSULES
3/4 in. (19 mm) PIPE THREAD FOR 11/16 in. (17 mm) CAPSULES
COMPOSITION DISK
(SLOTTED)
SPUD
CAPILLARY TUBING
SLOTTED WASHERS
ASSEMBLED IN PAIRS
THUS-
PACKING NUT
M17258