Murphy 45TE Manual Do Utilizador

SPL-92106N page 3 of 4

Precautions
Cutting or sharp bending the capillary will cause permanent damage
to the SWICHGAGE

®

and will void the warranty. Excess capillary

should be carefully coiled and secured away from damage. Do not
route capillary along exhaust manifold. Avoid routing capillary at a
level higher than gage mounting.

1. Install the 

1

/

2

NPT adapter into the

application. 

2. Slip compression nut and ferrule

onto bulb. 

3. Insert the sensing bulb directly

through the adapter and fully
immerse it into the  process without
interference. Be sure to leave enough of
the bulb to allow the compression nut and
ferrule to be tightened. 

4. Keep the bulbs active section in the middle of the process flow. 
5. Tighten the compression nut and ferrule. This will keep the 

bulb in place and obtain a full seal.

100

0

500

800

6 in.

(152 mm)

transmitting 
tube or
capillary

Sensing
 bulb 
insertion

compression
 nut

active 

section of 

sensing bulb

Wall

SWICHGAGE®

Adapter

Limit Contact Adjustments
Facing the dial, left side knob is “Low limit” contact. Right side is
“High limit” contact.
NOTE: the 45TE Series features a stacked 
limit indicator knob with both limit adjust-
ments included. The bottom half knob 
adjusts the “Low” limit indicator, the top
half is to adjust the “High” limit indicator.

To set limit contact, turn the knob to the
desired point on the scale.

Limit Contact 
Wiping Feature (SPL)
The force of pointer causes the 
flexible contact arm (A) to “tilt” 
resulting in a wiping action (D). 
This clears away film or 
corrosion  formed on the 
contact surfaces.

Indication Pointer Adjustments
To reset to zero or to a known value proceed
as follows:

1. Turn off power. Remove the snap

ring and the lens/contact assembly

(or open hinged cover).

2. Hold the pointer hub with thumb

and forefinger then turn screw to
desired point. Avoid touching the gold
flashed, silver contact areas. 
See DETAIL “A”.

3. Replace lens contact assembly and

snap ring (or close hinged cover),
and turn on power.

SPLC and SPLFC Series
1. Perform operation test after the unit is installed and wired appro-

priately (see Typical Electrical Diagrams on page 4).

2. When temperature is applied to the sensing bulb the pointer will trav-

el in a clockwise direction. (Adjust contacts to desired set points.) 

3. Place the toggle switch (SPLC Series only) in the “start”position

or otherwise override low contact. After the indication pointer
rises past the low limit contact, return the toggle switch to the
“run”position. 

4. To test the limit contacts, turn the limit contact to be tested until it

touches the pointer. That will trip the control circuit.

5. Reset the shutdown or alarm circuit device.

45TE Series
1. Perform steps 1 and 2 in the  SPLC Operation Test Instructions. 

2. To test the switches, turn the limit indicator until it touches the

pointer, then continue to rotate until the snap-switch operates*.

3. Reset the shutdown or alarm circuit device.

*

before the snap-switch operates. As temperature continues to 
increase or decrease, the trip point setting is reached.

A. Contact arm-flex
B. Contact arm
C. Pointer Contact
D. Initial point of contact 
E. Limit contact knob

Turn to lower 
pointer

Turn to raise
     pointer

Turn to 
  lower pointer

Turn to raise
     pointer

Installing Thermowell
Thermowell is recommended for high 
pressure applications or corrosive 
environments. It also allows tempera-
ture sensor to be changed or adjusted
without opening connection to process.

1. First screw the thermowell into the

process (pipe line).

2. Pass the sensing bulb through the

nut and ferrule.

3. Fully insert the sensing bulb into the

thermowell housing and secure it
with the compression nut.