ThermoProbe TP7-D Instrucciones Para El Usuario página 6

Probe Types
The TP7-D or TP9-A can use either 2-wire or 3-wire probe assemblies.
ThermoProbe replacement probe assemblies are available in different configurations. The cable length is available in
lengths up to 50 meters or 165 feet. Standard brass markings are available applied in 5 feet or 1 meter increments. The
sensors are available with 4 weight types. The probe assembly part configurations are as follows:
REPLACING THE PROBE ASSEMBLY
NOTES:
1) Replacement of the probe assembly requires re-calibration of the device. Replacement should only be
done by experienced personnel and if calibration equipment is available.
2) Please refer to IEC/EN 60079-19 (Explosive atmospheres - Part 19: Equipment repair, overhaul and
reclamation) when making the repair.
3) Only use replacement probe assemblies obtained from ThermoProbe, Inc. or one of its authorized
distributors.
a) First follow REPLACING BATTERY instructions a through c to remove batteries.
b) On the circuit board push the terminals clamps down and remove the wires noting the wire lead color code
arrangement. See Figure 1.
White – positive sensor wire
Green – cable compensating wire (not used on 2 wire models)
Silver – negative sensor wire & shield wire
c) Set the cover and circuit board aside and remove the strain relief knot in cable assembly.
d) Unwrap the cable from the assembly and pull the cable free of the rubber grommet.
e) Insert the new cable wire through the rubber grommet and then pull several inches of cable past the grommet.
f) Tie a simple overhand knot in the cable at the grommet for strain relief and pull the knot up to the grommet.
g) On the circuit board, push the terminal clamp levers down and insert the new wire leads according to the terminal
color codes. The label indicates how to connect a 2 wire probe vs. a 3 wire probe (includes green wire). See Figure 1.
h) Reinstall the batteries and cover and re-spool the cable assembly.
i) Perform a calibration (see calibration procedure).
Figure 1: Probe Assembly Lead Attachment
10/2017, JK