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In the temperature measurement by
penetration
the probe tip must be inserted to a depth of at least
60mm, the sensor is housed in the end part of the probe. When measuring the temperature on frozen
blocks it is convenient to use a mechanical tool to bore a cavity in which to insert the tip probe.
In order to perform a correct
contact
measurement, the measurement surface must be even and
smooth, and the probe must be perpendicular to the measurement plane.
So as to obtain the correct measurement, the insertion of a drop of oil or heat-conductive
paste is useful (do not use water or solvents). This method also improves the response time.
Instructions to connect the TP47 connector for 4-wire Pt100, Pt1000 and Ni1000 probes
All Delta Ohm probes are provided with a connector. The HD21...4.0 and HD21...4.2 instruments
also work with direct 4-wire Pt100, Pt1000 and Ni1000 probes manufactured by other producers;
for the instrument connection is prescribed the TP47 connector to which the probe's wires should be
welded.
The instructions to connect the Platinum or Nickel probe to the module are provided below.
The module is supplied complete with fairlead and gasket for 5mm maximum diameter cables.
Do the following to open the module and connect a probe:
Unscrew the fairlead and extract the gasket, remove the label using a cutter, unscrew the ring on the
opposite side as illustrated in the figure:
Open the two module shells: the printed circuit to which the probe must be connected is housed
inside. On the left there are the 1…4 points on which the sensor wires must be welded. The
JP1…JP4 jumpers are in the center of the board. These must be closed with a tin bead for some type
of sensors:
1
2
3
4
Pt100 3 wires
Pt1000
Ni1000
Not Used
Before welding, pass the probe cable through the fairlead and gasket.
