Delta HD2105.1, Operating Manual

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HD2105
- 20 -
V2.3
D
IRECT INPUT INTO
Pt100, Pt1000
AND
N
I
1000 T
EMPERATURE PROBES
The instrument accepts the direct input of Platinum temperature probes with a 100 Ω , 1000 Ω resis-
tance and Nickel temperature probes with a 1000 Ω resistance.
The Pt100 are connected to 4 wires, the Pt1000 and Ni1000 to 2 wires, with the excitation current
chosen minimizing the sensor self-heating effects.
All probes with SICRAM module are calibrated in the factory; the 2 or 4-wire probes with direct
input are
checked for conformity with class A tolerance according to norm IEC751 - BS1904 -
DIN43760.
The probes with SICRAM module are detected by the instrument; the model configuration is re-
quired for the other probes (please see the description of the Probe Type menu item on page 12).
The °C or °F unit of measurement can be chosen for display, printing, and logging using the °C/°F-
ESC key.
How to measure
The temperature measurement by immersion is carried out by inserting the probe in the liquid for at
least 60mm; the sensor is housed in the end part of the probe.
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 HD2105.1 and HD2105.2 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 TP47 module are provided below.
The module is supplied complete with fairlead and gasket for 5mm maximum diameter cables.