- -
18
D
IRECT INPUT INTO
Pt100, Pt1000
AND
Ni1000
TEMPERATURE PROBES WITH
TP47
MODULE
The instrument accepts the input of Platinum temperature probes with resistances of 100
Ω
and
1000
Ω
as well as 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 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, Pt1000 and Ni1000 TP47 module are detected by the instru-
ment; the model configuration is required for the other probes (please see the description of the
Probe Type menu on page 8).
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 module for 4 wire Pt100 probes, Pt1000 and Ni1000
All Delta Ohm probes are provided with a module
TP47. The HD3405.2 also work with direct 4
wire Pt100 probes, 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.
