Probes For The Operating Program C: Physical Quantities; Robes For The Perating Rogram C: Physical Uantities; Temperature Measurement Using The Probe Pt100 Complete With Sicram Module - DeltaOHM HD32.1 Operating Manual

Thermal microclimate
Table of Contents

Advertisement

TP3227K probe composed of 2 standalone temperature probes, Pt100 sensor and TP3227PC
probe composed of 2 standalone temperature probes, Pt100 sensor:
• Adjustment of the sensors at 1.10 m, 0.60 m and 0.10 m:
Screw the telescopic rod code TP3227.2 L=450mm to the probe TP3227. Once the rod has been
fastened on the clamp, adjust the height to 1.10m for the fixed sensor. The sliding probe should
be placed at 0.60 m from the floor. You should use the combined ankle/floor probe TP3227PC
to perform the measurements at 0.10 m from the floor.
Combined probe for radiant temperature measurement TP3207TR
The face of the probe marked by the symbol
toward the hot source (wall/wall ceiling/floor or floor/ceiling).
6.2 P
ROBES FOR THE

6.2.1 Temperature measurement using the probe Pt100 complete with SICRAM module

The instrument works with temperature probes fitted with the SICRAM module (with a Platinum
Pt100 sensor with 100Ω resistance at 0°C). The excitation current was chosen in order to minimize
the sensor self-heating effects. The SICRAM module acts as an interface between the sensor on the
probe and the instrument. There is a microprocessor circuit with a permanent memory inside the
module that enables the instrument to recognize the type of probe connected and to read its
calibration information.
Upon turning on the instrument automatically detects the probes fitted with SICRAM module:
The probes are detected during turn on, and this cannot be performed when the instrument is
already on, therefore if a probe is connected and the instrument is on, it is necessary to turn it
off and on .
In all versions the temperature sensor is housed in the end part of the probe.
The response time for the measurement of the temperature in air is greatly reduced if the air is
moving. If the air is still, stir the probe back and forth. The response times are longer than those for
liquid measurements.
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. A contact measurement is
hard to perform due to various factors: The operator must be experienced in handling the probe and
consider all the factors influencing it.
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 improves the response time, in
addition to accuracy.
The °C or °F unit of measurement can be chosen for display, printing, and logging.
The sensor is calibrated in the factory, and the Callendar Van Dusen parameters are recorded
in the SICRAM module.
HD32.1
O
P
PERATING
ROGRAM
is the air flow hot side. It should be oriented
C: P
Q
HYSICAL
UANTITIES
- 67 -
V2.1

Advertisement

Table of Contents
loading

Table of Contents