DeltaOHM HD32.1 Operating Manual Download

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HD32.1

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V2.1

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 is the air flow hot side. It should be oriented
toward the hot source (wall/wall ceiling/floor or floor/ceiling).

6.2

ROBES FOR THE

PERATING

ROGRAM

HYSICAL

UANTITIES

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 100

Ω

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.