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5.
PROBES
AND
MEASUREMENTS
You can connect the thermocouple temperature probes of
type K, J, T, N, R, S, B and E to the
HD32.8.8
and
HD32.8.16
dataloggers
. The selection is done using the
▲▼
arrows (see chapter 3.
OPERATION).
The contacts of the thermocouple probe connector are polarized. They must be inserted on the
standard miniature socket located on the instrument in the correct direction. These probe positive
pole is usually marked with a "+" sign, as shown in the following drawing.
The user can choose the unit of measurement for display, printing and logging among the allowed
ones: °C, °F or °K.
All used probes must be the same type of thermocouple:
VTRAP32K
A tripod, code VTRAP32, is available for the
measurements. Adjustable height up to 1.50
meters, complete with head that can host up to 6
measurement probes. The same tripod can be
used to support the measurement instrument
during data capture.
The arms fitted with suitable clamps for the
measurement probes can be inserted in the head,
code
HD3218K
.
The
VTRAP32K
kit is composed of a tripod,
code
VTRAP32
,
and
5
arms, code
HD3218K.
The instrument is supplied with a belt that is
fastened to the two pull buttons on the instrument
side. Using this belt, the instrument can be
hanged on a hook or worn around the neck. Code
HD32CS
.
5.1
T
EMPERATURE
M
EASUREMENT
In all versions the thermocouple hot junction 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. The response times are longer than those for liquid
measurements.