Ascon Tecnologic - TRH200 - USER MANUAL - PAG. 1
TRH200
RELATIVE HUMIDITY
MEASUREMENT SENSOR
User manual
22/10 - Code: ISTR_M_TRH200_E_01_--
ASCON TECNOLOGIC S.r.l.
Viale Indipendenza 56, 27029 - VIGEVANO (PV) ITALY
TEL.: +39 0381 69871 - FAX: +39 0381 698730
sito:
http:\\www.ascontecnologic.com
e-mail:
PREFACE
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This manual contains the information necessary for the
product to be installed correctly and also instructions for
its maintenance and use; we therefore recommend that
the utmost attention is paid to the following instructions
and to save it.
This document is the exclusive property of Ascon Tecnologic
S.r.l. which forbids any reproduction and divulgation, even par-
tially, of the document, unless expressly authorized.
Ascon Tecnologic S.r.l. reserves the right to make any formal or
functional changes at any moment and without any notice.
Ascon Tecnologic S.r.l. and its legal representatives do not
assume any responsibility for any damage to people, things or
animals deriving from violation, wrong or improper use or in
any case not in compliance with the instrument features.
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Whenever a failure or a malfunction of the device may
cause dangerous situations for persons, thing or animals,
please remember that the plant has to be equipped with
additional devices which will guarantee safety.
1. INSTRUMENT DESCRIPTION
1.1
General description
The probes of the
TRH200
series are devices with 4 ÷ 20 mA
current output for monitoring relative humidity characterized
by a very low energy consumption.
The
TRH200
uses a high-precision sensor and its conver-
sion / retransmission devices are of quality to ensure high
reliability and excellent long-term stability.
2. USAGE WARNINGS
2.1
Admitted usage
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The instrument has been projected and manufactured
as a measuring and control device to be used accord-
ing to EN60730-1 at altitudes operation below 2000 m.
Using the instrument for applications not expressly permitted
by the above mentioned rule must adopt all the necessary
protective measures.
The instrument
must not be used
in dangerous environ-
ments (flammable or explosive) without adequate protections.
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The installer must ensure that the EMC rules are
respected, also after the instrument installation, if
necessary using proper filters.
3. INSTALLATION WARNINGS
3.1
Mounting requirements
Select a mounting location having the following characteristics:
• It should be easily accessible;
• It must not be subjected to vibrations or impacts;
• Must be free from corrosive gases;
• Must be free from water or other fluids (condensation).
3.2
Installation position
Wall fixing is done by clips. Particular attention must be paid
to the sensor positioning, it must be kept away from heat
sources that can influence the humidity measurement.
It is a good idea to mount the probe with the sensor facing
downwards (output cable upwards) and
NEVER
with the
sensor facing upwards and also horizontally to avoid possi-
ble measurement errors due to self-heating.
NO
OK
NO
BEST
Cable
Any error in humidity measurement may be due to the settling
time of the probe, in this case it will be necessary to wait for
the time necessary to achieve a stable measurement.
Steam jets, water sprays, drafts, direct sun exposure, conden-
sation on the sensor or mounting on a wall made cold by the
outside temperature can also cause important measurement
errors; due to these conditions, during the installation, the
probe must be protected from any possible external influence.
Содержание TRH200
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