Ascon tecnologic TRH301, Руководство пользователя

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Ascon Tecnologic - TRH301 - USER MANUAL - PAG. 2
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.
3.3 Electrical Connections
General notes on electrical connections
• The probe cables must be kept separated from high
power voltage wiring.
3.3.1 Electrical wiring
VDC
Out-RH
Control
i
Power supply voltage: 9 ÷ 30 VDC;
Current consumption:
20 mA;
Reverse polarity protection:
Diode.
D The output current is normally passed through the input
resistance of the reading instrument and transformed
into a voltage that can be read by the instrument.
In order to minimize self-heating, this model of probe
uses the “switching mode” technique for controlling the
output current.
4. PROBLEMS AND MAINTENANCE
4.1 Cleaning
We recommend to clean the instrument with a slightly wet
cloth using water and not abrasive cleaners or solvents only.
Should it be necessary to remove the sensor, avoid to me-
chanical stress it and in particular avoid touching the humid-
ity sensor.
4.2 Disposal
The appliance (or the product) must be
disposed of separately in compliance
with the local standards in force on
waste disposal.
5. WARRANTY AND REPAIRS
The instrument is under warranty against manufacturing
flaws or faulty material, that are found within 18 months from
delivery date. The warranty is limited to repairs or to the
replacement of the instrument.
The eventual opening of the housing, the violation of the instru-
ment or the improper use and installation of the product will
bring about the immediate withdrawal of the warranty effects.
In the event of a faulty instrument, either within the period of
warranty, or further to its expiry, please contact our sales de-
partment to obtain authorisation for sending the instrument
to our company.
The faulty product must be shipped to Ascon Tecnologic with
a detailed description of the faults found, without any fees or
charge for Ascon Tecnologic, except in the event of alterna-
tive agreements.
6. TEHNICAL DATA
6.1 Sensor characteristics
Sensor type:
CMOS-C.
6.1.1 Relative humidity
Parameter Condition Min. Typical Max. Units
Resolution
12bit 0.04 %RH
8 bit 0.7 %RH
Accuracy/
Tolerance
Typical ±3.0 %RH
Max. See figure %RH
Repeatability ±0.1 %RH
Hysteresis ±1 %RH
Non-linearity <0.1 %RH
Response time
t
63% 8 s
Operative range Extended 0 100 %RH
Long-term drift Normal <0.5 %RH/year