Comet IoT Sensor plus W0841, Инструкция по эксплуатации

Страница: 17 / 31

ie-wfs-Wx8xxPlus-01
17
Application notes
Operation of transmitter in various applications ___________
Prior to commissioning, it is first necessary to assess whether its use is
appropriate for the purpose, to determine its optimum setting and, if it is
part of a larger measuring system, to prepare a metrological and functional
control.
Inappropriate and risky applications: The transmitter is not intended for
applications where the failure of its operation could directly endanger the
lives and health of persons and animals or the function of other devices that
support life functions. For applications where failure or malfunction could
result in serious property damage, it is recommended that the system be
supplemented by a suitable independent signalling device that evaluates
this status and, in the event of a malfunction, prevents the damage (see
chapter
Safety precautions and forbidden handling ).
Device location: Follow the guidelines and procedures in this manual. If
possible, select the location for the device where it is minimally affected by
external environmental influences. If you perform measurements in fridges,
metal boxes, chambers, etc., place the device outside the exposed area
and insert external probe(-s) only.
Location of temperature sensors: Place them in places where there is
sufficient airflow and where you anticipate the most critical location
(according to application requirements). The probe must be sufficiently
inserted or otherwise sufficiently connected to the measured area to
prevent any influence of the measured values by the undesirable heat
supply on the wires. If you monitor the temperature in the air-conditioned
store, do not place the sensor in the air conditioner direct flow. E.g. in large
chamber refrigerators, the distribution of the temperature field can be very
inhomogeneous, deviations may reach up to 10 ° C. You will also find the
same deviations in the deep-freeze box (e.g. for blood freezing, etc.).
The location of the humidity sensors depends again on the application
requirements. It is very problematic to measure moisture in refrigerators
without moisture stabilization. Switching on / off cooling may cause
significant changes in humidity to a range of tens of percent, even if the
humidity mean value is correct. Humidity condensation on the walls of the
chambers is common.
Measurement of calculated humidity variables _____________
The instrument from the calculated humidity variables only provides the
dew point temperature. Further calculated humidity quantities can be
obtained at the level of further data processing in SW.