18
AR004525
Four-channel thermometer
for external probes
This model can measure up to four temperature
values transmitted by Pt1000/E series external probes.
The response to a temperature jump depends
on the connected probe design. As a rule, this model
is few times faster than that using the inner sensor. It is
often used to monitor locations where the device itself
is not directly in the measuring space and only probes
are in. The maximum length of each probe lead should
not exceed 15 m. It is recommended to use shielded
cables. To maintain the IP rating, the unused probe
connectors should be provided with a supplied closing
cap.
AR006088
Compact thermometer -
hygrometer
This model is designed to measure temperature,
relative humidity and dew-point temperature by internal
sensor, no additional probes or sensors can be
connected. It is characterized by a simple and compact
design and a relatively long response to a temperature
and humidity jump, compare to model with external
probes. The sensors are located under the grid
on the front of the unit and are protected with Teflon foil.
Foil permits water vapour but prevents water from
permeating the liquid state. The device is suitable
for measuring in places where there is no rapid change
in temperature or relative humidity, and there is
no condensation of water vapours. If water vapour
condensation
occurs
inside
the
datalogger,
then the resulting water will remain there and may
damage its electronics. The device is placed directly
in the measured space, while the installation needs to
ensure sufficient level of GSM signal at the installation
location. As the internal battery creates a parasitic heat
during the charging period, the measurement accuracy
may be affected by up to 1 º C.
The calibration of this
instrument in the laboratory is recommended with the
open bottom part of the battery box, to allow airflow from
Summary of Contents for AR003954
Page 5: ...5 Datalogger AR004525 model...
Page 59: ...59 Dimensions AR006087 AR005348 AR005892...
Page 60: ...60 AR004525 AR006088 AR003954...
Page 61: ...61 AR006089 AR006090...
Page 62: ...62 AR006092 AR006779 AR006091...
