DeFelsko PosiTector Dew Point Meter Logger Plus Bedienungsanleitung Seite 12

Troubleshooting
Most PosiTector DPM L+ conditions can be corrected by installing
a fresh set of AAA batteries.
In the rare event the probe becomes unresponsive, with the probe
powered ON, press and hold the power button for approximately 30
seconds. The LED indicator will first turn solid red, and then will
begin flashing red rapidly, at which point the button can be released,
and the probe will perform a factory reset.
The PosiTector DPM L+ Probe does not appear in the
PosiTector App: Check the batteries in the probe and replace if
required. Ensure that when the power button inside the cap of the
PosiTector DPM L+ is pushed the LED turns Solid White. Ensure
Bluetooth is enabled on the Smart device running the PosiTector
App.
NOTE: Only probes within 10 m (30 ft) will be visible.
When the surface temperature probe is not on a surface, Air
Temperature (Ta) and Surface Temperature (Ts) appear to be
different: Under normal conditions with the surface probe in air, Ta
and Ts should be within the combined tolerance of each sensor
(typically 1°C/2° F). The difference may be larger if the surface
probe has recently been in contact with surfaces that are at different
temperatures than air.
RH value is slow to stabilize: If the probe is exposed to very low
humidity for an extended time period and then placed in a high
humidity environment, the displayed Relative Humidity (RH) may
appear to respond slowly. Allow the probe to stabilize for 30 minutes
for a change of RH greater than 50%. It may take longer if the probe
was left at low RH for several months. To increase response time,
wrap the sensor in a damp cloth overnight to recondition the RH
sensor.
Surface Temperature reads much higher than expected: The
probe tip may be dirty or damaged. Use care if attempting to clean
dirt or overspray from the sensor. If the surface temperature
continues to read high, then return the probe for service.
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