HND-F215
page 22
HND-F215 K07/0522
7.13 Error and System Messages during HND-FF31 Calibration
Display Description
Remedy
Cal
Err.1
Deviation too high (zero point)
correct humidity variable?
no -> probe no longer within permissible tolerances,
return to manufacturer for recalibration.
Cal
Err.2
Difference point1-point2 too small
difference has to be at least 40% if values are
entered manually select suitable values
Cal
Err.3
Incorrect temperature
calibration is only permissible in the temp. range
from 5 ... 40°C
8. Maintenance
When to replace battery
If and ´bAt´ are shown in the lower display the battery has been used up and
needs to be replaced. The device will, however, operate correctly for a certain
time. If ´bAt´ is shown in the upper display the voltage is too low to operate the
device; the battery has been completely used up.
Please note: The battery has to be taken out, when storing device
above 50 °C. We recommend taking out battery if device is not
used for a longer period of time.
9. Technical Information
Measurement
input: humidity/temperature:
external probe HND-FF31
(see datasheet probe)
Flow: external probe
HND-FF32/33 (see datasheet probe)
(additional temperature input:
NiCr-Ni thermocouple element, type K)
Measuring range:
relative humidity: 0.0...100.0 % rH
room temperature: -40.0...+120.0 °C
(like probe HND-FF31)
surface temperature:
-80.0...+250.0 °C
flow speed:
see probe HND-FF32/33
