HND-P105
page 8
HND-P105 K05/0117
7.5.3
P.oFF: Auto Power Off Time
The device will be automatically switched off if no key is pressed/no
interface communication takes place for the time of the power off time.
The power off time can be set to values between 1 and 120 min. It can be
completely deactivated by setting the parameter to ‚P.oFF = oFF“.
7.5.4
Adr: Base Address of Interface
Up to 10 devices of the HND- handheld-family can be connected to a
serial interface at once (depending on interface converter, e.g. HND-P...: 5
devices). To get access to each device the base addresses of the devices
have to be different. For example choose 01 for the first, 11 for the second
device and so on.
7.5.5
OFFS: Adjusting Sensor Zero Displacement
A zero displacement can be carried out for the measured value:
value displayed = value measured - offset
Standard setting: ´off´= 0.0, i.e. no zero displacement will be carried out.
Together with the scale correction (see below) this factor is mainly used to
compensate for sensor deviations. Input is in the display unit.
7.5.6
SCAL: Adjusting Sensor Scale
The scale of the measuring can be influenced by this setting (factor is in %):
displayed value = measured value*(1+Scal/100)
Standard setting: ´off´= 0.000, i.e. value is not corrected. Together with the zero
displacement (see above) this factor is mainly used to compensate for sensor
deviations.
7.6 Measuring Of Water Level – Display Unit [m]
(only for devices with ‚m‘ printed below the display)
When using a suitable waterproof pressure sensor the unit [m] for meters of
water can be set in the menu “Unit“. 10 m of water are roughly 1 bar over
pressure. Measurings can be made e.g. like described below :
With abs. pressure sensor (SL oFF!): Press ‚Tara‘ when sensor is at ambient
air and then bring sensor to the depth to be measured. The display shows now
the depth in [m].
With rel pressure sensor: bring tube connection for lower press. in contact to
ambient air by means of a tube (no water contact!) and bring the sensor with
its open press. connection for higher pressure to water depth to be measured
(display and is compensated for pressure changes in ambient air).
MPa
Pa
bar
mbar
kPa
Tara
AL Logg
SL
PSI
MPa
Pa
bar
mbar
kPa
Tara
AL Logg
SL
PSI
mbar
