Atmospheric pressure compensation
This can be programmed to any measuring channel (command B86, see Man.
6.3.3) and, with abbreviation '*P' in the designation, can even be forwarded for
compensation purposes to the next device. (see Man. 6.3.6) The status of at-
mospheric pressure compensation is displayed both in the atmospheric
pressure function and, for appropriate measured values, in the function field.
(see 11.1.2).
Display indicating that atmospheric pressure (not 1013) is programmed ´P´
Display indicating that atmospheric pressure is being measured´.P´ The dot
flashes
To toggle from programmed value to
measured value in function ´
mb
´ press keys
PROG
,
FCT
14. WIRELESS TRANSMISSION TO DATA LOGGER
Cyclic wireless transmission of maximum four channels to wireless sensor mo-
dule ZA1729-BTFS on an ALMEMO
®
device begins when the cycle starts. (see
13.1)
Data from the sensor is modified as follows :
The original measuring ranges are replaced by the ´
DIGI
´ range; only the units
and designation remain unaffected.
The parameters for measured value correction are already applied in the sen-
sor device and therefore do not need to be transmitted.
Of the maximum eight channels possible with option RHA only the first four are
transmitted. Those channels not required can be deactivated. (see 11.1.1)
If the sensor module is connected at socket M04, channel numbering changes
from e.g. M00, M01, M10, M11 to M04, M14, M24, M34.
In the event of failure affecting the wireless measuring instrument, two cycles
are left to complete and then sensor breakage is reported. Several wireless
sensor links can be operated simultaneously; there is no mutual interference.
Data from all channels is transmitted in its original format via a USB interface
cable.
15. TROUBLE-SHOOTING
The ALMEMO
®
2790 measuring instrument can be configured and program-
med in many different ways. It is suitable for connecting a wide variety of dif -
ferent sensors. Given these numerous possibilities the device may in certain
circumstances not behave quite as expected. The cause of such unexpected
behavior is only very rarely a device defect; usually the cause is incorrect ope-
ration by the user, an invalid setting, or unsuitable cabling. In such event try to
pinpoint and clear the problem with the aid of the following tests.
Error:
No display, display malfunction
Remedy:
Check the power supply; use fresh batteries or connect mains unit
(using rechargeable batteries); switch OFF and then ON again;
if necessary re-initialize.(see 7.5)
ALMEMO
®
2790
25
