OPERATING INSTRUCTIONS
METEODIGIT IV (9164)
7
8.1.1 Sensors
All METEODIGIT IV-sensors usually have the measur-
ing range and units already programmed and can thus
be connected to any input socket without further ad-
justment. A mechanical coding system ensures that
sensors and output modules can only be connected to
the correct sockets. All connectors incorporate two
snap-lock levers; these snap into position as soon as
the connector is inserted into the socket, thus prevent-
ing unintended disconnection if the cable is accidentally
pulled. To withdraw the connector, both these levers
must be pressed in at the sides.
8.1.2 Measuring inputs and additional
channels
The measuring instrument has 1 input socket
1
, to
which initially measuring channel M0 is assigned. Sev-
eral sensors can, however, if necessary, provide up to 4
channels. The additional channels are mainly usable for
humidity sensors with 4 measuring parameters (tem-
perature/ humidity/ dew point/ mixing ratio) or for func-
tion channels.
9. DISPLAY AND KEYPAD
9.1.1 Display
The display
2
of the METEODIGIT IV is a 2-row LCD
arrangement; the main field comprises 5x 7-segment
digits (e) plus 2x 16-segment digits (d) for depicting the
measured value; the function field comprises 4½ 7-
segment digits (b) for depicting various measuring func-
tions (a); there are also 4 arrows (f) for depicting the
operating status.
Function field
Æ
Main field
Æ
Display of measuring functions in the function field
Measuring point:
Maximum value:
Minimum value:
Saved value:
Memory capacity:
Temperature value from double sensors:
Configuration of locking:
Configuration of automatic off:
Special operating states and faults
Display segment test:
Runs automatically after switch ON
Supply voltage:
Display after segment test
Supply voltage under 3.6 V:
Arrow
lights up
Relative measuring with respect to a reference value:
Arrow
lights up
Sensor correction or scaling:
Arrow
lights up
Unlocked to enable sensor adjustment:
Arrow
lights up
Checksum error in device calibration:
Non-connected sensors; deactivated measuring points:
Measuring range / function not permitted:
Overshoots value range (>65000):
flashes
Overshoots measuring range:
Maximum value flashes
Undershoots measuring range:
Minimum value flashes
9.1.2 Keypad
To operate the device a keypad with 7 keys is provided:
Function:
Key
To switch ON the device:
ON OFF
To switch OFF the device:
ON OFF
Must be pressed
and held down
Measuring points selection:
M
▲
or
M
▼
Displaying the maximum value:
MAX
To delete press
and hold down
Displaying the minimum value:
MIN
To delete press
and hold down
Zero-setting the measured value:
CLR
To delete press
and hold down
Saving the measured value:
MEM
Displaying the battery voltage:
ON OFF
