Instructions for Use
– SCHMIDT
®
LED Measured Value Display MD 10.015
Page 9
Figure 4: Bidirectional measurement
The measured value display can be configured for two measurement ver-
sions in bidirectional mode:
Version 1
(setting
): Positive and negative flows are displayed. To de-
termine the quantity, the positive flows are summed up and negative flows
are subtracted.
Version 2
(setting
): Positive flows are displayed, negative flows are
suppressed. For determination of quantity, only positive flows are used.
6 Signalizations
Main display
Initially, the main display (see Figure 5) shows the status of the device:
Main display State
Initialization of measured value display
Duration approx. 5 s (after switch-on of supply voltage)
Key lock activated
Error message from
“Sensor 1”
Error message from
“Sensor 2”
Flashing
Displayable range exceeded or undercut
Table 2 Initial status reports
Analog output
If one of the connected sensors indicates an error, the analog output of
the
MD 10.015
will also signal an error:
Signal range without offset (0 ... 20 mA / 0 ... 10 V):
In current mode the interface outputs 0 mA.
In voltage mode the output switches to 0 V.
Signal range with offset (4 ... 20 mA):
The interface outputs 2 mA.
Sensor 1
Sensor 2
Positive flow
Supply
Negative flow
Return
10 x inner tube diameter
