Model 801 EM Current Meter
Page 22
© 2016 Valeport Ltd
6.1.1.2. Method 2 – Reading Raw Real Time Counts
Interrupt the unit using the
#<cr>
command detailed above
Put the EM unit into NOCAL mode [i.e. to output data in raw counts], by entering
#007
“space”
NOCAL <cr>
. Note that each time the unit is interrupted, it automatically goes back into CAL
output mode, so the
#007 NOCAL<cr>
command has to be re-entered.
The output mode can be checked by entering
#030<cr>
and the unit will respond with CAL or
NOCAL as appropriate
Make the unit go into RUN mode by entering
#028<cr>
The unit will output data at 2Hz, and with the sensor in still water, the counts for zero flow can
be observed. Using the terminal emulation programme the data can be captured as a text file
for averaging etc.
6.1.1.3. Setting the New Zero Offset
The new zero offset is entered by the command
#170
“space” zero offset<cr>
in the example above
#170 –1.45<cr>
and is checked by
#172
