AMC-400 Series Digital Transmitter with Smart Sensor 2
35
2) Enter Configuration from normal operation mode by push and holding pushbutton for
>2seconds and then releasing. The configuration title “
-CF
” will be displayed. Scroll
through to the “
A04
” item with short presses. To begin zero calibration enter the
“
A04
” item with a push and hold >2seconds and release. The zero calibration title “
-
0C
” will be displayed.
3) At this point short press pushbutton to display the Zero Gas Concentration. If the
zero gas concentration is to be modified then push and hold for >2seconds and
release. The gas concentration can be modified one digit at a time similar to
MODBUS address modification in INITIAL CONFIGURATION. Once all digits have
been modified another short press will advance procedure to the gassing phase. The
AMC-400 Digital transmitter may ignore modifications if the gas concentration
entered is not acceptable.
4) At the beginning of zero calibration the AMC-400 Digital Transmitter will display
“
GaS
” “
On
”. Begin gassing at this point to perform a T99 type calibration. The
qualified personnel can begin gassing after this point to perform a T90 type
calibration by advancing the procedure to measurement phase with a press of the
pushbutton.
5) During zero gassing measurement the display will indicate either “
Inc
” or “
dEc
”
depending of signal level from sensor increasing or decreasing respectively. Also the
LCD will display the sensor voltage when the gas concentration is not changing. The
measurement phase contains a minimum and maximum gassing period and will
automatically complete after gas measurement is stable. Proceed to calibration
complete by pressing the pushbutton.
6) During zero calibration complete the AMC-400 Digital Transmitter will display “
GaS
”
“
OFF
”. At this point the qualified personnel must accept or reject this calibration by a
push and hold >2seconds or short press respectively. If the accept is given the AMC-
400 Digital Transmitter will check the limits of the result and accept or reject it by
displaying “
Acc
” or “
bAd
” respectively. If result has been rejected the LCD will
indicate “
bAd
”.
7) The zero calibration title “
-0C
” will be re-displayed for retry or exit. Push and hold
and release to exit. Scroll through to the “
A05
” item with short presses. To begin
span calibration enter the “
A05
” item with a push and hold >2seconds and release.
The span calibration title “
-SC
” will be displayed.
8) At this point short press pushbutton to display the Span Gas Concentration. If the
span gas concentration is to be modified then push and hold for >2seconds and
release. The gas concentration can be modified one digit at a time similar to
MODBUS address modification in INITIAL CONFIGURATION. Once all digits have
been modified another short press will advance procedure to the gassing phase.
AMC-400 Digital transmitter may ignore modification if the gas concentration entered
is not acceptable.
