(5 The
defined nine HART functions, as below:
F1 dISP_SEnSOr (
) Display pressure range of the sensor in transmitter.
F2 dISP_rAngE (
) Display transmitter's PV range, switch PV units, transfer PV range.
F3 dISP_dAP (
) Display the transmitter's damp time, and adjust it.
F4 dISP_CP-PV (
) Display the calibrator's CP value and transmitter's PV value.
F5 dISP_CP-AO (
) Display the calibrator's CP value and transmitter's AO value
F6 dISP_CA-AO (
) Display calibrator's CA value and transmitter's AO value.
F7 LOOP_AO (
) Fixed analog loop current output, AO calibration process(CALIB_AO).
F8 CALIB_PV (
) PV calibration process.
F9 CALIB_SPEC (
) A special calibration of ADT672, please refer 4.5.9.
F10：CALIB_SENSOR
Sensor trim or digital trim
F11: HArt_5.0
Read the DUT's HART version number
It is the rated pressure of the sensor in transmitter . Over pressure
may damage the sensor.
The operation method is as follows:
a. Switch to HART function
by pressing , as figure 4-5-1-1
b Display the sensor's range by pressing , as figure 4-5-1-2.
c Press to return to figure 4-5-1-1; switch to function 2 by pressing
)
ADT672
:
:
:
:
:
:
:
:
:
1
.
.
.
.
DISPLAY_SENSOR
DISPLAY_RANGE
DISPLAY_DAMP
DISPLAY_CP-PV
DISPLAY_CP-AO
DISPLAY_CA-AO
LOOP AO TEST
CALIBRATE PV
CALIBRATE SPECIAL
CALIBRATE SENSOR
HART 5.0
(
)
(
)
4.5.1 Function 1: Display sensor range
Sensor range:
24V
HART
0
25
50
75
100
Figure 4-5-1-1: F1 entrance interface
40
