110 HART Communications
Section 10: HART Communication Instruction Manual
April 2017 LIQ-MAN-1066
1066 pH/ORP continued
Type Enumeration / Range
Read/Write
Default
pH_display_resolution
Changes the resolution of the displayed pH value.
ENUM 0.01 pH
0.1 pH
R / W 0.01 pH
pH_sensor_isopotential
The pH at which the millivolt output of the pH sensor remains
constant with temperature changes; virtually always 7.00 pH.
FLOAT 0.00 -- 14.00 pH R / W 7.00 pH
refZ_high_fault_setpoint
The high setpoint that triggers a reference electrode
mpedance alert.
FLOAT 0.0 -- 9,999.0 kohm R / W 500.0 kohm
glassZ_high_fault_setpoint
The high setpoint that triggers a glass pH electrode impedance
alert.
FLOAT 0.0 -- 9,999.0 Mohm R / W 1,500 Mohm
diagnostics_switch
Turns the glass and reference electrode impedance
measurements on and off.
ENUM Off
On
R / W Off
glassZ_temperature_correction
Turns temperature correction of the glass impedance
measurement on and off.
ENUM Off
On
R / W Off
glassZ_measurement_type
Toggles between a basic glass impedance measurement, and
an advanced impedance measurement that is more accurate.
ENUM Advanced
Basic
R / W Advanced
calculated_offset
The preliminary zero offset calculated by a pH
calibration before it is accepted by the transmitter.
FLOAT R / W
calculated_slope
The preliminary slope calculated by a pH calibration before it is
accepted by the transmitter.
FLOAT R / W