Hanna Instruments HI520 - Page 83

83 Functioning Modes & Process Variables
Default values
Probe type
Controller setting pH ORP DO EC Temperature
Alarm High Probe maximum range
Alarm Low Probe minimum range
Set point 8.00 pH 500 mV
DO
_
Conc: 8.26 mg/L
DO
_
Sat:100 %
sal %: 200 %
EC: 10.00 mS/cm
25 °C (77 °F)
Hysteresis for
ON/OFF Control
1.00 pH 50 mV 5.0 %Sat 1.000 mS 3.0 °C (37 °F)
Deviation for
Proportional Control
1.00 pH 50 mV 5.0 %Sat 2.000 mS 3.0 °C (37 °F)
Analog output Parameter Ctrl. Setpoint 1
Analog output 0 mA limit – 100 %
Analog output 20 mA
limit
200 %
Fixed value for
AO Hold mode
50 % 50 % 50 % 50 % 25 °C (77 °F)
Operational overview mode
LED status legend
STATUS HOLD
CC
Measure mode
CC
Warning
CC
Errors
S
Alarms
C C
HOLD Off
C C
HOLD On