Swann AMU-II ph/Redox Operator's Manual page 70

AMU-II pH/Redox
Program List and Explanations
5.3.2.400
5.3.2.50
5.3.2.1
5.3.2.22
5.3.2.32
5.3.2.32.1
5.3.2.32.20
5.3.2.32.30
5.3.2.32.4
68
Hysteresis: within the hysteresis range, the relay does not switch.
This prevents damage of relay contacts when the measured value
fluctuates around the alarm value.
Parameter Range: pH sensor
Meas. Value 0.00 pH to +2.00 pH
Temperature 0 °C to +100 °C
Sample flow 0–200 l/h
Delay: Duration, the activation of the alarm relay is retarded after the
measuring value has risen above/fallen below the programmed alarm.
Range. 0–600 sec
Function = Control upwards/downwards:
The relays may be used to drive control units such as solenoid
valves, membrane dosing pumps or motor valves. When driving a
motor valve both relays are needed, relay 1 to open and relay 2 to
close the valve.
Parameter: Choose on of the following process values.
 Meas. Value
 Temperature
 Sample Flow
Settings: Choose the respective actuator:
 Time proportional
 Frequency
 Motor valve
Actuator = Time proportional
Examples of metering devices that are driven time proportional are
solenoid valves, peristaltic pumps.
Dosing is controlled by the operating time.
Cycle time: duration of one control cycle (on/off change).
Range: 0–600 sec.
Response time: Minimal time the metering device needs to react.
Range: 0–240 sec.
Control Parameters
Range for each Parameter same as
Redox sensor
0 mV to +200 mV
5.2.1.43, p. 64
A-96.150.441 / 230523