Swann AMU pH-Redox Operator's Manual page 75

AMU pH-Redox
Program List and Explanations
5.3.1.5
5.3.2 and 5.3.3
5.3.2.1
5.3.2.20
5.3.2.300
A-96.250.441 / 060619
Case Temp. low: Set the alarm low value for temperature of elec-
tronics housing. If the value falls below the programmed value
E014 is issued.
Range: -10–20 °C
Relay 1 and 2: The contacts can be set as normally open or nor-
mally closed with a jumper. See
The function of relay contacts 1 or 2 are defined by the user
NOTICE: The navigation in the menu <Relay 1> and <Relay 2>
is identical. For reason of simplicity only the menu numbers of
Relay 1 are used in the following.
1 First select the functions as:
- Limit upper/lower,
- Control upwards/downwards,
- Timer
- Fieldbus
2 Then enter the necessary data depending on the selected func-
tion.
Function = Limit upper/lower:
When the relays are used as upper or lower limit switches, program
the following:
Parameter: select a process value:
 Meas. Value
 Temperature
 Sample flow
Setpoint: If the measured value rises above respectively falls below
the set-point, the relay is activated.
Parameter Range: pH sensor
Meas. Value -3.00 pH to +15.00 pH
Temperature -25 °C to +270 °C
Sample flow 0–200 l/h
Relay 1 and 2, p. 35.
Redox sensor
-500 mV to +1500 mV
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