82 A-96.250.531 / 300617
AMI Oxytrace QED
Program List and Explanations
5.3.2.50 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
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.
5.3.2.22 Parameter: choose one of the following process values
Oxygen
Temperature
Sample Flow
Saturation
5.3.2.32 Settings
Choose the respective actuator:
Time proportional
Frequency
Motor valve
Examples of metering devices that are driven time proportional are
solenoid valves, peristaltic pumps.
Dosing is controlled by the operating time.
5.3.2.32.20 Cycle time: duration of one control cycle (on/off change).
Range: 0–600 sec.
5.3.2.32.30 Response time: Minimal time the metering device needs to react.
Range: 0–240 sec.
5.3.2.32.4 Control Parameters:
Range for each Parameter same as 5.2.1.43, p. 78
Examples of metering devices that are pulse frequency driven are
the classic membrane pumps with a potential free triggering input.
Dosing is controlled by the repetition speed of dosing shots.
5.3.2.32.21 Pulse frequency: Max. pulses per minute the device is able to re-
spond to. Range: 20–300/min.
5.3.2.1 Function = Control upwards/downwards
Actuator = Time proportional
Actuator = Frequency
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