Swann AMI Hydrogen QED Operator's Manual page 70

AMI Hydrogen QED
Program List and Explanations
5.3.2.400
5.3.2.50
5.3.2.1
5.3.2.22
5.3.2.32
5.3.2.32.20
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 Hydrogen; Range: 0.00 ppb –20.00 ppm
 Parameter Temperature; Range: 0–100 °C
 Parameter Sample flow; Range: 0–50 l/h
 Parameter Saturation; Range: 0–200 %
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 s
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 one of the following process values
 Hydrogen
 Temperature
 Sample Flow
 Saturation
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 s
Response time: Minimal time the metering device needs to react.
Range: 0–240 s
Control Parameters:
Range for each Parameter same as 5.2.1.43, p. 64.
A-96.250.791 / 040219