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CHAPTER 7 CHANNEL ALARM
7.1 ALARM AND CONFIGURATION
This instrument has the channel high alarm and low alarm function, and it supports 1
road alarm relay contact output and saves the latest 50 alarm information, including
alarm time, cancellaion alarm time, alarm type and alarm channel.
Configuration location: configuration - > function configuration - > alarm, and the
configuration screen is as follows:
Alarm config
Chnl
Flow
H
60000
L
0
Zone 0
Relay
Relay
00
00
Exit
Channel
Choose alarm channel, flow rate, temperature, pressure (optional).
Alarm H, alarm L
Set parameter value of high alarm and low alarm.
Contact
Road contact output is optional, and its capacity is 250 VAC/ 3 A, 30 VDC / 3 A
(impedance load). The contact type is normally open. Multiple channel alarm can
share contact together.
Hysteresis
Set alarm hysteresis parameter to prevent frequent alarm when signal has
oscillation when it is near the alarm value.
Alarm description
Alarm type
High alarm
Low alarm
Alarm condition
Channel value >
high threshold
channel value
Channel value < low
threshold channel
value
45
Condition for alarm
cancellation
Channel value< high
threshold channel value hysteresis
Channel value > low
threshold channel value +
hysteresis