L-770HP--E
Parameter
Descriptions
Setting range
Standard value
H/L alarm assign
Assigning of H/L alarm
Mass Flow / Volume Flow
Density / Temp
Counter
Mass Flow
H/L alarm type
H/L alarm type
High alarm / Low alarm
H/L alarm
High Alarm
High alarm point
H alarm setting value
Depends on H/L alarm assign.
0
Low alarm point
L alarm setting value
Depends on H/L alarm assign.
0
H/L alarm hys
H/L alarm hysteresis
Depends on H/L alarm assign.
0
[Parameter settings for the higher / lower alarm]
■ Setting method
（
）
Set Output function and Output logic in accordance with the explanations in
“
. Status output function
”
.
（
）
Set H/L alarm assign (assigning of H/L alarm).
・
Mass Flow
：
Mass instantaneous flowrate
・
Vol Flow
：
Volume instantaneous flowrate
・
Dens
：
Density
・
Temp
：
Temperature
・
Counter
１
：
Counter
（
）
Select H/L alarm type (alarm type).
・
Set
“
High Alarm
”
if to only activate the higher limit alarm.
・
Set
“
Low Alarm
”
if to only activate the lower limit alarm.
・
Set
“
H/L Alarm
”
if to activate both the higher and the lower limit alarm.
（
）
Set High alarm point (higher limit alarm value).
High alarm will activate when value exceeds this limit. Set value that will activate the High alarm.
In case "Low Alarm" is set in (), this setting is not required.
（
）
Set Low alarm point (lower limit alarm value).
In case
“
High Alarm
”
is set in (), this setting is not required.
（
）
Set H/L alarm hys (higher / lower limit alarm hysteresis).
This is a setting of dead zone after the alarm occurs.
Set a large value when the measurement values have a significant fluctuation, while set a small
value when early recovery from alarm status is required.
■Example of settings and operations
Parameter
Standard value
Output function
H/L Alarm
Output Logic
Negative
H/L alarm assign
Mass Flow
H/L alarm type
H/L Alarm
High alarm point
00
［
kg/min
］
Low alarm point
00
［
kg/min
］
H/L alarm hys
00
［
kg/min
］
