Azbil MagneW Two-wire PLUS+ MTG15A, User Manual

Page: 122 / 280

5-52
5-6-11. Setting low flow cutoff
This function is used to set the low flow cutoff value. When the flow rate reaches the entered
value, the analog output is cut off and latched to 4 mA (display flow rate of 0%) to avoid errors
due to flow pulsation in range value close to zero.
Also, for reverse flow rate the output is latched to 4 mA (display flow rate of 0%) The lower
limit of the low flow cutoff setting is determined by the velocity range.
1. If the velocity range exceeds 3 m/s, the lower limit value is 1%.
2. If the flow speed range is 3 m/s or less, the lower limit value will cut the flow speed of 0.03
m/s or less flow the rate.
Example: If the flow speed range is set as 2 m/s, the lower limit of the low flow cutoff
value is 1.5%. (= 0.03/2 = 0.015 = 1.5%)
Setting range: 1 to 10%
Default: Depends on the velocity range.
Set low flow cut in accordance with the following procedure:
Step Procedure Screen
1 Enter ENGINEERING MODE in accordance with the
entry into ENGINEERING MODE (see section 5-5-
10. on page 5-33). Then press the

or

key to
display the screen at right.
12.3 %
# LOW-FLOW CUT
02 %
2 Press the

key.
The cursor then moves to the position of the low flow
cut value.
12.3 %
# LOW-FLOW CUT
02 %
3 Using the

or

key, change the value to a desired
value to be set.
12.3 %
# LOW-FLOW CUT
05 %
4 Press the

key to move the cursor to the position
under #.
Press the MODE key to return to the
MEASUREMENT MODE and to save data.
12.3 %
# LOW-FLOW CUT
05 %
CAUTION
You have only ten minutes to return to MEASURING MODE to save the new value before
the system resets it to the previously saved value.