background image

Window comparator mode

 

●  In this mode, the ON / OFF state of the comparative output is controlled with a flow rate in the set range.

OFF

Comparative

output

Comparative

output

<Within setting range ON>

ON

OFF

<Out of setting range ON>

ON

Flow rate

Flow rate

Smaller threshold Larger threshold

Smaller threshold Larger threshold

Note: Hysteresis of the window comparator mode is approx. 1% F.S. (factory setting). The hysteresis can be changed 

in the range of approx. 1 to 8% F.S. For details, refer to “

Hysteresis setting

” in “

9

PRO MODE

.”

Hysteresis mode

 

●  The comparative output ON / OFF state can be controlled with randomly set hysteresis in this mode.

OFF

<Threshold value small side ON>

ON

OFF

<Threshold value large side ON>

ON

Comparative

output

Comparative

output

Flow rate

Flow rate

Smaller threshold Larger threshold

Smaller threshold Larger threshold

Integrated output mode

 

●  The comparative output ON / OFF state can be controlled with randomly set inte-

grated threshold value in this mode.

OFF

<ON when higher than integrated threshold value>

Integrated threshold value

ON

Integrated flow rate

Integrated flow rate

Integrated threshold value

OFF

<OFF when higher than integrated threshold value>

ON

Comparative

output

Comparative

output

Integrated pulse output mode

 

●  In this mode, pulse can be outputted 

with each specified integrated value. 

For the specified integrated value, refer 

to “

13

SPECIFICATIONS

.”

 

● Take care that if fluid flows in the direc-

tion opposite to the set flow direction, 

the integrated pulse is outputted as well.

OFF

Specified integrated value

Approx. 40ms 

(fixed value)

ON

Com-

parative

output

Integrated flow rate

7

RUN MODE

 

●  In this mode, flow rate display mode, confirmation of the set value, peak / bottom 

hold function and key lock function are available.

In the flow rate display mode, color of the digital display changes in green or red 

in conjunction with the comparative output. The color of the main display can be 

changed in conjunction with the comparative output 1, while the color of the sub 

display can be changed in conjunction with the comparative output 2. 

For setting color of the digital display, refer to “

Display color setting

” in “

9

PRO MODE

.”

Flow rate display mode

 

●  Either instantaneous flow rate or integrated flow rate can be indicated on the digital display.

 

● The integrated value can be reset by key operation or external input while the in-

tegrated flow rate is indicated. (Note 1)

 

● At the instantaneous flow rate display, 4-digit instantaneous flow rate value is indi-

cated on the main display, while the flow direction is indicated on the sub display.

 

●  When setting flow direction to bi-direction or one-side forward direction, if fluid flows in 

the direction opposite to the forward direction display on the main body, the flow rate val-

ue is indicated negatively. In case of one-side reverse direction, if the fluid flows in the 

same direction to the forward direction display, the flow rate value is indicated negatively.

 

● At the integrated flow rate display, 7-digit integrated flow rate value is indicated on 

the main display and the sub display.

 

●  When setting flow direction to bi-direction, if fluid flows in the direction to the forward di-

rection display on the main body, the integrated value will be counted up. While if fluid 

flows in the opposite direction, the integrated value will be counted down. Further, in case 

of one-side forward direction and one-side reverse direction, if fluid flows in the direction 

opposite to the set flow direction by mistake, the integrated value will be counted down.

(RUN mode)

(Integrated flow rate display) (Note 2)

Press

(Integrated value reset)

Press

(RUN mode)

Press

/

Hold down for 2 sec.

(Instantaneous flow rate display)

(RUN mode)

Press

Notes: 1) When resetting the integrated value, first set to the integrated value reset input function, then conduct key operation or 

input an external signal. For setting the integrated value reset input function, refer to “

CH2 setting

” in “

9

PRO MODE

.”

 

2) The integrated value will be reset when the power is supplied again at the integrated flow rate display.

Confirmation of the set value

 

●  The threshold value of the comparative output 1 and the output mode can be checked 

while holding down UP key when the flow rate is indicated. Meanwhile, the threshold 

value of the comparative output 2, the output mode and the integrated value reset input 

function can be checked while holding down DOWN key when the flow rate is indicated.

<Display for the set value of comparative output 1>

(RUN mode)

(Threshold value 1)

While holding down

(Threshold value 2)

Blinks alternately

<Display for the set value of comparative output 2>

(RUN mode)

(Threshold value 1)

(Threshold value 2)

While holding down

Blinks alternately

<When CH2 is set to the integrated value reset input function>

(RUN mode)

(Integration reset input function)

While holding down

Notes: 1) When CH2 is set to the teaching function, the set value cannot be checked. 
 2) 

For details of the output mode, refer to “Output mode and threshold value setting mode” in “

8

MENU SETTING MODE

.”

Peak / bottom hold function

 

● The peak / bottom hold function displays the peak value and bottom value of the 

fluctuating flow rate.

(RUN mode)

Peak hold display

Press

Press

Hold down

while pressing

Bottom hold display

Hold down

Key lock function

 

●  The key lock function prevents key operations so that the conditions set in each 

setting mode are not inadvertently changed.

 

● After setting the key lock, “ 

 ” will be displayed on the digital display.

<How to set>

(RUN mode)

(RUN mode)

(Key lock set)

Automatic

Hold down    for 1 sec.

while pressing

<How to release>

(RUN mode)

(RUN mode)

(Key lock released)

Automatic

Hold down    for 3 sec.

while pressing

8

MENU SETTING MODE

 

●  In this mode, the output mode (threshold value setting mode), forcible output func-

tion and zero-point adjustment function can be set.

(RUN mode)

(Output mode)

(Forcible output function)

(Zero-point adjustment function)

Hold down 

for 3 sec.

Set content of each item changes by pressing  

Press

Press

Press

Output mode and threshold value setting mode

 

●  Output mode and threshold value can be set.

(RUN mode)

(CH1 setting mode) (Note) For the operation of the output mode, refer to the following diagram.

(CH2 setting mode) Conduct same operation with “CH1 setting mode.”

(Threshold value1 setting mode)

Press

Press

Press

Press

Press

/

Threshold value changes by pressing  /

Press

/

Press

/

Press

/

Press

/

Press

/

Press

/

Press

/

Press

/

<When output mode is set to the window comparator mode or hysteresis mode> 

(Smaller threshold)

<When output mode is set to the integrated output> 

(Threshold value 2 setting mode) Conduct same operation with “threshold value 1 setting mode.”

(Output mode)

(Smaller threshold) 

(Larger threshold)

Press

Note:  If the teaching function is selected at CH2 setting in PRO mode, jumps to the “

Selection of method for loading 

input value

” at “

CH2 setting

” under PRO mode.

<Output mode operation>

Sub display

Output mode

Operation

Output OFF mode (Factory setting)

Output OFF

Window comparator mode

Within setting range ON
Out of setting range ON

Hysteresis mode

Smaller threshold value side ON

Larger threshold value side ON

Integrated output mode

ON when higher than integrated threshold value

OFF when higher than integrated threshold value

Integrated pulse output mode

Pulse output

Forcible output function

 

●  The forcible output function is used to turn ON the comparative output forcibly re-

gardless of output mode or threshold value.

 

● The comparative output turns ON while pressing UP / DOWN key.

(RUN mode)

Forcible output function

(Comparative output 1 ON )

CH1 lights up in red CH2 lights up in red 

(Note)

CH1 / 2 light up in red 

(Note)

(Comparative output 2 ON )(Comparative output 1 / 2 ON )

Press

Press

Press

Press

/

Press

Note:  When CH2 is set to the external input, the comparative output 2 does not operate.

 

For the setting method of CH2, refer to “

CH2 setting

” in “

9

PRO MODE

.”

Summary of Contents for FM-252-4-P

Page 1: ... of the product may fall off 3 WIRING Connection method Insert the cable with connector CN F15 C1 accesso ry into the connector area of this product and mount the connector cover Disconnection method Remove the connector cover and pressing the release lever of the cable with connector pull out the connector Connector cover Note Do not pull by holding the cable without pressing the release lever as...

Page 2: ...ction then conduct key operation or input an external signal For setting the integrated value reset input function refer to CH2 setting in 9 PRO MODE 2 The integrated value will be reset when the power is supplied again at the integrated flow rate display Confirmation of the set value The threshold value of the comparative output 1 and the output mode can be checked while holding down UP key when ...

Page 3: ... Press ON when higher than threshold value ON when lower than threshold value Notes 1 When setting CH2 the threshold value of the comparative output 1 may be reset Therefore confirm the threshold value of the comparative output 1 after setting CH2 2 For CH2 setting mode refer to Output mode in 8 MENU SETTING MODE 3 For teaching function refer to 10 TEACHING FUNCTION Response time setting Sets resp...

Page 4: ... or more cable Make sure that stress by forcible bend or pulling is not applied directly to the sen sor cable joint This product is suitable for indoor use only Do not use this product in places having excessive vapor dust etc or where it may come in contact with corrosive gas etc Take care that the product does not come in contact with water oil grease or or ganic solvents such as thinner etc str...

Reviews: