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Zero-point adjustment function

 

●  The zero-point adjustment function is used to adjust the gap of the zero-point be-

tween the display and the analogue voltage output.

(RUN mode)

(Zero-point adjustment function)

Adjusted value is indicated

Press

Press

9

PRO MODE

 

●  In this mode, each detailed function can be set.

When pressing the MODE key after changing the set content of each item, the set 

content is confirmed and returns to RUN mode. 

(RUN mode)

(RUN mode)

Hold down 

for 8 sec.

Setting content of each item changes by pressing 

(Flow direction settting)

Press

Press

(CH2 settting)

(Response time settting)

Press

Press

Press

Press

Press

Press

Press

Press

Press

(Display color settting) (Sub display settting)

(Display speed settting)

(Hysteresis settting)

(Flow rate unit settting)

(Eco mode settting) (Settings reset function) (Model display function)

Flow direction setting

 

●  Sets the flow direction of fluid. Either bi-direction, one-side forward direction or 

one-side reverse direction can be set. (Factory setting: bi-direction)

 

● 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 value 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.

 

● Zero-point and the span of the analogue voltage output change as follows de-

pending on the set flow direction. 

5

3

-F.S.

+F.S.

0

Flow rate

Analogue

voltage 

output (V)

Analogue

voltage 

output (V)

<Bi-direction (Factory setting)>

1

5

+F.S.

F.S. = Full scale value

0

Flow rate

1

<One-side forward / one-side reverse direction>

(Flow direction setting)

(Bi-direction)

(RUN mode)

Press

/

Press

Press

/

Press

/

One-side forward 

direction

One-side reverse 

direction

Note:  If changing the flow direction setting, output mode (CH1 / CH2), threshold value (CH1 / CH2), zero-point adjust-

ment value, integrated flow rate value and CH2 setting are all cleared, then returns to the factory setting. 

CH2 setting

 

●  Select whether CH2 is used as comparative output 2, integrated value reset input 

function or teaching function. (Factory setting: comparative output 2)

 

● When setting CH2 to the teaching function, select method for loading input value, 

the number of input points and input waveform operation. 

(Comparative output 2)

Press

Press

Press

(RUN mode)

Press

/

(CH2 seting)

(Integrated value reset input function) (Teaching function) (Note 3)

Press

/

Press

/

<Selection of method for loading input value>

(Key operation)

(External input)

Press

/

(Note 2)

(Note 1)

To “CH2 setting mode” in 

MENU SETTING MODE

(RUN mode)

Press

Press

<Selection of the number of input points>

(1-point input)

(2-point input)

Press

/

<Selection of 1-point input waveform operation>

When pressing                

after selecting 

1-point input

When pressing    after 

selecting 2-point input    

Press

/

<Selection of 2-point input waveform operation>

Press

/

ON when out of the 2 points

ON when within the 2 points

Press

/

Press

/

Press

/

ON when higher than threshold 

value between 2 points  

ON when lower than threshold 

value between 2 points  

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 response time. The response time can be selected from seven levels: 50 to 

1,500ms. Chattering and malfunction due to rapid change in the flow rate can be 

prevented. (Factory setting: 50ms)

(50ms)

(RUN mode)

(80ms)

(1,500ms)

/

Press

Press

Press

Press

Press

/

/

/

Response 

time setting

Display
Response time

50ms

80ms

120ms

200ms

400ms

800ms

1,500ms

Note:  The response time is applied to the sensor itself. Take care that the response time changes depending on piping. 

Display speed setting

 

●  Updating cycle of the digital display can be selected from three levels: 250ms, 

500ms or 1,000ms. (Factory setting: 250ms)

(250ms)

(500ms)

(1,000ms)

(RUN mode)

Press

/

Press

Press

/

Press

/

Display speed 

setting

Sub display setting

 

●  Flow direction, flow rate unit and applicable fluid can be indicated on the sub dis-

play. (Factory setting: flow direction)

(Flow direction)

(Flow rate unit)

(Applicable fluid)

(Sub display setting)

Press

/

Press

Press

/

Press

/

(RUN mode)

Display color setting

 

●  Display color of the digital display can be set either: red when comparative output 

is ON, green when comparative output is ON, always red, or always green. (Fac-

tory setting: red when comparative output is ON) 

 

● When setting either red when ON or green when ON, the color of the main display 

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

display changes in conjunction with the comparative output 2.

(Red when ON) (Green when ON) (Always Red)

(Always Green)

Press

/

Press

/

Press

/

(Display color setting)

Press

/

Press

(RUN mode)

Hysteresis setting

 

●  Sets hysteresis of the window comparator mode. The hysteresis can be selected 

from eight levels: approx. 1 to 8% F.S. (Factory setting: approx. 1% F.S.)

(Approx. 1% F.S.)

(Approx. 2% F.S.)

(Approx. 8% F.S.)

(RUN mode)

Press

/

Press

Press

/

Press

/

Press

/

Hysteresis 

setting

Flow rate unit setting

 

●  Display unit can be set either ANR or NOR. (Factory setting: ANR)

ANR: Flow rate that is converted to +20°C, 1 atmosphere (101kPa) volume

NOR: Flow rate that is converted to 0°C, 1 atmosphere (101kPa) volume 

(ANR)

(NOR)

(Flow rate unit setting)

Press

/

Press

Press

/

(RUN mode)

ECO mode setting

 

●  If not operating the key for approx. 1 min. after setting ECO mode, the digital dis-

play turns OFF (only “L” is displayed) and the current consumption can be re-

duced. (Factory setting: OFF)

 

● Press any key to temporarily show the normal indication.

(OFF)

(ON)

Press

/

Press

Press

/

(ECO mode setting)

(RUN mode)

Settings reset function

 

●  Returns to the factory settings. (Factory setting: OFF)

(Settings reset function) (OFF)

(ON)

Press

/

Press

Press

/

(RUN mode)

Model display function

 

●  Displays the model. Zero-point adjustment value, full-scale (F.S.) flow rate, appli-

cable fluid, comparative output, flow rate unit and flow direction can be checked.

(RUN mode)

Press

Press

/

Press

/

(Model display function)

Full-scale (F.S.) flow rate

Flow rate unit

Applicable fluid

Zero-point

adjustment

value

Flow direction

Comparative output

(Comparative output:   :NPN,    :PNP) 

(Applicable fluid:      : Air, nitrogen) 

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...

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