14
DT-501●
Mode 4 Display value calculation
External input pulse (Hz)
A
Parameter setting
P1 Number of blades per revolution
B
P2 Capacity per sensor blade
C
P3 Scaling
D
P4 Decimal point display
E
Equation
(A
*
B)
*
C
*
D
16.
When You Select Mode 4 (Flowmeter Mode) for Measurement
Setting Method
Flowmeter mode
Flow sensor
Set each setting item for mode and parameter according to the following procedures.
(For the setting method of functions, refer to pages 16 and 17.)
● Setting example (For the flow display from the tank)
To display the flow ( ℓ /min) in DT-501 under the following conditions when
the flowmeter for which the number of blades is unknown as in the figure on
the left:
[Conditions]
● Number of blades : Unknown
● Output of the flow sensor : 2.5cc/p
*p : Pulse
Normal display
Mode setting
Finish setting
The main display shows "0".
No.
Setting item
Setting range
Default setting value
Numerical value to be set according to the above example
Display
Description
P1 Number of blades per revolution
1 - 99
_ _ _ _01
1
1
Enter the number of blades of the flowmeter. If it is unknown, enter "1".
P2 Capacity per sensor blade (cc, ℓ , etc.)
0.0001 - 99999
_ 0001.0
1.0
2.5cc/p Enter the capacity per blade that the sensor can read.
P3 Scaling
0.00000 - 999999
00001.0
1
0.06 Refer to "About scaling" below.
P4 Decimal point display
0.00000 - 00000.0
00000.0
Displays to one
decimal place
00000.0 Displays to one decimal place.
P5 Display cycle
0.2/0.5/1.0/2.0/
5.0/10/15/30/60 sec.
_1.0_
1 sec.
1 sec. Measure using the default setting value as no special instruction is provided.
P6 Auto zero time
0.1 - 150 sec.
_ _006.0
6 sec.
6 sec. Measure using the default setting value as no special instruction is provided.
P7 Input filter
10/30/100/0.02kHz
_ 10_
10kHz
10kHz Measure using the default setting value as no special instruction is provided.
0
-
0 1
-
0. 0
Press and hold the SHIFT + MODE keys for
5 seconds or more.
The main display shows the current set mode
No. after blinking.
* When you are setting for the first time after the
purchase of this unit, mode 1 (digital tachometer
mode) in the factory default setting is displayed.
Every time you press the key, the dis-
play switches to the next mode No.
1 ● 2 ● 3 ● 4
99
Select "4".
-
0 4
-
Note) If you change the mode settings, each parameter, function, and high and low set point 1 setting value will return to the factory default setting value.
• Set mode 4 (flowmeter mode).
● Setting method
(1) Mode
Press the SET key.
The display goes to mode 4 (flowmeter mode).
* For the description about the parameter functions, refer to page 20.
• Parameter setting items in mode 4 (flowmeter mode) and numerical values to be set according to the above example.
(2) Parameter
● About scaling (parameter 3)
Assuming the flow per second to be represented in the parameter 2 flow unit (cc in the example) is
a
(cc/s), parameter
3 will be coefficient value when a multiplier is used to change the unit of
a
(cc/s) for display.
(1) To display the value as in the original unit (cc/s)
a
(cc/s)
*
1 ●
a
(cc/s)
● ●
Parameter 3
(2) To display the value in the unit (ℓ /min) as in the above setting
a
(cc/s)
*
60 ÷ 1000 ●
A
( ℓ /min)
●
Parameter 3
*
*
60 : Multiply it by 60 as it is the flow per minute.
÷1000 : Divide the value by 1000 as parameter is set in the unit of “cc”.
● Mode 4 (flowmeter mode) Display value calculation equation
s
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