89750147 Crouzet USA, 89750147 Datasheet - Page 239

• Manufacturer Part Number: 89750147
• Description: STAINLESS SLEEVE-MILL TEMP PRB
• Manufacturer: Crouzet USA

Specifications of 89750147

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

➜ Measurement principle
Measurement begins on a rising edge of the signal to be measured.
The measurement time is greater than TR, but less than TL.
Measurement stops at the end of the current period (3), after TR.
If the period (3) does not end before TL, the measurement result will be
zero (0).
The outputs are updated each time measurement ends according to the
selected output mode.
■
■
➜ Application example
You wish to display a linear speed of 2.00 m/s for a drive pulley rotating
at 300 rpm. A sensor on this pulley delivers one pulse per revolution, ie:
Required display: V = 2.00 (result in m/s
Given that: n = 1
Hence Cœf =
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(1) Maintained output
Tachometer function
Speed
Chronometer function (Precision : 150 ppm)
PROG
PROG
PROG
Compteurs à préselection et multifonctions CP4 - CP7
Modes d'entrées
(1)
(2)
Maintained output : output active if the measured speed is greater
Pulsed output : output activated during time T, when the preset thre-
Multifunction counters CP4 - CP7
than the preset speed.
shold is crossed.
Out 1
Out 2
Out 1
Out 2
IN 1
IN 1
P2
P1
IN 2
0
Ns • RPX
V • n
(2) Pulsed output
➞
V =
Ns =
Ns • Cœf • RPX
Cœf =
300
60
n
3 Display (PR ➝ 0), 1-channel
3 Display (PR ➝ 0), 1-channel
3 Display (0 ➝ PR), measurement on
4 Display (PR ➝ 0), measurement on
1
2
3
1
2
3
1
2
3
4
200 • 1
5 • 1
= 5
➞
Input IN1
Display (0 ➝ PR), 1-channel
pulse measurement
pulse measurement
Input IN1
Display (0 ➝ PR), 1-channel
pulse measurement
pulse measurement
Input IN1 (start counting)
Input IN2 (stop counting)
2 separate channels
2 separate channels
RPX = 1)
= 40
t
1
2
3
1
2
3
1
2
3
4
Measurement precision : 100 + (200 / TR) PPM
Example : for TR = 1s
In addition, the decimal point is positioned in the hundreds (xxxx.xx).
Selection of TR : you wish the measurement to be updated every
2 seconds if TR = 2s. Selection of TL > TR, for example TL = 3s.
The tachometer function can also be used to calculate a flow rate.
300 rpm
0
Tn
0
Tn
0
Tn
Speed
(1)
(2)
T1
---
---
---------
---------
Out 1
Out 2
Out 1
Out 2
---------
---------
T1
T1
Signal measurement period
P1
P2
0
Start of measurement
Tn - T1
Tn - T1
T1
1
T1
Tn - T1
T1
Time TR
0
---------
---------
T2
---------
---------
---------
---------
Time TL
T2
T2
2
➞
Tn - (T1 + T2)
T1 + T2
Tn - (T1 + T2)
T1 + T2
Tn - (T1 + T2)
T1 + T2
300 PPM (0.03%)
3
2 m/s
End of measurement
Signal to be
measured
t
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