Commissioning And Measuring Operation - Sika VVX-Serie Betriebsanleitung

VVX
4

Commissioning and Measuring Operation

IMPORTANT
Before the first commissioning, check whether the measuring system has been
vented by flushing.
4.1 Measuring Operation
Type
Output signal characteristics
Flow frequency output:
Pulse rate / K-facto [1/l]r
optional:
Signal shape
Signal current
Flow analogue output 0.5...3.5 V (optional):
Output signal
*4
Scaling [l/min]
Voltage rate [V / l/min]
Signal current
Flow voltage and current output (optional):
Output signal
*4
Scaling [l/min]
Voltage / current rate
- 0...10 V [V / l/min]
- 4...20 mA [mA / l/min]
Signal current
Working resistance
Temperature (optional):
• Sensor directly
• Analogue output
*2) Resolution 7 bit or 10 bit (depending on version).
*3) Resolution 12 bit.
*4) other scales possible.
*5) Dual slope measurement method with basic accuracy ±0.5 K.
*6) Dual slope measurement method with basic accuracy ±1.0 K.
Technical changes reserved
VVX15 VVX20
500 200
3...1,000 2...800
Square wave signal • duty cycle 50:50
NPN open collector (o.c.), PNP o.c. or push-pull
2...65 or
2...40
5...80
0.07895 0.04762 or
0.04000
0...40 0...80
0.25000 0.12500
0.40000 0.20000
≤ 125 Ω at max. 24 V signal voltage
Pt1000 (2-wire, class B) or NTC (R
*2
0.5...3.5 V corresponds to 0...90°C with (Pt1000
Commissioning and Measuring Operation
VVX25
100
1...500
≤ 20 mA
*2
0.5...3.5 V
7...150
0.02098
≤ 1 mA
0...10 V • 4...20 mA
0...150
0.06667
0.10667
≤ 1 mA
(Voltage output)
=10.74 kΩ, B 0/100 3450)
25
VVX32 VVX40
100l 50
-/- -/-
12...250 22...400
0.0126 0.0079
*3
0...250 0...400
0.04000 0.02500
0.06400 0.04000
(Current output)
*5 *6
or NTC )
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