Fluidwell F112-P, Manual

Page: 14 / 52

FW_F112P_v1901_02_EN.docx
Page 14
3.1.6. EXPLANATION OF SETUP MENU 5 - FLOWMETER
SIGNAL
51 With this setting the type of flowmeter output is selected. The settings with
LP (low-pass) filter are used to apply a build-in noise reduction.
Selections "active pulse" offer a detection level of 50% of the supply
voltage.
TYPE OF SIGNAL EXPLANATION RESISTANCE FREQ
. /
M
V
REMARK
NPN
NPN input 100 kΩ pull -up max.6 kHz. (open collector)
NPN - LP
NPN with low pass filter 100 kΩ pull -up max.1.2 kHz.
(open collector)
less sensitive
REED
Reed-switch input 1 MΩ pull -up max.1.2 kHz.
REED - LP
Reed-with low pass filter 1 MΩ pull -up max.120 Hz. Less sensitive
PNP
PNP input 100K pull-down max.6 kHz.
PNP - LP
PNP with low pass filter 100K pull-down max.1.2 kHz. Less sensitive
NAMUR
NAMUR input 820 Ω pull -down max.4 kHz.
External power
required
COIL-HI
High sensitive coil input -
min. 20 mV
pp
Sensitive for
interference!
COIL-HI (type ZF)
min. 10 mV
pp
COIL-HI (type ZG)
min. 5 mV
pp
COIL LO
Low sensitive coil input - min. 80 mV
pp
Normal
sensitivity
8-1 DC
Active pulse input
detection level 8.2V DC
3K9 max.10KHz.
External power
required
12 DC
Active pulse input
detection level 12V DC
4K max.10KHz.
External power
required
24 DC
Active pulse input
detection level 24V DC
3K max.10KHz.
External power
required
3.1.7. EXPLANATION OF SETUP MENU 6 - LINEARIZE
The linearization function is available to approach the real flow curve better as with the general
K-Factor (KF0). This to obtain a more accurate flow rate, total and accumulated total as well as the
analog and pulse output at any flowmeter frequency. A maximum of 15 linearization-positions can be
entered while the interpolation will calculate any other position in-between.
For each linearization position, the frequency and a Meter Factor (MF) must be entered. The lowest
frequency and MF you enter will be valid from 0Hz. The highest frequency and MF will be valid till
10KHz. It is advised to enter the frequencies in increasing order, however it is not necessary. Please
have a look at following example to understand the calculation and the method of linearization: