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/0705
Hans Turck GmbH & Co.KG • D–45466 Mülheim/Ruhr • Tel. 0208/4952-0 • Fax 0208/4952-264 • E-Mail: [email protected] • www.turck.com
Maintenance
If operated in contaminated or calcareous
water, deposits can build up, which may
lead to measuring errors. Thus it may be
necessary to clean the section of the
sensor through which the liquid passes.
The metal surface may not be damaged.
Electrical connection (S174)
Operation
The inline flow sensors have front panel
buttons for setting functions and to display
settings. All values are indicated via the
3-digit 7-segment display.
Button [S1/-]:
After a short press of the
button, the set limit value for switch point
S1 is indicated. In the programming mode,
this button can also be used to decrease
the indicated value.
Button [S2/+]:
After a short press of the
button, the set limit value for switch point
S2 is indicated. In the programming mode,
this button can also be used to increase
the indicated value.
Button [M]:
After a short press of the
button, the measured temperature value in
°C is displayed for approx. 3 s. In the
programming mode, this button can be
used to select functions and parameters.
Programming
To enter the programming mode, press
buttons
[S1/-]
and
[S2/+]
for at least 3 s
until the display starts flashing. For a short
moment the character string
[Cod]
is
displayed, followed by the number
[ 0]
,
which can be modified according to the
valid access code using buttons
[S1/-]
and
[S2/+]
. Use button
[M]
to select the
required parameter. After selection, the
parameter is displayed for approx. 2 s,
followed by the associated value which
can now be modified. During entry it is
automatically verified whether the set
parameter is admissible. Two decimal
points of the display will flash to warn
against an invalid entry. To terminate
programming and save all values press
button
[M]
for at least 3 s until the display
stops flashing.
+
2 WH
4 BK
1 BN
3 BU
S1
S2
FC
Average forming [nF']:
This parameter permits the entry of a value
defining the time interval at which a
measuring value average is formed.
Values between 1…8 s can be entered.
A low value will lead to a fast response,
whereas a high value steadies the display
of the measuring value.
Medium selection [GLY]:
The flow sensor series FTCI is generally
suited for monitoring water circuits. If a
cooling circuit contains Glycol
(monoethyleneglycol), then the specific
contents can be entered as a percentage
in increments of 5 %. The measuring value
deviation is thus compensated.
Reference function [CAL]:
With this function, the displayed value can
be modified by ± 25 %. This can be useful
in order to adapt the display exactly to a
reference instrument.
Reset function [rES]:
Use the RESET function to set all values
back to the ex factory settings. For this,
the device must be disconnected from
power. Button
[M]
is then pressed during
re-connection. The character string
[rES]
is displayed. Then you will be prompted to
enter the access code. Press
[M]
to
confirm the entry and carry out the reset.
Access code [Cod]:
Without entry of an access code it is not
possible to set or modify device
parameters. The ex factory setting is “0”.
This value can be modified at the end of
the programming menu.
Unit of switch point S2 [US2]:
Switch point S2 can be set for flow rate
[ L]
or temperature monitoring
[°C]
. Select
[°C]
to activate temperature control. The
value units relating to this switch point will
be changed accordingly.
Adjustable range switch points S1
[SP1] and S2 [SP2]:
The switch points S1 or S2 are entered in
the unit l/min, or – if required - in °C for S2.
The switch point may be placed anywhere
within the total adjustable range (s. page 10).
Hysteresis switch points S1 [hS1]
and S2 [hS2]:
The hysteresis is the difference between
the switch-on value (which is identical to
the programmed switch point S1 or S2)
and the switch-off value. It is entered in
l/min, or – if required - in °C for S2
(s. page 10).
Switch point outputs S1 [OU1]
and S2 [OU2]:
Each switching output S1 or S2 can be
adjusted independently from each other for
N.O. and N.C. mode operation.
Switch-on delay switch points S1
[dS1] and S2 [dS2]:
If it is not required to update the output
signal immediately after the switch point
S1 or S2 has been exceeded, this value
can be set in a range from 0…50 s. The
signal will then only be updated after the
set time has expired, provided the limit is
still exceeded.
Switch-off delay switch points S1
[dr1] and S2 [dr2]:
If it is not required to update the output
signal immediately after the switch point
S1 or S2 has been underranged, this value
can be set in a range from 0…50 s. The
signal will then only be updated after the
set time has expired, provided the limit is
still underranged.
Parameter, Operations and Functions
