ProMinent DULCOMETER D1C Type D, DULCOMETER D1C Type W Operating Instructions Manual

Operating Instructions

DULCOMETER® D1C

Part 2: Adjustment and Operation
Measured variable inductive conductivity

®

ProMinent

D1C2-cond.-001-D

Conductivity

100

DULCOMETER

STOP

START

µ

S/cm

Conductivity

100

DULCOMETER

STOP

START

Type WType D

µs/cm

D1C A

___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___

Please enter the identity code of your device here.

Please completely read through the operating instructions! · Do not discard!

The warranty shall be invalidated by damage caused by operating errors!

Part No. 986954 ProMinent Dosiertechnik GmbH · 69123 Heidelberg · Germany BA DM 138 09/06 GB

1 Device Identification / Identity Code

D1C A DULCOMETER® Controller Series D1C / Version A

Type of mounting

D Control panel installation 96 x 96 mm

W Wall mounting

Operating voltage

0 230 V 50/60 Hz
1 115 V 50/60 Hz
2 200 V 50/60 Hz (only with control panel installation)
3 100 V 50/60 Hz (only with control panel installation)
4 24 V AC/DC

Measured variable

L Conductivity

Connection of measured variable

6 Inductive terminal conductivity measurement cells (0-20/200/2000 µS/cm; 0-20/200/2000 mS/cm)

Correction variable

0 None
2 Temperature via terminal (Pt100)
4 Manual temperature input

Feed forward control

0 None
4 Flow as 0/4-20 mA standard signal and parameter record switching
5 Parameter record switching

Control input

0 None
1 Pause

Signal output

0 None
1 Standard signal 0/4-20 mA measured value
2 Standard signal 0/4-20 mA control variable
3 Standard signal 0/4-20 mA correction variable
42 standard signal 0/4-20 mA outputs, free programmable

Power control

G Alarm and 2 limit value relays
M Alarm and 2 solenoid valve relays
R Alarm relay and servomotor with feedback

0 None
2 Two pumps

Pump control

Control characteristic

0 None
1 Proportional control
2 PID control

Log output

0 None

Language

D German
E English
F French

I Italian
N Dutch
S Spanish
PPolish
ASwedish
B Portuguese
H Hungarian

D1C A

Please enter the identity code of your device here!

2

2 General User Information

Page

1 Device Identification / Identity Code .................................................................................................... 2

2 General User Information ...................................................................................................................... 3

3 Device Overview / Controls................................................................................................................... 4

4 Functional Description .......................................................................................................................... 5

5 Display Symbols .................................................................................................................................... 6

6 Operation diagram ................................................................................................................................ 7

7 Restricted Operating Menu ................................................................................................................... 8

General Layout ............................................................................................................................. 8

Description ................................................................................................................................... 9

8 Complete Operating Menu .................................................................................................................. 13

Overview ..................................................................................................................................... 13

Description ................................................................................................................................. 14

9 Fault/Remarks/Troubleshooting ......................................................................................................... 28

General User Information

These operating instructions describe the technical data and function of the series DULCOMETER® D1C
controller, provide detailed safety information and are divided into clear steps.

IMPORTANT

• Please observe the parts of these operating instructions applicable to your particular
version! This is indicated in the Section “Device Identification / Identity Code”!

• Correct measuring and metering is only possible in the case of impeccable operation of
the sensor. The sensor has to be calibrated / checked regularly!

NOTE

A form “Documentation of controller settings type D1C” is available under
www.prominent.com/documentation_D1C for the purpose of documenting the controller
settings.

3

3 Device Overview / Controls

Conductivity

"Change"

Button

"Branch back"

Button

"Down"

Button

DULCOMETER

STOP

START

Display field
Measured variable
inductive conductivity

Graphic
display

®

"Start/Stop"
Button

"Enter"
Button

®

"Up"
Button

STOP

START

CHANGE Button

To change over within a menu level
and to change from one variable to
another within a menu point.

START/STOP Button

Start/stop of control and metering
function.

ENTER Button

To accept, confirm or save a dis­played value or status. For alarm
acknowledgement.

D1C2-cond.-002-D

UP Button

To increase a displayed numerical
value and to change variables (flashing
display).

BRANCH BACK Button

Back to permanent display or to start
of relevant setting menu.

DOWN Button

To decrease a displayed numerical
value and to change variables (flashing
display).

4

4Functional Description

NOTE

Please refer to the description of the complete operating menu in Section 8 for a detailed
description of the individual characteristics of the DULCOMETER® D1C controller!

4.1 Operating Menu

®

The DULCOMETER
preset and can be changed in the complete operating menu.

The controller is delivered with a restricted operating menu so that the D1C controller can be used
effectively in many applications from the very onset. If adaptations prove to be necessary, all relevant
parameters can then be accessed by switching over to the complete operating menu (see “General
settings”).

4.2 Access Code

Access to the setting menu can be prevented by setting up an access code. The D1C controller is supplied
with the access code 5000 which permits free access to the setting menu. The calibration menu remains
freely accessible even if access to the setting menu is blocked by the code.

4.3 Control

The D1C can operate as a proportional controller or as a PID controller - depending on the device version
(see identity code) and the setting.

The controlled variable is recalculated once a second. Control procedures which require rapid correction of
setpoint deviations (less than approx. 30 seconds) cannot be processed with this controller. The cycle
times must be taken into consideration when activating solenoid valves (pulse length) in the same way as
their running times when activating servomotors (3-point).

Via the control input pause, the control function (selection of controlled variable) can be switched off. The
calculation of the controlled variable starts again after cessation of "pause".

D1C controller permits settings to be made in two different menus. All values are

4.4 Feed Forward Control

The D1C controller can process a signal of a feed forward control. Depending on the device version (see
identity code) and the setting, this signal can be obtained in any form of a 0–20 mA or 4–20 mA signal or as
a digital contact signal with the maximum frequencies 10 Hz or 500 Hz.

This signal can be used, for example, for flow-proportional metering (multiplicative effect) or feed forward­dependent basic load metering (additive effect). The result of control variable calculation from the
proportional or PID control is multiplied by or added to the feed forward signal. A multiplicative feed forward
variable at the level of the set rated value carries over the calculated control variable unchanged into the
controlled variable:

Controlled variable = Feed forward variable/rated value x calculated control variable

During start-up, the zero point has to be checked. The multiplicative feed forward control is not designed
for switching off permanently the actuating variable (signal ≈ 0).

An additive feed forward variable at the level of the rated value results in maximum controlled variable:

Controlled variable (max. 100 %) = Feed forward variable/rated value x max. controlled variable

+ calculated control variable

4.5 Error Messages

Error messages and information are indicated on the bottom line in the permanent display 1. Errors to be

acknowledged (acknowledgement switches off the alarm relay) are indicated by the "

". Errors/notes
which still apply after acknowledgement are indicated alternately. During correction variable processing
(temperature for correction of pH-value), the value is indicated in the same line as the error/note. Faults
which are rectified of their own accord due to changed operating situations are removed from the
permanent display without the need for acknowledgement.

5

5 Display Symbols

The display of the DULCOMETER

®

D1C controller uses the following symbols:

Description Comment Symbol

Limit value transgression Symbol

Relay 1 upper left

Relay 1 lower left

Relay 2 upper right

Relay 2 lower right

Metering pump 1 (Increase conductivity) Symbol

Control off left

Control on left

Metering pump 2 (Reduce conductivity) Symbol

Control off right

Control on right

Symbol

Symbol

Symbol

Symbol

Symbol

Solenoid valve 1 (Increase conductivity) Symbol

Control off left

Symbol

Control on left

Solenoid valve 2 (Reduce conductivity) Symbol

Control off right

Symbol

Control on right

Servomotor

Control, open relay

Control, close relay

Without control

Thickness of bar

Position feedback increases from left to right

during opening.

Stop button pressed

Manual metering

Fault

6

6 Operation diagram

Permanent

display 1

The various menus are selected with
the CHANGE button

The menu is started with
the ENTER button

Permanent

display 2

Various

Setting menus

Access code

NOTE

Access to the setting menus can be barred with the access code!

The number and scope of setting menus depends on the device version!

BRANCH BACK to permanent display
or to relevant setting menu

Access code, correct

Parameter
setting

D1C2-cond.-007-GB

If the access code is selected correctly in a setting menu, the following setting menus are also
accessible!

If within a period of 10 minutes no button is pushed, the unit automatically branches back from
the calibrating menu or a setting menu to the permanent display 1!

BRANCH BACK without
saving setting

BRANCH BACK to
start of setting

Text 1

Selection 1

Text 2

Selection 2

CHANGE from selection to selection

Change numbers or
settings of selection

Variables flash

Text 1

Selection 1

Text 2

Selection 2

ENTER and save setting,
continue to next menu

D1C2-cond.-008-GB

7

7 Restricted Operating Menu / General Layout

The restricted operating menu permits simple operation of the most important parameters. The following
overview shows the settings which can be selected:

µS/cm

100

mea val.
fd. fwd.
reg. val.
w:

meas. parameter
setting ?

calibration cc ?

parameter record
setting ?

100 µS/cm

70 %
59 %

1000 µS/cm

PAR1

Only with parameter record 2

PAR1

Permanent display 1

Permanent display 2
only with control
(w = setpoint)

mr = meas. range
cc = cell constant

calibration cc
probe in buffer!
accept value?
1538 µS/cm 8.54

calibration cc
cc: 8.50 /cm

parameter record

Grenzwert2 oben

5.00 ppm
Grenzwert1 unten

1.00 ppm

PS1

Positive values of setting variable:
Negative values of setting variable:

2000 µS/cm

mr :
cc :

1106 µS/cm 25,0 °C

calibration cc
cc: 8.54 /cm
cond: 100 µS/cm

8.54/cm

mr 2 : 2000 µS/cm
cc 2 : 8.54 /cm

1106 µS/cm 25,0 °C

please wait!

Increase conductivity
Reduce conductivity

Number and scope of

setting menus depends

on the device.

Access to setting menus

can be blocked with

access code.

limit PS1
setting ?

Only with control

control
settings ?

Setting in
complete
operating
menu

general setting
information

limit2 upper

Grenzwert2 oben
1500 µS/cm

5.00 ppm
limit1 lower

Grenzwert1 unten
1000 µS/cm

1.00 ppm

control
regulated value:
positive cond
negative cond

control
normal
current regulat.
value:

30 %

or

control
with dead zone
current regulat.
value:

30 %

or

control
manual
current regulat.
value:

ident-code: D1CA
DxL6xxxxxxxxx
software version
D1C-L0 FW-2.03

30 %

➞

➞

For normal control

setpoint

1000 µS/cm

Control with dead zone

setpoint 2 upper

1500 µS/cm

setpoint 1 lower

1000 µS/cm

Proportional control

ctrl. parameter
xp =

10 %

PID control

ctrl. parameter
xp =

10 %

0 s

Ti =
Td =

0 s

Manual control

manual dosing

15 %

regulated range

input HW:
rev. y
input SW:
xx.xx.xx

alarm relais
active

access c.:
operating menu:

english

=
=

restricted

5000

D1C2-cond.-010-GB

8

Restricted Operating Menu / Description

µS/cm

Permanent display 1

100

mea val.
fd. fwd.
reg. val.

Conductivity calibration

Measurement parameters

meas. parameter
setting ?

100 µS/cm

70 %
59 %

1000 µS/cmw:

Permanent display 2
only with control
(w = setpoint)

Access to all setting menus can be blocked with an access code !

mr = meas. range
cc = cell constant

Positive values of setting variable: Increase conductivity
Negative values of setting variable: Reduce conductivity

D1C2-cond.-011-GB

2000 µS/cm

mr :
cc :

1106 µS/cm 25,0 °C

8.54/cm

mr 2 : 2000 µS/cm
cc 2 : 8.54 /cm

1106

µS/cm 25,0 °C

D1C2-cond.-030-GB

Possible values

Initial value Increment Lower value Upper value Remarks

Cell constant cc depending on 0.0001/cm 0.0060/cm 0.1499/cm cc can be adjusted for

sensor type 0.001/cm 0.150/cm 1.499/cm all mr over the

used 0.01/cm 1.50/cm 12.00/cm complete area

The measured value can be calibrated by changing the cell constant to the actual conductivity value
(arrow keys).

Cell constant calibration (cc)

calibration cc ?

PAR1

calibration cc
probe in buffer!
accept value?
1538 µS/cm 8.54

calibration cc
cc: 8.50 /cm

calibration cc
cc: 8.54 /cm
cond: 100 µS/cm

please wait!

D1C2-cond.-040-GB

9

Restricted Operating Menu / Description

To determine the precise cell constant (cc) of the sensor, place the sensor in a calibration solution (sample 1)
with a known conductivity and select the second menu option. The DULCOMETER® D1C displays the
conductivity it has calculated with the updated parameters. Press Enter when the value is constant.
Select the next menu option and enter the conductivity of the calibration solution (arrow keys). Press Enter.
The D1C displays the recalculated cell constant and saves the value.
The setting menu is inactive when “PAR2“ appears.
During the calibration, the metering is reduced to the set basic load and control stops.
The limit value monitor and the fault diagnosis system are reset. The standard signal of the “measured value“
output is frozen.

Possible values

Initial value Increment Lower value Upper value Remarks

Conductivity Measured value 0.1 µS/cm 0 µS/cm 200 µS/cm Measuring range 200 µS/cm
Calibration 1 µS/cm 0 µS/cm 2000 µS/cm Measuring range 2000 µS/cm
solution (LF) 0.01 mS/cm 0 µS/cm 20 mS/cm Measuring range 20 mS/cm

0.1 mS/cm 0 µS/cm 200 mS/cm Measuring range 200 mS/cm
1 mS/cm 0 µS/cm 2000 mS/cm Measuring range 2000 µS/cm

Parameter record

Only with parameter record 2

parameter record

parameter record
setting ?

PAR1

Grenzwert2 oben

5.00 ppm
Grenzwert1 unten

1.00 ppm

PS1

D1C2-cond.-042-GB

Possible values

Initial value Increment Lower value Upper value Remarks

Parameter record PS1 PS1

PS2

This setting menu can be used to temporarily enable additional parameters of the second parameter record
PAR2 to be edited (in addition to the parameters from the setting menu “measurement parameter setting?“).
I.e. the “limit setting?“ and “mA output 1 (2) setting?“ setting menus are enabled to allow editing of PAR2
(designation PS2) until you exit the series of setting menus from “parameter record“ to “general setting“.

It is possible to switch between the parameter records for operation using the “feed forward control“ contact
input, e.g. during a flushing process (contact open = PAR1, contact closed = PAR2). When switching between
the parameter records, the current parameter record in the setting menu “measurement parameter
setting?”, “limit setting?“ and “mA output 1 (2) setting“ is replaced by the other parameter record
(designation PS1 or PS2).

There is no access to the calibration menus in the case of PAR2 (designation PS2).

NOTE

• The designation PAR1 indicates that the parameter record 1 is actively measuring (contact
input “feed forward control“ e.g. open).
The designation PS1 indicates that the parameter record 1 can be edited.
Exception: The parameter record 1 cannot be edited while it is actively measuring
(designation PAR1). If your controller switches the D1C to parameter set 1 while it is being
edited, the D1C returns to the permanent display.

• PAR2, no control, no standard signal outputs.

10

Restricted Operating Menu / Description

Limit values

Access to all setting menus can be blocked with an access code !

Grenzwert2 oben

limit PS1
setting ?

Type of limit Limit 1: lower lower Limit transgression when
transgression Limit 2: upper upper exceeding or dropping

Limit value Limit 1: 100 µS/cm 0.1 µS/cm -10 µS/cm 210 µS/cm Measuring range 200 µS/cm

Limit 2: 150 mS/cm
Limit 1: 1000 µS/cm 1 µS/cm -100 µS/cm 2100 µS/cm Measuring range 2000 µS/cm
Limit 2: 1500 µS/cm
Limit 1: 10 mS/cm 0.01 mS/cm -1 mS/cm 21 mS/cm Measuring range 20 mS/cm
Limit 2: 15 mS/cm
Limit 1: 100 mS/cm 0.1 mS/cm -10 mS/cm 210 mS/cm Measuring range 200 mS/cm
Limit 2: 150 mS/cm
Limit 1: 1000 mS/cm 1 mS/cm -100 mS/cm 2100 mS/cm Measuring range 2000 mS/cm
Limit 2: 1500 mS/cm

limit2 upper

5.00 ppm

1500 µS/cm
Grenzwert1 unten

limit1 lower

1.00 ppm

1000 µS/cm

D1C2-cond.-014-GB

Possible values

Initial value Increment Lower value Upper value Remarks

off* below value

*only with limit value relay

Control

control
settings ?

Access to all setting menus can be blocked with an access code !

Note: The controlled variable is recalculated every second. Only

suitable for processes with time constants greater than 30 s !

Only with control

Setting in
complete
operating
menu

control
regulated value:
positive cond
negative cond

control
normal
current regulat.
value:

30 %

or

control
with dead zone
current regulat.
value:

30 %

or

control
manual
current regulat.
value:

30 %

➞

➞

Positive values of setting variable: Increase conductivity
Negative values of setting variable: Reduce conductivity

For normal control

setpoint

1000 µS/cm

Control with dead zone

setpoint 2 upper

1500 µS/cm

setpoint 1 lower

1000 µS/cm

Proportional control

ctrl. parameter
xp =

PID control

ctrl. parameter
xp =

10 %
Ti =
Td =

0 s
0 s

Manual control

manual dosing

15 %

regulated range

10 %

D1C2-cond.-015-GB

11

Restricted Operating Menu / Description

Possible values

Initial value Increment Lower value Upper value Remarks

Setpoint 100 µS/cm 0,1 µS/cm -10 µS/cm 210 µS/cm Measuring range 200 µS/cm

1000 µS/cm 1 µS/cm -100 µS/cm 2100 µS/cm Measuring range 2000 µS/cm

10 mS/cm 0,01 mS/cm -1 mS/cm 21 mS/cm Measuring range 20 mS/cm

100 mS/cm 0,1 mS/cm -10 mS/cm 210 mS/cm Measuring range 200 mS/cm

1000 mS/cm 1 mS/cm -100 mS/cm 2100 mS/cm Measuring range 2000 mS/cm

Control with dead zone

2 setpoints necessary

Setpoint 2 ≥ Setpoint 1

Adjustment of measuring

range on page 9/14

Control parameter xp 10 % 1 % 1 % 500 % xp referred to measuring range
Control parameter Ti off 1 s 1 s 9999 s Function off = 0 s
Control parameter Td off 1 s 1 s 2500 s Function off = 0 s
Manual metering 0 % 1 % -100 % +100 %

Abbreviations for control variables:

xp: 100 %/Kp (inverse proportional coefficient)

: Integration time of I-controller (s)

T

i

Td: Differential time of D-controller (s)

General settings

Access to all setting menus can be blocked with an access code !

general setting
information

ident-code: D1CA
DxL6xxxxxxxxx
software version
D1C-L0 FW-2.03

Possible values

Initial value Increment Lower value Upper value Remarks

Alarm relay active active

not active

Access code 5000 1 1 9999

Language as per as per

identity code identity code

Operating menu restricted restricted

complete

input HW:
rev. y
input SW:
xx.xx.xx

alarm relay
active

access c.:
operating menu:

english

=
=

restricted

5000

D1C2-cond.-016-GB

12

8 Complete Operating Menu / Overview

All parameters of the controller can be set in the complete operating menu (see previous page). The
following overview shows the settings which can be selected:

µS/cm

Permanent display 1

100

mea. val.:
fd. fwd.:
reg. val.:
w: 1000 µS/cm

meas. parameter
setting ?

cali. zero point ?

calibration cc ?

calibration α
cc :
α :

install. factor
setting ?

100 µS/cm

70 %

-59 %

PAR1

PAR1

8,54/cm

1,90 %/°C

PAR1

Permanent display 2
only with control
(w = setpoint)

Number and scope of setting menus

depends on the device.

Access to setting menus can

be blocked with access code.

limits PS1
setting ?

servomotor
setting ?

Only with
servomotor

type of sensor
setting ?

correction value
setting ?

pumps
setting ?

relays
setting ?

parameter record
setting ?

PAR1

Only with correction
variable

Only with pumps

Only with limit value
relay, solenoid valve
relay or servomotor

control
setting ?

feed forward ctrl.
setting ?

mA output 1 PS1
setting ?

mA output 2 PS1
setting ?

general setting
information

Only with control

Only with feed
forward control

Only with standard
signal output

Only with 2 stand­ard signal outputs

D1C2-cond.-017-GB

13

Complete Operating Menu / Description

µS/cm

100

mea. val.
fd. fwd.
reg. val.

Measuring parameter

100 µS/cm

70 %
59 %

1000 µS/cmw:

Access to all setting menus can be blocked with an access code !

meas. parameter
setting ?

Permanent display 1

Permanent display 2
only with control
(w = setpoint)

mr: meas. range
cc: cell constant
α: temperature-

coefficient

Positive values of setting variable: Increase conductivity
Negative values of setting variable: Reduce conductivity

D1C2-cond.-018-GB

mr :
cc :
α :

15 mS/cm 23,8 °C

20 mS/cm

8,54/cm

1,90%/°C

mr (2) : 200 µS/cm
cc (2) : 1,120 /cm
α : 1,90%/°C
1106 µS/cm 25,0 °C

D1C2-cond.-036-GB

Possible values

Initial value Increment Lower value Upper value Remarks

Measuring ranges mr 0....2000 µS/cm 0....200 µS/cm At mr 2: 0 = off

0....2000 µS/cm (parameter record

0....20 mS/cm switching)

0....200 mS/cm Setpoint- and limit

0....2000 mS/cm values are switched

to the associated

initial values

Cell constant cc depending on 0.0001/cm 0.0060/cm 0.1499/cm cc can be adjusted

the sensor type 0.001/cm 0.150/cm 1.499/cm for all mr over the

used 0.01/cm 1.50/cm 12.00/cm complete area

Temperature coefficient α 1.90 %/°C 0.01 %/°C0 %/°C 10 %/°C

The measured value can be compensated for by changing the cell constant to the actual conductivity value
(arrow keys!). The precondition is a known temperature coefficient and constant temperature.

Metering and control stops if the measurement range is changed.

Setpoints, limit values and standard signal outputs are switched to the associated starting values. Check
the settings in all menus.

The parameter sets are described on page 21.

14

Complete Operating Menu / Description

Calibration of zero point (zp)

cali. zero point ?

PAR1

cali. zero point
probe in air!
accept value?
12 µS/cm

please wait!

D1C2-cond.-039-GB

To determine the precise zero point (zp) of the sensor, hold the sensor in the air and select the second
menu option. The DULCOMETER® D1C displays the conductivity without zero point correction. Press
Enter when the value is constant.
The setting menu is inactive when “PAR2“ appears.
During the calibration, the metering is reduced to the set basic load and control stops. The limit value
monitor and the fault diagnosis system are reset. The standard signal of the “measured value“ output is
frozen.

Cell constant calibration (cc)

calibration cc ?

PAR1

calibration cc
probe in buffer!
accept value?
1538 µS/cm 8.54

calibration cc
cc: 8.50 /cm

calibration cc
cc: 8.54 /cm
LF: 100 µS/cm

please wait!

D1C2-cond.-043-GB

To determine the precise cell constant (cc) of the sensor, place the sensor in a calibration solution
(sample 1) with a known conductivity and select the second menu option. The DULCOMETER® D1C
displays the conductivity which it has calculated with the current parameters. Press Enter when the value
is constant.
Select the next menu option and enter the conductivity of the calibration solution (arrow keys). Press Enter.
The D1C displays the recalculated cell constant and saves the value.
The setting menu is inactive when “PAR2“ appears.
During the calibration, the metering is reduced to the set basic load and control stops. The limit value
monitor and the fault diagnosis system are reset. The standard signal of the “measured value“ output is
frozen.

Possible values

Initial value Increment Lower value Upper value Remarks

Conductivity Measured value 0.1 µS/cm 0 µS/cm 200 µS/cm Measuring range 200 µS/cm
Calibration 1 µS/cm 0 µS/cm 2000 µS/cm Measuring range 2000 µS/cm
solution (LF) 0.01 mS/cm 0 µS/cm 20 mS/cm Measuring range 20 mS/cm

0.1 mS/cm 0 µS/cm 200 mS/cm Measuring range 200 mS/cm
1 mS/cm 0 µS/cm 2000 mS/cm Measuring range 2000 µS/cm

15

Complete Operating Menu / Description

Calibration of temperature coefficient α

The temperature coefficient α is determined again by means of a two point calibration. During the
calibration, the metering is reduced to the set basic load and control stops. The limit value monitor and the
fault diagnosis system are reset. The standard signal of the measured value or correction value output is
reduced to 0/4 mA.

IMPORTANT

Only values determined at 25 °C may be entered as conductivity values. The calibration
must be carried out with the same solution at both temperatures.

Access to all setting menus can be blocked with an access code !

calibration α
cc :
α :

8,54/cm

1,90 %/°C

PAR1

calibration at
temperature 1
probe in buffer !
1538 23,8 °C

calibration at
temperature 2
probe in buffer !
1500 48,5 °C

calibration α

cc :
α :

8,50/cm
2,52 %/°C

calibration at
temperature 1
accept value ?
1538 23,8 °C

calibration at
temperature 2
accept value ?
1500 48,5 °C

calibration
value:
temp1

calibration
value:
temp1
temp2

23,8 °C

23,8 °C
48,5 °C

permanent display 1

Possible values

Initial value Increment Lower value Upper value Remarks

Set temperature Correction value 0.1 °C0 °C 100 °C

Error message/Warning Condition Remarks

Temperature range restricted For the chosen temperature

xx – 100 °C coefficient α, a correct reading

can only be obtained for the

displayed temperature range

1500

1500

D1C2-cond.-032-GB

Temperature interval incorrect ∆ temperature ≥ 10.0 °C

16

∆ temperature ≤ 50.0 °C

Complete Operating Menu / Description

Installation factor setting

install. factor
setting ?

install. factor

1.00

100 µS/cm

D1C2-cond.-041-GB

Possible values

Initial value Increment Lower value Upper value Remarks

Installation factor 1.00 0.01 0.01 9.99

Enter the installation factor of the installed sensor here (arrow keys!). Determine the installation factor using
the data from the sensor documentation and the installation geometry.

Type of sensor setting

type of sensor
setting ?

type of sensor :
ICT 1
sensor data
are changed!

D1C2-cond.-044-GB

Possible values

Initial value Increment Lower value Upper value Remarks

Type of sensor ICT 1 ICT 1 The default

ICT 1-IMA actuation parameters
ICT 2 / CLS50 are loaded
ICT 3 / CLS52

When changing the sensor, press Enter to load the actuation parameters permanently stored in

®

DULCOMETER

D1C for this sensor type. Metering and control stop and the measured value-specific error

messages are deleted.

IMPORTANT

• The limit values, the setpoints and the standard signal outputs are set to the default
values.

• Check the settings in all menus!

17

Complete Operating Menu / Description

Correction value

Access to all setting menus can be blocked with an access code !

only with correction variable

correction value
setting ?

Type of temperature as per manual
compensation identity code automatic

Manual temperature 25 °C 0.1 °C -199.9 °C 199,9 °C

correction value
calibration temp.

automatic

33,0 °C

Possible values

Initial avalue Increment Lower value Upper value Remarks

off

D1C2-cond.-034-GB

Automatic temperature Correction value 0.1 °C -5.0 °C 5,0 °C by the temperature

measured value

Pumps

Access to all setting menus can be blocked with an access code !

only with pumps for control

pump
setting ?

control

pump 1 cond
pump 2 cond

➞

➞

Possible values

Initial value Increment Lower value Upper value Remarks

Max. stroke/minute of 180 1 1 500 off = 0 strokes/min
pumps 1 and 2

dosing pump max.
pump 1:
pump 2:

180
180

pulse/minute

D1C2-cond.-022-GB

18

Complete Operating Menu / Description

Relay for power control

Access to all setting menus can be blocked with an access code !

only with limit value relay, solenoid valve relay or servomotor

relay
setting ?

relay adjustment
relay1:
relay2:

SV1
SV2

control cond.
solenoid valves
SV1 cond
SV2 cond

➞

➞

solenoid value 1
cond

➞

period
min. time

10 s

1 s

solenoid value 2

➞

cond
period
min. time

10 s

1 s

D1C2-cond.-023-GB

Possible values

Initial value Increment Lower value Upper value Remarks

Relay adjustment as per Motor *At "limit value" the

identity code Solenoid valve (SV1, SV2) relays remain active

Limit value (Limit 1/2) even with a fault.

Actuator 1,2

Servomotor

off
Cycle 10 s 1 s 10 s 9999 s for solenoid valve
min. time 1 s 1 s 1 s cycle/2 for solenoid valve

NOTE

The limit value relays can also be defined such that they react like an actuator. If e.g. a limit value
relay picked up, it will drop at a closed pause contact or for a subsequent delay time t

(if td > 0 min

d

is set in “General settings”).

19

Complete Operating Menu / Description

Cycle

Solenoid
valve

on

off

on

off

The switching time of the DULCOMETER® D1C (solenoid valve) depends on the actuating variable and the
“min. time“ (smallest permitted operating factor of the connected device).
The actuating variable determines the ratio ton/cycle and thus the switching times (see fig. above).
The “min. time“ influences the switching times in two situations:

a) theoretical switching time < min. time:

Cycle

min. time

on

off

Cycle

on

off

t

on

t

on

Cycle

Cycle

Cycle

Cycle

Cycle

min. time

min. time

Actuating
variable: 80 %
t

on

Cycle

t

Actuating
variable: 50 %
t

on

Cycle

t

theoretical

t

actual

t

= 0.80

= 0.50

The DULCOMETER® D1C does not switch for a certain number of cycles until the sum of the theoretical
switching times exceeds the “min. time“. Then the DULCOMETER® D1C switches for the duration of this
total time.

b) theoretical switching time > (cycle - min. time) and calculated switching time < cycle

Cycle

min. time

on

off

Cycle

on

off

Cycle

Cycle

Cycle

Cycle

min. time

theoretical

t

actual

t

The DULCOMETER® D1C does not deactivate for a certain number of cycles until the differences between
cycle and theoretical switching time exceed the "min. time".

20

Complete Operating Menu / Description

Parameter record

only with parameter record 2

parameter record

parameter record
setting ?

PAR1

Parameter record PS1 PS1

This setting menu can be used to temporarily enable additional parameters of the second parameter record
PAR2 to be edited (in addition to the parameters from the setting menu “measurement parameter
setting?“). I.e. the “limit value setting“ and “mA output 1 (2) setting?“ setting menus are enabled to allow
editing of PAR2 (designation PS2!) until you exit the series of setting menus from “parameter record“ to
“general setting“.
It is possible to switch between the parameter records for operation using the “feed forward control“
contact input, e.g. during a flushing process (contact open = PAR1, contact closed = PAR2). When
switching between the parameter records, the current parameter record in the setting menus “meas.
parameter setting?”, “limit setting?“ and “mA output 1 (2) setting“ is replaced by the other parameter
record (designation PS1 or PS2).
There is no access to the calibration menus in the case of PAS2 (designation PS2!).

Grenzwert2 oben

5.00 ppm
Grenzwert1 unten

1.00 ppm

PS1

D1C2-cond.-045-GB

Possible values

Initial value Increment Lower value Upper value Remarks

PS2

NOTE

• The designation PAR1 indicates that the parameter record 1 is actively measuring (contact
input “feed forward control“ e.g. open).
The designation PS1 indicates that the parameter record 1 can be edited.
Exception: The parameter record 1 cannot be edited while it is actively measuring (designation
PAR1). If your controller switches the D1C to parameter record 1 while it is being edited, the
D1C returns to the permanent display.

• PAR2, no control, no standard signal outputs.

21

Complete Operating Menu / Description

Limit values

Access to all setting menus can be blocked with an access code !

limit 1

1000 µS/cm

limits PS1
setting ?

lower

limit 2

1500 µS/cm

upper

Only with limit value relay

0 s
0 s

lower

limit 2

1500 µS/cm

∆t on
∆t off

limit 1
time:
limit 2
time:

0 s
0 s

0 s

0 s

upper

max.

max.

hysteresis
limits:
checkout time
limits:

10 µS/cm

off

D1C2-cond.-024-GB

limit 1

1000 µS/cm

∆t on
∆t off

Possible values

Initial value Increment Lower value Upper value Remarks

Type of limit Limit 1 lower upper Limit transgression when
transgression Limit 2 upper lower exceeding or dropping

off* below value.

*only with limit value relay

Limit value1; Limit value 2 0; 2000 mS/cm 1 mS/cm -100 mS/cm 2100 mS/cm Meas. range 2000 mS/cm

0; 200 mS/cm 0.1 mS/cm -10 mS/cm 210 mS/cm Meas. range 200 ms/cm

0; 20 mS/cm 0.01 mS/cm -1 mS/cm 21 mS/cm Meas. range 20 ms/cm

0; 2000 µS/cm 1 µS/cm -100 µS/cm 2100 µS/cm Meas. range 2000 µs/cm

0; 200 µS/cm 0.1 µS/cm -10 µS/cm 210 µS/cm Meas. range 200 µs/cm

Hysteresis limit values 10 mS/cm 1 mS/cm 0 mS/cm 2100 mS/cm Effective in direction of

1 mS/cm 0.1 mS/cm 0 mS/cm 210 mS/cm ” Cancelling limit trans-

0.1 mS/cm 0.01 mS/cm 0 mS/cm 21 mS/cm gression”
10 µS/cm 1 µS/cm 0 µS/cm 2100 µS/cm

1.0 µS/cm 0.1 µS/cm 0 µS/cm 210 µS/cm

Checkout time limits t on off 1 s 1 s/off 9999 s Results in message and

alarm.

off = 0 s:
Function switched off,
no message, no alarm

Switch-on delay 0 s 1 s 0 s 9999 s Only available in
∆ t on complete operating menu

Switch-off delay 0 s 1 s 0 s 9999 s Only available in
∆ t off complete operating menu

Max. switch-on time off 1 s 0 s/off 9999 s Only available in
Limit value 1; complete operating menu
Limit value 2 Function switched off

If the limit transgression is longer than the “delay time limit value“, an error message is triggered (requires
acknowledgement) and the alarm relay opens; if “control“ is also set to “off“, the control process will stop.

22

Complete Operating Menu / Description

Servomotor

The operating range is given by the overall resistance range of the feedback potentiometer. Defining the
control range places a maximum limit on the control range used.

IMPORTANT

• The servomotor must be actuated with the same care as for the calibration of a measuring
sensor.

• To ensure correct function, the control duration of the servomotor must be at least
25 seconds for 0...100 % of the control range.

Access to all setting menus can be blocked with an access code !

only with servomotor

servomotor
setting ?

servomotor

setting

current position:

servomotor
open

servomotor
open
please wait !

servomotor
opened !
Value take over ?

servomotor
OK
current position:

Possible values

Initial value Increment Lower value Upper value Remarks

Servomotor Setting Setting

ok
off

Control direction Cond. Cond.

Cond.

servomotor
close ?

dosing
control range:
0 % to
operating range

cond

100 %

servomotor
closed
please wait !

servomotor
closed !
value take over ?

➞

= automatic timing

D1C2-cond.-025-GB

Control range 100 % 1 % 10 % 100 % in % of

NOTE

• When the wide bar is as far right as it will go, the servomotor is fully open.

• The permanent display shows to what degree the motor has opened in % (the greater the
percentage, the farther open the servomotor).

operating range

23

Complete Operating Menu / Description

Control

Access to all setting menus can be blocked with an access code !

Note: The controlled variable is recalculated every second. Only

suitable for process with time constants greater than 30 s !

control
settings ?

Only with control

control
regulated value:

positive cond
negative cond

control

normal
current regulat.
value:

30 %

➞

➞

Positive values of setting variable:
Negative values of setting variable:

For normal control

setpoint

1000 µS/cm

Control with dead zone

setpoint 2 upper

1500 µS/cm

setpoint 1 lower

1000 µS/cm

Control manual

manual dosing

15 %

regulated range

Increase conductivity
Reduce conductivity

Proportional control

ctrl. parameter
xp =

PID control

ctrl. parameter
xp =

10 %
Ti =
Td =

additional load:

10 %

regulated range

Possible values

Initial value Increment Lower value Upper value Remarks

10 %

10 s

0 s

D1C2-cond.-026-GB

Control normal normal When controlling with dead

with dead zone zone, the regulated value is

manual not used for measured values

within the dead zone

Setpoint setting 1000 mS/cm 1 mS/cm -100 mS/cm 2100 mS/cm Measuring range 2000 mS/cm*

100 mS/cm 0.1 mS/cm -10 mS/cm 210 mS/cm Measuring range 200 mS/cm

10 mS/cm 0.01 mS/cm -1 mS/cm 21 mS/cm Measuring range 20 mS/cm

1000 µS/cm 1 µS/cm -100 µS/cm 2100 µS/cm Measuring range 2000 µS/cm

100 µS/cm 0.1 µS/cm -10 µS/cm 210 µS/cm Measuring range 200 µS/cm

Setpoint 2 ≥ setpoint 1

Control parameter xp 10 % 1 % 1 % 500 % xp referred to measuring range

Control parameter Ti off 1 s 1 s 9999 s Function off = 0 s

Control parameter Td off 1 s 1 s 2500 s Function off = 0 s

Additional basic load 0 % 1 % -100 % +100 %

Manual metering 0 % 1 % -100 % +100 %

Abbreviations for control variables:

xp: 100 %/Kp (inverse proportional coefficient)

: Integration time of I-controller (s)

T

i

Td: Differential time of D-controller (s)

24

Complete Operating Menu / Description

Feed forward control

feed forward ctrl.
setting ?

feed forward ctrl.
Hz / mA
10 Hz

feed forward ctrl.:
rated value:

10.00 Hz

feed forward ctrl.
effect:

additive

feed forward ctrl.
max. additive

regulated value

100 %

D1C2-cond.-035-GB

Possible values

Initial value Increment Lower value Upper value Remarks

Feed forward control as per none Signal processing:
(flow) identity code at 10 Hz Signal < 0,2 mA = No flow

standard signal 500 Hz Signal < 4,2 mA = No flow

0...20 mA

4...20 mA

Feed forward control 20 mA 0.01 mA 0/4 mA 20 mA Depending on signal type.
rated value 10 Hz 0.01 Hz 0.1 Hz 10 Hz Maximum limitation of

500 Hz 1 Hz 5 Hz 500 Hz range used.

Feed forward control multiplicative multiplicative
Feed forward effect additive

Max. additive regulated 100 % 1 % -500 % +500 % Only with additive
value regulated value.

Standard signal output 1

Access to all setting menus can be blocked with an access code !

only with standard signal output

mA output 1 PS1
setting ?

mA output 1

measured value

0…20 mA

Control with standard signal

control
regulated value:
positive cond
negative cond

mA output 1
measured value
0 mA =
20 mA =

mA output 1
correction value
0 mA =

20 mA =

➞

➞

0,0 mS/cm

200.0 mS/cm

0.0 °C

100.0 °C

mA output 1
regulated value

0 mA =
20 mA =

0%

100%

D1C2-cond.-027-GB

25

Complete Operating Menu / Description

Standard signal output 2

Access to all setting menus can be blocked with an access code !

Access to all setting menus can be blocked with an access code !

Control with standard signal

control

Only with 2 standard signal outputs

mA output 2 PS1
setting ?

mA output 2

measured value

0…20 mA

Possible values

Initial value Increment Lower value Upper value Remarks

regulated value:

positive cond
negative cond

mA output 2
measured value

0 mA =
20 mA =

mA output 2
correction value
0 mA =

20 mA =

➞

➞

0 mS/cm

200.0 mS/cm

0.0 °C

100.0 °C

mA output 2

regulated value
0 mA =

20 mA =

0%

100%

D1C2-cond.-037-GB

Variable allocation as per identity Measured value

code Controlled variable If control is present

Correction value

off

Output range 0…20 mA 0…20 mA No setting in case of PAR2

4…20 mA

3.6/4-20 mA Reduction to 3.6 mA
when alarm relay switches

(not limit value violation)

Range measured 0–200 µS/cm 0.1 µS/cm -10 µS/cm 210 µS/cm at meas. range up to 200 µS/cm
value 0–2000 µS/cm 1 µS/cm -100 µS/cm 2100 µS/cm at meas. range up to 2000 µS/cm

0–20 mS/cm 0.01 mS/cm -1 mS/cm 21 mS/cm at meas. range up to 20 mS/cm

0–200 mS/cm 0.1 mS/cm -10 mS/cm 210 mS/cm at meas. range up to 200 mS/cm

0-2000 mS/cm 1 mS/cm -100 mS/cm 2100 mS/cm at meas. range up to 2000 mScm

Range regulated 0 %…+100 % 1 % -100 % +100 % Minimum range 1 %
value No setting in case of PAR2

Range correction 0…100,0 °C 0,1 °C 0,0 °C 100 °C Minimum range 1 %
variable -199.9 °C +199.9 °C No setting in case of PAR2

General setting

Access to all setting menus can be blocked with an access code !

general setting
information

ident-code: D1CA
DxL6xxxxxxxxx
software version
D1C-L0 FW-2.03

26

input HW:
rev. y
input SW:
xx.xx.xx

control input
– active closed
– parameter set 2

alarm relay

active

acces c.:
operating menu:
=

english
complete

=

5000

pause normal
– active...closed
– alarm off
– td: 0 min

D1C2-cond.-028-GB

Complete Operating Menu / Description

Possible values

Initial value Increment Lower value Upper value Remarks

Alarm relay active active

not active

Pause normal normal

hold

Control input pause active closed active closed

active open

Alarm pause Alarm off Alarm off Alarm relay can be

Alarm on activated by pause

contact
Pause 0 min 1 min 0 min 60 min
Time delay td

Input control active closed active closed Switch status for
Input active open parameter record 2

Only with parameter

record switching

Control input Parameter set 2 Parameter set 2 off = parameter set
Function off switching off

Only with parameter

record switching

Access code 5000 1 1 9999
Language as per as per

identity code identity code

Operating menu complete restricted

complete

Normal pause

If the pause switch is off, the DULCOMETER® D1C sets the operating outputs to “0“ for as long as the
pause switch is off or for a set time delay td (if td is set to > 0 min). Whilst the pause switch is off, the
DULCOMETER® D1C establishes the P-proportion in the background.
With PID-control (identity code characteristics “control characteristic“ : 2): the I-porportion is stored when
the pause is switched off (I-porportion then usually only present if Ti > 0 has been selected in the “control
setting?“ setting menu).
Exception: the standard signal outputs mA for the measured value or correction value are not affected by
the pause.
After pause is activated, the operating outputs remain at “0“ for the length of the time delay td. The time
delay td must be set up in such a way that in this time e.g. sample water (process-specific current
concentration) flows to the sensor.
With PID-control (identity code characteristics “control characteristic“: 2): The control variable output
resulting from the pause and the expiry of the time delay td is reconciled jointly with the current
P-component and (if Ti is set > 0) with the stored I-component.

Pause hold

If the pause switch is off, the DULCOMETER

®

D1C freezes the operating output at the most recent value
for as long as the pause switch is off or for a set time delay td (if td is set to > 0 min). Whilst the pause
switch is off, the DULCOMETER® D1C establishes the P-proportion in the background.
With PID-control (Identity code characteristics “control characteristic“ : 2):
Even the mA standard signal outputs for measured value or correction value are frozen.
After pause is activated, the operating outputs remain frozen for the length of the time delay td. The time
delay td must be set up in such a way that, in this time e.g. sample water (process-specific current
concentration) flows to the sensor.
With PID-control (identity code characteristics “control characteristic“: 2): The control variable output
resulting from the pause and the expiry of the time delay td is reconciled jointly with the current
P-proportion and (if Ti is set > 0) with the newly established I-proportion.

27

9 Fault / Remarks / Troubleshooting

Calibration

Calibration

with error

During servomotor setting

Position feedback

Upper position <40 % max. value

Lower position >30 % range

Stop button

Check measurement

Final value high

Check direction

Final value low

range

Stop

Basic load Stop ––Repeat calibration

Stop Stop no Relay drops out –

Operating step Note text Symbol Effect

Pause contact

Control input

Parameter set 2

Pause/Hold

Pause

on metering on control

Stop Stop no/yes No further fault check –

Stop Stop no

Electronic error

position not reached

amplifier defective,

LF cable defective,

check SPI

System error

defective

Basic load Stop yes

Stop Stop yes Electronic data defective Call customer service

Limit value violation

Servomotor

after control time

mS-limit 1

mS-limit 2

Servomotor

↑↓

↑↓

Feed forward control

Signal exceeded/drops below value

Signal below value, multiplicative

Check feed forward

input

"

Signal exceeded/drops below value

Upper Te. limit value exceeded

Te. limit value

Check Te. input

↑ Basic load Stop yes at α ≥ 4 %/°C

Basic load Stop yes Signal <3.8 ±0.2 mA Check sensor, transformer

Checkout time exceeded*

Correction measured variable

Check mS probe

Basic load Stop yes Function detachable Check sensor function,

Error Fault text Symbol Effect

Measured value

Signal exceeded/drops below value*

mS measurement

Check mS input

range

↑↓ Basic load Stop yes outside range setting

on metering on control

Basic load Stop yes Measured value Check measured variable

adjustment, the last valid and relay connection

values are still used Set correct servomotor

Without correct Check potentiometer

operating range

solution

Stop no/yes

Check sensor/calibration

Alarm with ack-

nowledgement

Comment Remedy

Stop yes The last valid value

yes closes Check servomotor

yes Function detachable Define cause

Servomotor

is used

Reset values if necessary

yes Signal <3.0 ±0.2 mA Check sensor, transformer

or >23 ±0.2 mA and cable connection

or >23 ±0.2 mA and cable connection

extend control time

Check sensor and cable

connection

Alarm with ack-

nowledgement

Remarks Remedy

©2004 ProMinent Dosiertechnik GmbH · 69123 Heidelberg · Germany

Operating Instructions DULCOMETER

ProMinent Dosiertechnik GmbH · Im Schuhmachergewann 5-11 · 69123 Heidelberg · Germany

28

®

D1C, Part 2 Inductive Conductivity

Subject to modifications · Printed in Germany

Phone: [phone] · Fax: 842-419

[e-mail] · www.prominent.com