ProMinent DULCOMETER D2C User manual

Please completely read through operating instructions! •Do not discard!
The operator shall be liable for any damage caused
by installation or operating errors!
Please enter the identity code of your device here!
D2C A ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
Operating Instructions
DULCOMETER®D2C
Part 2: Adjustment and Operation,
Measured Variables chlorine/chlorine
ProMinent®
D2C2-001-chlorine/chlorine-GB
Part No. 986846 ProMinent Dosiertechnik GmbH · 69123 Heidelberg · Germany BA DM 169 10/08 GB
Typ WTyp D
STAR
T
STOP
DULCOMETER
CI
2
/
CI
2
0.20
ppm
∆CI
0.50
ppm
CLE
CI
2
/Cl
2
0.20
ppm
∆CI
STAR
T
STOP
DULCOMETER
0.50
ppm
CLE
BA_DM_169_10_08_GB.p65 27.10.2008, 8:50 Uhr1

2
1 Device Identification / Identity Code
D2C A
Please enter the identity code of your device here!
D2C A DULCOMETER®controller Series D2C
WWall mounting
DPanel mounting (96 x 96 mm)
Operating voltage
0230 V 50/60 Hz
1115 V 50/60 Hz
424 V AC/DC
Measured variable 1/Measured variable 2
CC Chlorine/Chlorine (0...2/5/10 ppm)
Connection of measured variable 1 (connection measured variable 2: 4-20 mA)
1Terminal standard signal 4–20 mA (signal converters are necessary)
Correction variable (Temperature for pH)
0None
Disturbance variable connection
0None
Signal output
0None
42Standard signal outputs 0/4-20 mA, free programmable
Power control
GAlarm and 2 limit relay
MAlarm and 2 solenoid valve relays
(pulse length control)
Control characteristic
1Proportional control
2PID control
Protocol output
0None
Language
DGerman
EEnglish
FFrench
SSpanish
ASwedish
NDutch
BA_DM_169_10_08_GB.p65 27.10.2008, 8:50 Uhr2

3
2General 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 Operating ................................................................................................................................................. 7
7 Operating Menu / Overview ..................................................................................................................... 8
8 Operating Menu / Description ............................................................................................................... 12
9 Technical Terms ..................................................................................................................................... 22
10 Faults / Notes / Troubleshooting ........................................................................................................... 23
General User Information
These operating instructions describe the technical data and function of the series DULCOMETER®D2C
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 dosing is only possible in the case of impeccable operation of the
probe. The probe has to be calibrated/checked regularly!
•In the event of a probe failure, uncontrolled chemicals addition may result. We therfore
recommend urgently to activate “check out time limits” with automatic control shut-off!
BA_DM_169_10_08_GB.p65 27.10.2008, 8:50 Uhr3

4
®
DULCOMETER®
STOP
START
Graphic display
"Start/Stop"
button
"Enter"
button
"Up"
button
"Change"
button
"Down"
button
"Branch back"
button
Display field
Measured variable
chlorine/chlorine
CI2/CI2
3Device Overview / Controls
D2C2-002-chlorine/chlorine-GB
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).
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 acknow-
ledgement.
STOP
START
BA_DM_169_10_08_GB.p65 27.10.2008, 8:50 Uhr4

5
4Functional Description
NOTE
Please refer to the description of the operating menu for a detailed description of the
individual characteristics of the DULCOMETER®D2C controller!
4.1 Operating Menu
The DULCOMETER®D2C controller permits settings to be made in two different menus. All values are
preset and can be changed in the complete operating menu.
The controller is delivered with a restricted operating menu so that the D2C 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.
4.2 Access Code
Access to the setting menu can be prevented by setting up an access code. The D2C controller is supplied
with the access code 5000 which permits free access to the setting menu. The calibration menu remains
freely accessible even when access to the setting menu is blocked by the code.
4.3 Control
The D2C can operate as a proportional controller or as a PID controller - dependent 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 solenoid
valve control (pulse on-time) must take account of the cycle times.
The control function (reference variable output) can be switched off through the pause function and the
water control input. The calculation of the regulated variable starts again with the cessation of the "pause"
after expiry of the adjustable delay time "td". No fault treatment is performed with active "pause" function.
4.4 Fault messages
Faults to be acknowledged are shown in the permanent displays by the symbol " ". The corresponding
fault messages and notes are shown in the permanent display 2. Faults/notes continuing after
acknowledgement are shown alternatively. Faults automatically remedied throught changing operating
conditions are removed from the permanent display without necessitating acknowledgement. Chapter 10
includes an overview of fault messages and causes.
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6
5Display Symbols
The display of the DULCOMETER®D2C controller uses the following symbols:
Symbol Description Comment
Limit value transgression measured value 1 Symbol
Relay 1 upper or zone left
Symbol
Relay 1 lower left
Limit value transgression measured value 2 Symbol
Relay 2 upper or zone right
Symbol
Relay 2 lower right
Metering pump measured value 1 Symbol
Control off left
Symbol
Control on left
Metering pump measured value 2 Symbol
Control off right
Symbol
Controll on right
Solenoid valve measured value 1 Symbol
Controll off left
Symbol
Controll on left
Solenoid valve measured value 2 Symbol
Controll off right
Symbol
Control on right
Stop button pressed
Manual metering
pause Delay time "td" Control starts after
expiry of "td"
Fault
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7
6Operation
Selection 1
Selection 2
CHANGE from selection to selection
Change numbers or
settings of selection
Variables flash
ENTER and save setting,
continue to next menu
BRANCH BACK without
saving setting
BRANCH BACK to
start of setting
Text 1
Text 2
Text 1
Text 2
Selection 1
Selection 2
Access code, correct
Parameter
setting
Calibration notes
Permanent
display 1
Permanent
display 4
Calibration
menu
Various
Access code
Setting menus
The various menus are
selected with the CHANGE
button
The menu is started with
the ENTER button
BRANCH BACK to
permanent display or to
relevant setting menu
Permanent
display 2
Permanent
display 3
NOTE
Access to the setting menus can be barred with the access code!
The number and scope of setting menus is dependent on the device version!
If the access code is selected correctly in a setting menu, then 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.
D2C2-007-chlorine/chlorine GB
D2C2-008-chlorine/chlorine-GB
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8
7Operating Menu / Overview
limits
setting ?
0.50
0.20
free CL 0.50 ppm
comb. CL 0.20 ppm
total CL 0.70 ppm
stop key
calibration ?
calibration
end
cal. total chlor.
zero p.: 4.00 mA
slope:
6.00 mA/ppm cal. total chlor.
zero point
1.28 ppm
cal. total chlor.
DPD4-value:
0.45 ppm
ppm o
CLE
ppm
∆Cl
free CL 0.50 ppm
s. point 0.40 ppm
ctrlout 50 %
comb. CL 0.20 ppm
s.point 0.20 ppm
ctrlout 0 %
total CL 0.70 ppm
cal. free chlor.
zero p.: 4.00 mA
slope:
6.00 mA/ppm cal. free chlor.
zero p.: 4.00 mA
slope:
6.01 mA/ppm
cal. total chlor.
zero p.: 4.00 mA
slope:
6.01 mA/ppm
cal. total chlor.
zero point
value take over?
4.01 mA
limit
free chlorine
hysteresis
limits: 0.04 ppm
checkout time
limits: off
Only with limit value relay
LV-relay 1: LV1
- active closed
∆t on 0 s
∆t off 0 s
LV-relay 2: LV2
- active closed
∆t on 0 s
∆t off 0 s
limit
comb. chlorine
hysteresis
limits: 0.04 ppm
checkout time
limits: off
cal. total chlor.
DPD4-value
0.45 ppm
cal. free chlor.
DPD1-value
0.45 ppm
cal. free chlor.
DPD1-value
0.45 ppm
cal. free chlor.
zero point
0.45 ppm
cal. free chlor.
zero point
value take over?
4.01 mA
limit 2: upper
0.60 ppm
limit 1: lower
0.10 ppm
limit 2: upper
0.10 ppm
The setting menus highlighted in grey and the adjustable parameters are only visible in the complete
operating menu.
BA_DM_169_10_08_GB.p65 27.10.2008, 8:50 Uhr8

9
Operating Menu / Overview
limit
total chlorine
LV-relay 2: LV2
- active closed
∆t on 0 s
∆t off 0 s
hysteresis
limits: 0.04 ppm
checkout time
limits: off
LV-relay 1: LV1
- active closed
∆t on 0 s
∆t off 0 s
LV-relay 2: LV2
- active closed
∆t on 0 s
∆t off 0 s
Only with limit value relay
limit
end
control
comb. chlorine
control
end
control
setting ?
control
free chlorine
manual dosing
value: 0 %
dosing direction
free chlor.
additional load
value: 0 %
dosing direction
free chlorine
ctrl parameter
xp = 10 %
Ti= off
Td= off
additional load
value 0 %
dosing direction
comb. chlorine
manual dosing
value: 0 %
dosing direction
comb. chlorine
ctrl parameter
xp = 10 %
Ti= off
Td= off
set point
value: 0.40 ppm
dosing direction
free chlorine
set point 2 upper
value: 0.40 ppm
set point 1 lower
value: 0.40 ppm
LV-relay max.
time: 0000 s
limit 2: upper
0.60 ppm
limit 1: lower
0.10 ppm
control
automatic
dosing direction
free chlorine
control
automatic
dosing direction
comb. chlorine
set point
value: 0.20 ppm
dosing direction
comb. chlorine
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10
Operating Menu / Overview
pumps
setting ?
pump 1
pump end
pump 2 pump
- comb. chlor.
dosing pump max.
pulse/min: 180
relay
setting ?
relay 1
relay 2
relay end
measuring range
setting ?
free chlorine
0...2.00 ppm
total chlorine
0...2.00 ppm
meas. value free
chlorine setting
free chlorine
range adjustment
4 mA = 0.00 ppm
20 mA = 2.00 ppm
mA outputs
setting ?
mA output 1
mA output 2
mA output end
mA output 1
0 mA = 0.00 ppm
20 mA = 2.00 ppm
mA output 2
4 mA = 0 %
20 mA = 100 %
pump 1
- free chlorine
pump
- free chlor.
dosing pump max.
pulse/min: 180
pump 2
- comb. chlorine
relay 1
- free chlorine
relay adjustment
- solenoid valve
solenoid valve 1
- free chlor.
period 10 s
min. time 1 s
relay 2
- comb. chlorine
relay adjustment
- solenoid valve
solenoid valve 2
- comb. chlor.
period 10 s
min. time 1 s
mA output 1
- free chlorine
adjustment
-
measured value
mA output 2
- comb. chlorine
adjustment
- control output
BA_DM_169_10_08_GB.p65 27.10.2008, 8:50 Uhr10

11
Operating Menu / Overview
general setting
information
ident-code: D2CA
M0CC1004M20A
software version
D2C-Cl FW-01.00
alarm relay
active
Permanent display 1
pause free Cl
- active closed
- alarm off
- td: 10 min.
pause total Cl
- active closed
- alarm off
- td: 10 min.
access c.: 5000
operating menu:
- english
- complete
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12
Permanent displays
8Operating Menu / Description
The permanent displays 1 to 4 serve information on fault messages/causes (see also table on page 23) as
well as on operating values/settings.
Calibrate
The chlorine probe is calibrated (slope adjustment) using the DPD method (free chlorine: DPD1, total
chlorine: DPD1+3 or DPD4). The frozen measured value is suggested at the start of the calibration; this can
be adjusted to the measured DPD value with the up / down keys. A calibration is only possible if the DPD
value is ≥2% of the range. The control function stops during the calibration and the dosing goes over to
base load. After a successful calibration, the error diagnostics related to the measured value are restarted.
In the complete operating menu, the zero can be adjusted as well as the slope. The zero adjustment must
be made under realistic operating conditions with chlorine-free water! In this case control is stopped and
the dosing is reduced to the set base load.
The 0/4 ... 20 mA output (measured value) is frozen at the start of the calibration.
ATTENTION
•The range of the chlorine measuring cell must match the set range of the DULCOMETER®D2C
(factory setting 0 - 2.00 ppm). Any range adjustment (see “Measuring ranges” and “Free
chlorine measured value” sections, Page 19) must be made before the calibration. When
the range is changed, all settings are reset to the factory settings.
•The D2C Cl2/Cl2must only be operated in conjunction with a pH control system which
maintains the pH at a constant value with a maximum deviation of Xm = 0.05 pH! Only then
can the D2C Cl2/Cl2control the chlorine concentration with sufficient accuracy, as the
chlorine measured value is pH-dependent.
0.50
0.20
free CL 0.50 ppm
comb. CL 0.20 ppm
total CL 0.70 ppm
stop key
ppm o
CLE
ppm
∆Cl
free CL 0.50 ppm
s. point 0.40 ppm
ctrlout 50 %
comb. CL 0.20 ppm
s.point 0.20 ppm
ctrlout 0 %
total CL 0.70 ppm
BA_DM_169_10_08_GB.p65 27.10.2008, 8:50 Uhr12

13
Operating Menu / Description
calibration ?
calibration
end
cal. total chlor.
zero p.: 4.00 mA
slope:
6.00 mA/ppm cal. total chlor.
zero point
1.28 ppm
cal. total chlor.
DPD4-value:
0.45 ppm
cal. free chlor.
zero p.: 4.00 mA
slope:
6.00 mA/ppm cal. free chlor.
zero p.: 4.00 mA
slope:
6.01 mA/ppm
cal. total chlor.
zero p.: 4.00 mA
slope:
6.01 mA/ppm
cal. total chlor.
zero point
value take over?
4.01 mA
cal. total chlor.
DPD4-value
0.45 ppm
cal. free chlor.
DPD1-value
0.45 ppm
cal. free chlor.
DPD1-value
0.45 ppm
cal. free chlor.
zero point
0.45 ppm
cal. free chlor.
zero point
value take over?
4.01 mA
Possible values
Initial value Increment Lower value Upper value
DPD value Measured value 0.01 ppm -0.20 ppm 2.20 ppm
0.01 ppm -0.50 ppm 5.50 ppm
0.01 ppm -1.00 ppm 11.00 ppm
Zero point Measured value (mA) – – –
Error message Condition Remarks
Cl calibration not possible! Cl slope too low Repeat calibration
Slope too low (<25 % of the standard slope)
Cl calibration not possible! Cl slope too high Repeat calibration
Slope too high (>300 % of the standard slope)
DPD value too small! DPD <2 % of measuring range Repeat calibration after
DPD > x.xx ppm addition of chlorine
Zero point high Sensor signal > 5 mA Repeat calibration in
chlorine-free water
Zero point low Sensor signal < 3 mA Check sensor connection
Possibly change sensor
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14
Operating Menu / Description
Limits
When setting the check out time, metering of the corresponding pump is stopped and an alarm is triggered
through the alarm relay in the event of limit violations exceeding the set check out time.
For devices with limit relays, a limit value or a zone may be set for each measuring value, where the relay will
switch.
limits
setting ?
limit
free chlorine
hysteresis
limits: 0.04 ppm
checkout time
limits: off
Only with limit value relay
LV-relay 1: LV1
- active closed
∆t on 0 s
∆t off 0 s
LV-relay 2: LV2
- active closed
∆t on 0 s
∆t off 0 s
limit
comb. chlorine
hysteresis
limits: 0.04 ppm
checkout time
limits: off
limit 2: upper
0.60 ppm
limit 1: lower
0.10 ppm
limit 2: upper
0.10 ppm
limit
total chlorine
LV-relay 2: LV2
- active closed
∆t on 0 s
∆t off 0 s
hysteresis
limits: 0.04 ppm
checkout time
limits: off
LV-relay 1: LV1
- active closed
∆t on 0 s
∆t off 0 s
LV-relay 2: LV2
- active closed
∆t on 0 s
∆t off 0 s
Only with limit value relay
limit
end
LV-relay max.
time: 0000 s
limit 2: upper
0.60 ppm
limit 1: lower
0.10 ppm
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15
Possible values
Initial value Step interval Lower value Upper value Remarks
Type of limit infringement Limit infringement when value
exceeds or falls below limit
Free chlorine upper upper
lower
Combined chlorine lower upper
lower
Total chlorine upper upper
lower
Limit value 1 0.10 ppm 0.01 ppm -0.20 ppm 2.20 ppm
0.25 ppm 0.01 ppm -0.50 ppm 5.50 ppm
0.50 ppm 0.01 ppm -1.00 ppm 11.00 ppm
Limit value 2 0.60 ppm 0.01 ppm -0.20 ppm 2.20 ppm
1.50 ppm 0.01 ppm -0.50 ppm 5.50 ppm
3.00 ppm 0.01 ppm -1.00 ppm 11.00 ppm
Hysteresis limit 0.04 ppm 0.01 ppm 0 ppm 2.20 ppm Works towards clearing the
0.10 ppm 0.01 ppm 0 ppm 5.50 ppm infringement of the limit.
0.20 ppm 0.01 ppm 0 ppm 11.00 ppm
Checkout time limit Off 1 s 1 s 9999 s Leads to message and alarm
and shutdown of the
corresponding dosing.
Off: function switched off,
no message, no alarm.
Limit relay 1 LV-relay 1 LV-relay 1
LV-relay 2
Zone* *With the “Zone” setting
Off the gap between the limits
Limit relay 2 LV-relay 1 LV-relay 1 must be ≥3 times the set
LV-relay 2 hysteresis.
Zone*
Off
Limit relays 1, 2 active active
closed closed
active
open
Turn-on delay ∆t On 0 s 1 s 0 s 9999 s
Turn-off delay ∆t Off 0 s 1 s 0 s 9999 s
Limit relay Off 1 s 1 s / Off 9999 s Function can be switched off
max. (turn-on) time
Operating Menu / Description
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16
Possible values
Initial value Step interval Lower value Upper value Remarks
Control automatic automatic
auto with dead zone
manual
off
Dosing direction free chlorine free chlorine
free chlorine
free chlorine /
Setpoint 1/2 0.40 ppm 0.01 ppm 0 ppm 2.00 ppm setpoint1 ≤setpoint2
1.00 ppm 0.01 ppm 0 ppm 5.00 ppm
2.00 ppm 0.01 ppm 0 ppm 10.00 ppm
Control
control
comb. chlorine
control
end
control
setting ?
control
free chlorine
manual dosing
value: 0 %
dosing direction
free chlor.
additional load
value: 0 %
dosing direction
free chlorine
ctrl parameter
xp = 10 %
Ti= off
Td= off
additional load
value 0 %
dosing direction
comb. chlorine
manual dosing
value: 0 %
dosing direction
comb. chlorine
ctrl parameter
xp = 10 %
Ti= off
Td= off
set point
value: 0.40 ppm
dosing direction
free chlorine
set point 2 upper
value: 0.40 ppm
set point 1 lower
value: 0.40 ppm
control
automatic
dosing direction
free chlorine
control
automatic
dosing direction
comb. chlorine
set point
value: 0.20 ppm
dosing direction
comb. chlorine
Operating Menu / Description
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17
Pumps
The maximum stroke value of the metering pumps should correspond to the stroke frequency of the
metering pump used.
Control parameter xp 10 % 1 % 1 % 500 % xp relative to measuring
range
Control parameter Ti Off 1 s 1 s 9999 s
Control parameter Td Off 1 s 1 s 2500 s
Additive base load 0 % 1 % 0 % +100 %
Manual dosing 0 % 1 % -100 % +100 %
(free chlorine)
Manual dosing
(combined chlorine) 0 % 1 % 0 % +100 %
Possible values
Initial value Step interval Lower value Upper value Remarks
pumps
setting ?
pump 1
pump end
pump 2 pump
- comb. chlor.
dosing pump max.
pulse/min: 180
pump 1
- free chlorine
pump
- free chlor.
dosing pump max.
pulse/min: 180
pump 2
- comb. chlorine
Operating Menu / Description
Possible values
Initial value Step interval Lower value Upper value Remarks
Assignment of
measured variables
Pump 1 free chlorine free chlorine
combined chlorine
Off
Pump 2 combined chlorine free chlorine
combined chlorine
Off
Dosing direction free chlorine free chlorine Selection only available
Pump free chlorine with free chlorine
Max. no. of strokes/min 180 1 1 500 Off = 0 strokes/min
of pumps 1 and 2
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18
Possible values
Initial value Increment Lower value Upper value Remarks
Measured variable
assignment
Relay 1 free chlorine free chlorine
comb. chlorine
total chlorine
Off
Relay 2 comb. chlorine free chlorine
comb. chlorine
total chlorine
Off
Function in accordance with limit value
1)
not with total chlorine
assignment Identity Code correcting element * measured variable
Relay solenoid valve
1)
* e.g. motor-driven pump
Relay is de-energised
on fault and during
the calibration
Dosing direction free chlorine free chlorine Selection only available
Solenoid valve 1 free chlorine with free chlorine
Cycle time 10 s 1 s 10 s 9999 s
Minimum time 1 s 1 s 1 s cycle/2
Operating Menu / Description
Relays
The two relays can be freely assigned with regard to function (limit, correcting element, solenoid valve).
If the function is set to correcting element or solenoid valve, the relays are de-energised on fault to prevent
faulty dosing.
Relay output 2 for combined chlorine is used to control devices for minimising combined chlorine.
relay
setting ?
relay 1
relay 2
relay end
relay 1
- free chlorine
relay adjustment
- solenoid valve
solenoid valve 1
- free chlor.
period 10 s
min. time 1 s
relay 2
- comb. chlorine
relay adjustment
- solenoid valve
solenoid valve 2
- comb. chlor.
period 10 s
min. time 1 s
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19
Free chlorine measured value
The measurement signal for free chlorine is connected to the standard signal input of X2. As the
measurement signal can come from an external device or a D1C with a different range, you can adjust the
range of this standard signal input separately in this setting menu.
ATTENTION
•If the range is changed, all setting values must be checked!
•If the measurement signal does not come directly from a sensor, but comes from a device
such as a D1C, for example, only the ranges of the D2C and the device have to be matched
to one another – do not calibrate the D2C for free chlorine!
•If the range changes, the controller range also changes with it!
Operating Menu / Description
Measuring ranges
ATTENTION
•The ranges (factory setting 0 – 2.00 ppm) must match the ranges of the chlorine measuring
cells used.
•If the range is changed, all settings (limits, setpoints ....) are reset to the factory settings!
measuring range
setting ?
free chlorine
0...2.00 ppm
total chlorine
0...2.00 ppm
Possible values
Initial value Increment Lower value Upper value Remarks
Measuring range 0...2 ppm 0...2 ppm
0...5 ppm
0...10 ppm
meas. value free
chlorine setting
free chlorine
range adjustment
4 mA = 0.00 ppm
20 mA = 2.00 ppm
Possible values
Initial value Step interval Lower value Upper value Remarks
Lower limit of 4 mA 4 mA Upper limit is 20 mA
standard signal range 0 mA
Range assigned 0...2.00 ppm 0.01 ppm -0.20 ppm 2.20 ppm
to the standard 0...5.00 ppm 0.01 ppm -0.50 ppm 5.50 ppm
signal 0...10.00 ppm 0.01 ppm -1.00 ppm 11.00 ppm
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20
Possible values
Initial value Increment Lower value Upper value Remarks
Measured variables
assignment
mA output 1 free chlorine free chlorine
comb. chlorine
total Cl
Off
mA output 2 comb. chlorine free chlorine
comb. chlorine
total Cl
Off
Functions measured value
1)
not with total chlorine
assignment control variable
1)
measured variable
output1 measured value
output2 measured value
Lower limit 4 mA 4 mA Upper limit is 20 mA
Standard signal range 0 mA
Measured value
range 0…2 ppm 0.01 ppm -1.00 ppm 11.00 ppm Minimum range 0.1 ppm
Control variable range 0 %…+100 % 1 % 0 % +100 % Minimum range 1 %
Operating Menu / Description
Outputs 0/4 - 20mA
The mA outputs may be used either for documentation of the measuring value or as regulated value. When
the regulated value is set, the metering direction selected in "control" will be automatically used!!
mA outputs
setting ?
mA output 1
mA output 2
mA output end
mA output 1
0 mA = 0.00 ppm
20 mA = 2.00 ppm
mA output 2
4 mA = 0 %
20 mA = 100 %
mA output 1
- free chlorine
adjustment
- measured value
mA output 2
- comb. chlorine
adjustment
- control output
BA_DM_169_10_08_GB.p65 27.10.2008, 8:50 Uhr20