ProMinent Dulcometer DMT User manual

ProMinent®
Cl
ppm
Cl
12.5 mA 21.0 °C
0.20
Part no. 987395 ProMinent Dosiertechnik GmbH ·69123 Heidelberg ·Germany BA DM 107 12/03 GB
Please read the operating instructions through completely before
commissioning this equipment! ·Do not discard!
Any part which has been subject to misuse is excluded from the warranty!
Operating Instructions
DULCOMETER®DMT
On-site measurement transducer
Measured variable chlorine
only for DMT measuring cells
Please enter the identity code for your device here!
DMTa ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___

Page 2 ProMinent®
Publishing details
Publishing details:
Operating Instructions
DULCOMETER®DMT on-site measurement transducer
Measured variable chlorine
© ProMinent Dosiertechnik GmbH, 2000
Address:
ProMinent Dosiertechnik GmbH
Im Schuhmachergewann 5-11
69123 Heidelberg · Germany
Postfach 101760
69007 Heidelberg · Germany
Tel.: [phone]
Fax: [phone]
[email protected]
www.prominent.de
Subject to technical alterations.

ProMinent®Page 3
Table of contents
Device identification/identity code chlorine ..................................................... 5
General instructions for use ................................................................................. 6
1About this device ......................................................................................................... 7
2Safety ................................................................................................................................... 7
2.1 Correct use ........................................................................................................... 7
2.2 Safety guidelines ............................................................................................... 7
3Storage and transport .............................................................................................. 7
4Assembly and installation ...................................................................................... 8
4.1 Assembly (mechanical) .................................................................................. 8
4.1.1 Wall mounting ..................................................................................................... 8
4.1.2 Pipe mounting ..................................................................................................... 9
4.1.3 Panel mounting .................................................................................................. 10
4.2 Installation (electrical) ..................................................................................... 11
4.2.1 Wall mounting ..................................................................................................... 12
4.2.2 Pipe mounting ..................................................................................................... 13
4.2.3 Panel mounting .................................................................................................. 13
4.2.4 Connecting terminals ...................................................................................... 14
5Device overview and control elements ......................................................... 15
6Function description .................................................................................................. 16
6.1 General ................................................................................................................... 16
6.2 Key functions ...................................................................................................... 17
6.3 Operating menu, schematic ........................................................................ 17
6.4 Negotiating operating menu ....................................................................... 18
6.4.1 Calibration menu ............................................................................................... 19
6.4.2 Info-Display .......................................................................................................... 19
6.4.3 Menu options ...................................................................................................... 19
6.4.4 Negotiating the menu options ................................................................... 19
Table of contents

Page 4 ProMinent®
7DMT settings ................................................................................................................... 20
7.1 Measured variable chlorine ......................................................................... 21
7.1.1 Menu overview: Measured variable chlorine...................................... 21
7.1.2 Parameter measurement .............................................................................. 22
7.1.3 Parameter temperature .................................................................................. 22
7.1.4 Parameter output .............................................................................................. 24
7.1.5 General settings ................................................................................................. 26
8Operating the DMT ..................................................................................................... 28
8.1 Permanent display............................................................................................ 28
8.1.1 Brightness of LC display ............................................................................. 28
8.2 Calibration............................................................................................................. 28
8.2.1 The calibration process ................................................................................. 28
9Troubleshooting ............................................................................................................ 31
9.1 Error messages during operation ............................................................. 31
9.2 Error messages during calibration........................................................... 32
10 Maintenance and repair ........................................................................................... 33
11 Disposal .............................................................................................................................. 33
12 Technical data ................................................................................................................ 34
13 Spare parts and accessories ............................................................................... 35
Appendix
Declaration of conformity ........................................................................................... 36
Terminal connection plan chlorine ........................................................................ 37
Wiring example - two wire system ........................................................................ 38
PROFIBUS®circuit board terminal connection .............................................. 39
Index ...................................................................................................................................... 40
Drilling template for DMT ........................................................................................... 43
Table of contents

ProMinent®Page 5
Device identification/identity code: measured variable chlorine
Please enter the identity code for your device here!
DMTa
DMTa DULCOMETER®DMT series measurement transducer
Mounting type
Wwall/pipe mounted
Scontrol panel mounted (not PROFIBUS®-DMT)
Version
0with ProMinent logo
Electrical connection
94-20 mA two wire
5PROFIBUS®-DP, 24 V DC (16...30 V DC)
Communication interface
0none
4PROFIBUS®-DP
Measured variable
Cchlorine
Correction variable
0none
1temperature (Pt 1000/Pt 100)
Enclosure rating
0standard
Adjustable via general settings:
Language
DGerman
EEnglish
FFrench
SSpanish
IItalian
Chlorine measuring cell type
0CLE 5 ppm
4CTE 10 ppm
5CLE 50 ppm
Temperature measurement
0automatic
(Pt 1000 or Pt 100)
1manual
2automatic or manual
Output
0measured variable
(fault: 23 mA, calibration: 23 mA)
1manually adjustable
current value
2measured variable or manual
(fault: 23 mA, calibration: 23 mA)
3measured variable or manual
(fault: 23 mA, calibration: HOLD)
44mA constant current
Other settings
0standard

ProMinent® Page 6
General instructions for use
Please read through these instructions for use carefully! They will enable you
to make the best possible use of this operating instructions manual.
The following sections are highlighted in the text:
•Enumerated points
왘Instructions
Working instructions:
NOTE
Guidelines are intended to make your work easier.
and safety instructions:
CAUTION
Describes a potentially dangerous situation.
Non-observance can lead to personal injury or damage
to property!
IMPORTANT
Describes a potentially dangerous situation.
Non-observance can lead to damage to property.
General instructions for use

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ProMinent®
1About this device
The measurement DULCOMETER®DMT for conductive conductivity is a two-
wire measurement transducer for use in all areas of process and process
technology in non-explosive areas.
It shows the electrolytic conductivity and/or specific resistance and produces
a proportional output signal.
An optimum PROFIBUS®-DP interface enables e.g. read out of the measure-
ment, correction and calibration values of the measurement transducer by a
PC or PLC and provides a superseding system.
PROFIBUS®-DP is a manufacturer-independent interface.
2Safety
2.1 Correct use
The DMT on-site measurement transducer is designed exclusively for the
•measurement of chlorine concentration
•measurement of temperature
•display of measured variables
•production of an output signal
•for the connection of DMT probes
It is prohibited to use the device for any other applications or to modify it in
any way!
Do not use the device out of doors without additional protection (protective
housing, weatherproof cover).
The DMT measurement transducer is not suitable for use in explosive areas.
2.2 Safety guidelines
CAUTION
•The device must not be used in a possible explosion area!
•The DMT must be operated by trained and authorised
personnel!
IMPORTANT
•The system must be suitably equipped and configured to
prevent overdosing of hazardous materials due to probe
failure.
•The DMT has no on/off switch. It starts to function as
soon as it is connected to a power supply.
3Storage and transport
Store and transport the DMT in the original packaging!
IMPORTANT
•Protect the DMT from damp and the effects of chemicals
even when packed!
Safety / Storage and transport

Page 8 ProMinent®
Ambient conditions for storage and transport:
Temperature: -20 °C to 70 °C
Humidity: max. 95 % relative humidity,
non condensing
4Assembly and installation
IMPORTANT
•The DMT is fully resistant to normal environments control
rooms.
•The DMT must be protected against rain and direct
sunlight!
Use a protective housing or weatherproof cover if in use
out of doors!
4.1 Assembly (mechanical)
The DMT can be wall, pipe or panel mounted.
4.1.1 Wall mounting
Mounting materials (included in delivery):
1 x wall/pipe bracket
2 x 5x45 mm round headed screws
2 x 5.3 washers
2 x 8 mm diameter plugs, plastic
1 x rubber insert
1 x locking screw (PT)
Wall mounting, please follow the steps below:
왘Remove wall/pipe bracket from DMT:
Pull the two snap fasteners outwards and push upwards (fig. 1, ➀).
Swing the wall/pipe bracket away from the DMT and pull downwards
(fig. 1, ➁).
왘Mark two drill holes diagonally opposite one another using the mounting
bracket as a template.
왘Drill the holes: Ø 8 mm, depth = 50 mm.
왘Screw the wall/pipe bracket in place inserting the washers (fig. 2).
왘If the DMT is also to be secured with a screw, pierce the screw hole in the
back of the housing (housing must be open) and attach a rubber insert
(fig. 2, ➀) to the bracket.
왘Hang the DMT onto the top of the bracket (fig. 3, ➀) and push down
gently against the bracket (fig. 3, ➁); then push upwards until you hear a
click (fig. 3, ➂).
왘Tighten the locking screw to secure more firmly (housing is open).
Storage and transport / Assembly and installation

Page 9
ProMinent®
2
3515_4
1
3
2
1
3464_4
Assembly and installation
Fig. 1 Fig. 2
Fig. 3
1
3461_4
4.1.2 Pipe mounting
Mounting material (included in delivery):
1 x wall/pipe bracket
2 x cable ties
1 x sealing cap
1 x locking screw (PT)
Can be mounted onto pipes of diameters from 25 mm to 60 mm.

ProMinent® Page 10
Pipe mounting, please follow the steps below:
왘Remove wall/pipe bracket from DMT:
Pull the two snap fasteners outwards and push upwards (fig. 1, ➀).
Swing the wall/pipe bracket away from the DMT and pull downwards
(fig. 1, ➁).
왘Fasten the bracket to the pipe using the cable ties (or pipe clamps)
(fig. 3).
왘If the DMT is also to be secured with a screw, pierce the screw hole in the
back of the housing (housing must be open) and attach a rubber insert
(fig. 2, ➀) to the bracket.
왘Hang the DMT onto the top of the bracket (fig. 3, ➀) and push down
gently against the bracket (fig. 3, ➁); then push upwards until you hear a
click (fig. 3, ➂).
왘Tighten the locking screw to secure more firmly (housing is open).
4.1.3 Panel mounting
IMPORTANT
•The control panel must be thick enough not to buckle
once installed. (To achieve enclosure rating IP 54, steel
must be at least 2 mm thick; plastic should be
correspondingly thicker.)
NOTE
The DMT will protrude from the control panel approx. 30 mm
once mounted.
Fig. 4
3463_4
Assembly and installation

Page 11
ProMinent®
Panel mounting, please follow the steps below:
왘Decide on the exact position of the DMT on the panel using the drill
template.
왘Centre punch the holes for the screws and cut-out through the drilling
template.
왘Drill the four screw holes with a Ø 3.5 mm diameter drill bit.
왘Punch out the cut-out or drill the four inner holes using an Ø 8 mm
diameter drill bit and pierce out the cut-out with a keyhole saw.
CAUTION
Sharp edges can cause injury!
왘File off cut edges.
왘Insert the profile seal into the groove provided on the DMT.
왘Place the DMT onto the cut-out and screw in place.
IMPORTANT
Check that the seal is located correctly.
IP 54 is only achieved when assembly has been carried out
correctly.
4.2 Installation (electrical)
IMPORTANT
•Installation must be carried out by specially trained
personnel.
•Installation can only be carried out after assembly has
been completed.
•The device must be connected to a protective low voltage
in accordance with EN 60335-1.
•Observe the relevant technical data in chapter 12
throughout installation procedures.
•The ring circuit must be disconnected from the power
supply during installation.
•The DMT signal cable must not be laid next to leads
subject to high levels of interference. Can lead to
malfunction of DMT.
•The hinge between the front and back sections of the
housing is not particularly strong. When working on the
front section it should be held securely in place.
Assembly and installation

Page 12 ProMinent®
4.2.1 Wall mounting
왘Unfasten the four housing screws.
왘Lift the front section slightly forwards and then swing open to the left.
NOTE
•For smaller screw fittings (M 16 x 1.5), the cable for power
supply should be installed on the left. Then, the cables
for further sensors (e.g. Pt 1000) follow.
•Push the 5-core signal cable through the small threaded
connector (M 16 x 1.5) to the far left.
왘Pierce threaded cable apertures at the bottom of the rear side as required
(fig. 5).
Fig. 5
3468_4
왘Tighten the threaded connectors (fig. 6, ➀) as required.
왘Use reducers as required (fig. 6, ➁) to adapt the sizes of the threaded
connectors to the actual cable diameters.
왘Feed the cables into the threaded connectors.
왘Now proceed according to 4.2.5 Connecting terminals.
Then follow the steps below:
왘Tighten the locking screws (fig. 6, ➂) for the threaded connectors.
왘Swing the front section onto the back section.
IMPORTANT
Check that the seal is located correctly. IP 65 is achieved
only when assembly has been carried out correctly.
(If necessary pull the front section forward in order to reduce
the stress on the seal.)
왘Tighten the housing screws finger tight.
Assembly and installation

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ProMinent®
Assembly and installation
Fig. 6
Cl/ClO /O
Cl/ClO /O
3
2
-
+
4to20mA
4to20mA
shield
(gr)Pt1000- /sig.gnd.
(gr)Pt1000- /sig.gnd.
(wth)Pt1000+
(wth)Pt1000+
(bl)+U
(bl)+U
---
---
(blk)-U
(blk)-U
(br)meas.sig.
(br)meas.sig.
Pt100x-
Pt100x-
Pt100x+
Pt100x+
---
---
liquidpot.
liquidpot.
ref.el.
ref.el.
glassel.
glassel.
pH/ORP
pH/ORP
8
6
5
4
3
2
7
1
3465_3
1
2
3
4
4.2.2 Pipe mounting
See 4.2.1 Wall mounting
Fig. 6.1
3
2
1
3464_4
4.2.3 Panel mounting
NOTE
The cable must be laid in cable ducting on site to minimise
stresses.
Connect the cable from the back through the cut-out in the control panel:
왘Follow the steps given in 4.2.4 Connecting terminals.

Page 14 ProMinent®
4.2.4 Connecting terminals
왘Remove insulation from cable ends as shown in fig. 7 (right) and attach
end crimps to each core.
왘Connect the cables in accordance with the terminal connection plan
(see appendix).
IMPORTANT
•APt 100/Pt 1000 must be connected!
•Do not operate PROFIBUS®variants at voltages over 30 V.
•Connect PROFIBUS®variant power supplies via terminals
3 and 4 on the PROFIBUS®circuit board in the back
section, not terminals 7 and 8 in the front section.
NOTE
• The terminal connection plan is given in the appendix.
There is also a panel giving connection information affixed
to the housing near the terminals (fig. 6, √and fig. 8).
•Remove the tag from the signal cable and dispose of
appropriately.
•Push the cable through the housing until the front section
can be moved up and down easily.
•If the LC display is too weak, reduce the brightness using
the up arrow key . If the display is too dark, increase
the brightness using the down arrow key .
Fig. 7 Fig. 8
Cl/ClO /O
3
2
-
+
4to20mA
shield
(gr) Pt1000 - /sig.gnd.
(wth) Pt1000 +
(bl) +U
---
(blk)-U
(br) meas.sig.
Pt100 -
Pt100 +
---
liquid pot.
ref.el.
glass el.
pH/ORP
8
6
5
4
3
2
7
1
Assembly and installation
30
7

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ProMinent®
5Device overview and control elements
Fig. 9
3456_4
Device overview and control elements
Change key
CAL key
Measured
variable label
LC display
Down key
Back key
Enter key
Up key

Page 16 ProMinent®
6Function description
6.1 General
The DULCOMETER®MEASUREMENT TRANSDUCER (DMT) is a micro-
processor controlled on site measurement transducer. It displays the
selected measured variable and produces a proportional output signal. It can
also use temperature as a correction variable. The user can specify these
functions using the operating menu.
The inputs are collectively electrically insulated against the output.
In the event of a fault the DMT indicates an error message on the LC display
and produces an increased current (23 mA) through the ring circuit.
The DMT is also available for the following measured variables:
•Conductivity
•pH
•Redox
•Temperature
Block circuit diagram
Signal
output
4 ... 20 mA
at
16 ... 40 V DC
resp. 30 V DC
(PROFIBUS®
variant)
µP
Keypad LC display
EEPROM
(parameter memory)
DA
AD
Measured
variable
Temperature
FlashROM
(program memory)
Power supply,
current control
Function description

Page 17
ProMinent®
6.2 Key functions
The key are used to alter the DMT settings and have the following functions:
in the permanent display/ in the menu options
in the info display
Change key Toggles between permanent Toggles between individual
display and info display values that can be changed in
modes the selected menu option
Back key Exits info display mode and Returns to info display without
returns to permanent display saving changes
mode
Enter key Change to menu options Saves changes to values in
(from an info display) current menu option and
accesses the next info display
or another menu option
CAL key Opens the calibration menu Activates calibration in
(from permanent display) calibration menu (pH only)
Down key Alters brightness of the Change a value
LC display
Up key (in permanent display mode)
6.3 Operating menu, schematic
The operating menu comprises:
•the permanent display
•the calibration menu
•the info displays (info level)
for the display of pre-set parameters resp. general settings
•menu options (settings level)
for altering parameters resp. general settings
Function description

Page 18 ProMinent®
=Request access code
(only when activated by user)
Calibration menu
Info display 1
Info display X
Menu option 1
Menu option 1
Permanent
display
Menu option 2
Info level Settings level
6.4 Negotiating operating menu
NOTE
•The back key can be used to exit the operating menu
at any time. Depending upon where you are in the
operating menu, you will return either to the permanent
display or to the corresponding info level.
•The display will automatically return to permanent display
if you do not press a key within 5 min. (does not save
changes to values).
•If an access code has been activated by the user, access
code protection is applied to both the calibration menu
and the settings level menu options.
To access these menu options the access code must be
entered when it is requested and confirmed with the enter
key . Access restriction is reinstated each time you
return to the permanent display.
•The access code is factory set to 5000 (inactive).
Function description

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ProMinent®
6.4.1 Calibration menu
Access the calibration menu from the permanent menu using the CAL key
(further details given in 8.2 Calibration).
6.4.2 Info Display
Access the first info display of the info level from the permanent display using
the change key .
Use the change key to access the other info displays in turn. Returns to
the permanent display after the last info display.
6.4.3 Menu options
Use the enter key to access the menu options associated with that info
level.
6.4.4 Negotiating the menu options
input: sensor
unit: ˚C
offset = 0.00 ˚C
meas. val. = 21.00 ˚C
= adjustable numerical
values/texts flashing
Press the change key to activate all adjustable values in a menu option.
Flashing values can be altered. Use the arrow keys / to alter numerical
values or texts.
Keystrokes perform the following actions:
•1x short keystroke reduces/increases a numerical value by one
increment or alters a text
•Holding the key down for longer alters numerical values increasingly
rapidly.
Use the enter key to save changed values in the menu option. You will
then automatically enter the next info display or (if available) the next menu
option.
NOTE
Your entries become active immediately and are stored
permanently when you press the enter key .
If you do not wish to save changes, exit the menu option using the back
key . You will then return to the info display for that menu.
Function description

Page 20 ProMinent®
7DMT settings
NOTE
•Settings need only be changed if your process
requirements differ from factory general settings.
•If your DMT does not display the required settings option,
check the general settings of your device as described in
chapter 7.1.5.
Menu overview table
Parameter measurement Zero point and slope
Parameter Means of detection:
Temperature •probe
measurement •manual (enter value)
Unit of measurement
•˚C
•˚F
Parameter Value:
output current •
proportional measured variable
measured variable at 4 mA
measured variable at 20 mA
•manual (enter value)
General setting Measured variable Settings configuration Access
•Cl code
=Request access code
(if activated by the user)
Permanent display Calibration DPD or zero point
DMT settings