ProMinent DULCOMETER DMT Series Operating Instructions Manual
Operating Instructions
DULCOMETER® DMT
On-site measurement transducer
Measured variables pH/redox/temperature
®
ProMinent
DMTa
The operator shall be liable for any damage caused by installation or operating errors!
Part no. 987426 ProMinent Dosiertechnik GmbH · 69123 Heidelberg · Germany BA DM 163 03/08 GB
___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
Please enter the identity code of the device here.
Please read the operating instructions through completely before
commissioning this equipment! Do not discard!
Publishing details
Publishing details:
Operating Instructions
DULCOMETER
®
DMT on-site measurement transducer
Measured variables pH/redox/temperature
© ProMinent Dosiertechnik GmbH, 2000
Address:
ProMinent Dosiertechnik GmbH
Im Schuhmachergewann 5-11
69123 Heidelberg
Germany
Telephone: +49 6221 842-0
Fax: +49 6221 842-419
info@prominent.com
www.prominent.com
Subject to technical alterations.
Page 2
ProMinent
®
Table of contents
Table of contents
Device identification/identity code: measured variable pH.......................... 5
Device identification/identity code: measured variable redox ..................... 6
Device identification/identity code: measured variable temperature .......... 7
1 General instructions for use ............................................................ 8
2 Safety .................................................................................................. 9
2.1 Correct use ............................................................................ 9
2.2 Safety guidelines ................................................................... 9
3 Storage and transport ...................................................................... 9
4 Assembly and installation ................................................................ 10
4.1 Assembly (mechanical) ......................................................... 10
4.1.1 Wall mounting ........................................................................ 10
4.1.2 Pipe mounting ........................................................................ 11
4.1.3 Panel mounting ...................................................................... 12
4.2 Installation (electrical) ........................................................... 13
4.2.1 Wall mounting ........................................................................ 14
4.2.2 Pipe mounting ........................................................................ 15
4.2.3 Panel mounting ...................................................................... 15
4.2.4 Connecting coaxial cable ...................................................... 16
4.2.5 Connecting terminals ............................................................. 16
5 Device overview and control elements .......................................... 17
6 Function description ......................................................................... 18
6.1 General .................................................................................. 18
6.2 Key functions ......................................................................... 19
6.3 Operating menu, schematic .................................................. 19
6.4 Negotiating operating menu ................................................. 20
6.4.1 Calibration menu (pH only) .................................................... 21
6.4.2 Info display ............................................................................ 21
6.4.3 Menu options ......................................................................... 21
6.4.4 Negotiating the menu options ............................................... 21
7 DMT settings ...................................................................................... 22
7.1 Measured variables pH and redox........................................ 23
ProMinent
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Page 3
Table of contents
8 Operating the DMT ............................................................................ 38
7.1.1 Menu overview: measured variable pH ................................ 23
7.1.2 Menu overview: measured variable redox ............................ 24
7.1.3 Parameter settings (pH only) ................................................ 25
7.1.4 Checking the ORP probe (redox only) .................................. 25
7.1.5 Parameters: Temperature ...................................................... 26
7.1.6 Parameter output .................................................................. 28
7.1.7 General settings .................................................................... 31
7.2 Measured variable temperature ............................................ 33
7.2.1 Menu overview measured variable, temperature ................. 33
7.2.2 Parameters temperature ....................................................... 34
7.2.3 Parameter output .................................................................. 34
7.2.4 General settings .................................................................... 36
8.1 Permanent display ................................................................ 38
8.1.1 Probe condition information (pH only) ................................... 38
8.1.2 Brightness of LC display ........................................................ 39
8.2 Calibrating the pH meter ....................................................... 39
8.2.1 Automatic buffer detection .................................................... 39
8.2.2 The calibration process ......................................................... 40
9Troubleshooting ................................................................................. 44
9.1 Error messages during operation ......................................... 44
9.2 Error messages while calibrating the pH meter ................... 45
10 Maintenance and repair .................................................................... 46
11 Disposal .............................................................................................. 46
12 Technical data .................................................................................... 47
13 Spare parts and accessories ........................................................... 48
Appendix ............................................................................................. 49
Conformity declarationdeclaration ...................................................... 49
Terminal connection plan pH/redox/temperature ................................ 50
Wiring example - two wire system ....................................................... 51
PROFIBUS
Index .................................................................................................... 53
Page 4
®
circuit board terminal connection ................................... 52
ProMinent
®
Device identification/identity code: measured variable pH
DMTa DULCOMETER® DMT series measurement transducer
Mounting type
W wall/pipe mounted
S control panel mounted (not PROFIBUS®-DMT)
Version
0 with ProMinent logo
Electrical connection
9 4-20 mA (two wire) current loop, 24 V DC (16...40 V DC)
5 PROFIBUS®-DP, 24 V DC (16...30 V DC)
Communication interface
0 none
4 PROFIBUS®-DP
Measured variable
PpH
R redox (ORP)
T temperature
Correction variable
1 temperature (PT 1000/PT 100)
Enclosure rating
0 standard
Adjustable general settings:
Language
D German
E English
F French
P Polish
S Spanish
IItalian
Automatic buffer detection
0 ProMinent buffer set
D DIN 19226 buffer set
V automatic buffer adjustment
Temperature measurement
0 automatic
(PT 1000 or PT 100)
1 manual
2 automatic or manual
9 none
0 measured variable
1 manually adjustable
2 measured variable or manual
3 measured variable or manual
44 mA constant current
Output
(fault: 23 mA, calibration: 23 mA)
current value
(fault: 23 mA, calibration: 23 mA)
(fault: 23 mA, calibration: HOLD)
Other settings
0 standard
DMTa 0 P 1 0 0
Please enter the identity code for your device here.
ProMinent
®
Page 5
Device identification/identity code: measured variable redox
DMTa DULCOMETER® DMT series measurement transducer
Mounting type
W wall/pipe mounted
S control panel mounted (not PROFIBUS®-DMT)
Version
0 with ProMinent logo
Electrical connection
9 4-20 mA (two wire) current loop, 24 V DC (16...40 V DC)
5 PROFIBUS®-DP, 24 V DC (16...30 V DC)
Communication interface
0 none
4 PROFIBUS®-DP
Measured variable
R redox
PpH
T temperature
Correction variable
1 temperature (PT 1000/PT 100) - measurement only
Enclosure rating
0 standard
Adjustable general settings:
Language
D German
E English
F French
P Polish
S Spanish
IItalian
Probe type
0 standard
Temperature measurement
0 automatic
(PT 1000 or PT 100)
9 none
0 measured variable
1 manually adjustable
2 measured variable or manual
3 measured variable or manual
44 mA constant current
Output
(fault: 23 mA, calibration: 23 mA)
current value
(fault: 23 mA, calibration: 23 mA)
(fault: 23 mA, calibration: HOLD)
Other settings
0 standard
DMTa 0 R 1 0 0 0
Please enter the identity code for your device here.
Page 6
ProMinent
®
Device identification/identity code: measured variable temperature
DMTa DULCOMETER® DMT series measurement transducer
Mounting type
W wall/pipe mounted
S control panel mounted (not PROFIBUS®-DMT)
Version
0 with ProMinent logo
Electrical connection
9 4-20 mA (two wire) current loop, 24 V DC (16...40 V DC)
5 PROFIBUS®-DP, 24 V DC (16...30 V DC)
Communication interface
0 none
4 PROFIBUS®-DP
Measured variable
PpH
R redox (ORP)
T temperature
Correction variable
0 none
Enclosure rating
0 standard
Adjustable general settings:
Language
D German
E English
F French
P Polish
S Spanish
IItalian
Probe type
0 PT 100 or PT 1000
Temperature detection
0 Probe (PT 1000 or PT 100)
0 Output: measured variable
1 Output adjustable
2 measured variable or adjustable
3 measured variable + manual + HOLD
4 Output current = 4 mA
Output current
(fault: 23 mA, calibration: 23 mA)
(fault: 23 mA, calibration: 23 mA)
(fault: 23 mA, calibration: HOLD)
Other settings
0 standard
DMTa 0 T 0 0 0 0 0
Please enter the identity code for your device here.
ProMinent
®
Page 7
General instructions for use
1 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
왘 Instructions
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.
Page 8
ProMinent
®
Safety / Storage and transport
2 Safety
2.1 Correct use
The DMT on-site measurement transducer is designed exclusively for the
• measurement of pH value resp. redox potential
• measurement of temperature
• display of measured variables
•production of an output signal
It is prohibited to use the device for any other applications or to modify it
in any way!
The device must not be used outdoors without added protection (housing,
weatherproof cover).
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.
3 Storage 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.
Ambient conditions for storage and transport:
Temperature: -20 °C to 70 °C
Humidity: max. 95 % relative humidity,
ProMinent
®
non condensing
Page 9
Assembly and installation
4 Assembly and installation
IMPORTANT
• The DMT is fully resistant to normal environments control
rooms.
• The DMT must not be placed where it can come into
contact with rain or 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 (not for PROFIBUS®-DMT).
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 wall plugs Ø 8 mm, plastic
1 x rubber insert
1 x locking screw (PT)
Wall mounting, please follow the steps below:
왘 Remove 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).
왘 Mark two drill holes diagonally opposite one another using the mounting
bracket as a template.
왘 Drill the holes: Ø 8 mm, depth = 50 mm.
왘 Screw the wall/pipe bracket in place inserting the washers (fig. 2).
왘 If 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.
왘 Hang 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).
왘 Tighten the locking screw to secure more firmly (housing is open).
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ProMinent
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Assembly and installation
Fig. 1 Fig. 2
2
1
3515_4
1
3461_4
Fig. 3
1
2
3
3464_4
4.1.2 Pipe mounting
Mounting materials (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 11
Assembly and installation
Pipe mounting, please follow the steps below:
왘 Remove 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).
왘 Fasten the bracket to the pipe using the cable ties or pipe clamps (fig. 3).
왘 If 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.
왘 Hang 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).
왘 Tighten the locking screw to secure more firmly (housing is open).
4.1.3 Panel mounting
Fig. 4
IMPORTANT
• The control panel must be thick enough to withstand the
weight of the mounted DMT without buckling. (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.
Page 12
3463_4
ProMinent
®
Assembly and installation
Panel mounting, please follow the steps below:
왘 Decide on the exact position of the DMT on the panel using the drill
template.
왘 Centre punch the holes for the screws and cut-out through the drilling
template.
왘 Drill the four screw holes with a Ø 3.5 mm diameter drill bit.
왘 Punch 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.
왘 File off cut edges.
왘 Insert the profile seal into the groove provided on the DMT.
왘 Place 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 current loop 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.
ProMinent
®
Page 13
Assembly and installation
4.2.1 Wall mounting
왘 Unfasten the four housing screws
왘 Lift the front section slightly forwards and then swing open to the left.
왘 Pierce threaded cable apertures at the bottom of the rear side as required
(fig. 5).
Fig. 5
3468_4
NOTE
• The large gland (M 20 x 1.5) is intended for the sensor
cable.
• Feed the power cable leftwards through the smaller
threaded connector (M 16 x 1.5). Follow with the other
sensor cables (e.g. PT 1000).
왘 Tighten the threaded connectors (fig. 6, ➀) as required.
왘 Use reducers as required (fig. 6, ➁) to adapt the sizes of the threaded
connectors to the actual cable diameters.
왘 Feed the cables into the threaded connectors.
왘 Now proceed according to 4.2.4 Connecting coaxial cable and
4.2.5 Connecting terminals.
Then follow the steps below:
왘 Tighten the locking screws (fig. 6, ➂) for the threaded connectors.
왘 Swing the front section onto the back section.
Page 14
ProMinent
®
Cl/ClO /O
-
+
4to20mA
shield
(gr) Pt1000 - /sig.gnd.
(wth) Pt1000 +
(bl) +U
---
(blk)-U
(br) meas.sig.
Pt100x -
Pt100x +
---
liquid pot.
r
ef.el.
glass el.
pH/OR
P
8
6
5
4
3
7
1
Assembly and installation
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.)
왘 Tighten the housing screws finger tight.
Fig. 6
pH/OR
Cl/ClO /O
P
2
3
liquid pot.
1
(blk)-U
---
Pt100x +
Pt100x -
glass el.
r
ef.el.
2
(bl) +U
3
---
4
(br) meas.sig.
5
(wth) Pt1000 +
6
(gr) Pt1000 - /sig.gnd.
4to20mA
shield
+
7
-
8
4
1
2
3
3465_3
4.2.2 Pipe mounting
See 4.2.1 Wall mounting
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:
왘 Follow the steps given in 4.2.4 Connecting coaxial cable and 4.2.5
Connecting terminals.
ProMinent
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Page 15
Assembly and installation
4.2.4 Connecting coaxial cable
The pH resp. redox probe is connected via a coaxial cable:
왘 Strip back to reveal cable shield (reference electrode) in accordance with
fig. 7 (left) and clamp using the shield clip.
The shield clip is connected internally to terminal 3.
Under normal circumstances measuring can be carried out without
connecting a liquid reference potential. In this case provide wire jumpers
between terminals 1 and 2.
When electrical conditions are more complex a potential plug should be
connected to terminal 1. Terminal 2 is left free.
The appendix contains an overview of connection options (terminal
connection plan).
4.2.5 Connecting terminals
왘 Remove insulation from cable ends as shown in fig. 7 (right) and attach
end crimps to each core.
왘 Connect the cables in accordance with the terminal connection plan.
IMPORTANT
• 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).
• 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
7
12
33
7
3459_4
pH/ORP
liquid pot.
30
glass el.
Pt100 +
Pt100 -
---
ref.el.
Cl/ClO /O
3
2
(blk)-U
1
(bl) +U
2
---
3
4
(br) meas.sig.
(wth) Pt1000 +
5
(gr) Pt1000 - /sig.gnd.
6
shield
4to20mA
+
7
8
-
Page 16
ProMinent
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Device overview and control elements
5 Device overview and control elements
Fig. 9
Measured
variable label
LC-Display
Change key
Back key
Down key
CAL key
Enter Key
Up key
3456_4
ProMinent
®
Page 17
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