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GRUNDFOS
PRODUCT GUIDE
DME and DMS
Digital Dosing
Contents
Contents
General data
Performance range, DME 3
Performance range, DMS 3
Digital Dosing 4
Type key 5
Codes 5
Functions
Overview of functions 6
Capacity range 7
Functions
Capacity control, DME 8
Capacity control, DMS 9
Control panel 10
Menu 12
Operating modes 13
Dosing monitoring 17
Control panel lock 18
Wiring diagram, DME 2 to 48 and DMS-A (AR) 19
Wiring diagram, DME (60 to 940) 20
Construction
Pump selection
DME 2 to 12 - standard range 33
DME 19 to 48 - standard range 34
DME 60 to 150 - standard range 35
DME 375 to 940 - standard range 36
DMS 2 to 4 - standard range 37
DMS 8 to 12 - standard range 38
Non-standard options 39
Pumped liquids
List of pumped liquids 40
Accessories
41
Sectional drawing, DME (2 to 48) 22
Material specification 22
Sectional drawing, DME (60 to 940) 23
Material specification 23
Sectional drawing, DMS 24
Material specification 24
Performance curves
DME, DMS, 60 Hz 25
Dimensions
Front-fitted control panel DME 2 to 48, DMS 28
Side-fitted control panel DME 2 to 48, DMS 28
DME (60 to 940) 29
Technical data
DME (2 to 48) 30
DME (60 to 940) 31
DMS 32
2
General data
Performance range, DME
p
p
[bar]
[psi]
18
240
16
DME 2-18
14
200
12
160
10
120
8
6
80
4
40
2
0
0
1 2.5 7.5 12 18.5 48 60 150 376 940
DME 8-10
11 2 3 4 5 6 7 8 1010 20 30 40 50 60 80100100 200
DME 60-10 DME 375-10
DME
DME
12-6 19-6
DME 48-3
DME
DME 150-4 DME 940-4
Q [l/h]
Q [US GPH]
DME
TM02 9943 4604
Performance range, DMS
p
p
[bar]
[psi]
160
11
10
140
9
120
8
100
7
6
80
5
60
40
20
0
DMS 2-11
4
DMS 4-7
3
2
1
0
1 2 3 4 5 6 7 8 9 10 11 12 13
0.5 1.0 1.5 2.0 2.5 3.0
DMS 8-5
DMS 12-3
DMS
Q [l/h]
Q [US GPH]
TM02 9944 4604
3
General data
DMS
DME and DMS
Digital Dosing
Digital Dosing represents state-of-the-art technology.
This patented Grundfos solution sets new standards,
including new principles and methods.
Precise and easy setting
The operator can easily install and set the pump to
discharge exactly the quantity of dosing liquid required
in the application. Capacity is read on the digital display
in GPH, l/h, or ml/h, while icons are used to identify the
operation mode.
Unique technology
A unique drive and microprocessor control ensure that
dosing liquids are discharged precisely and with low
pulsation even when the pump is operati ng with high
viscosity or degassing liquids. Instead of the conventional stroke length adjustment, the capacity of the
DME is regulated by automatic ajustment of the motor
speed during the discharge stroke and by fixed suction
stroke speed, ensuring optimal and uniform mixing. The
capacity of the DMS is regulated by automatic regulation of the stroke frequency.
Fewer variants to cover all needs
The powerful variable speed motor, a turn-down ratio of
1:1000/1:800 and a complete control interface including
• full pulse control,
• pulse batch control,
• internal timer batch control,
• analog 0/4-20 mA control,
• level control and
TM03 0815 0505
• fieldbus communication module
ensure that nine DME pumps cover the range from
0.00066 to 248.3 gallons per hour, up to 261 psi. The
switch mode power supply ensures that the same pump
is working precisely, irrespective of the power supply
(100-240 V; 50-60 Hz).
The DMS version with synchronous motor and a turndown ratio of 1:100 (consisting of four pump sizes and
two control versions) cover the range from 0.0066 to
3.17 GPH. The DMS-A pumps have external pulse,
analog 4-20 mA and level control interface; the DMS-B
version is without external control interface. The DMSD is without control and user interface.
The DME and DMS dosing pumps feature diaphragm
dosing head with integrated vent valve, suction and
discharge ball valves.
The pumps are also fitted with a power cable and plug.
4
General data
Type key Codes
Example DME 2 - 18 - A - PP / E / C - F - 2 1 RR B
Type
range
Maximum capacity
[l/h]
Maximum pressure
[bar]
Control variant
Dosing head material
Gasket material
Valve ball material
Control panel position
Supply voltage
Valves
Connection suction/
discharge
Power plug type
Example A - PP / E / C - 2 - 1 R R B
Control variant
A
AG A + Genibus
AR A + alarm relay
AP A + Profibus
BBasic
DOnly on/off
Dosing head material
PP Polypropylene
PV PVDF
SS Stainless steel
Gasket material
EEPDM
VFKM
Valve ball material
C Ceramic
SS 316 SS
GGlass
Y Hastelloy C
Control panel position
F Front-fitted
S Side-fitted
X No control panel
Supply voltage
1 1 x 230 V, 50 Hz
2 1 x 120 V, 60 Hz
3 1 x 100-240 V, 50-60 Hz
6 1 x 110 V, 50 Hz
8 1 x 100 V, 50/60 Hz
9 1 x 200 V, 50/60 Hz
Valves
1 Standard valve
2 Spring-loaded valve
Connection suction/discharge
Tubing 6/9 mm
1
Tubing 4/6 mm
supplied with the pump
Tubing 6/9 mm
2
Tubing 6/12 + 9/12 mm
supplied with the pump
3 Tubing 4/6 mm
4 Tubing 6/9 mm
5 Tubing 6/12 mm
6 Tubing 9/12 mm
T Tubing 0.17"/0.25"
R Tubing 0.25"/0.375"
S Tubing 0.375"/0.5"
A Threaded Rp 1/4
B Threaded Rp 3/8
V Threaded NPT 1/4"
Y Threaded NPT 3/8"
E Cementing d.10 mm
F Cementing d.12 mm
Q Tubing 19/27 + 25/34
W Tubing 32/41 + 38/48
A1 Threaded Rp 3/4"
A2 Threaded Rp 1 1/4"
A3 Threaded NPT 3/4”
A4 Threaded NPT 1 1/4”
Power plug
F EU (Schuko)
B USA, Canada (120 V)
GUK
I Australia
E Switzerland
J Japan
DME and DMS
5
Functions
Overview of functions
2 to 48 60 to 940 AR 60 to 940 B variant A variant B variant D
DME and DMS
DME DMS
TM01 8941 0900
Capacity control, see page 8
Internal stroke frequency
control
Internal stroke speed control zzz
Control panel, see page 10
Capacity setting in liters,
milliliters or US gallons
Display with background light
and soft-touch buttons
Easy set-up menu with
language options
On/off button zzzzz
Maximum capacity button
(priming)
Green indicator light for
operating indication
Red indicator light for
fault indication
Control panel lock zzzzz
Side-fitted as an option zzzz
Operating modes, see page 13
Manual control zzzzz
Pulse control zz z
Analog 0/4-20 mA control zz z
Timer-based batch control zz
Pulse-based batch control zz
Functions, see page 17
Dosing monitoring zz z
Dual-level control zz z
Calibration of pump to actual
installation
Anti-cavitation
(reduced suction speed)
Capacity limitation zzz
Counters for strokes, operating
hours and power on/off
Fieldbus communication
(variants AP and AG)
Overload protection zz
Error message in display zz
Leakage sensor z
Dosing signal output z
Power supply, page 16
Switch-mode power supply zzz
Inputs/outputs, see page 19
Input for pulse control zz z
Input for analog 0/4-20 mA
control
Input for dual-level control zz z
Input for external start/stop zz z
Alarm relay output (variant AR) zz z
Dosing output z
Input for external on/off switch zz z
zzzzz
zzzzz
zzzzz
zzzzz
zzzzz
zzzzz
zzzzz
zzzzz
zzz
zzzzz
zz
zz z
TM02 8337 4903
TM02 8338 4903
TM01 8941 0900
TM01 8943 0900
TM02 8973 1304
6
Functions
Capacity range
p
p
[bar]
[psi]
18
240
16
DME 2-18
14
200
12
160
10
120
80
40
8
DMS 2-11
6
4
2
0
0
1 2.5 4 7.5 1212 18.5 48 60 150 376 940
DMS, DME
DME 8-10
DME 60-10 DME 375-10
DME
DMS
8-5
DME
12-6 19-6
DMS
12-3
DME 150-4 DME 940-4
DME 48-3
DMS
4-7
11 2 3 4 5 6 7 8 1010 20 30 40 50 60 80 100100 200
DME and DMS
Q [l/h]
Q [US GPH]
The maximum capacity is available at any counter pressure withi n the pump's
specified range if it has been calibrated to the actu al installation.
TM02 9945 4604
7
Functions
Capacity control, DME
DME
The electronically controlled variable-speed motor of
the DME pumps provides optimum control of the stroke
speed. As shown in the figure below, the duration of
each suction stroke is constant while the duration of
each discharge stroke varies according to the capacity
set, resulting in optimum discharge flow in any operating situation.
The advantages are as follows:
• The pump is always operating at full stroke length,
irrespective of the capacity set, for optimum accuracy, priming and suction.
• A capacity range of 1:1000 (DME 2 to 48) for each
pump size.
Capacity
setting
100%
50%
10%
Discharge
Suction
Discharge
Suction
Discharge
Suction
• A capacity range of 1:800 (DME 60 to 940) for each
pump size.
• Even and constant dosing ensuring an optimum
mixing ratio at the injection point.
• Significant reduction of pressure surges, preventing
mechanical stress on diaphragm, tubes, connections and other dosing parts exposed to leakage
and wear.
• The installation is less affected by long suction and
discharge lines.
• Easier dosing of highly viscous and gas-containing
liquids.
The optimum dosing control shown below takes place
in any operating mode.
duration
duration
duration
TM01 8944 0900
8
Functions
Capacity control, DMS
DMS
The electronically controlled synchronous motor of the
DMS offers similar advantages of the DME pumps. As
shown in the figure below, the suction and discharge
stroke speeds are constant while the stroke frequen cy
varies according to the capacity set.
The sinusoidal movement of the diaphragm offers the
following advantages:
• The pump is always operating at full stroke length,
irrespective of the capacity set, for optimum accuracy, priming and suction.
Capacity
setting
100%
50%
10%
Discharge
Suction
Discharge
Suction
Discharge
Suction
• A capacity range of 1:100 for each pump size.
• Reduction of pressure surges, preventing mechanical stress on diaphragm, tubes, connections and
other dosing parts exposed to leakage and wear.
• The installation is less affected by long suction and
discharge lines.
• Easier dosing of highly viscous and gas-containing
liquids.
duration
duration
duration
TM01 8945 0900
9
Functions
DME and DMS
Control panel
LCD Display
Menu/
accept
Navigation/
settings
100%
Priming button
Control panel fitted to the front.
ml/h
Navigation/
settings
settings
Green
indicator light
Red
indicator light
On/off button
Indicator lights and alarm output
(DME 2 to 48, DMS)
The green and red indicator lights on the pump indicate
operation or fault.
In control variant AR, the pump can activate an external
alarm signal by means of a built-in alarm relay. The
alarm signal is activated by means of an internal potential-free contact.
The functions of the indicator lights and the built-in
alarm relay appear from the table below.
Condition
TM01 8946 1202TM01 8941 0900TM01 8949 0900
Pump running On Off
Pump paused Flashing Off
Pump fault Off On EEPROM
Supply failure Off Off Off
Pump running, low
chemical level
2
Green
Red LED Display
LED
On On
Normal
indication
Normal
indication
Normal
indication
Alarm
output
132
NC NO C
132
NC NO C
23
1
NC NO C
132
NC NO C
23
1
NC NO C
1
Control panel fitted to the side (not DMS-B).
Priming button
The pump control panel incorporates a button.
Press this button if the maximum capacity is required
over a short period, e.g. during start-up. When the
button is released, the pump automatically returns to
the previous operating mode.
When the buttons and are pressed simultane-
100%
ously, the pump can be set to run for a specific number
of seconds at maximum capacity. The remaining
numbers of seconds will appear in the display. This
feature is useful when flushing the pump. The
maximum value is 300 seconds.
Press to stop the pump before the set time has
passed.
100%
Empty tank
Analog signal
< 2 mA
The pump is not dosing
enough according to the
signal from the dosing
monitor
More pulses than capacity On On
Overheated Off On
1
Control variant AR, only.
2
Requires connection to level sensors.
3
Requires dosing monitor function activated and a dosing
monitor device connected to the pump.
2
3
Off On
Off On
On On
indication
indication
indication
indication
Normal
Normal
Normal
Normal
MAX
TEMP
23
1
NC NO C
23
1
NC NO C
23
1
NC NO C
23
1
NC NO C
23
1
NC NO C
10
Functions
DME and DMS
Indicator lights and alarm output (60 to 940)
Condition Green LED Red LED Display
Pump running On Off
Set to stop Flashing Off
Normal
indication
Normal
indication
Pump fault Off On EEPROM
Supply failure Off Off Off
Pump running, low
chemical level
Empty tank
2
2
On On LOW
Off On EMPTY
Alarm
output1
132
NC NO C
132
NC NO C
1
NC NO C
132
NC NO C
1
NC NO C
1
NC NO C
23
23
23
Condition Green LED Red LED Display
1
Control variant AR, only.
2
Requires connection to level sensors.
3
Requires activation of the dosing monitoring function and connection
to a dosing monitor.
4
Please contact a Grundfos service centre.
5
Alarms can be reset after fault conditions are back to normal.
6
The pump will make 10 attempts to restart before going into
permanent off mode.
output1
Alarm
Analog signal < 2 mA Off On NO mA
The dosed quantity is
too small according to
the signal from the
dosing monitor
3
On On
Overheating Off On
Internal
communication failure
Internal Hall Failure
Diaphragm failure
(leakage)
Max. pressure
exceeded
More pulses than
capacity
5
5
Off On
4
Off On HALL
Off On LEAKAGE
6
Off
On
On On
NO
FLOW
MAX
TEMP
INT
COM
OVER-
LOAD
MAX
FLOW
23
1
NC NO C
23
1
NC NO C
23
1
NC NO C
23
1
NC NO C
23
1
NC NO C
23
1
NC NO C
23
1
NC NO C
23
1
NC NO C
No detection of
motor rotation
4
On On ORIGO
23
1
NC NO C
11
Functions
Menu
The DME and DMS dosing pumps feature a userfriendly menu which is activated by pressing the
button. During start-up, all texts will appear in the
English language, but other languages can be selected
(see page 16).
The example shown below applies only to DME 60 to
940 pumps.
DME and DMS
mA
D68se
12
Functions
DME and DMS
Operating modes
Manual control
The pump is dosing constantly according to the quantity
set in l/h or ml/h by means of the buttons and .
It automatically changes over between the measuring
units.
Setting range, DME:
DME
2-18 0.00066 -
8-10 0.002 -
12-6 0.0032 -
19-6 0.0049 -
48-3 0.0127 -
60-10 0.0198 - 15.85 75 - 60
150-4 0.0495 - 39.63 187.5 - 150
375-10 0.1238 - 99.06 468.75 - 375
940-4 0.3104 - 248.32 1175 - 940
The figures in brackets indicate the maximum
GPH to GPH ml/h to l/h
capacity when the anti-cavitation function is activated.
See page 15 for adjusted DME 60 to 940 capacities.
Setting range, DMS:
DMS
2 0.0066 - 0.66 2.5 - 2.5
4 0.0105 - 1.05 40 - 4
8 0.0198 - 1.98 75 - 7.5
12 0.0317 - 3.17 120 - 12
GPH to GPH ml/h to l/h
Adjustable Flow Range
0.66
(0.47*)
1.98
(1.47*)
3.17
(2.37*)
4.88
(3.83*)
12.68
(9.77*)
Adjustable Flow Range
2.5 -
7.5 -
12 -
18.5 -
48 -
2.5
(1.8*)
7.5
(5.6*)
12
(9*)
18.5
(14.5*)
48
(37*)
Setting range, DME:
DME 2-18: 0.000023 ml/pulse - 5.0 ml/pulse
DME 8-10: 0.000069 ml/pulse - 15.0 ml/pulse
DME 12-6: 0.000111 ml/pulse - 24.0 ml/pulse
DME 19-6: 0.000204 ml/pulse - 37.0 ml/pulse
DME 48-3: 0.000530 ml/pulse - 96.0 ml/pulse
DME 60-10: 0.000625 ml/pul se - 120 ml/pulse
DME 150-4: 0.00156 ml/pulse - 300 ml/pulse
DME 375-10: 0.00392 ml/pulse - 750 ml/pulse
DME 940-4: 0.009 80 ml/pulse - 1880 ml/pulse.
Setting range, DMS:
DMS 2: 0.00232 ml/pulse - 50 ml/pulse
DMS 4: 0.00370 ml/pulse - 80 ml/pulse
DMS 8: 0.00695 ml/pulse - 150 ml/pulse
DMS 12: 0.01110 ml/pulse - 240 ml/pulse
Analog 4-20 mA control
Applies to DME and DMS-A
The pump is dosing according to an external analog
signal. The dosed capacity is proportional to the input
value in mA.
4-20 (default): 4 mA = 0%
20 mA = 100%
20-4: 4 mA = 100%
20 mA = 0%
0-20: 0 mA = 0%
20 mA = 100%
20-0: 0 mA = 100%
20 mA = 0%.
The maximum capacity limitation, see page 15, will
influence the capacity. 100% (20 mA) corresponds to
the maximum capacity or the set capacity limitation.
Pulse control
Applies to DME and DMS-A.
The pump is dosing according to an external pulse
signal, e.g. from a water meter.
There is no direct relation between pulses and dosing
strokes. The pump automatically calculates its optimal
speed to ensure the required quantity is dosed for each
pulse. The quantity to be dosed is set in ml/pulse. The
pump adjusts its speed and/or stroke frequency
according to two factors:
• frequency of external pulses and
• the set quantity per pulse.
100
80
60
40
4-20 mA signal
20
Maximum capacity [%]
0
0 4 8 12 16 20
Input signal [mA]
4-20 mA signal
TM01 8218 0100
13
Functions
DME and DMS
Timer-based batch control
Applies to DME
The pump is dosing the set quantity in batches at
maximum capacity or the set capacity limitation.
The time until the first dosing (NX) and the following
sequences (IN) can be set in minutes, hours and days.
The maximum time limit is 9 days, 23 hours and 59
minutes (9:23:59).
The lowest acceptable value is one minute. IN must be
higher than the time required to perform one batch. If IN
is lower than the time required, the next batch will be
ignored. In case of supply failure, the set dosing quantity, the IN time and the remaining NX time are stored.
When the supply is reconnected, the pump will start up
with the NX time at the time of the supply failure. This
way the timer cycle will continue, but it will be delayed
according to the time of the supply failure. This feature
is not available on variant "B" pumps.
Quantity pr. batch
Setting range (applies to DME only)
Timer-based and pulse-based batch control
DME 2:
DME 8:
DME 12:
DME 19:
DME 48:
DME 60:
DME 150:
DME 375:
DME 940:
0.23 ml/batch to 5 l/batch
0.00006 G/batch to 1.32 G/batch
0.69 ml/batch to 15 l/batch
0.00018 G/batch to 3.96 G/batch
1.11 ml/batch to 24 l/batch
0.00029 G/batch to 6.34 G/batch
2.04 ml/batch to 37 l/batch
0.00053 G/batch to 9.77 G/batch
5.3 ml/batch to 96 l/batch
0.0014 G/batch to 25.4 G/batch
6.25 ml/batch to 120 l/batch
0.0017 G/batch to 31.7 G/batch
15.6 ml/batch to 300 l/batch
0.0041 G/batch to 79.3 G/batch
39.1 ml/batch to 750 l/batch
0.01 G/batch to 198.1 G/batch
97.9 ml/batch to 1880 l/batch.
0.025 G/batch to 496.7 G/batch
Quantity pr. batch
:
NX
IN
Pulse-based batch control
Applies to DME
The pump is dosing the set quantity in batches at
maximum capacity or the set capacity limitation. The
quantity is dosed every time the pump receives an
external pulse. If the pump receives new pulses before
the batch is completed, these pulses will be ignored.
However the manually control DME B cannot be
controlled externally.
t
TM01 8942 0900
Pulse
Pulse
TM01 8947 0900
Anti-cavitation (2 to 48)
Applies to DME
When this function is selected, the pump extends and
smooths its suction stroke, resulting in softer priming.
The anti-cavitation function is used:
• when pumping liquids of high viscosity
• when pumping degassing liquids
• in the case of a long suction tube and
• in the case of a high suction lift.
The maximum capacity is reduced when this function is
selected, see table below.
Maximum capacity with anti-cavitation function
DME 2 0.475 GPH 1.8 l/h
DME 8 1.48 GPH 5.6 l/h
DME 12 2.38 GPH 9 l/h
DME 19 14.5 GPH 14.5 l/h
DME 48 9.77 GPH 37 l/h
14
Functions
Anti-cavitation (60 to 940)
The pump features an anti-cavitation function. When
this function is selected, the pump extends and
smoothes its suction stroke, resulting in softer priming.
The anti-cavitation function is used:
• when pumping liquids of high viscosity,
• in the case of a long suction tube and
• in the case of a high suction lift.
Depending on the circumstances, during the suction
stroke, the motor speed can be reduced by 75%, 50%
or 25% compared to the normal motor speed during the
suction stroke.
The maximum pump capacity is reduced when the anticavitation function is selected
Anti-cav max capacity (DME 60 to 150)
DME 60 to 940
DME Max cap. 75% 50% 25%
60 g/h. (l/h) 15.9. (60) 11.9. (45) 7.9. (30) 4.0. (15)
150 g/h. (l/h) 39.6. (150) 29.6. (112) 19.8. (75) 10.0. (38)
375 g/h. (l/h) 99.1. (375) 74.2. (281) 49.7. (188) 24.8. (94)
940 g/h. (l/h) 248.3. (940) 186.2. (705) 124.2. (470) 62.1. (235)
Maximum capacity limitation
Applies to DME
This function offers the possibility of reducing the
maximum capacity (MAX. CAP). It influences the functions in which the pump is normally operating at
maximum capacity. Under normal operating conditions,
the pump cannot operate at a capacity higher than the
one stated in the display. This does not apply to the
priming button.
By means of this function, a large pump can be set to
act as a much smaller pump. Together with the 1:1000/
1:800 capacity range, the purposes of this function are:
DME and DMS
1
2
Small pump Large pump
2
3. To cover several needs with just one pump size.
4. To adapt the pump to a 4-20 mA signal control with
4 mA corresponding to 0% and 20 mA to the set
maximum capacity.
In this way it is possible for instance to use a DME 48
for dosing a very small quantity of liquid without
changing the input signal. See example below.
Example:
A DME 48 receives a 12 mA input signal from a control
instrument, resulting in a 50% output (according to the
analog curve on page 13) and a capacity of 24 l/h. A
new situation occurs where it is only necessary to dose
2 l/h. The maximum capacity limitation is set to 4 l/h.
The pump is still receiving a 12 mA signal resulting in a
50% output and a capacity of 2 l/h.
Q
Q
[l/h]
[US GPH]
48
12
44
11
40
10
36
9
32
8
28
7
24
6
20
5
16
4
12
3
8
2
4
1
0
0
0 4 8 12 16 20
1
n
o
i
t
a
t
i
m
i
l
.
p
a
c
o
N
h
/
l
4
=
.
t
i
m
i
l
.
p
a
C
[mA]
TM02 0158 3301TM02 9942 4604
1. To utilize the smooth and even dosing characteristics of the pump at low capacities to achieve
– improved chemical mixing,
– improved dosing through long discharge tubes and
– improved dosing of high-viscous liquids.
2. To improve the dosing of gas-containing liquids: In a
large pump, as compared to a small pump, the displaced volume (1) is much larger than the non-displaced volume (2).
The maximum capacity limitation will also reduce the
pump speed in timer-based batch control, pulse-based
batch control and during calibrati on where the pump is
usually operating at maximum capacity.
Calibration
After start-up, the dosing pumps can be calibrated to
the actual installation to ensure that the displayed value
(milliliters or liters) is correct. A calibration program in
the main menu facilitates this process.
15
Functions
Counters
The pump can display "non-resettable" counters for:
• "Quantity"
Accumulated dosed quantity in liters or US gallons.
• "Strokes"
Accumulated number of dosing strokes.
• "Hours"
Accumulated number of operating hours (power on).
• "Power ON"
Accumulated number of times the mains supply has
been switched on.
Languages
The display text can be displayed in one of the following
languages chosen in the set-up menu:
• English
•German
•French
•Italian
• Spanish
• Portuguese
•Dutch
• Swedish
• Finnish
•Danish
• Czech
•Slovak
• Polish
• Russian.
Integrated venting
The DME and DMS dosing pumps are provided with an
integrated vent valve. The valve makes it very easy to
prime the pump during start-up:
The vent valve must be connected to the tank by means
of 1/4" tubing.
DME and DMS
DME 60 to 940
Vent valve
Switch-mode power supply
Applies to DME
The DME pump is incorporates a switch-mode power
supply. This makes the pump independent of variations
in supply voltage and frequency. Operating range: 1 x
100-240 V, 50-60 Hz.
Level control
Applies to DME-A and DMS-A
The pump can be connected to a level control unit for
monitoring of the chemical level in the tank.
The pump can react to two level signals. The following
table shows the pump reactions to the sensor signals:
Level sensors Pump reaction
Upper sensor activated
Lower sensor activated
Applies to control variant AR
• Red indicator light is on.
• Pump running.
• Alarm relay activated.
• Red indicator light is on.
• Pump stopped.
• Alarm relay activated.
Bus communication
Applies to DME
The pump is available with an opti onal built-in module
for bus communication with GENIbus (variant AG, DME
2 to 48 only) or PROFIBUS (variant AP) systems.
These modules enable remote monitoring and setting
via the fieldbus system. All DME features are available
via bus communication. The PROFIBUS GDS-file can
be downloaded from www.grundfos.com/dosing.
TM02 7066 2503
For the larger pumps, the vent valve must be connected
to the tank by means of 5/8" ID tubing.
16
Vent valve
TM01 8420 5099
Diaphragm leakage sensor (DME 60 to 940)
The pump can be fitted with a leak sensor that connects
to the drain hole of the pump head. In the event of
diaphragm leakage, the sensor will activate the pump's
alarm relay.
Functions
Dosing monitoring
Applies to all DME 2 to 48 and DMS AR
Dosing stoke measured
DME and DMS
Dosing stoke measured
Dosing stoke measured
Monitor mounted on suction side
(DME and DMS)
Monitor mounted on discharge side
(DMS only)
The dosing monitor is designed to monitor the dosing of
liquids which may cause gas accumulation in the pump
head, thus stopping the dosing process even if the
pump is still operating.
For every measured dosing stroke, the dosing monitor
gives a pulse signal to the level input so that the pump
can compare performed pump strokes (from internal
stroke sensor) with externally measured physical
strokes (from the dosing monitor). If an external dosing
stroke is not measured together with the internal dosing
stroke, this is considered a fault that may have been
provoked by an empty tank or gas in the dosing head.
When used together with a DME pump, the monitor will
only operate if it is mounted on the suction side of the
pump.
When used together with a DMS (A, AR) pump, the
monitor will also operate if it is mounted on the
discharge side of the pump.
The dosing monitor should be connected to the level
input (pins 2 and 3). This input must be configured to
dosing monitoringin the pump's setup menu. Consequently, it cannot be used as level input.
Once the input has been set for dosing monitoring and
a dosing monitor has been connected and set, the
dosing monitoring function will be active.
Monitor mounted in dosing tube.
In discharge tube: DMS (in-line)
In suction tube: DME and DMS (in-line)
• Incorrect dosing stroke: There is no pulse from the
dosing monitor corresponding to the internal stroke
signal within the acceptable time (the pump is not
pumping).
Logic:
If two incorrect dosing strokes are performed, the pump
will continue operating, but it will change over to alarm
mode, like in case of "low level". The red indicator light
will be on and the alarm output, if any, will be activated
(variant AR).
For each correct stroke the counter is reset and the
alarm output, if any, is deactivated.
Operation in connection with vent valve:
TM02 2029 3201 - TM02 2030 3201 - TM02 2031 3201
Definitions:
• Correct dosing stroke: A pulse from the dosing monitor corresponds to the internal stroke signal within
acceptable time.
TM02 2048 4802
17
Functions
DME and DMS
It is possible to add a self-acting solution for liquids that
cause gas accumulation by using an automatic vent
valve. The solution is the dosing monitor with a pump
and an alarm output (control variant AR). The alarm
output thus activates the vent valve, which will automatically vent gas accumulated in the dosing head. When
the dosing head has been vented, the pump will start
pumping again, the alarm output will be deactivated
and the vent valve will close.
Control panel lock
It is possible to lock the buttons on the control p anel to
prevent maloperation of the pump. The locking function
can be set to "ON" or "OFF". The default setting is
"OFF".
A PIN code must be entered to change from "OFF" to
"ON". When "ON" is selected for the first time, "_ _ _ _"
will appear in the display. If a code has already been
entered, it will appear when an attempt to change to
"ON" is made. This code can either be re-entered or
changed.
Units
It is possible to select metric units (liter/milliter) and US
units (gallons).
Metric measuring units:
• In manual and analog modes, set th e quanti ty to be
dosed in liters per hour (l/h) or milliliters per
hour (ml/h).
• In pulse mode, set the quantity to be dosed in ml/
pulse. The actual capacity is indicated in liters per
hour (l/h) or milliliters per hour (ml/h).
• For calibration, set the quantity to be dosed in ml
per 100 strokes.
• In timer and batch modes, set the quantity to be
dosed in liters (l) or milliliters (ml).
• Under the "QUANTITY" menu item in the
"COUNTERS" menu, the dosed quantity is indicated
in liters.
US measuring units:
• In manual and analog modes, set the quantity to be
dosed in gallons per hour (gph).
• In pulse mode, set the quantity to be dosed in ml/
pulse. The actual capacity is shown in gallons per
hour (gph).
• For calibration, set the quantity to be dosed in ml
per 100 strokes.
• In timer and batch modes, set the quantity to be
• dosed in gallons.
• Under the "QUANTITY" menu item in the
"COUNTERS" menu, the dosed quantity is indicated
in gallons (gal).
The drawing below shows all possible settings.
18
3 x
Operating display
Operating display
Functions
Wiring diagram, DME 2 to 48 and DMS-A (AR)
See pages 30 and 32 for input/output data.
"NO" black
"NC" blue
"COM" brown
DME and DMS
5
4
Control cable
Product no.:
2 m cable: 96440447
5 m cable: 96440448
3
4
5
The level switch contacts (normally open) must be closed at low level/empty tank.
1
3
4
2
1
1
2
3
Level cable
Product no.:
2 m cable: 96440450
5 m cable: 96440451
2
3
1
4
Low level
Empty tank
Control input
Number/color
Function
Manual 2 2
Pulse 1 1
Pulse + external on/off 1 1 + 2 2
Analog – + mA signal
Analog + external on/off 2 2 – + mA signal
Timer + external on/off 2 2
Batch 1 1
1 = Contact for pulse signal / 2 = Contact for external on/off
Pumps in analog mode cannot be connected in series.
1/brown 2/white 3/bl ue 4/black 5/grey
Plug
Description
Level input
Number/color
Function
1/brown 2/white 3/blue 4/black
Low level Low level
Empty tank Em pty tank
Low level Em pty tank Low level + empty tank
Dosing monitoring Dosing monitoring
Plug
TM01 8422 5001
19
Functions
Wiring diagram, DME (60 to 940)
DME and DMS
3
1
Analog/Pulse/Leakage cable
Product no.:
2 m cable: 96440447
5 m cable: 96440448
2
3
5
1
4
4
5
2
Relay cable
Product no.:
2 m cable: 96534214
5 m cable: 96534215
2
3
5
1
4
2
1
3
2
1
3
3
1
Stop dosing cable
Product no.:
2 m cable: 96527109
5 m cable: 96527111
2
3
1
4
4
2
5
1
2
3
Level cable
Product no.:
2 m cable: 96440450
5 m cable: 96440451
TM0 27069 2503
Cable 1: Analog, pulse and leakage input
Number/color 1/brown 2/white 3/blue 4/black 5/grey
Function
Analog input 4-20 mA (-) 4-20 mA input (+) 4-20 mA input
Pulse potential-free potential-free
Pulse 5 V Gnd
Leakage potential-free potential-free
Leakage 5 V Gnd
Cable 2: Output for alarm relay
Number/color 1/brown 2/white 3/blue
Function
Alarm relay output Common Normally open Normally closed
20
Functions
DME and DMS
Cable 3: Stop dosing input and dosing monitor or dosing output
Number/color 1/brown 2/white 3/blue 4/black 5/grey
Function
Stop input 5 V Gnd
Stop input potential-free potential-free
Dosing monitor potential-free potential-free
Dosing monitor Gnd 5 V
Dosing output
(pump running)
Open collector (NPN) can be used for a relay or a lamp.
Useful when the load (e.g. a relay) has one side
connected to a power supply which is not the same one
as connected to the sensor.
When the dosing output is activated, the output
provides the Gnd to the load.
Recommended supply: max. 24 VDC.
Max. current: 100 mA.
Open collector
(NPN)
Gnd
Cable 4: Level input
Number/color 1/brown 2/white 3/blue 4/black
Function
Empty tank input potential-free* potential-free*
Empty tank input 5 V Gnd
Low level input potential-free* potential-free*
Low level input 5 V Gnd
The function for the potential-free contact sets can be chosen from the display (NO = Normally Open and NC = Normally Closed).
21
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