Page 1
Operating Instructions
for
Plastic Flow Meter
Model: KSM
Page 2
KSM
1. Contents
1. Contents ........................................................................................................ 2
2. Note .............................................................................................................. 3
3. Regulation Use .............................................................................................. 3
4. Operating Principle ........................................................................................ 4
5. Instrument Inspection .................................................................................... 4
6. Mechanical Connection ................................................................................. 4
7. Electrical Connection .................................................................................... 5
8. Operation ...................................................................................................... 6
9. Technical Data .............................................................................................. 7
10.Order Codes ................................................................................................. 8
11.Maintenance ............................................................................................... 10
12.Dimensions ................................................................................................. 11
13.EU Declaration of Conformance .................................................................. 12
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
D-65719 Hofheim
Tel.: +49(0)6192-2990
Fax: +49(0)6192-23398
E-Mail: info.de@kobold.com
Internet: www.kobold.com
page 2 KSM K08/0818
Page 3
KSM
2. Note
Please read these operating instructions before unpacking and putting the unit
into operation. Follow the instructions precisely as described herein.
The devices are only to be used, maintained and serviced by persons familiar
with these operating instructions and in accordance with local regulations
applying to Health & Safety and prevention of accidents.
When used in machines, the measuring unit should be used only when the
machines fulfil the EC-machine guidelines.
PED 2014/68/EU
In acc. with Article 4 Paragraph (3), "Sound Engineering Practice", of the
PED 2014/68/EU no CE mark.
Pipe
Table 8
Group 1
dangerous fluids
KSM-x001 – KSM-x010 Art. 4, § 3 Art. 4, § 3
KSM-x020 – KSM-x600 Kat. I Art. 4, § 3
no dangerous fluids
Table 9
Group 2
3. Regulation Use
Any use of the Plastic Flow Meter, model: KSM, which exceeds the
manufacturer’s specification, may invalidate its warranty. Therefore any resulting
damage is not the responsibility of the manufacturer. The user assumes all risk
for such usage.
KSM K08/0818 page 3
Page 4
KSM
4. Operating Principle
The Plastic Flow Meter model: KSM operates according to the variable area
principle, in which the float is free to move without friction inside the measuring
tube. The reading edge corresponds to the larger diameter of the float. The
standard flow meter is equipped with a scale for water (+20°C), a percentage
scale, O-rings, 2 adjustable set-point indicators and a rail for accessories; on
each end, two threaded cap-screws accommodate various connectors (see
Section 9: Technical Data; Connections). For the operation with bistable reed
switches the float will be supplied with internal magnets.
5. Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should damage to a device be visible, we recommend a thorough inspection of
the delivery packaging. In case of damage, please inform your parcel service /
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
The standard delivery includes:
Plastic Flow Meter model: KSM
Operating Instructions
6. Mechanical Connection
Before Installation:
Remove all transportation safety locks and ensure that no packing material
remains within the unit.
Be sure that the maximum allowable operating pressure and temperature is
not exceeded (see Technical Data).
Install the flow meter in the piping system, making certain the instrument is
under no mechanical stress/tension (install support bracing if necessary).
page 4 KSM K08/0818
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KSM
Protect the measuring tube from external damage.
Avoid pressure peaks in the measuring tube, e.g. from sudden surges or
stoppage of flow.
The units with bistable reed switch may not be installed within an inductive
field.
If possible, immediately after making mechanical connections, check whether
the connections are properly sealed with no evidence of leakage.
Detailed information regarding installation of float flow meters is available
in VDI/VDE guidelines 3513.
7. Electrical Connection
Reed contact, bistable (option)
Ensure that the electrical supply lines are
disconnected from power.
Loosen the plug-cap holding screw and remove the
cap from the switch housing.
Connect the supply lines inside the plug-cap in
accordance with the connection diagram opposite.
If the set point has not yet been adjusted, it may be
done at this point. (see section 8, 'Operation').
Set the plug to the socket and fix it with the safety
screws.
Attention! The stated electrical parameters of the reed switch may not be
exceeded, even for a short period of time. For switching higher power
ratings, we recommend a contact protection relay (e.g. our model MSR) or
any other interposing relay.
After connecting the external devices, and adjusting the switch housing to the
desired switch points, all the connection work is completed. The unit is ready for
operation.
KSM K08/0818 page 5
Page 6
KSM
8. Operation
In order to initialise the bistable switching function, it is essential that the
float-travel activates the contact once in each direction.
Adjustment of limit-values
The switch-point can be adjusted to the desired levels by using both red sliders
as reference points.
Reference edge for falling flow: bottom-edge, switch housing
Reference edge for rising flow: approx. 5 mm above the bottom-edge of
switch housing.
Slide the switch housing up or down until the reference edge coincides with the
desired switch-point scale reading.
Hysteresis
Hysteresis is the difference between the level at which “switch-on” occurs during
rising flow and the level at which “switch-off” occurs during decreasing flow. The
hysteresis is approximately 5 mm on the float scale.
Overranging
With non-pulsating flow, the maximum flow rate can be exceeded. Only an
increase in pressure loss will result (max. permissible operating pressure must
not be exceeded!)
page 6 KSM K08/0818
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KSM
9. Technical Data
Housing: KSM-1...: Trogamide-T (PA)
KSM-2...: Polysulfone
Connections: ½”...3½”, see order codes
Float: PVDF
Guide rod: PVDF/stainless steel for the three largest sizes
Seals: EPDM (KSM-1.../KSM-2...)
FPM (KSM-3...)
Max. temperature: KSM-1...: 0-60 °C
KSM-2...: 0-100 °C
with contact: 85 °C
Max. pressure: KSM-x0xx, KSM-x1xx: 16 bar
KSM-x201, KSM-x301, KSM-x601: PN 10
Accuracy: ±4% F.S.
Repeatability: 1%
Reed contact (optional):
Bistable Reed contact (N/O) on rising flow
Max. ambient temperature: 0...55°C
Max. power: 230 V
Hysteresis: approx. 3 ...12 mm span
Protection: IP 65
(While upgrading a unit with contact, the float must be replaced by a float with
integrated magnet.)
Connections (optional):
(only KSM-1... and KSM-2...)
Following connections are available with cap-screws:
Glue-in connection made of PVC (max. 60°C; PN 10)
Female thread made of PVC (max. 60°C; PN 10)
Female thread made of cast iron
Respective connection sizes are listed in the tables in Section 10 “Ordering
Information”
10 W / 12 VA; 0.5 A
AC;
KSM K08/0818 page 7
Page 8
KSM
10. Order Codes
Medium liquids
The following scales are available for liquids
Model Standard
KSM-..001 15-150 19 - - 0.25-2.5 3-46 0.5-7 20-130
KSM-..005 50-500 19 - - 0.8-8 10-270 2.5-70 60-460
KSM-..010 100-1000 19 0.1-1 - 1.7-17 40-600 6-220 120-900
KSM-..020 200-2000 26 0.2-2 0.056-0.56 3.3-33 100-1400 20-600 200-1900
KSM-..030 300-3000 26 0.3-3 0.08-0.8 5-50 200-2000 50-1200 300-2700
KSM-..060 600-6000 26 0.6-6 0.17-1.7 10-100 400-4600 200-3400 800-5600
KSM-..120 1200-12000 26 1.2-12 0.34-3.4 20-200 800-8400 300-5600 1200-10000
KSM-..201 2000-20000 26 2.0-20 0.55-5.5 33-330 1400-15000 500-11000 2000-18000
KSM-..301 3000-30000 26 3.0-30 0.83-8.3 50-500 2000-20000 1000-14000 3000-25000
KSM-..601 8000-60000 34 8.0-60 - - - - -
* for KSM-2… and KSM-3… only
Order Details (Example: KSM-1005H K32 R1)
Measuring
range water
[L/h]
15 - 150
50 - 500
100 - 1000
200 - 2000
300 - 3000
600 - 6000
1200 - 12000
2000 - 20000
3000 - 30000
8000 - 60000
Water
[L/h]
Order no.
Trogamide
KSM-1001... KSM-2001...
KSM-1005… KSM-2005…
KSM-1010… KSM-2010…
KSM-1020… KSM-2020…
KSM-1030... KSM-2030...
KSM-1060... KSM-2060...
KSM-1120... KSM-2120…
KSM-1201... KSM-2201...
KSM-1301… KSM-2301…
KSM-1601… KSM-2601…
Pressure
loss
[mbar]
Order no.
PSU
Water
3
[m
/h]
H= L/h water
Q= m³/h water
M= L/h water min
S= L/h water s
H= L/h water
Q= m³/h water
M= L/h water min
S= L/h water s
H= L/h water
Q= m³/h water
M= L/h water min
S= L/h water s
H= L/h water
Q= m³/h water
M= L/h water min
S= L/h water s
Water
Scale Option
[L/s]
Special scale
Water
[L/min]
(for KSM-1..., KSM2...only)
000 = without auxiliary screwed fitting
K32= glue-in connection Da32 (PCV)
P15= PVC G 1/2 IG
P20= PVC G 3/4 IG
P25= PVC G 1 IG
T25= malleable cast iron G 1 IG
V32= PVDF (Welding sleeve) Da32
F25= PVC flange DN 25
000= without auxiliary screwed fitting
K50= glue-in connection Da50 (PVC)
P25= PVC G 1 IG
P32= PVC G 1 1/4 IG
P40= PVC G 1 1/2 IG
T40= malleable cast iron G 1 1/2 IG
V50= PVDF (Welding sleeve) Da50
F40= PVC flange DN 40
000= without auxilary screwed fitting
K63= glue-in connection Da63 (PVC)
P25= PVC G 1 IG
P40= PVC G 1 1/2 IG
P50= PVC G 2 IG
T50= malleable cast iron G 2 IG
V63= PVDF (Welding sleeve)Da63
F50= PVC flange DN 50
000= without auxiliary screwed fitting
K75= glue-in connection Da75(PVC)
P40= PVC G 1 1/2 IG
P50= PVC G 2 IG
T65= malleable cast iron G 2 1/2 IG
V75= PVDF (Welding sleeve) Da75
F65= PVC flange DN 65
NaOH
30 %
[L/h]
screwed fitting
NaOH
50 %
[L/h]
HCI*
30-33 %
[L/h]
Option
contact
R0= without
contact
R1= 1 contact
R2= 2 contacts
R0= without
contact
R1= 1 contact
R2= 2 contacts
R0= without
contact
R1= 1 contact
R2= 2 contacts
R0= without
contact
page 8 KSM K08/0818
Page 9
KSM
Medium air
The following scales are available for air
Typ
KSM-..001 0.8 - 5 1.2 - 7 1.4 - 9 1.6 - 10 2 - 12 2 - 13 2 - 14 2.5 - 14 2.5 - 15
KSM-..005 2 - 18 3 - 25 4 - 30 5 - 35 5 - 40 6 - 43 6 - 45 7 - 50 6 - 52
KSM-..010 4 - 34 6 - 50 8 - 60 8 - 70 10 - 74 10 – 84 10 - 90 12 - 96 12 - 100
KSM-..020 10 - 70 12 - 90 14 - 120 15 - 130 20 - 150 20 - 160 20 - 170 20 - 190 20 - 200
KSM-..030 10 - 90 15 - 130 20 - 160 20 - 190 25 - 210 25 - 230 30 - 250 30 - 260 30 - 280
KSM-..060 22 - 190 30 - 260 40 - 380 40 - 400 50 - 450 50 - 480 75 - 500 70 - 550 75 - 550
KSM-..120 45 - 370 60 - 520 80 - 660 100 - 760 100 - 840 100 - 900 100 - 1000 120 - 1000 140 - 1100
KSM-..201 60 - 580 90 - 800 100 - 1060 120 - 1200 150 - 1300 150 - 1500 150 - 1500 200 - 1700 200 - 1800
KSM-..301 100 - 860 140 - 1200 200 - 1500 200 - 1700 250 - 1900 250 - 2100 300 - 2200 300 - 2400 300 - 2500
Order Details (Example: KSM-1010 2 P15 R0)
Meas. range
air m³
(0 bar rel.)
0.8 - 5
10 - 70
10 - 90
22 - 190
45 - 370
55 – 545
80 - 758
2 - 18
4 - 34
m³N/h
(0 bar rel.)
m³N/h
(1 bar rel.)
m³N/h
(2 bar rel.)
m³N/h
(3 bar rel.)
m³N/h
(4 bar rel.)
(5 bar rel.)
Order no.
/h
N
Trogamide
KSM-1001… KSM-2001…
KSM-1005… KSM-2005…
KSM-1010… KSM-2010…
KSM-1020… KSM-2020… 000 = without auxiliary screwed fitting
KSM-1030… KSM-2030…
KSM-1060... KSM-2060... 000 = without auxiliary screwed fitting
KSM-1120… KSM-2120…
KSM-1201… KSM-2201…
KSM-1301… KSM-2301…
Order no.
PSU
Scale
Range
see Table
0 = 0 bar rel.
1 = 1 bar rel.
2 = 2 bar rel.
3 = 3 bar rel.
4 = 4 bar rel.
5 = 5 bar rel.
6 = 6 bar rel.
7 = 7 bar rel.
8 = 8 bar rel.
Option
screwed fitting
000 = without auxiliary screwed fitting
K32 = glue-in connection Da32 (PVC)
P15 = PVC G 1/2 IG
P20 = PVC G 3/4 IG
P25 = PVC G 1 IG
T25 = malleable cast iron G 1 IG
V32 = PVDF (Welding sleeve) Da32
F25 = PVC flange DN 25
K50 = glue in connection Da50 (PVC)
P25 = PVC G 1 IG
P32 = PVC G 1 1/4 IG
P40 = PVC G 1 1/2 IG
T40 = malleable cast iron G 1 1/2 IG
V50 = PVDF (Welding sleeve) Da50
F40 = PVC flange DN 40
K63 = glue in connection Da63 (PVC)
P25 = PVC G 1 IG
P40 = PVC G 1 1/2 IG
P50 = PVC G 2 IG
T50 = malleable cast iron G 2 IG
V63 = PVDF (Welding sleeve) Da63
F50 = PVC flange DN 50
000 = without auxiliary screwed fitting
K75 = glue in connection Da75 (PVC)
P40 = PVC G 1 1/2 IG
P50 = PVC G 2 IG
T65 = malleable cast iron G 2 1/2 IG
V75 = PVDF (Welding sleeve) Da75
F65 = PVC flange DN 65
m³N/h
m³N/h
(6 bar rel.)
m³N/h
(7 bar rel.)
Option
contact
R0 = without contact
R1 = 1contact
R2 = 2 contacts
R0 = without contact
R1 = 1 contact
R2 = 2 contacts
R0 = without contact
R1 = 1 contact
R2 = 2 contacts
R0 = without contact
m³N/h
(8 bar rel.)
KSM K08/0818 page 9
Page 10
KSM
11. Maintenance
If the medium to be measured is clean, the series KSM is virtually maintenancefree. If deposits form on the inner housing or parts, periodic cleaning of the unit is
recommended. Remove the units from the piping with a suitable tool; clean the
flow meter with a suitable cleaning agent or make use of an ultrasonic bath.
If using the setpoint switch, it is particularly important to guard against
contamination by ferritic (metal) contaminants. These can be eliminated by using
the KOBOLD model MF magnetic filter (or equivalent).
page 10 KSM K08/0818
Page 11
KSM
12. Dimensions
Da
DN
L
L2
L1
G
D
DN G Da L L1 L2 (mm) approx. D
Model [mm] [mm] [mm]
approx.
KSM-..001 25 R 1 1/2 32 335 341 390 385 432 441 480 -- -- -- 385 60
KSM-..005 25 R 1 1/2 32 335 341 390 385 432 441 480 -- -- -- 385 60
KSM-..010 25 R 1 1/2 32 335 341 390 385 432 441 480 -- -- -- 385 60
KSM-..020 40 R 2 1/4 50 335 341 401 403 -- -- 467 477 525 -- 403 83
KSM-..030 40 R 2 1/4 50 335 341 401 403 -- -- 467 477 525 -- 403 83
KSM-..060 50 R 2 1/4 63 335 341 411 417 -- -- 482 -- 498 558 417 103
KSM-..120 50 R 2 3/4 63 335 341 411 417 -- -- 482 -- 498 558 417 103
KSM-..201 65 R 2 3/4 75 335 342 412 457 -- -- -- -- 510 570 429 122
KSM-..301 65 R 3 1/2 75 335 342 412 457 -- -- -- -- 510 570 429 122
KSM-..601 65 R 3 1/2 75 335 342 412 457 -- -- -- -- 510 570 -- 122
Annealed-
cast-iron
Glue
conn.
PVC
G 1/2
PVC
G 3/4
PVC
G 1
PVC
G1 1/4
PVC
G 1 1/2
PVC
G 2
PVDF
welded
[mm]
approx.
KSM K08/0818 page 11
Page 12
KSM
13. EU Declaration of Conformance
We, KOBOLD-Messring GmbH, Hofheim-Ts, Germany, declare under our sole
responsibility that the product:
Plastic Flow Meter with Contact Model: KSM -...R1/R2
to which this declaration relates is in conformity with the standards noted below:
EN 61010-1:2011
Safety regulations for electrical measurement, control, regulation and Laboratory
equipment
EN 60529:2014
Protection through housing (IP-Code)
EN 50581:2012 Technical documentation for the assessment of electrical
and electronic products with respect to the restriction of hazardous substances
Also the following EC guidelines are fulfilled:
2014/35/EU Low Voltage Directive
2011/65/EU RoHS (category 9)
2014/68/EU PED
Category III (IV) Diagram 1, vessel, group 1 dangerous fluids
Module D, marking CE0575
Notified body: DNV GL
Certificate No. PEDD000000R
Hofheim, 02. Aug. 2018
H. Peters M. Wenzel
General Manager Proxy Holder
page 12 KSM K08/0818
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