Kobold PSR series User manual

Operating Instructions
for
Paddle Flow Monitor
Model: PSR-..., PSE-...

PSR/PSE
page 2 PSR/PSE K17/0618
1.Contents
1.Contents........................................................................................................2
2.Note ..............................................................................................................3
3.Instrument Inspection....................................................................................4
4.Regulation Use..............................................................................................4
5.Operating Principle........................................................................................5
6.Use in Hazardous Areas (PSx-2) ..................................................................5
6.1.General ................................................................................................5
6.2.Notes ...................................................................................................6
6.3.Electrical Contact.................................................................................6
6.4.Potential equalisation...........................................................................6
6.5.Electro-Static .......................................................................................7
6.6.Ultraviolet radiation ..............................................................................7
6.7.Propagating brush discharge ...............................................................7
7.Mechanical Connection.................................................................................8
8.Electrical Connection ....................................................................................9
9.Limit Switches ...............................................................................................9
10.Maintenance ...............................................................................................11
11.Technical Information..................................................................................12
11.1.General ..............................................................................................12
11.2.Model Label for IECEx- and ATEX-Version .......................................13
11.3.Model Code .......................................................................................13
12.Order Codes ...............................................................................................14
13.Recommended Spare Parts........................................................................17
14.Dimensions .................................................................................................17
15.EU Declaration of Conformance..................................................................18
16.Examination Certificate ...............................................................................20
17.IECEx Certificate.........................................................................................22
Manufactured and sold by:
Kobold Messring GmbH
Nordring 22-24
DE-65719 Hofheim
Tel.: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: www.kobold.com

PSR/PSE
PSR/PSE K17/0618 page 3
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.
Machine guidelines 2006/47 EC
No CE mark
By usage in machines, the measuring unit should be used only when the
machines fulfill the EC-machine guidelines.
as per PED 2014/68/EU
Pipe
Table 8
Group 1
dangerous fluids
Table 9
Group 2
non-dangerous
fluids
PSR-.. (1/4" - 1") Art. 4, § 3 Art. 4, § 3
PSR-132B and PSR-140B not deliverable Art. 4, § 3
PSR-232B and PSR-240B Cat. II Art. 4, § 3

PSR/PSE
page 4 PSR/PSE K17/0618
3.Instrument Inspection
Instruments are inspected before shipping and sent out in perfect condition.
Should the damage to a device be visible, we recommend a thorough inspection
of the delivery packing. In case of damage, please inform your parcel service/
forwarding agent immediately, since they are responsible for damages during
transit.
Scope of delivery:
Paddle Flow Monitor Model: PSR-.. / PSE-..
Operating Instructions
4.Regulation Use
Series PSR and PSE are used to monitor liquid flow. Instruments are provided
with an adjustable limit switch. Only low viscosity fluids that are compatible with
the material combination chosen are allowed to be monitored. If using higher
viscous media, large deviations in the specified switching range will occur.
The instruments are relatively insensitive to dirt, however large particles may
block the paddle, leading to erroneous alarm conditions; likewise, ferritic particles
may deposit on the magnet and lead to faulty operation. In case of doubt, please
contact the manufacturer.

PSR/PSE
PSR/PSE K17/0618 page 5
5.Operating Principle
The KOBOLD flow monitors of series PSE and PSR are used
where economical, reliable flow monitors are indicated.
Depending on the flow velocity respectively flow rate, the baffle
plate is deflected and moves the permanent magnet via the
balance arm into the switching range of the reed contact
mounted outside of the flow media.
The flat spring, which also serves as a support for the balance
arm, forces the baffle plate back to its rest position when there
is no flow. KOBOLD baffle plate flow monitors are supplied
completely assembled with fitting up to nominal size 40, or for
larger nominal pipe sizes - supplied without a pipe length for
direct insertion into standard T pieces or fittings. The sealing
takes place via PTFE tape.
6.Use in Hazardous Areas (PSx-2)
6.1. General
The paddle flow switch, being a mechanical component, has no inherent potential
ignition source. The mounted contact is suitable for usage in Ex-zone IIC and I as
an intrinsically safe component.
The measurement units can be used as follows:
In the Zone 0 (Gas-Ex, Cat. 1G) into explosion-group of IIA, IIB and IIC
In the Zone 20 (Dust-Ex, Cat. 1D)
In the Zone 2 (Gas-Ex, Cat. 3G) into explosion group of IIA, IIB and IIC
In the Zone 22 (Dust-Ex, Category 3D)
In the Zone 1 (Gas-Ex, Cat. 2G) into explosion group of IIA, IIB and IIC
In the Zone 21 (Dust-Ex, Category 2D)
In hazardous areas 1 and 2 in underground mining (category M1 and M2)
Regulation usage does not cause any zone inside the fitting or at paddle.
Exceptions are possible during start-up and shut-down of the plant.

PSR/PSE
page 6 PSR/PSE K17/0618
The medium temperature limit area is fixed as follows:
Model Medium Temperature Pmax
NBR-seal FPM-seal
PSR-2132**;
PSR-2140 -20....+70 °C -20...+110 °C 25 bar
all other -20...+70 °C -20...+110 °C 100 bar
6.2. Notes
The following points must be observed when using in hazardous area:
• The notes in every operating manual that is provided by the manufacturer must
be strictly observed.
• Fixed parts (eg due to frost or corrosion) may not be solved by force in an
explosive atmosphere present.
• Mechanical elements must be cleaned according to the conditions on site.
• The unit must be protected against external strikes.
• To ensure explosion protection, electrical and additional equipment must
comply with the requirements of applicable local zones and must be examined
separately by the installer of the machine / plant.
• It must be ensured that the device is included in the potential equalization.
• It is particularly important to ensure that no stray currents (due to engines that
are operated with frequency inverters, welding machines and / or corrosion
protection equipment) are performed on the devices.
• Direct dangerous electrostatic discharge to the resource should be avoided
• The device may only be exposed to small vibrations
• Freezing up of the device must be avoided.
6.3. Electrical Contact
The paddle flow switch can directly switch intrinsically safe circuits in Ex-zone or
may be used in intrinsically safe current circuits in combination with a certified
switching amplifier. The electrical connection is explained in chapter 8 “Electrical
Connection”.
6.4. Potential equalisation
The all metal flow meters are to be incorporated in potential equalization system
of the plant. This is achieved via metallic connection pipe.

PSR/PSE
PSR/PSE K17/0618 page 7
6.5. Electro-Static
The devices are to be protected against electrostatic unloading. The case of the
device is to be earthed electro-statically (for example with metal pipes). Besides,
the local potential balance is to be established according to local regulations.
The wires must be protected in the installation in the hazardous area “0” against
electro-static unloading. This can be done by using conducting pipes and rigid
covers.
6.6. Ultraviolet radiation
The instruments incl. cables should be protected against radiation.
6.7. Propagating brush discharge
In dust Ex-areas propagating brush discharges should be avoided on the plastic
parts and cables.

PSR/PSE
page 8 PSR/PSE K17/0618
7.Mechanical Connection
Before installation
Please check that the actual flow matches with the
switching range of the instrument.
Ensure that the allowable maximum operating
pressure and operating temperature of the
instruments will not be exceeded.
Remove all transport packing and be sure that no
packing material is left in the instrument.
The instrument may be installed in any position
(except PSR-..32 / PSR-..40 - for horizontal
installation only); however, the top half of the paddle
switch must be vertically positioned in relation to the
pipe axis, and the arrow on the threaded fitting must match the flow direction.
For dirty media, it is recommended that the upper housing will be installed as
close to vertical as possible, respectively with not more than 40° deviation from
vertical. This will prevent dirt from being deposited in the upper housing. When
this is not possible, we recommend the instrument to be cleaned more
frequently (see maintenance).
The application of PTFE tape or similar sealant to the connection threads is
recommended.
Check that the connection threads of the pipe are fully sealed.
Attention! Make sure that the supply voltage to the instrument conforms to
the value stated on the equipment label. For higher power loads, we
recommend our contact protection relay model MSR-10.
The inlet and outlet section needs to be minimum 5 x DN in front of and after the
flow meter.

PSR/PSE
PSR/PSE K17/0618 page 9
8.Electrical Connection
Ensure that the electrical supply lines are powerless.
Connect the connection cable with your supply cable.
The contact housing is made of glass-fibre reinforced plastic.
It is insulated in accordance with VDI 0720 Class II; separate
insulation measures are not necessary.
After connecting the external equipment, the instrument
is ready for operation.
9.Limit Switches
The instrument is supplied with an adjustable contact. The standard contact,
depending on the adjustments can be used either as N/O or N/C switch. The
instrument is supplied ex works as a normally open contact. Optionally, the
PSR/PSE can be ordered with an SPDT switch.
Contact mode
Depending on the positioning of the adjustable standard switch, the following
contact modes are available.
Normally open
The contact closes when the flow increases and the set point value is reached
or exceeded. The switch opens again with falling flow at the minimum value
based on the switch hysteresis.
Normally closed
The contact opens when the flow increases and the set point value is reached
or exceeded. The switch closes again with falling flow at the minimum value
based on the switch hysteresis.
Option: Changeover (SPDT) contact
The normally open and normally closed switch modes are simultaneously
available from the same position. When retrofitting the standard design with an
SPDT switch, the upper switch housing must be replaced at the same time.
brown black red

PSR/PSE
page 10 PSR/PSE K17/0618
Switch Point Adjustment
When adjusting the switch point, the clamp plate in the top of the upper housing
must be loosened, enabling the switching unit to be repositioned. For ease of
adjustment, the switching unit is marked with a white and a red arrow. The front
edge of the clamp plate serves as the adjustment marker.
Normally open contact
(standard setting, as shipped)
The switch range is adjustable in the
area of the red arrow. By sliding the
switching unit in the direction of flow,
the minimum switching value given in
the table is achieved. By sliding the
switching unit in the opposite direction,
the maximum listed switch value is
achieved.
Normally closed contact
The switch range is adjustable in the area of the white arrow. By sliding the
switch unit in the direction of flow, the minimum switch value given in the table is
achieved. By sliding the switch unit in the opposite direction, the maximum listed
switch value is achieved.
Option: Changeover contact
The following options for wiring apply:
Black and brown conductor = contact opens at decreasing flow.
Black and red conductor = contact closes at decreasing flow.
After successful adjustment, tighten the clamp plate by means of the screws.
Hysteresis
The Hysteresis is defined as the difference between the opening and closing flow
values of a contact. For example, the model PSR 11083 with minimal switching
adjustment and increasing flow is switching on at 2.3 l/min and will switch off at
1.6 l/min at decreasing flow. Contact hysteresis = 0.7 l/min.

PSR/PSE
PSR/PSE K17/0618 page 11
Contact protection
The reed contact may be damaged if the switch ratings are exceeded, especially
while switching inductive or capacitive loads. This can cause unsafe conditions.
By using a contact protection/isolation relay (e.g.: Model MSR 10), this problem
can be overcome and the lifespan and switch rating of the reed contact can be
extensively increased.
10. Maintenance
In cases the measured flow medium is not polluted, the PSR/PSE will remain
virtually maintenance-free. Ferritic (iron) particles in the medium may deposit on
the magnet, which can lead to problems. Bigger dirt particles can lead into
blocking of the balance arm. To avoid those conditions, we recommend the
installation of a magnet filter (e.g.: Magnet Filter model MFR).
Depending on the amount of dirt present in the medium, we recommend the
instrument to be checked and cleaned regularly.
Cleaning of the instrument
In hazardous areas the device requires regular maintenance and cleaning. The
intervals are determined by the operator according to the environmental stresses
on site. It should proceed as follows:
Shut-off the flow through the instrument.
Ensure that there is no flow through the pipe and that the pipe is empty and
not under pressure.
Loosen the sleeve nut with a wrench (hex size 30) (only PSR-..).
The upper switch housing and paddle arm can then be removed for cleaning.
When cleaning the paddle arm, check that the flat spring is not damaged or
bent.
Prior to reinstallation, check that the o-ring is placed correctly in the lower
housing. Dirt particles on the o-ring will lead to sealing problems.
Insert the leaf-spring/paddle assembly into the lower housing and replace the
upper housing. Note that the suspension disk of this assembly must be
correctly positioned within the recesses of the upper and lower housings.
Tighten the sleeve nut. Check that the upper half does not turn with the nut.
Check seal tightness.

PSR/PSE
page 12 PSR/PSE K17/0618
11. Technical Information
11.1. General
Tolerance of switching points: ±15 %
Medium temperature: -20…+70 °C (NBR – seal)
-10…+110 °C (FPM – seal), option
Ambient temperature: -20 °C to 50 °C
Max. pressure: 25 bar (PSR-1132.., PSR-1140..)
100 bar (all others)
Protection: IP 65
Preferred mounting position: upright, horizontal
PSE-1x52/PSE 1x14: only upright
Inlet/outlet: 5 x DN in each case
Electrical Details
Bistable reed contact
RN/O / N/C contact Standard
max. 2 A, max. 230 VAC/DC, max. 40 W, 40 VA
UChangeover contact Standard
max. 0.5 A, max. 150 VAC/DC, max. 20 W, 20 VA
CN/O / N/C contact
2 A, 20 VAC, 0.18 A, 230 VAC, max. 40 W
DChangeover contact
0.13 A, 150 VAC, 0.5 A, 40 VAC, max. 20 W
ATEX and IECEx
R, U N/O / N/C contact and Changeover contact
max. 2 A, max. 60 VAC/DC, max. 40 W, 20 VA
Ex-range: I M1 Ex ia I Ma
/ / II 1G Ex ia IIC T4/T3 Ga
II 1D Ex ia IIIC IP6x
T110 °C / 150 °C Da
Average electrical switch contact life (MTTF):
at max. electrical load: 105 switching operations
at half load (<10% max. load): 5*107 switching operations
at low load (<10V/<1mA): 108 switching operations

PSR/PSE
PSR/PSE K17/0618 page 13
Material
PSR/ PSE -11/-22 PSR/ PSE -12/-22
Case brass 58 stainless steel 1.4301
Baffle plate stainless steel 1.4301 stainless steel 1.4301
Leaf spring stainless steel 1.4310 stainless steel 1.4310
Balance arm stainless steel 1.4310 stainless steel 1.4310
Sleeve brass 58 stainless steel 1.4301
Magnet oxide ceramics oxide ceramics
Seal NBR FPM
Contact tube polyamide, glass-fibre-reinforced
Cable PVC (standard 1.5 m)
11.2. Model Label for IECEx- and ATEX-Version
KOBOLD Messring GmbH, Nordring 22-24, 65719 Hofheim, Deutschland
Model: PS*-** *** *** ** CE 0158 Year of Production
F-Nr. ****
BVS 09 ATEX C ***
IEC EX BVS 09.****
I M1 Ex ia I Ma
II 1G Ex ia IIC T4/T3 Ga
II 1D Ex ia IIIC T110 °C / T150 °C Da
-20 °C ≤Ta ≤50 °C
11.3. Model Code
PS*-** *** *** **
PSa-bc def ghi jk
a= Design: E=Insert Version, R=Inline Version
b= Version: 1=Standard, 2=IEC EX-Version
c= Material Combination, see Materials Chart
def= Range/Paddle, see Order Codes
ghi= Process Connection, see Order Codes
j= Contact Version: R=N/O-N/C, U=SPDT
k= Cable Version
PVC-cable:
1 = 1.5 m (standard)
2 = 2.0 m
4 = 3.0 m
6 = 4.0 m
8 = 5.0 m
P = PVC-cable, special length
S = silicone-cable (1.5 m length)
G = yellow PUR-cable (1.5 m length)
Y = silicone- or PUR-cable, special length

PSR/PSE
page 14 PSR/PSE K17/0618
12. Order Codes
Standard switching
ranges1)
Nominal
size
Qmax.
L/min.
water
Model
Connection Contact Cable version
Rising flow
rate L/min.
water
Falling
flow
rate
L/min.
water
Material
brass
Material
stainless
steel
2.3 – 4.7 1.6 – 4.6 DN 8 30 PSR-1108
3... PSR-1208 3... R08= G 1/4 N08= 1/4 NPT
R= N/O contact
(standard CE)
C= N/O contact
(cCSAus)
U= Changeover
contact
(standard CE)
D= Changeover
contact
(cCSAus)
PVC-cable
1 = 1.5m
(standard)
2 = 2.0m2)
4 = 3.0m2)
6 = 4.0m2)
8 = 5.0m2)
P = PVC cable,
special length3)
S = silicone
cable4) (1.5 m
length)
G = yellow
PUR-cable4)
(1.5 m length)
Y5) = silicone-
or PUR-cable,
special length
2.3 – 5.5 2.8 – 6.0 DN 10 40 PSR-1110 3.. PSR-1210
3... R10= G 3/8 N10= 3/8 NPT
2.7 – 6.4 1.9 – 6.3 DN 15 45 PSR-1115
3... PSR-1215 3... R15= G 1/2 N15= 1/2 NPT
7.7 – 13.4 5.9 – 13.0 DN 20 80 PSR-1120 6.. PSR-1220 6.. R20= G3/4
N20= 3/4 NPT
7.4 – 18.2 7.3 – 17.2 DN 25 130 PSR-1125
8... PSR-1225 8... R25= G 1 N25= 1 NPT
19.7 – 36.8 20.0 –
32.4 DN 32 160 PSR-1132
B... PSR-1232 B... R32= G 1 1/4 N32= 1 1/4 NPT
23.1 – 57.9 23.5 –
53.1 DN 40 300 PSR-1140 B PSR-1240
B... R40= G 1 1/2 N40= 1 1/2 NPT
Special switching
ranges1)
Nominal
size
Qmax
L/min
water
Model
Connection Contact Cable version
Rising
flow rate
L/min.
water
Falling
flow
rate
L/min.
water
Material
brass
Material
stainless
steel
4.7 – 6.5 3.4 – 6.1 DN 8 30 PSR-1108 2.. PSR-1208 2.. R08= G 1/4
N08= 1/4 NPT
R= N/O contact
(standard CE)
C= N/O contact
(cCSAus)
U= Changeover
contact
(standard CE)
D= Changeover
contact
(cCSAus)
PVC-cable
1 = 1.5m
(standard)
2 = 2.0m2)
4 = 3.0m2)
6 = 4.0m2)
8 = 5.0m2)
P = PVC cable,
special length3)
S =silicone
cable4) (1.5 m
length)
G =yellow PUR-
cable4) (1.5 m
length)
Y5) = silicone- or
PUR-cable,
special length
5.7 – 7.7 4.5 – 7.6 DN 8 30 PSR-1108 1.. PSR-1208 1..
5.5 – 7.1 4.4 – 6.9 DN 10 40 PSR-1110 2... PSR-1210 2.. R10= G 3/8
N10= 3/8 NPT
6.6 – 8.7 5.6 – 8.5 DN 10 40 PSR-1110 1... PSR-1210 1..
8.3 – 10.7 7.0 – 10.3 DN 15 45 PSR-1115 2... PSR-1215 2.. R15= G 1/2
N15= 1/2 NPT
9.2 – 12.4 8.0 – 11.8 DN 15 45 PSR-1115 1... PSR-1215 1..
17.8 – 24.9 14.9 – 23.3 DN 20 80 PSR-1120 5... PSR-1220 5.. R20= G3/4
N20= 3/4 NPT
20.4 – 30.0 16.3 – 28.3 DN 20 80 PSR-1120 4... PSR-1220 4..
34.6 – 48.3 30.6 – 46.7 DN 20 80 PSR-1120 1... PSR-1220 1..
R25= G 1
N25= 1 NPT
17.7 – 26.8 12.8 – 24.7 DN 25 130 PSR-1125 7... PSR-1225 7..
26.0 – 36.3 21.4 – 34.1 DN 25 130 PSR-1125 5... PSR-1225 5..
29.8 – 42.8 24.7 – 40.9 DN 25 130 PSR-1125 4... PSR-1225 4..
47.6 – 67.2 43.9 – 64.9 DN 25 130 PSR-1125 1... PSR-1225 1..

PSR/PSE
PSR/PSE K17/0618 page 15
Standard switching ranges1
)
for pipes
with
diameter
(mm)
Qmax
m³/h
water
Model
Connection Contact Cable
version
Rising flow
rate L/min.
water
Falling
flow
rate
L/min.
water
Material
brass
Material
stainless
steel
68 - 90 61 - 83 50 30 PSE-1149
8... PSE-1249 8... R15= G 1/2 N15= 1/2 NPT R= N/O contact
(standard CE)
C= N/O contact
(cCSAus)
U= Changeover
contact
(standard CE)
D= Changeover
contact
(cCSAus)
PVC-cable
1 = 1.5m
(standard)
2 = 2.0m2)
4 = 3.0m2)
6 = 4.0m2)
8 = 5.0m2)
P = PVC cable,
special length3)
S = silicone
cable4) (1.5 m
length)
G = yellow
PUR-cable4))
(1.5 m length)
Y5) = silicone-
or PUR-cable,
special length
183 - 250 170 - 233 80 100
320 - 400 300 - 383 100 150
700 - 917 667 - 900 150 200
50 - 62 43 - 58 50 30 PSE-1152
0... PSE-1252 0... R15= G 1/2 N15= 1/2 NPT
155 - 183 143 - 167 80 100
217 - 267 200 - 250 100 150
558 - 600 517 - 592 150 200
92 - 113 70 - 103 100 150
PSE-1114
9... PSE-1214 9... R15= G 1/2 N15= 1/2 NPT
200 - 283 167 - 233 150 200
383 - 533 333 - 467 200 200
1) Listed values are valid only for horizontal installation
2) only for N/O contact “R” and “C”
3) Length as described
4) only for N/O contact “R”
5) cable-material and –length, please specify in clear text
Order Details ATEX- and IECEx-Version (Example: PSR-2108 3 R08 R1)
Standard switch ranges1
)
Nominal
size
Qmax.
L/min.
water
Model*
Connection Contact Cable
version
Rising flow
rate
L/min. water
Falling flow
L/min.
water
Material
brass Material st. steel
2.3 – 4.7 1.6 – 4.6 DN 8 30 PSR-2108
3... PSR-2208 3... R08= G 1/4 N08= 1/4 NPT
R= N/O Contact
(ATEX, IECEx)
U = Changeover
contact
(ATEX, IECEx)
PVC-cable
1 = 1.5m
(standard)
2 = 2.0m2)
4 = 3.0m2)
6 = 4.0m2)
8 = 5.0m2)
P = PVC
cable,
special
length3)
2.8 – 6.0 2.3 – 5.5 DN 10 40 PSR-2110
3.. PSR-2210 3... R10= G 3/8 N10= 3/8 NPT
2.5 – 6.4 1.9 – 6.3 DN 15 45 PSR-2115
3... PSR-2215 3... R15= G 1/2 N15= 1/2 NPT
7.7 – 13.4 5.9 – 13.0 DN 20 80 PSR-2120
6.. PSR-2220 6.. R20= G3/4 N20= 3/4 NPT
7.4 – 18.2 7.3 – 17.2 DN 25 130 PSR-2125
8... PSR-2225 8... R25= G 1 N25= 1 NPT
19.7 – 36.8 20.0 – 32.4 DN 32 160 PSR-2132
B... PSR-2232 B... R32= G 1 1/4 N32= 1 1/4 NPT
23.1 – 57.9 23.5 – 53.1 DN 40 300 PSR-2140
B… PSR-2240 B... R40= G 1 1/2 N40= 1 1/2 NPT

PSR/PSE
page 16 PSR/PSE K17/0618
Special switch ranges 1
)
Nominal
size
Qmax.
L/min.
water
Model
Connection Contact Cable
version
Rising
flow rate
L/min.
Wasser
Falling
flow rate
L/min.
Wasser
Material
Brass Material st. steel
4.7 – 6.5 3.4 – 6.1 DN 8 30 PSR-2108 2.. PSR-2208 2.. R08= G 1/4
N08= 1/4 NPT
R= N/C
Contact
(ATEX,
IECEx)
U= Change-
over
contact
(ATEX,
IECEx)
PVC-cable
1 = 1.5m
(standard)
2 = 2.0m2)
4 = 3.0m2)
6 = 4.0m2)
8 = 5.0m2)
P = PVC
cable,
special
length3)
5.7 – 7.7 4.5 – 7.6 DN 8 30 PSR-2108 1.. PSR-2208 1..
5.5 – 7.1 4.4 – 6.9 DN 10 40 PSR-2110 2... PSR-2210 2.. R10= G 3/8
N10= 3/8 NPT
6.6 – 8.7 5.6 – 8.5 DN 10 40 PSR-2110 1... PSR-2210 1..
8.3 – 10.7 7.0 – 10.3 DN 15 45 PSR-2115 2... PSR-2215 2.. R15= G 1/2
N15= 1/2 NPT
9.2 – 12.4 8.0 – 11.8 DN 15 45 PSR-2115 1... PSR-2215 1..
17.8 – 24.9 14.9 – 23.3 DN 20 80 PSR-2120 5... PSR-2220 5.. R20= G3/4
N20= 3/4 NPT
20.4 – 30.0 16.3 – 28.3 DN 20 80 PSR-2120 4... PSR-2220 4..
34.6 – 48.3 30.6 – 46.7 DN 20 80 PSR-2120 1... PSR-2220 1..
R25= G 1
N25= 1 NPT
17.7 – 26.8 12.8 – 24.7 DN 25 130 PSR-2125 7... PSR-2225 7..
26.0 – 36.3 21.4 – 34.1 DN 25 130 PSR-2125 5... PSR-2225 5..
29.8 – 42.8 24.7 – 40.9 DN 25 130 PSR-2125 4... PSR-2225 4..
47.6 – 67.2 43.9 – 64.9 DN 25 130 PSR-2125 1... PSR-2225 1..
Standard switch ranges1
)
For
pipes
with
diameter
[mm]
Qmax.
m³/h
water
Model
Connection Contact Cable
version
Rising
flow rate
L/min.
water
Falling flow
rate
L/min. water
Material
brass Material st. steel
68 - 90 61 - 83 50 30
PSE-2149
8... PSE-2249 8...
R15= G 1/2
N15= 1/2
NPT R= N/C Contact
(ATEX,
IECEx)
U = Changeover
contact
(ATEX,
IECEx)
PVC-cable
1 = 1.5m
(standard)
2 = 2.0m2)
4 = 3.0m2)
6 = 4.0m2)
8 = 5.0m2)
P = PVC
cable, special
length3)
183 - 250 170 - 233 80 100
320 - 400 300 - 383 100 150
700 - 917 667 - 900 150 200
50 - 62 43 - 58 50 30
PSE-2152
0... PSE-2252 0...
R15= G 1/2
N15= 1/2
NPT
155 - 183 143 - 167 80 100
217 - 267 200 - 250 100 150
558 - 600 517 - 592 150 200
92 - 113 70 - 103 100 150 PSE-2114
9... PSE-2214 9...
R15= G 1/2
N15= 1/2
NPT
200 - 283 167 - 233 150 200
383 - 533 333 - 467 200 200
1) Listed values are valid only for horizontal installation
2) only for N/C contact “R” and “C”
3) Length as described

PSR/PSE
PSR/PSE K17/0618 page 17
13. Recommended Spare Parts
1.) Paddle (only PSR-…)
2.1) Spare Normally open contact
2.2) Spare Changeover contact
2.3) Conversion kit: N/O for Changeover contact (only PSR-11...)
consisting of top (sleeve) brass + 1 Changeover contact
2.4) Conversion kit: N/O for Changeover contact (only PSR-12...)
consisting of top (sleeve) stainless steel + 1 Changeover contact
3.1) FPM O-Rings
3.2) NBR O-Rings
14. Dimensions
model: PSE-xx49 PSE-xx52
PSE-xx14 model: PSR
model D1 L2
(mm)
PSE-..498R R 1/2 49
PSE-..520R R 1/2 52
PSE-..149R R 1/2 114
PSE-..498N 1/2
NPT 60
PSE-..520N 1/2
NPT 58
PSE-..149N 1/2
NPT 116
model D1 L
(mm) L1 (mm) L2 (mm) SW 1
PSR-..08 G 1/4 50 10 80 27
PSR-..10 G 3/8 50 10 80 27
PSR-..15 G 1/2 50 10 80 27
PSR-..20 G 3/4 50 10 81.5 32
PSR-..25 G 1 50 10 84 39
PSR-..32 G 1 1/4 50 10 112 46
PSR-..40 G 1 1/2 50 10 119 55
SW 30
SW 1
L2
D1
L
L1
SW 27
D1
12
* für NPT-Gewinde
D1
44
12 (20*)
49
88
L2
14 (19*)
SW 27
* for NPT-thread

PSR/PSE
page 18 PSR/PSE K17/0618
15. EU Declaration of Conformance
We, Kobold-Messring GmbH, Hofheim-Ts, Germany, declare under our sole
responsibility that the product:
Paddle Flow Switch Model: PSR-x / PSE-x
to which this declaration relates is in conformity with the standards noted below:
EN 61010-1:2010
Safety requirements for electrical equipment for measurement, control and
laboratory use.
EN 60529:2013
Protection through housing (IP-code) for PSR/PSE-2x
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)
for PS*-2* *** *** **
2014/34/EU
Equipment and Protective systems intended for use in potentially Explosive
Atmospheres (ATEX 100a)
Quality Management Production
Certificate number: BVS 15 ATEX ZQS / E 110
Notified body: DEKRA EXAM
ID: 0158
Marking:
I M1 Ex ia I Ma and/ or
II 1G Ex ia IIC T4/T3 Ga and/ or
II 1D Ex ia IIIC T110 °C / T150 °C Da
EN 60079-0:2009 Explosive atmospheres - Part 0: Equipment - General
requirements
EN 60079-11:2007 Explosive atmospheres - Part 11: Equipment protection
by intrinsic safety "i"
EN 50303:2000 Group 1, category M1 equipment intended to remain
functional in atmospheres endangered by firedamp and/or coal dust

PSR/PSE
PSR/PSE K17/0618 page 19
EN 60079-26:2007 Explosive atmospheres - Part 26: Equipment with
Equipment Protection Level (EPL) Ga
EN 61241-0:2006 Electrical apparatus for use in the presence of
combustible dust - Part 0: General requirements
EN 61241-11:2006 Electrical apparatus for use in the presence of
combustible dust - Part 11: Protection by intrinsic safety "iD"
Also conforms to the following European and National Standards and technical
provisions in the version:
Technical rules for hazardous substances (TRGS) 727:2016, Avoidance of
ignition hazards as consequence of electrostatic charging
One or more of the standards and technical provisions references in the
certificate have been replaced by new editions. KOBOLD declares in their sole
responsibility and testing, that the changed requirements are either not applicable
or the products listed above comply with them and are in compliance with the
following standards and technical provisions:
EN 60079-0:2012 + A11:2013 Explosive atmospheres – Part 0: Equipment
- General Requirements
EN 60079-11:2012 Explosive atmospheres – Part 11: Equipment
protection by intrinsic safety “i
The equipment complies with the model, which has obtained an “EC” type
certificate; number BVS 09 ATEX E 102 issued by the notified body 0158 DEKRA
EXAM, Bochum, Germany.
for PSR-1232B and PSR-1240B
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

PSR/PSE
page 20 PSR/PSE K17/0618
16. Examination Certificate