Kobold PSR series User manual

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

PSR/PSE
page 2 PSR/PSE K23/0322
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.Preamble ............................................................................................. 5
6.2.General information on explosion protection ........................................ 5
6.3.Commissioning, installation, operation ................................................ 8
6.4.Maintenance, servicing ........................................................................ 9
6.5.Troubleshooting ................................................................................. 10
6.6.Disposal ............................................................................................. 11
6.7.Identification of the flow monitor (nameplate) .................................... 11
7.Mechanical Connection ............................................................................... 12
8.Electrical Connection .................................................................................. 13
9.Limit Switches ............................................................................................. 13
10.Maintenance ............................................................................................... 15
11.Technical Information .................................................................................. 16
11.1.General .............................................................................................. 16
12.Order Codes ............................................................................................... 18
13.Recommended Spare Parts ........................................................................ 21
14.Dimensions ................................................................................................. 21
15.EU Declaration of Conformance ................................................................. 22
16.EU Declaration of Conformance ATEX ....................................................... 24
17.ATEX Certificate .......................................................................................... 26
18.IECEx Certificate ......................................................................................... 31
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 K23/0322 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 instruction manuals on our website www.kobold.com are always for currently
manufactured version of our products. Due to technical changes, the instruction
manuals available online may not always correspond to the product version you
have purchased. If you need an instruction manual that corresponds to the
purchased product version, you can request it from us free of charge by email
([email protected]) in PDF format, specifying the relevant invoice number and
serial number. If you wish, the operating instructions can also be sent to you by
post in paper form against an applicable postage fee.
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 2006/42/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"
)
A
rt. 4,
§
3
A
rt. 4,
§
3
PSR-132B and PSR-140B not deliverable
A
rt. 4,
§
3
PSR-232B and PSR-240B Cat. II
A
rt. 4,
§
3

PSR/PSE
page 4 PSR/PSE K23/0322
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-..
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 K23/0322 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. Preamble
This excerpt from the operating instructions only represents the ex-relevant
aspects. It is adopted in the same or analogous form in the original operating
instructions; Textual changes are permitted; the ex-relevant statements remain.
To ensure functionality and for your own safety, please read the enclosed
operating instructions carefully before starting the installation. If you have any
questions, please contact KOBOLD Messring GmbH, Hofheim. It applies with the
original operating instructions.
When evaluating the product, the following standard issues were taken into
account:
a) IEC 60079-0:2017 Ed. 7.0 / EN IEC 60079-0:2018 Explosive atmospheres –
Part 0: General Requirements
b) IEC 60079-11:2011 Ed. 6 + Cor.:2012 / EN 60079-11:2012 Explosive
atmospheres – Part 11: Equipment protection by intrinsic safety “i”
c) EN 50303:2000 Group 1, category M1 equipment intended to remain
functional in atmospheres endangered by firedamp and/or coal dust
6.2. General information on explosion protection
The KOBOLD flow monitors types PSR and PSE are used wherever reliable flow
monitoring is required.
Depending on the flow velocity or flow rate, the baffle plate is deflected and
moves the permanent magnet via the balance beam into the response area of the
reed contact located outside the flow medium.

PSR/PSE
page 6 PSR/PSE K23/0322
Due to the force of the leaf spring, which also serves as a holder for the balance
beam, the baffle plate is returned to its rest position if the flow fails. The KOBOLD
baffle plate flow monitors are supplied complete with a pipe section up to a
nominal size of 40. For larger pipe sizes, the devices are supplied without a pipe
section for direct installation and are screwed into commercially available T-
pieces or reducers. The seal is made with PTFE tape.
The flow monitor is intended for commercial systems and may only be used in
accordance with the information in the technical documentation and the
information on the nameplate. It is operated exclusively together with certified
products via an intrinsically safe circuit. They correspond to the applicable
standards and regulations.
The installation regulations (e.g. EN 60079-14) for systems in potentially
explosive areas must be observed.
Permitted use
 The intrinsically safe flow monitor can be used as follows, taking the certified
parameters into account:
• In Zone 0 (Gas-Ex, Cat. 1G) in explosion groups IIA, IIB and IIC
• In Zone 20 (Dust-Ex, Cat. 1D) in explosion groups IIIA, IIIB and IIIC
• In Zone 1 (Gas-Ex, Cat. 2G) in explosion groups IIA, IIB and IIC
• In Zone 21 (Dust-Ex, Cat. 2D) in explosion groups IIIA, IIIB and IIIC
• In Zone 2 (Gas-Ex, Cat. 3G) in explosion groups IIA, IIB and IIC
• In Zone 22 (Dust-Ex, Cat. 3D) in explosion groups IIIA, IIIB and IIIC
 The qualification with regard to the surface temperature is T4 / T3; for all gases,
vapors, mists and dusts with an ignition temperature ≥ 110 ° C / ≥ 150 ° C, the
products are not an ignition source.
 The permissible ambient temperature range extends from -20 ° C ≤ Ta ≤ 70 ° C
in the standard version; up to 110 ° C for the high temperature version.
6.2.1. Electrical parameters when used in all zones, except for zone 20
• Ui = 60 V AC/DC
• Ii = 2 A
• Pi = 40 W / 20 VA
• Li = negligible
• Ci = negligible
• Ambient temperature range of the standard version PSx-21:
-20 °C ≤ Ta ≤ 70 °C → T4 / T110 °C
• Ambient temperature range of the high temperature version PSx-22:
-20 °C ≤ Ta ≤ 110 °C → T3 / 150 °C

PSR/PSE
PSR/PSE K23/0322 page 7
6.2.2. Electrical parameters when used in Zone 20
• Ui = 30 V AC/DC
• Ii = 0.25 A
• Pi = 650 mW @ Ta 70 °C, 500 mW @ Ta 110 °C
• Li = negligible
• Ci = negligible
• Ambient temperature range of the standard version: -20 °C ≤ Ta ≤ 70 °C →
T4 / T135 °C
• Ambient temperature range of the high temperature version: -20 °C ≤ Ta ≤
110 °C → T4 / T135 °C
6.2.3. General requirements
6.2.4.1 Intended Use
d) To ensure safe operation, the products may only be used in accordance with
the information in the assembly instructions. When using the device, the legal
and safety regulations required for the respective application must also be
observed. This also applies analogously to the use of accessories.
e) If the instructions given in this excerpt are not observed or if the product is
improperly handled, our liability is void. In addition, the warranty does not apply
to products and spare parts.
f) The products are not safety elements in the sense of their intended use.
g) Only original parts from the manufacturer may be used.
h) Flammable media within the flow monitor must not be heated to above 80% of
their ignition temperature in zone 0 or 1 without taking special measures.
6.2.4.2 General safety information
The flow monitor corresponds to the state of the art and is operationally safe. The
flow monitor can pose a residual risk if it is used and operated improperly by
untrained personnel. Every person who is entrusted with the installation,
commissioning, maintenance or repair of the flow monitor must have read and
understood the assembly instructions and in particular the safety instructions.
a) When selecting a product and using it as intended, follow the general rules of
technology.
b) All connected electrical and mechanical equipment must be suitable for the
respective application.
c) Observe the information in these operating instructions as well as the
conditions of use and permissible data that appear on the imprints /
nameplates of the respective products.
d) It must be ensured that only the product types of protection that correspond to
the zones are installed!
e) The product is only approved for appropriate and intended use in a normal
industrial atmosphere. Immersion in liquids is not permitted.
f) It must be ensured that no falling objects can hit the product. If there is a risk of
impact sparks, external housing parts made of light metal must be installed in a
protected manner.
g) The operator must ensure lightning protection for the entire system in
accordance with local regulations.

PSR/PSE
page 8 PSR/PSE K23/0322
h) It is the responsibility of the installer to ensure that the flow monitor functions
properly in conjunction with the individual evaluation devices and that it is
approved for the intended purpose.
i) The intrinsically safe connection must be made using approved / tested
evaluation devices, which may have to be equipped with suitable Zener
barriers or switching amplifiers.
6.3. Commissioning, installation, operation
Depending on the IP degree of protection, the time for cleaning the equipment
(dust deposits) must be specified. Other important facts:
a) The product may only be put into operation in intrinsically safe circuits in the
zones defined in Section 2 in Section "Permitted Use" by specialists with a
qualification similar to a qualified person in accordance with TRBS 1203.
b) The products may only be used in a normal industrial atmosphere. If
aggressive substances are present in the air, the manufacturer should always
be consulted. The products must be appropriately protected in adverse
environmental conditions.
c) The operation of the product is only permitted in the completely assembled
and undamaged housing. In the event of possible damage, the operator may
have to consider the spread of zones; In addition, operation is not permitted if
the housing is damaged.
d) The ambient conditions specified in the operating instructions must be
strictly adhered to and appropriately protected against adverse ambient
conditions.
e) The mechanical flow monitor may only be operated when it is completely
filled. Exceptions according to the operator's risk assessment are only
permitted for start-up and shutdown.
f) Thermal radiation from third-party products / components must be taken
into account.
g) The flow monitor must be protected against inadmissible ingress of liquids
and / or contamination.
h) The contact must be protected against UV light.
i) Stuck parts (e.g. due to frost or corrosion) must not be loosened with force
in the presence of an explosive atmosphere. Icing must therefore be
avoided.
j) The flow monitor may only be exposed to low vibrations, see also IEC 34-
14.
k) A direct electrostatic discharge of high energy onto the equipment is not
permitted (usually cannot be generated by human contact). To ensure that
electrostatic charges are discharged, the national requirements must be
taken into account.
l) In particular, isolated capacities must be prevented.
m) All construction parts must be connected to one another using metal.
n) In zones 20, 21 and 0, the connection cables must be protected against
electrostatic charges.
o) Equalizing currents must not be routed through the metallic structures.
p) Only Zener barriers or switching amplifiers whose output circuits are
approved / tested for use in an explosive atmosphere may be used. In
Europe, use in Zone 1 requires an EC type-examination certificate for the

PSR/PSE
PSR/PSE K23/0322 page 9
equipment in question, which is issued by a body designated for explosion
protection.
a) The voltage of the supply units must be less than or equal to the voltage Ui
of the flow monitor.
b) The total current Io of the supply devices must be less than or equal to the
current Ii of the flow monitor.
c) The ignition limit curves from EN 60079-11 must be taken into account in
Zone 2 without a safety factor and must be observed during installation. In
Zone 1, the safety factor 1.5 must be used. A control drawing (system
description) to be created by the installer / operator is required for the
installation of the intrinsically safe circuit.
d) Equipotential bonding must be established along the intrinsically safe
circuit if the power is supplied via an earthed source.
q) The certificates must be taken into account, including the special conditions
stipulated therein.
r) Within the potentially explosive area, assembly may only be carried out in
accordance with the locally applicable installation regulations. The following
conditions must be observed (incomplete):
a) Installation and maintenance may only be carried out in an explosion-free
atmosphere and in compliance with the regulations applicable in the
country of the operator.
b) Additional precautions must be taken if the presence of hydrogen sulfide,
ethylene oxide and / or carbon monoxide is to be expected: These
substances have a very low ignition energy!
c) If these substances are present and if a substance of explosion group IIC
is present and an explosive atmosphere is likely to be present, only non-
sparking tools may be used!
d) The flow monitors must not be used in systems with cathodic corrosion
protection; in borderline cases, consult the manufacturer.
a) Particular care must be taken to ensure that no stray currents (e.g.
generated by motors that are operated on frequency converters,
welding systems and / or cathodic corrosion protection systems) are
passed through the flow monitor.
6.4. Maintenance, servicing
Definition of terms according to IEC 60079-17:
Maintenance and repair: A combination of all activities that are carried out to
keep an object in a condition or to bring it back into a condition that meets the
requirements of the relevant specification and ensures the execution of the
required functions.
Inspection: An activity that involves the careful examination of an object with the
aim of making a reliable statement about the condition of this object, without
dismantling or, if necessary, with partial dismantling, supplemented by measures
such as B. measurements is carried out.

PSR/PSE
page 10 PSR/PSE K23/0322
Visual inspection: A visual inspection is an inspection in which visible defects
are found without the use of access devices or tools, for example missing screws.
Close-up inspection: An inspection that, in addition to the aspects of the visual
inspection, identifies defects such as loose screws that can only be removed
through the use of access devices, e.g. B. Steps (if necessary), and tools can be
identified. For close-up tests, a housing does not usually need to be opened or
the equipment needs to be de-energized.
Detailed inspection: An inspection in which, in addition to the aspects of close-
up inspection, defects such as loose connections, which can only be identified by
opening housings and / or, if necessary, using tools and testing equipment, are
identified.
a) Maintenance measures may only be carried out by qualified persons.
b) Only those accessories may be used in potentially explosive areas that
meet all the requirements of the European directives and national
legislation.
c) Maintenance measures with dismantling of the flow monitor may only be
carried out in an explosion-free atmosphere.
d) Components may only be replaced with original spare parts that are also
approved for use in Ex areas. Repairs only by the manufacturer or specialist
workshop.
e) The products must be regularly serviced and cleaned in the Ex area. The
intervals are determined by the operator in accordance with the
environmental stresses on site.
6.5. Troubleshooting
No changes may be made to products that are operated in connection with
potentially explosive areas. Repairs to the product may only be carried out by
specially trained and authorized specialists.
Activity
Visual
inspection
monthly
Close-up
inspection
every 6 months
Detailed
examination
every 12
months
1
Visual inspection of the flow
monitor for damage and
remove dust deposits
●
2 Check for inte
g
rit
y
and function ●
3 Examination of the entire
s
y
stem In the operator's area of responsibility

PSR/PSE
PSR/PSE K23/0322 page 11
6.6. Disposal
The packaging and used parts must be disposed of in accordance with the
regulations of the country in which the product is installed.
6.7. Identification of the flow monitor (nameplate)
6.7.1. Marking for the standard version
6.7.2. Marking for the high temperature version

PSR/PSE
page 12 PSR/PSE K23/0322
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 K23/0322 page 13
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 14 PSR/PSE K23/0322
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 K23/0322 page 15
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
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 16 PSR/PSE K23/0322
11. Technical Information
11.1. General
Tolerance of switching points: ±15 %
Medium temperature: -20 … +70°C (NBR seal)
-10 … +110°C (FPM seal)
Ambient temperature: -20 … +70°C (NBR seal)
-20 … +110°C (FPM seal)
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
R N/O / N/C contact Standard
max. 2 A, max. 230 VAC/DC, max. 40 W, 40 VA
U Changeover contact Standard
max. 0.5 A, max. 150 VAC/DC, max. 20 W, 20 VA
C N/O / N/C contact
2 A, 20 VAC, 0.18 A, 230 VAC, max. 40 W
D Changeover 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:
Model PS*-**** * *** * * H or Model PS*-**** * *** * *
I M1Ex ia I Ma Ex ia I Ma
II 1GEx ia IIC T3 Ga Ex ia IIC T4 Ga
II 1DEx ia IIIC T135°C Da Ex ia IIIC T135°C Da
II 2DEx ia IIIC T150°C Db Ex ia IIIC T110°C Db
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 K23/0322 page 17
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)

PSR/PSE
page 18 PSR/PSE K23/0322
12. Order Codes
Standard version (Example: PSR-1108 3 R08 R 1)
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
22-38.6 21-36 DN 32 160 PSR-1132
B...
PSR-1232
B...
R32= G 1 1/4
N32= 1 1/4 NPT
34.8-64.2 34-62.3 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 K23/0322 page 19
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-2208 3 R08 R H)
Standard switch ranges1)
Nominal
size
Qmax.
L/min.
water
Model*
Connection Contact Cable version Special 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 = Change-
over
contact
(ATEX,
IECEx)
PVC-cable
1 = 1.5m
(standard)
P = PVC cable,
special
length3)
without = standard
(not for
PSx-22…)
H = temperature of
medium
+110 °C (only
for PSx-22…),
marking acc.
to certificate
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 20 PSR/PSE K23/0322
Special switch ranges 1)
Nominal
size
Qmax.
L/min.
water
Model
Connection Contact Cable
version Special 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)
P = PVC
cable,
special
length3)
without = standard
(not for
PSx-22…)
H = temperature of
medium
+110 °C (only
for PSx-22…),
marking acc.
to certificate
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 Special 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)
P = PVC
cable,
special
length3)
without = standard
(not for
PSx-22…)
H = temperature of
medium
+110 °C (only
for PSx-22…),
marking acc.
to certificate
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