flow meter 4l flow meter 4n / 4t flow meter 4a mini ow meter 4m flow meter...

4Flow meter 4LSeries 4L Flow meter with fine control valve for standard ranges. With versatile rear connec-tion types especially for panel mounting or wall mounting. Individual measuring ranges ormeasurement acquisition possible. Please ask.

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Flow meter 4N / 4T

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Flow meter 4AFlow meter 4A for individual measuring ranges. Versatile connection options – at the backand on the side. With fine control valve. Measurement acquisition possible.

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Mini flow meter 4MEspecially for smallest flowrates in the laboratory sector.

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Flow meter 4REspecially for inline installation with integrated connectors for flexible tube.

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Control unit 4FThe Control unit sets and regulates constant flow rates. It comprise a digital three-levelcontroller with microprocessor, a flowmeter with light barrier and a fine control valve with anelectrical actuator.

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Type Installation

Meas. tube

Size mm Flow range air Flow range water

Connection Material As standard with valve

Measurement transmission

Glass change

4L100… W/P St 10 × 75 440 l/h10100 l/h

rear PP, PVDF, PFA • on request

4L200… W/P St 17 × 75 40400 l/h1501,600 l/h

2.525 l/h440 l/h

10100 l/h


4L500… W/P St 28 × 150 2502,500 l/h6006,000 l/h

25250 l/h60600 l/h


4N100T... S St 20200 l/h50600 l/h

1001,300 l/h20350 l/h

rear PP no —

4A100… W Sp 10 × 150 state the flow rate you require

state the flow rate you require

rear PVDF, PTFE • Option:– ann. prox.

sw.– photoelectric

sensor

in installed state4A110… W Sp 10 × 150 side PVDF, PTFE •

4A200… W Sp 17 × 150 rear PVDF, PTFE •

4A210… W Sp 17 × 150 side PVDF, PTFE •

4M100… P St 8 × 65 0.22 l/min — rear PP, PVDF • —

4R100… I St 10 × 75 440 l/h10100 l/h

— top/bottom PP, PVDF, PFA • —

4R200… I St 17 × 75 40400 l/h1501,600 l/h

2.525 l/h440 l/h

10100 l/h

top/bottom PP, PVDF, PFA • —

4T100T... R St 20200 l/h50600 l/h

1001,300 l/h20350 l/h

top/bottom PP no

W = wall mounting P = panel mounting I = inline installation

St = standard measuring tube Sp = special measuring tube

4 Getting Started: Flow Meters


The emtechnik flow meters are based on the float principle. The flow measurement is given by the relationship between the forces acting on the float and the flow velocity of the medium measured inside the measuring tube. At a constant flow velocity the float stabilises at a specific height inside the conical measuring cylinder. In this position the forces acting on the float are in equilibrium. This means that the weight (G) of the float is lifted by the buoyancy force (A), the amount of medium displaced by the float and the flow force produced (K) by the flow.

G=A+K

If the flow velocity changes, for instance due to a pressure change, the float rises or falls in the measuring cylin-der to a larger or smaller equilibrium corresponding to the changed flow force. The position of the float corre-sponds to a specific volumetric flow and can be read on the scale on the measuring tube as a flow rate.

Measuring tube made of Duran® glass

Float

Float principle

4 The Principle


Measuring tube and float

The measuring tubes used are made of Duran® glass and comply with precision class 2.5 in accordance with VDI/VDE 3513. Duran® glass has a high corrosion resistance for almost all measured media with the exception of hot concentrated alkalis or hydrofluoric acid. The high boron trioxide content provides high resist-ance to temperature fluctuations. The linear coefficient of expansion is only 3.2 x 10–6 m/1°C. Depending on the diameter of the measuring tube and the task, floats made of PTFE or PVDF with a soft iron core or magnet are preferably used. This has the advantage that the measurements can be read and transmitted. If the operating conditions make it necessary, it is also possible to use other mate-rials, e.g., glass, stainless steel, Mu metal.

Special measuring tube – for your measuring range

There are applications in which a standard product cannot be used as the meas-uring tube. In these cases we will be pleased to supply flow meters with special measuring tubes manufactured especially to suit your require ments and to your specification. There are appropriately calibrated by our specialists. For these in-dividually manufactured parts, we require detailed information on the media, pressure, temperature, measuring range, density and viscosity (see Inquiry Form).Send us your specifications. Based on this information, our specialists will as-semble the optimal flow meter for your requirements and send you a no obliga-tion quotation.

The regulation valve

emtechnik flow meters are supplied as standard with a precision metering valve (except 4M, 4N, 4T). The flow rate characteristic of the valve is chosen to suit the respective flow rate. If required, a design without a valve is also possible.

Materials

Depending on the type, the flow meters are available in PP, PVDF, PTFE or PFA. You will find detailed information on the related product pages. The O-rings used as standard are made of FPM and can also be replaced by EPDM or FFKM for special designs. You will find a detailed description of the material properties un-der Technical Information.

Precision class in accordance with VDI/VDE 3513

Measuring tube Ø x length Class % of full scale value min/max10 x 75 4 1.3 - 4

10 x 150 2.5 0.8 - 2.5 13 x 115 6 2 - 617 x 75 4 1.3 - 4

17 x 150 2.5 0.8 - 2.5 28 x 150 2.5 0.8 - 2.5

Measuring tube und float

Regulation valve

4 The Advantages of Series 4 Products


Depending on the diameter of the measuring tube, it is possible to use 3 different methods of measurement acquisition:

— Inductive limit switch (annular proximity switch) — Magnetic switch (reed switch) — Photoelectric sensor

Measuring tube ØMeasurement acquisition 10 17 28

Inductive limit switch x x

Magnetic switch x

Photoelectric sensor x x

Inductive limit switch (annular proximity switch)

Inductive limit switch (annular proximity switch)

The inductive limit switch is the most frequently used form of measurement ac-quisition. It can only be used, if the float has ferromagnetic properties, for 10 and 17 mm diameter measuring tubes.

Principle of operation:The annular proximity switch signals that the specific flow rate has been exceed-ed or has dropped below a specific flow rate. It behaves like a switch that opens when the float moves from bottom to top and closes in the opposite direction. The open or closed annular proximity switch remains in its position due to its bistabile behaviour, even if the float moves a long way from the switch. As the ”OPEN” switch position must correspond to the alarm position, the annular prox-imity switch with connection cable outlet facing downwards must be used as a max. switch, and with cable outlet facing upwards as a min. switch. The circuit necessary for operation in accordance with DIN 19234 (NAMUR) is taken from a monostable relay (relay WE 77/ Ex-1). On connection to an intrinsically safe cir-cuit the annular proximity switch is also ex safe.

Technical data: Self-capacitance: 190 nF Self-inductance: 20 mH Voltage: 4.5 – 13 V DC Current consumption: >>0<< < 1 mA;

>>1<< > 2.2 mA Temperature: -20°C to +70°C Weight: 40 g IP-rating: IP 67 Connection: 2m : 2 x 0.14 mm² Ex class: E Ex ia II CT 6

Article number:4S7759KU1 = Ø 10 mm 4S7759KU2 = Ø 17 mm

4 Measurement Acquisition


Magnetic switch (reed switch)

Photoelectric sensor

Magnetic switch (reed switch)

The float must have a magnetic core to be able to use a magnetic switch (ex-proof). Can be used on measuring tube diameters from 28 mm

Principle of operation:The magnetic switch comprises a reed switch that is preloaded by a permanent magnet and is of a bistable design. The float with magnet opens the reed switch when it enters the alarm range and closes it again on leaving the alarm range. The switch position is retained even if the float moves a long way from the switch.

Photoelectric sensor

Using a photoelectric sensor it is possible, independent of the material used for the float (provided it is not transparent for infrared), to read the flow rate. Can be used for 10 and 17 mm measuring tube diameters.

Principle of operation:The bistable sensor contains a double photoelectric switch. It is fitted to the measuring tube such that the arrow points upwards. The power supply and the output signal are connected using the 3-pin plug. If the float moves up through the switching point, the output changes its state to high and remains in this state until the float moves down through the switching point. The output then switches to low. After the device is switched on the float must pass through the sensor once to detect its starting position.

Article number: 4S7759KU6 = max. contact 4S7759KU7 = min. contact

Technical data:Voltage: 10 – 30 V DCSwitching current: 150 mAIP-rating: IP 65Temperature: 0°C to +60°CConnection: Plug M8

Article number:4S7759KU18

4 Measurement Acquisition – Reed switch,Photoelectric sensor

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Isolating amplifier with relay output

Isolating amplifier with relay output

The isolating amplifier is a single- channel, self-monitoring amplifier that must be used for the operation of an annular proximity switch in an intrinsically safe cir-cuit.Can be used for annular proximity switch (Ø 10 + Ø 17) and reed switch.

Principle of operation:By connecting the annular proximity switch or the reed switch to the isolating amplifier an intrinsically safe circuit in accordance with DIN 19234 NAMUR is es-tablished. The state is indicated using an LED, the output is provided by a changeover contact.

Technical data:Voltage: 230 VACPower consumption: 3.5 VAOpen circuit voltage: 8 VDCShort circuit current: 8 mAIP-rating: IP 20Mounting: DIN 50 022Ex class: E Ex ia IIB/IIC

Article number:4S7759KU12

4 Measurement Acquisition – Isolating Amplifier


4 Flow meters 4L – versatile partners for standardmeasuring ranges

1. Housing made of PP, PVDF and PFA⇒Very high media resistance

2. Easy to dismantle⇒Straightforward glass change⇒Simple to clean

3. Measuring tube made of Duran© glass⇒high corrosion resistance

4. All sealing surfaces and threads are seam-less

5. Precision metering valve as standard⇒also very small measuring ranges can be regulated

The Series 4L flow meters are particularly suitable for installation in switch panels and for wall mounting due to their design. Allsealing surfaces and threads are seam-less. The standard measuring tubes available make them suitable for many measuringranges. For the improved safety of the user against glass breakage, protective tubes made of PMMA are also used.

On request we can offer flow meters which are individually manufactured to customer-specific requirements and with measurementacquisition (annular proximity switches, photoelectric switches or reed switches). Information on media, measuring range,pressure, temperature, viscosity and density define the design of the special measuring tube.


4 Flow meter (Series 4L), with rear female G-threadand valve

Article-Nr Connection Flow rate Medium Material

4L100G140318PFFK G1/8" 4-40l/h Air PFA/FFKM

4L100G140318PFFP G1/8" 4-40l/h Air PFA/FPM

4L100G140318PPFP G1/8" 4-40l/h Air PP/FPM

4L100G140318PVEP G1/8" 4-40l/h Air PVDF/EPDM

4L100G140318PVFP G1/8" 4-40l/h Air PVDF/FPM



4L100G150318PPEP G1/8" 10-100l/h Air PP/EPDM



4L100G150318PVFK G1/8" 10-100l/h Air PVDF/FFKM


4L200G170414PFFP G1/4" 2,5-25l/h H2O PFA/FPM

4L200G170414PPFP G1/4" 2,5-25l/h H2O PP/FPM

4L200G170414PVFP G1/4" 2,5-25l/h H2O PVDF/FPM

4L200G180414PPEP G1/4" 4-40l/h H2O PP/EPDM

4L200G180414PPFP G1/4" 4-40l/h H2O PP/FPM

4L200G180414PVFP G1/4" 4-40l/h H2O PVDF/FPM




4L200G270414PPEP G1/4" 160-1600l/h Air PP/EPDM













4L500G270612PFFP G1/2" 60-600l/h H2O PFA/FPM




4 Flow meter (Series 4L), with rear female G-threadand valve

Dimensions 4L100G. . ., 4L100N. . ., 4L200G. . ., 4L200N. . ., 4L500G. . ., 4L500N. . .

G / NPT L L1 L2 L3 L4 L5 L6 L7 B B1 B2 h d d1

4L100G. . ., 4L100N. . . 1/8" 100 5 ~70 26 80 7 30 40 20 35 27 10 Ø 14 Ø 1.5

4L200G. . ., 4L200N. . . 1/4" 110 5 ~85 33 85 8 35 40 25 35 28 12.5 Ø 18.5 Ø 4.5

4L500G. . ., 4L500N. . . 1/2" 212 5 ~133.5 43 170 10 58.5 95 42 42 33 21 Ø 26.5 Ø 5.5

Materials Series 4L. . .

4L1. . . – 4L2. . . 4L5. . .

Housing PP, PVDF, PFA PP, PVDF, PFA

Spindle PCTFE PTFE

O-ring* FPM FPM

Measuring tube DURAN© glass DURAN© glass

Float air glass PP

Float water stainless steel stainless steel

Protective tube/shield PMMA PMMA

* EPDM, FFKM on request

Technical data 4L. . ., 4R. . .Pressure stage PN 3


4 Flow meter (Series 4L), with rear femaleNPT-thread and valve


4L100N140318PFFP NPT1/8" 4-40l/h Air PFA/FPM

4L100N140318PVFP NPT1/8" 4-40l/h Air PVDF/FPM

4L100N150318PFFP NPT1/8" 10-100l/h Air PFA/FPM

4L100N150318PPFP NPT1/8" 10-100l/h Air PP/FPM

4L100N150318PVEP NPT1/8" 10-100l/h Air PVDF/EPDM


4L200N170414PFFP NPT1/4" 2,5-25l/h H2O PFA/FPM

4L200N170414PVFP NPT1/4" 2,5-25l/h H2O PVDF/FPM

4L200N180414PFFP NPT1/4" 4-40l/h H2O PFA/FPM

4L200N180414PVFP NPT1/4" 4-40l/h H2O PVDF/FPM






4L500N270612PPFP NPT1/2" 60-600l/h H2O PP/FPM


Dimensions 4L100G. . ., 4L100N. . ., 4L200G. . ., 4L200N. . ., 4L500G. . ., 4L500N. . .

G / NPT L L1 L2 L3 L4 L5 L6 L7 B B1 B2 h d d1

4L100G. . ., 4L100N. . . 1/8" 100 5 ~70 26 80 7 30 40 20 35 27 10 Ø 14 Ø 1.5

4L200G. . ., 4L200N. . . 1/4" 110 5 ~85 33 85 8 35 40 25 35 28 12.5 Ø 18.5 Ø 4.5

4L500G. . ., 4L500N. . . 1/2" 212 5 ~133.5 43 170 10 58.5 95 42 42 33 21 Ø 26.5 Ø 5.5

Materials Series 4L. . .

4L1. . . – 4L2. . . 4L5. . .

Housing PP, PVDF, PFA PP, PVDF, PFA

Spindle PCTFE PTFE

O-ring* FPM FPM

Measuring tube DURAN© glass DURAN© glass

Float air glass PP

Float water stainless steel stainless steel

Protective tube/shield PMMA PMMA




4 Flow Meters 4N/4T – economical flow meters forair

1. Economical flow meter for air

2. Integrated flexible tube connectors made of PP or natural PP

3. With FDA approval

4. Compact design

5. For panel mounting or inline installation

The perfect solution for inline installation or panel mounting.

To measure air flow easily and precisely, emtechnik has added new, compact and low-priced flow meters of series 4N and 4T to itsmodular product range. Both flow meters are available with flow ranges from 20-200 l/h to 100-1300l/h depending on requirements.With integrated DN04/06 flexible tube connectors in PP or natural PP, the flow meters can be quickly and reliably connected to theflexible tube.

Series 4N flow meters are equipped with connections on the back and are designed for easy panel mounting. Series 4T flowmeters were designed with connections on the top and bottom for compact inline installation. Both versions have FDA approval andare also available with a regulation valve for precise control of the flow of medium.


4 Flow meter series 4N, with rear connection forflexible tube without valve


4N100T0340PPFP10 DN04/06 100-1300l/h Air PP/FPM




Dimensions 4N100T. . .10

DN ~L L1 ~L3 ~L4 B SW

04/06 148 5 39 128 20 14

Technical data 4N. . ., 4T. . .

Pressure stage PN 10

Media temperature +5°C to +60°C


4 Flow meter (Series 4T) for inline installation, withconnection for flexible tube (Series 1A), withoutvalve


4T100T0340PPFP10 DN04/06 100-1300l/h Air PP/FPM




Dimensions 4T100T. . .10

DN ~L ~L1 ~L2 SW

04/06 159 17 17 17

Technical data 4N. . ., 4T. . .

Pressure stage PN 10

Media temperature +5°C to +60°C


4 Flow Meter 4A – special partner for individualflow ranges

1. Glass change possible when installed >To the side⇒To the top

2. Housing made of PVDF and PTFE⇒Very high media resistance

3. Measurement acquisition on request⇒Annular proximity switch⇒Photoelectric sensor

4. Float made of various materials with soft iron core or magnet⇒Different forms of measurement acquisition possible

5. Versatile connection options, side or rear⇒Variable applications

The Series 4A flow meters provide versatile connection options – at the back and on the side. Only special measuring tubes areused; these are individually manufactured to customer specification. Due to their design, series 4A flow meters are particularlysuitable for panel mounting and wall mounting. The glass tube can be changed without problems after installation. Formeasurement acquisition the devices can be supplied with annular proximity switches or photoelectric switches on request.


4 Flowmeter (Series 4A) with rear female G-threadand valve


4A100GXXXPT G1/4" ? ? PTFE

4A100GXXXPV G1/4" ? ? PVDF

Dimensions 4A100G. . ., 4A101G. . ., 4A103G. . .

G DN L L1 L2 L3 L4 L6 L7 B1 B2 h d1

G 1/4" - 212 10 ~125 33 175 61 90 30 18 21 Ø 5.5

Materials Series 4A. . .

Housing PVDF, PTFE

Spindle PTFE

O-ring* FPM

Measuring tube DURAN© glass

Float air on request

Float water on request

Protective tube/shield PMMA


Technical data 4A. . .Pressure stage PN 6


4 Flow meter (Series 4A) with rear female G-threadand valve. With annular proximity switch.






G 1/4" - 212 10 ~125 33 175 61 90 30 18 21 Ø 5.5


Housing PVDF, PTFE

Spindle PTFE

O-ring* FPM








4 Flow meter (Series 4A) with rear female G-threadand valve. With light barrier.






G 1/4" - 212 10 ~125 33 175 61 90 30 18 21 Ø 5.5


Housing PVDF, PTFE

Spindle PTFE

O-ring* FPM








4 Mini-flow meter (Series 4M) –The precise miniespecially for the laboratory

1. Housing made of PP and PVDF⇒High media resistance

2. Easy to disassemble

3. Measuring tube made of Duran© glass⇒High corrosion resistance

The 4M flow meter was especially developed for the smallest flow rates. Due to its low height it is used particularly for the exactdetermination of smaller flow rates in the laboratory sector.


4 Flow meter 4M, with rear connection for flexibletube, with valve


4M100T0105PPFP DN1/6"/1/4" 0,2-2,0l/min Air PP/FPM

4M100T0140PPFP DN04/06 0,2-2,0l/min Air PP/FPM

4M100T0140PVFP DN04/06 0,2-2,0l/min Air PVDF/FPM

Dimensions 4M100T. . .

M L L1 L2 L3 L4 L5 B SW

10x1 ~87 9 18 ~41.5 71 ~31 15 14

Materials 4M. . .

Housing PP, PVDF

O-ring* FPM


Float Glass

Protective tube PMMA

* EPDM, FFKM auf Anfrage

Technical data 4M. . .Pressure stage PN 1


4 Flow meter series 4M, with rear connection forflexible tube, without valve


4M100T0140PNFP10 DN04/06 0,2-2,0l/min Air PP-NATUR/FPM

4M100T0140PPFP10 DN04/06 0,2-2,0l/min Air PP/FPM

4M100T0140PVFP10 DN04/06 0,2-2,0l/min Air PVDF/FPM

Dimensions 4M100T. . .

M L L1 L2 L3 L4 L5 B SW

10x1 ~87 9 18 ~41.5 71 ~31 15 14

Materials 4M. . .

Housing PP, PVDF

O-ring* FPM


Float Glass

Protective tube PMMA

* EPDM, FFKM auf Anfrage

Technical data 4M. . .Pressure stage PN 1


4 Flow Meters 4R for inline installation – yourpartner for standard measuring ranges

1. Can be installed directly in pipes⇒Integrated flexible tube connection, Series 1A

2. Straightforward replacement of the flow meter

3. Straightforward replacement of the glass tube⇒Easy to clean

4. Housing made of PP, PVDF and PFA⇒High media resistance

5. All sealing surfaces and threads are seam-less

6. Fine regulation valve as standard⇒also very small flow ranges can be regulated

On the Series 4R flow meters all sealing surfaces and threads are seam-less. Due to their special design they can be installeddirectly in pipes. Device replacement is straightforward and problem-free. The standard measuring tubes available make themsuitable for many measuring ranges. For the improved safety of the user against glass breakage, protective tubes made of PMMAare also used.


4 Flow meter (Series 4R) for inline installation, withconnection for flexible tube (Series 1A) and valve


4R200T1740PVFP DN04/06 2,5-25l/h H2O PVDF/FPM

4R100T1440PPEP DN04/06 4-40l/h Air PP/EPDM

4R100T1440PPFP DN04/06 4-40l/h Air PP/FPM

4R100T1440PVFK DN04/06 4-40l/h Air PVDF/FFKM

4R100T1440PVFP DN04/06 4-40l/h Air PVDF/FPM

4R200T1840PPFP DN04/06 4-40l/h H2O PP/FPM

4R200T1840PVFP DN04/06 4-40l/h H2O PVDF/FPM



4R200T2340PPFP DN04/06 10-100l/h H2O PP/FPM

4R200T2340PVFP DN04/06 10-100l/h H2O PVDF/FPM


4R200T2840PFFK DN04/06 40-400l/h Air PFA/FFKM

4R200T2840PFFP DN04/06 40-400l/h Air PFA/FPM


4R200T2840PVFK DN04/06 40-400l/h Air PVDF/FFKM


Dimensions 4R100T. . ., 4R200T. . .

G L L2 L4 L7 B DN

4R100T. . . M14x1.5 ~200 ~45 130 105 Ø 20 04/06

4R200T. . . M18x1.5 ~210 ~50 135 110 Ø 30 04/06

Materials Series 4R. . .

Housing PP, PVDF, PFA

Spindle PCTFE

O-ring* FPM


Float air glass

Float water stainless steel





4 Control Unit 4F – sets and regulates constantflow rates

1. Electrical fine control valve 5E113F⇒precise and reproducible adjustments using the electrical actuatop,⇒highly accuratecontrol due to linear flow rate characteristic

2. µ-processor-regulated control unit with percentage indication of opening

3. Series 4A or 4L flowmeters with measurement acqisition for individual measuring ranges

There are applications in which it is imperative to maintain constant flow rates. Effects such as pressure or temperaturefluctuations, as well as density or viscosity changes in the medium can change flow rates and as a result cause problems inprocesses. Particularly on the use of aggressive gaseous media or in applications in an aggressive environment it was very difficultin the past to ensure constant flow rates. With the newly developed intelligent control unit, errors can now also be detectedautomatically under difficult conditions and reliably regulated. The control unit FC4 comprises several components: the flow meter,a photoelectric switch, a precision metering valve with electrical actuator and the digital three-point controller with microprocessor.During the development of the new control unit, only fittings and components with high media resistance and that are highlysuitable for use with aggressive media were used. Application-specific requirements can be taken into account; integrated fittingsmade of various high quality plastics are available depending on the application. As a result the control unit is optimally suited forapplications with aggressive gaseous media.

The principle of operation is simple: The required flow rate is set by adjusting the photoelectric switch on the flow meter measuringtube. If the flow rate varies, the variation is signalled to the controller by the photoelectric switch; the controller immediately triggersan automatic correction via the upstream precision metering valve. Furthermore, special buttons on the controller make it possiblefor the user to quickly intervene manually. The control unit FC4 is suitable for flow rate ranges from 4 – 1,600 l/h with air and 2.5 –100 l/h with water.


4 Control unit

Article-Nr Connection Material

4F3687 G1/4"

Technical data 4F. . .

Control unit FC4

Housing Siemens LOGO! 12/24RC

Front IP 20 protection

Fastening snap-on housing for easy assembly on EN-supporting rails

Connection plug-in screw-in terminal block, 0.2 – 2.5 mm2

Dimensions 72 x 90 x 55 mm (w x h x d)

Display three-row 7-segment display (LED)

Power supply unit 24 V AC/DC +/- 10%

Output 0.4 – 2.7W

Flowmeters Flowmeters are available for the following flow rates:

4 – 1,600 l/h for gases

2.5 – 100 l/h for liquids

For more technical details, please see the appropriate technical details of the flow meter

Electrical actuator

Size 80 x 147 mm without valve

Weight 500 g without valve

Motor DC-motor 2619S024R

Capacity 2.6 VA

Reduction ratio 814:1

Torque 100mNm continous operating

Limit switch micro switch on both sides, adjustable

Position signal via potentiometer

Seal spindle is sealed twice upwards

Ambient temperature - 25°C up to + 70°C

Protection IP 65

Connection 6-pole plug-in connection


flow meter 4l flow meter 4n / 4t flow meter 4a mini ow meter 4m flow meter...

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