Festo SFAB Instructions & Operating

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Page 1

SFAB

Flow sensor

Instructions| Operating

8110112 201904c [8110114]

Translation of the original instructions

1 About this document

1.1 Applicable documents

All available documents for the product èwww.festo.com/pk.

5 Product description

5.1 Product design

Festo AG & Co. KG Ruiter Straße 82 73734 Esslingen Germany +49 711 3470

www.festo.com

8110112

2 Safety

2.1 General safety instructions

– Only use the product in original status without unauthorised modifications. – Only use the product if it is in perfect technical condition. – Observe labelling on the product. – Condensation, oil mist, foreign matter and other impurities in the compressed

air can damage the product. Only use media in accordance with the specifica tions èTechnical data.

– Comply with specified critical limits. – Take into consideration the ambient conditions at the location of use. – The product is suitable for industrial purposes only. Measures for radio inter

ference suppression may be necessary in residential areas.

Return to Festo

Hazardous substances can endanger the health and safety of personnel and cause damage to the environment. To prevent hazards, the product should only be returned upon explicit request by Festo. – Consult your regional Festo contact. – Complete the declaration of contamination and attach it to the outside of the

packaging.

– Comply with all legal requirements for the handling of hazardous substances

and the transport of dangerous goods.

2.2 Intended use

The SFAB is designed to monitor changes in the flow rate and air consumption of gaseous media in piping systems or terminals in industry.

2.3 Training of qualified personnel

– Installation, commissioning, maintenance and disassembly should only be

conducted by qualified personnel.

3 Further information

– Accessories èwww.festo.com/catalogue. – Spare parts èwww.festo.com/spareparts.

Supply port 1

Display

B pushbutton

Edit button

A pushbutton

Fig. 1 SFAB

6 Function and application

6.1 Functional principle

The SFAB uses a thermal measurement method. Here, the amount of heat drawn from a heated surface of the sensor by the medium flowing past it is calculated. Through the amount of heat removed, the flow rate or accumulated air consump tion is determined and shown on the display. The connection to higherlevel sys tems is implemented through 2 binary outputs (OutA/OutB) and one analogue output. Switching points can be defined for both binary outputs. Switching points for both binary outputs are possible for flow rate measurement, a consumption switching pulse for output A (OutA) is possible for cumulative air consumption measurement. The combination of cumulative air consumption measurement (OutA) and flow rate measurement (OutB) is possible. The flow value is output via the analogue output.

7 Assembly

7.1 H-rail (manifold assembly)

Plug for the electrical connection

(M12) Hole for plate mounting

Supply port 2

Mounting slide for Hrail and wall

mounting (rear)

4 Service

Contact your regional Festo contact person if you have technical questions èwww.festo.com.

Fig. 2 Mounting on Hrail

1. Maintain lateral distance x = 10mm to earthed surfaces.

2. Hang SFAB in Hrail.

3. Press SFAB in the direction of the arrow. SFAB snaps into place.

Page 2

7.2 Wall mounting

+24 V

0 V

PNP/NPN

+24 V

0 V

PNP/NPN

2. Configure binary outputs according to the wiring. – Tightening torque for the union nut at the plug connector is max. 0.5Nm

Pin Wire colour

1 Brown (BN) Operating voltage

2 White (WH) Binary output B (OutB)

3 Blue (BU) 0V

4 Black (BK) Binary output A (OutA)

5 Grey (GY) Analogue output C

1) When using the connecting cable as per Accessories.

Allocation Plug

+24VDC

M12, 5pin

Tab. 1 Pin allocation

Circuit diagrams

Fig. 3 Wall mounting

1. Maintain lateral distance x =mm to earthed surfaces.

2. Fasten the adapter plate with 2 screws M3.

3. Hang the SFAB in the adapter plate.

4. Press SFAB in the direction of the arrow. SFAB snaps into place.

7.3 Plate mounting

Fig. 4 Plate mounting

1. Maintain lateral distance x =mm to earthed surfaces.

2. Fasten SFAB with washers and 2 screws M4.

– Tightening torque: 1Nm

7.4 Rotate display

The display can be rotated in 90° steps. The turning range is limited to approx. 270° by a stop.

SFAB-...-2SA SFAB-...-2SV

Tab. 2 Circuit diagrams

9 Commissioning

1. Switch on the operating voltage. SFAB is in RUN mode.

2. Define the switching behaviour of the binary outputs.

– For flow measurement [FLW]: switching points [SP] and hysteresis [Hy] – For cumulative air consumption measurement [ConS] only with OutA:

consumption switching impulse [CI]

9.1 Switching outputs

9.1.1 Switching functions

9.1.1.1 Threshold value comparator in the flow rate measurement for OutA or

OutB

Function NO (normally open) NC (normally closed)

Switching function: – 1 switching point (SP)

TEACH mode: – 2 teach points (TP1, TP2)

Tab. 3 Threshold value comparator

9.1.1.2 Window comparator in the flow rate measurement for OutA or OutB

Fig. 5 Rotate display

8 Installation

8.1 Pneumatic installation

• Mount the hoses to port 1 and port 2 (flow direction èmarked on the

product).

If the tubing is incorrect, the measured values are shown flashing on the display.

8.2 Electrical installation

WARNING!

Risk of injury due to electric shock.

• For the electrical power supply, use only PELV circuits in accordance with IEC 602041/EN 602041 (Protective ExtraLow Voltage, PELV).

• Observe the general requirements of IEC 602041/EN602041 for PELV cir cuits.

• Only use voltage sources that ensure a reliable electric separation from the mains network in accordance with IEC 602041/EN 602041.

1. Use signal lines that are shorter than 10m.

Function NO (normally open) NC (normally closed)

Switching function: – 2 switching points (SP.Lo,

SP.Hi)

TEACH mode: – 2 teach points (TP1, TP2) – TP1 = SP.Lo, TP2 = SP.Hi

1) SP.Lo = smaller value, SP.Hi = larger value, independent of the teach sequence

Tab. 4 Window comparator

9.1.1.3 Consumption switching pulses [CI] for cumulative air consumption measurement for OutB

A threshold value for air consumption can be set with the consumption switching impulse [CI]. If the set threshold value is reached, a switching impulse is emitted at the output OutA for 100ms. With each switching impulse, measurement of the air consumption is started again.

Page 3

Setting NO (N/O (normally open) contact)

Setting NC (N/C (normally closed) contact)

Tab. 5 Consumption switching pulses

9.2 Display components

9.2.1 Symbols on the display

Symbol Description

OutA / OutB Switching output A/switching output B

Lock Security code active (blocked against unauthorised programming)

Run Accumulated air consumption measurement is active in RECORDER

Option Sensor is set to a standard condition that differs from the factory set

Stop Air consumption measurement stopped

mode

ting è 9.7.4.1 Setting the standard conditions

Switching output set / not set

Threshold value comparator

Window comparator

Air consumption switching mode (consumption – only for OutA)

Cumulative air consumption impulse (consumption impulse)

Switching point

Lower switching point (switching point  low)

Upper switching point (switching point  high)

Hysteresis

N/O contact (normally open)

N/C contact (normally closed)

Switching mode flow rate (flow  only for OutA)

Minimum flow rate (flow low)

Maximum flow rate (flow high)

Special menu

Analogue filter

Digital filter

Display red with switching status ON and/or logic 1

Display red with switching status OFF and/or logic 0

Positive switch output

Zero switch output

Segments illuminated: graphic display of the current measured value related to the maximum measured value of the measuring range

Running light (1 segment): air consumption measurement for OutA or RECORDER mode active

3 segments flash: hysteresis value is displayed

1 segment flashes: – Segment 6: switching point SP or SP.Lo is displayed – Segment 8: switching point SP.Hi is displayed – Segment1: min. flow rate (F.Lo) is displayed – Segment10: max. flow rate (F.Hi) is displayed

Tab. 6

9.3 Preparing commissioning

In the basic status, the product is in RUN mode. The current measurement values are displayed. The basic status can be reached from other modes by: – Pressing Edit button for 3 seconds – Expiration of a monitoring time, timeout

1. Switch on the operating voltage. The SFAB is in RUN mode.

2. Checking the SFAB settings è 9.6 SHOW mode.

9.4 Symbols for representing the menu structure

Symbol Description

Automatic return to the basic status (RUN mode) when the monitoring time has expired (here 80 seconds)

In order to return manually to the basic status (RUN mode), press the EDIT button for 3seconds.

Generate flow rate (for teaching the measured value  here Flow 1)

The symbol on the display flashes (here OutB)

Security code active (lock  blocked against unauthorised program ming)

Security code inactive (lock)

Press key (here A key).

Press the A key or B key. SFAB changes to the setting indicated by the arrows.

Press A and B pushbuttons simultaneously.

Press pushbutton (here A pushbutton) and the EDIT button simultan eously.

Press Akey or Bkey to set the desired value.

Display for a value or switching point. Value can be set.

Press the Edit button.

Branching in the menu

Tab. 7

9.5 RUN mode

The following values are displayed in RUN mode: – Measurement values for the flow rate (in l/min, scfm or l/h) – Measurement values for air consumption (in m³, scf or l) – Signal states of the switching outputs OutA, OutB (set, not set)

If the measured value display flashes, one of the following errors has occurred:

• Measured value outside the permissible measuring range

• Incorrect tubing è 8.1 Pneumatic installation

9.6 SHOW mode

In SHOW mode, the current settings for the switching outputs OutA and OutB are displayed. The SFAB must be in RUN mode.

• To start the SHOW mode for the respective switching output, press the A key (OutA) or B key (OutB).

If there are errors, the corresponding error numbers are displayed first after pressing the A / B pushbutton.

• To display the settings one by one, press the A/B pushbutton repeatedly.

When all settings have been displayed, the SFAB goes back into RUN mode when the A pushbutton / B pushbutton are pressed again and displays the current measurement value for the corresponding output. Thus, the SHOW mode can also be used to switch the display, e.g. to switch between the displayed measured values for a combination of air consumption measurement and flow rate measurement. The following settings will be displayed for outA: – With flow measurement [FLW]:

– Switching function [threshold value or window comparator] – Switching point [SP], Switching points [SP.Lo] and [SP.Hi] – Hysteresis [Hy] – Switching element function [no/nc] (N/O contact/N/C contact) – Minimum flow rate [F.Lo] (flow low) – Maximum flow rate [F.Hi] (flow high)

To delete the minimum or maximum value, press the EDIT button.

– For air consumption measurement [ConS]:

– Air consumption switching impulse [CI] – Switching element function [no/nc] (N/O contact/N/C contact) – Minimum value flow rate [F.Lo] – Maximum value flow rate [F.Hi]

To delete the minimum or maximum value, press the EDIT button. The following settings will be displayed for OutB: – Switching function [threshold value or window comparator] – Switching point [SP], Switching points [SP.Lo] and [SP.Hi] – Hysteresis [Hy] – Switching element function [no/nc] (N/O contact/N/C contact) – Status colour change [bLUE/rON/rOFF] – Minimum value flow rate [F.Lo] – Maximum value flow rate [F.Hi]

To delete the minimum or maximum value, press the EDIT button.

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Fig. 6 Menu structure for SHOW mode

9.7 EDIT mode

The following settings can be conducted in the EDIT mode: – Switching mode for OutA (air consumption [ConS] or flow rate [FLW] ) – Switching function (threshold value or window comparator for OutA and

OutB) – Switching points [SP] for OutA and OutB – Air consumption switching impulse [CI] only for OutA in switching mode

[ConS] – Hysteresis [Hy] for OutA and OutB – Switching element function [no/nc] for OutA and OutB – Colour change of the display from blue to red for flow mode (for OutB) In addition, the following settings can be made in the special menu: – Switching the standard conditions via [Option] (OFF, 1, 2) – Physical units for flow rate [FLW] (l/h, scfm, l/min) – Analogue filter [AnA.F] – Digital filter [dIG.F] – Physical units for air consumption [ConS] (m3, scf, l) – Switching output [nPn/PnP] – Security code [Lock]

Fig. 7 Menu structure, EDIT mode

9.7.1 Start EDIT mode

WARNING!

Manipulation of signal statuses may cause serious personal injury, depending on the functioning of the machine/system.

• Note that if the switching status of the outputs is modified in EDIT mode, the new status will be effective immediately.

The following settings can be selected with the control buttons (A/B pushbutton): – Switching output for which the characteristics is to be set – Special menu

1. Press the Edit button.

EDIT mode is active and [OutA] flashes. In case of active security blocking,

[Lock] flashes.

2. Press the A/B pushbuttons until the chosen security code is set.

3. Press the Edit button.

EDIT mode is active and [OutA] flashes.

9.7.2 Setting the switching characteristics of the switching outputs

Both switching outputs (OutA/OutB) can be set for flow measurement. Switching output OutA can alternatively be set for the cumulated air consumption measure ment. The combination of cumulative air consumption measurement (OutA) and flow rate measurement (OutB) is possible.

9.7.2.1 Setting the switching function for flow rate measurement

The process for setting the switching outputs is fundamentally the same. Addi tionally, the switching mode [FLW] must be selected for OutA since OutA can also be configured for air consumption measurement. For OutB, the colour change for the display can also be set. In the following, the process is described using the switching output OutA.

Requirement

– SFAB is in EDIT mode and [OutA] flashes

1. Press the Edit button to confirm the selection.

[FLW] or [ConS] flashes.

2. Select flow rate measurement (FLW) with the A/B pushbuttons.

3. Press the Edit button to confirm the selection.

The currently set switching function flashes.

4. Select the desired switching function with the A/B pushbuttons.

5. Press the Edit button to confirm the selection.

[SP] or [SP.Lo] flashes.

6. Set the switching point (SP or SP.Lo) with the A/B buttons.

7. Press the Edit button to confirm the set value.

With switching function window comparator: [SP.Hi] flashes. For switch

ing function threshold value comparator: Continue with step 10.

8. Set the value (SP.Hi) with the A/B pushbuttons.

9. Press the Edit button to confirm the set value.

[Hy] flashes.

10. Set the value for the hysteresis (Hy) with the A/B pushbuttons.

11. Press the Edit button to confirm the set value.

[no] or [nc] flashes.

12. Select the switching element function (NO/NC) with the A/B pushbuttons.

13. Press the Edit button to confirm the set value.

SFAB is in RUN mode.

14. Check whether the SFAB switches as desired with a test run (vary the flow rate).

9.7.2.2 Setting the switching function for air consumption measurement

Requirement

– SFAB is in EDIT mode and [OutA] flashes

Page 5

1. Press the Edit button to confirm the selection. [FLW] or [ConS] flashes.

2. Select flow measurement (ConS) with the A/B buttons.

3. Press the Edit button to confirm the selection. [CI] flashes.

4. Set the value for the air consumption switching impulse (CI) with the A/B

pushbuttons.

5. Press the Edit button to confirm the set value. [no] or [nc] flashes.

6. Select the switching element function (NO/NC) with the A/B pushbuttons.

7. Press the Edit button to confirm the set value. SFAB is in RUN mode.

8. Check whether the SFAB switches as desired with a test run (flow rate).

9.7.3 Setting the colour change (only for OutB)

In order to detect the system status over longer distances, a colour change can be set at the OutB output. If the set switching threshold is exceeded or not reached, the colour of the display changes. The following settings can be selected: – r.ON

– Display is red when the switching output is High (1). – Display is blue if the switching output is Low (0).

– r.OFF

– Display is red when the switching output is Low (0). – Display is blue if the switching output is High (1).

– bLUE

– Display is blue; the colour change function is switched off.

r.ON r.OFF bLUE

Blue Red Red Blue Blue

REF / Cond Off 1 2

Air pressure (absolute) [kPa] 101.325 101.325 100

Temperature [°C] 0 15 20

Humidity [%] 0 0 65

Correction factor, measurement range limit value 1 1.055 1.087

Tab. 9 Standard conditions for flow rate and volume units

1. Select the desired setting (OFF, 1 or 2) using the A/B pushbuttons.

2. Press the Edit button to confirm the selection. [FLW] is displayed and the set value flashes. The unit for the flow rate

(l/h, scfm or l/min) can be set.

9.7.4.2 Setting the physical unit for the flow rate

For the types SFAB600U and SFAB1000U, the unit l/h cannot be set due to dis play reasons.

1. Select the desired setting (l/h, scfm or l/min) using the A/B pushbuttons.

2. Press the Edit button to confirm the selection. [AnA.F] and the set value are displayed. The analogue filter can be set.

The selected physical unit is shown in RUN mode in the display at the bottom right.

9.7.4.3 Setting the filter time constant for the analogue filter

With the analogue filter, the rise time (filter time constant) of the analogue output can be changed (default value = 60 ms).

1. Select the value for the filter time constant (15 ms, 30 ms, 60 ms, 125 ms, 250

ms, 500 ms or 999 ms) with the A/B pushbuttons.

2. Press the Edit button to confirm the set value. [dIG.F] and the set value flash. The digital filter can be set.

9.7.4.4 Setting smoothing for the digital filter

The display values can be smoothed with the digital filter. The degree of smooth ing can be set in 6 steps from d1 = low smoothing to d6=maximum smoothing. With increasing smoothing, the switchon / switchoff time of the switching out puts rises. With d.Off the smoothing is deactivated.

Tab. 8 Colour change

Requirement

– SFAB is in EDIT mode and [OutA] flashes

1. Press B pushbutton. [OutB] flashes.

2. Press the Edit button to confirm the selection.

3. Press the Edit button repeatedly until [rON], [rOFF] or [bLUE] flashes in the dis

play.

4. Select the desired setting (rON, rOFF or bLUE) using the A/B pushbuttons.

5. Press the Edit button to confirm the selection. SFAB is in RUN mode.

9.7.4 Setting the special menu

The following settings can be undertaken in the special menu: – Standard conditions – Physical units for flow rate (l/h, scfm or l/min) – Analogue filter [AnA.F] with filter time constant in ms – Digital filter [dIG.F] with smoothing in 7 steps for display and switching output – Physical units for air consumption (m3, scf or l) – Select the switching output [PnP] or [nPn]. – Removal of the security blocking [Lock] with security code

Requirement

– SFAB is in EDIT mode and [OutA] flashes

1. Press the A or B pushbutton repeatedly until the menu (SPEC) is selected. [SPEC] flashes.

2. Press the Edit button to confirm the selection. [Option] flashes. The standard conditions (OFF, 1 or 2) can be set.

9.7.4.1 Setting the standard conditions

The air mass flow measured and output by the SFAB refers to standard condi tions. The SFAB is factory calibrated to the physical standard conditions according to DIN 1343.

Changing the reference standard only adjusts the display on the sensor. The ana logue value at the analogue output still refers to DIN 1343 and must be conver ted.

• Multiply the end value of the flow measurement range by the specified correc

tion factor.

• End value of the analogue output refers to the end value of the measuring

range. This changes the transfer function.

REF / Cond Off 1 2

Standard DIN 1343 ISO 2533 ISO 6358

Fig. 8 Signal flow from the analogue filter to the digital filter

A high filter time constant and high smoothing can result in a switching time of several seconds.

1. Select the value for cushioning (d1 to d6 or d.OFF) with the A/B pushbuttons.

2. Press the Edit button to confirm the set value. [ConS] is displayed and the currently selected value flashes. The unit for

the air consumption (m3, scf or l) can be set.

9.7.4.5 Set the physical unit for the air consumption

1. Select the desired setting (m3, scf or l) with the A/B pushbuttons.

2. Press the Edit button to confirm the set value. The currently set value [PnP] or [nPn] for the switching element output

flashes. The switching element output can be set.

9.7.4.6 Set switching element output

The two switching outputs can be set as positive switches (PNP) or as zero switches (NPN) by means of the integrated pushpull step.

1. Select the desired setting (PNP or NPN) using the A/B pushbuttons.

2. Press the Edit button to confirm the selection. [Lock] flashes. The security code can be set.

9.7.4.7 Setting the security code

To protect the setting from unauthorised access, a numerical code of up to 4 digits can be set. The security code must be entered each time the settings are changed (EDIT mode and TEACH mode).

1. Set the desired security code with the A/B pushbuttons.

2. Press the Edit button to confirm the selection. The SFAB is in RUN mode.

9.8 TEACH mode

The switching points can be set in the TEACH mode.

Page 6

Fig. 9 Menu structure for TEACH mode

• Before teaching in EDIT mode, select the desired switching function

(threshold value or window comparator) è 9.7 EDIT mode.

1. Press the A pushbutton and B pushbutton simultaneously. The SFAB is in RECORDER mode. The status of the air consumption meas

urement [Run] or [Stop] is displayed.

2. When [Stop] is displayed, press the A pushbutton. [Run] and a running light are displayed. The air consumption measure

ment has started.

3. Press the A pushbutton. [Stop] is displayed. The air consumption measurement is stopped.

4. Press the A and B pushbuttons. The SFAB is in RUN mode.

If the RECORDER mode is left during the consumption measurement, the con sumption measurement is continued in the background.

9.9.1 Resetting the measured values to zero

• To reset a measure value to zero, press the B pushbutton in RECORDER mode.

10 Operation and use

Changes to the device settings take effect immediately at the outputs.

The air mass flow displayed by the SFAB refers to the standard condition set in the special menu under Options. When comparing volumetric flow rates: – Make sure that the volumetric flow rates to be compared (e.g. operating volu

metric flow rate, amount supplied by a compressor, measured values of a flow sensor from another manufacturer) refer to the same standard condi tions.

– After the supply voltage is switched on, the SFAB needs a warmup time of 5

minutes until it achieves the specified accuracy.

10.1 Resetting SFAB to factory settings

Threshold value comparator Window comparator

The (taught) switching point is derived from the average value of both measured values: – SP = 1/2(Flow 1 + Flow 2) – Special case: SP = Flow 1 = Flow 2

The taught switching window is derived from the measured values: – SP.Lo = Flow 1 – SP.Hi = Flow 2

Tab. 10

9.8.1 Teaching switching variables

The process for teaching the switching outputs for OutA (A pushbutton) and OutB (B pushbutton) is the same. In the following, the process is described using the switching output OutA.

1. Generate flow rate (Flow 1).

2. Press the A pushbutton and the EDIT button simultaneously. The measured value is taken over as the first teach point. [OutA] and the

bar graph will flash. In case of active security blocking, [Lock] flashes. Set the security code with the A pushbutton or B pushbutton. To accept the measured value, press the Edit button.

3. Generate flow rate (Flow 2).

4. Press the A pushbutton and the EDIT button simultaneously. The measured value is taken over as the second teach point. The switch

ing point (SP) or switching points (SP.Lo and SP.Hi) become valid. The SFAB is in RUN mode.

9.9 RECORDER mode

In the RECORDER mode, a manual accumulated air consumption measurement can be performed.

By resetting to the factory settings, the current settings are lost. If required, make a note of these settings before resetting.

1. Switch off operating voltage.

2. Press and hold the A pushbutton, B pushbutton and Edit button.

3. Switch on the operating voltage. The SFAB is in RUN mode.

11 Service

1. Turn off energy source and compressed air.

2. Clean sensor with nonabrasive cleaning agents.

12 Disassembly

1. Turn off energy source and compressed air.

2. Separate connections from the sensor.

3. For panel mounting: Loosen retaining screws.

For Hrail or wall mounting: loosen the fixing slide è Fig.11

Fig. 10 Menu structure RECORDER mode

Fig. 11 Disassembly

13 Fault clearance

Fault description Cause Remedy

Incorrect measured value indic ator

In case of flow rate measure ment: measured value is flash ing

SFAB operated with nonpermit ted medium

SFAB dirty Replace device.

Measurement outside permit ted measuring range

Incorrect direction of flow Correct the tubing

Operate SFAB only with permit ted media.

Maintain permitted measuring range è 15 Technical data. Accuracy refers only to the per mitted measuring range.

è 8.1 Pneumatic installation.

Page 7

Fault description Cause Remedy

In case of air consumption measurement: measured value is flashing

Outputs do not switch corres ponding to the setting

Settings cannot be edited (Lock)

O.FLO Measurement range exceeded

Er1, Er2, Er3 Device faulty Replace device.

Er9 Measurement range undershot

Er10 Measurement range exceeded

Er17 Undervoltage Maintain operating voltage.

Measuring range end value has been exceeded at least once. Specified accuracy can there fore probably not be main tained.

Short circuit or overload at cor responding output

Access protection active Enter the security code.

(displayed in RUN mode)

(displayed in SHOW mode)

Make sure that the end value of the measuring range is not exceeded.

Rectify short circuit/overload.

Check operating conditions.

Check electrical wiring

Tab. 11

14 Disposal

ENVIRONMENT!

Send the packaging and product for environmentally sound recycling in accord ance with the current regulations èwww.festo.com/sp.

15 Technical data

SFAB -10U -50U -200U -600U -1000U

General

Approval CTick, c UL us  Recognized (OL)

CE marking (declaration of conformity èwww.festo.com/sp)

Measured variable Flow rate, consumption

Flow direction Unidirectional P1 è P2

Measuring principle Thermal

Flow measuring range [l/min] 0.1…10 0.5…50 2…200 6…600 10…

Operating pressure [bar] 0…10

Operating pressure [kPa] 0…1000

Nominal pressure [kPa] 600

Pressure drop [kPa] < 10

Ambient temperature [°C] 0…50

Temperature of medium [°C] 0…50

Nominal temperature [°C] 23

Operating medium

Output general

Precision of zero point

Accuracy of margin

Repetition accuracy of zero point

Repetition accuracy of mar gin

Temperature coefficient of margin

Pressuredependent margin [% FS/

Switching output

Switching output 2x PNP or 2x NPN, adjustable

Switching function Window comparator or threshold value comparator,

Switching element function N/C or N/O contact, adjustable

Max. output current [mA] 100

Voltage drop [V] Max. 1.5

Switchon time Adjustable (factory setting: approx. 80 ms)

Switchoff time Adjustable (factory setting: approx. 80 ms)

Inductive protective circuit Adapted to MZ, MY, ME coils

Analogue output

Characteristic flow rate curve [l/min] 0…10 0…50 0…200 0…600 0… 1000

Output characteristic curve for current

1)2)

[% FS] ±0.3

[% FS] ±3

[% FS] ±0.2

[% FS] ±0.8

[% FS/K] ≤ 0.1

100kPa]

[mA] 4…20

In accordance with EU EMC Directive In accordance with EU RoHS Directive SFAB...EX2: in accordance with EU Explosion Protec tion Directive (ATEX)

1000

Compressed air to ISO85731:2010 [6:4:4]

Nitrogen

±0.5

adjustable

Compressed air to ISO85731:2010 [7:4:4]

SFAB -10U -50U -200U -600U -1000U

Max. load resistance of cur rent output

Min. load resistance of voltage output

Rise time [ms] Adjustable:

Output, additional data

Short circuit current rating Yes

Overload protection Present

Electronics

Operating voltage range [VDC] 15…30

Reverse polarity protection For all electrical connections

Electromechanics

Electrical connection Straight plug, M12x1, 5pin

Max. connecting cable length [m] < 10

Mechanics

Mounting position Any

Product weight [g] 160

Note on materials, housing Reinforced polyamide, polycarbonate

Display/operation

Display type Illuminated LCD, blue

Displayable units l/min, scf, scfm, l, m#, scf, l/h l/min, scf, scfm, l, m#

Setting range for flow rate threshold value

Setting range for consump tion impulse threshold value

Hysteresis setting range 0%FS…90%FS

Immissions/emissions

Storage temperature [°C] –20…+80

Degree of protection IP65

Protection class III

1) Accuracy at nominal conditions (6 bar, 23 °C and horizontal mounting position)

2) % FS = % of the flow range end value (full scale)

3) The precision of the zero point and precision of the spread together correspond to the precision of the flow

rate: precision of flow rate = ± (0.3% FS + 3% of measured value). % o.m.v. = % of the measured value

[Ω] 500

[kΩ] 10

15, 30, 60 (factory setting), 125, 250, 500, 999

1%FS…100%FS

[l] 0.1…

[m#] 0.01…199.99 0.1…

[scf] 0.01…199.99 0.03…

1999.9

0.2…

1999.9

1…

1999.9

199.99

2…

1999.9

0.1…999.9

3…

1999.9

1… 19999

Tab. 12 Technical data

16 Examples for calculating the maximum error of the display

– Flow rate measuring range: 10…1000l/min (FS = 1000) – Measured value: 600l/min

Range error (e.g. ±3 %FS) Zero point error

Tab. 13

Clamping error and zero point error

The range error is proportional to the measured value. At 600 l/min, the span error is 3 % of the measured value = 18 l/min. The zero point error is independent of the measured value. It is 0.3 %FS = 3 l/min.

Display error with nominal conditions (6 bar, 23°C):

The display error at nominal conditions is the result of adding the range and zero error. The actual flow rate is in the range of 600 ± (18+3)l/min = 600 ± 21l/min.

Display error under different nominal conditions (e.g. 8 bar, 40°C):

Temperature and pressure errors are range errors. The temperature error at 40 °C is ±0.1 %FS/K x 17 K = ±1.7 % of the measured value = ±10.2 l/min. The pressure error at 8 bar is ±0.5 %FS/bar x 2 bar = ±1 % of the measured value = ±6 l/min. The error of the display at deviating nominal conditions results from the addition of all error values (span, zero point, temperature, pressure). The actual flow rate is therefore in the range of 600 ± (18+3+10.2+6)l/min = 600 ± 37.2l/min.

17 Range of application and certifications

Certain configurations of the product have been certified by Underwriters Laborat ories Inc. (UL) for the USA and Canada. These configurations bear the following mark:

Page 8

Fig. 12

UL Recognized Component Mark for Canada and the United States. Only for con nection to an NEC Class 2 supply. Raccorder Uniquement a un circiut de Classe 2.

Observe the following if the UL requirements are to be complied with in your application:

• Regulations for complying with the UL certification can be found in the separ ate ULspecific special documentation. The technical data listed there also apply here.

• The technical data in this documentation may show values deviating from

this.