SI0551 - Detector IFM - Free user manual and instructions

USER MANUAL SI0551 IFM

Operating instructions

Flow monitor

SI5004

SI0551

Contents

1 Preliminary note.... 3

1.1 Symbols used.... 3
1.2 Warnings.... 3

2 Safety instructions 4
3 Transport, handling and storage 5
4 Intended use 6
5 Function 7
6 Installation.... 8

6.1 Installation position 8

6.1.1 Immersion depth 8
6.1.2 Recommended mounting position 8
6.1.3 Conditionally possible installation position.... 9
6.1.4 Impermissible installation position.... 9
6.1.5 Orientation.... 10

6.2 Interference.... 10
6.3 Process connection.... 10

7 Electrical connection 12
8 Operating and display elements.... 13
9 Set-up 14
10 Settings.... 15

10.1 High-flow adjustment.... 15
10.2 Low-flow adjustment 15
10.3 Reset the device.... 15
10.4 Lock/unlock 15

11 Operation.... 17
12 Troubleshooting.... 18
13 Maintenance, repair and disposal 19

1 Preliminary note

You will find instructions, technical data, approvals, accessories and further information using the QR code on the device / packaging or at documentation.ifm.com.

1.1 Symbols used

√ Requirement
Instruction
Reaction, result

bold Designation of keys, buttons or indications

→ Cross-reference without link

→ Cross-reference with link

Important note

Non-compliance may result in malfunction or interference

Information

Supplementary note

1.2 Warnings

Warnings indicate the possibility of personal injury and damage to property. This enables safe product handling. Warnings are graded as follows:

WARNING

Warning of serious personal injury

▷ If the warning is not observed, fatal and serious injuries are possible.

CAUTION

Warning of minor to moderate personal injury

▷ If the warning is not observed, minor to moderate injuries are possible.

ATTENTION

Warning of damage to property

▷ If the warning is not observed, damage to property is possible.

2 Safety instructions

- The unit described is a subcomponent for integration into a system.

• The system architect is responsible for the safety of the system.

• The system architect undertakes to perform a risk assessment and to create documentation in accordance with legal and normative requirements to be provided to the operator and user of the system. This documentation must contain all necessary information and safety instructions for the operator, the user and, if applicable, for any service personnel authorised by the architect of the system.

• Read this document before setting up the product and keep it during the entire service life.

• The product must be suitable for the corresponding applications and environmental conditions without any restrictions.
• Only use the product for its intended purpose (→ Intended use).
• Only use the product for permissible media.
• If the operating instructions or the technical data are not adhered to, personal injury and/or damage to property may occur.
• The manufacturer assumes no liability or warranty for any consequences caused by tampering with the product or incorrect use by the operator.
• Installation, electrical connection, set-up, operation and maintenance of the product must be carried out by qualified personnel authorised by the machine operator.
• Protect units and cables against damage.

3 Transport, handling and storage

▶ Store the device in its original packaging.
▶ When the device is to be stored again, use the original packaging.
▶ Otherwise, provide unused connections with either a mating connector or a protective cap and pack the device in suitable packaging.
▶ Observe the permissible ambient conditions for the device during storage (→ Technical data).

4 Intended use

The device monitors the flow in liquid and gaseous media.

5 Function

The device measures the flow velocity based on the calorimetric principle and converts it into an analogue output signal (4–20 mA).

The output signal follows the sensor's characteristic curve. It shows how the LED strip indicates the relative flow velocity within the detection range.

In case of excess flow (flow velocity exceeds the detection zone) the output signal increases to 20...22 mA.

A: Operation indicatopn (LED strip)
B: Flow velocity
C: Characteristics
D: Sensor signal
E: Output signal in [mA]

Fig. 1: Analogue signal

The device is delivered with the following factory settings: Detection range = 5...100cm/s in water. The typical response time of the unit is 1...10 s.

6 Installation

CAUTION

During installation or in case of mechanical failure, high pressure or hot media can leak from the system.

▷ Risk of injury caused by pressure or burns.
▶ Ensure that the system is free of pressure during installation.
▶ Ensure that no media can leak at the mounting location during installation.

6.1 Installation position

6.1.1 Immersion depth

Fig. 2: Immersion depth

• The sensor tip must be completely surrounded by the medium.
• Recommended immersion depths: minimum 12 mm.

6.1.2 Recommended mounting position

Fig. 3: Recommended mounting position

• For horizontal pipes: mounting from the side.
• For vertical pipes: mounting in the rising pipe.

6.1.3 Conditionally possible installation position

Fig. 4: Conditionally possible installation position

• For horizontal pipes, if the pipe is free from build-up: mounting from below.
• For horizontal pipes, if the pipe is completely filled with medium: mounting from the top.

6.1.4 Impermissible installation position

Fig. 5: Impermissible installation position

• The sensor tip must not be in contact with the pipe wall.
• Do not mount in downpipes that are open at the bottom.

6.1.5 Orientation

Fig. 6: Flow direction (arrow)

▶ To ensure optimum measurement accuracy, install the sensor so that the connector is facing away from the direction of flow.

The side opposite the direction of flow is also marked by a hole above the wrench flat (1).

6.2 Interference

Structures in the pipe, bends, valves, reducing pieces and the like affect the function of the unit.

▶ Adhere to the distances between sensor and interference.

Fig. 7: Inlet and outlet pipe lengths

D: Outside diameter of the pipe

S: Interference

6.3 Process connection

Using process adapters the unit can be adapted to different process connections.

A correct fit of the unit and ingress resistance of the connection are only ensured using ifm adapters.

For small flow rates, ifm adapter blocks are available.

The device is supplied without accessories.

Information about available accessories at documentation.ifm.com.

The optimum function is not ensured when using components from other manufacturers.

Fig. 8: Connect the device to the process using the adapter

1: Process connection

2: Adapter

3: Sensor tip

4: Coupling nut

▶ Grease the threads of the process connection, adapter and sensor. Use a lubricating paste which is suitable and approved for the application.

Ensure no grease is applied to the sensor tip.

▶ Screw the suitable adapter into the process connection.
▶ Place the flow monitor onto the adapter and tighten the nut. Tightening torque 25 Nm. Ensure that the unit is correctly oriented.

7 Electrical connection

The unit must be connected by a qualified electrician.

Observe the national and international regulations for the installation of electrical equipment. Voltage supply according to SELV, PELV.

▶ Disconnect power.
▶ Connect the unit as follows:

Fig. 9: Wiring

1: Ub+
2: Analogue output
3: Ub-
4: Not used

8 Operating and display elements

1: Operation indication

The green LEDs show the current flow:

The LEDs 0...9 represent the range between flow standstill and maximum flow.

2: Setting buttons for adjustment and configuration

9 Set-up

▶ Switch on the supply voltage.
▷ All LEDs light and go out again step by step. During this time, the output signal is at 20 mA.
▷ The device is in the operating mode.
▶ Let the normal flow circulate in the installation.
▶ Check the display and determine further actions:

Display		Explanation
1		The factory set operating range is suited for the application.
2		The normal flow rate is below the display range.▸ ▶ Carry out high-flow adjustment.
3		The normal flow rate exceeds the display range (LED 9 flashes).▸ ▶ Carry out high-flow adjustment.

Tab. 1: Display settings at factory settings (→ Function)

The factory settings can be restored at any time (→ Reset Device).

For media other than water:

▶ Perform an additional calibration for minimum flow (→ Low-flow adjustment).

10 Settings

10.1 High-flow adjustment

The device defines the current flow as the normal flow and adapts the display accordingly.

▶ Let the normal flow circulate in the installation.
▶ Press the ⬤ button and keep it pressed..

▷ LED 9 is on, after approx. 5 seconds it flashes.

▶ Release the ⬤ button.
▷ The device is adapted to the flow conditions. It goes into operating mode.
▷ The display should now show an LED indication similar to example 1 ➞ 14.

If all LEDs are flashing red, the adjustment has failed. Possible causes ➕ Chapter “Troubleshooting”. The device switches to operating mode with unchanged values.

10.2 Low-flow adjustment

If the device is used in media other than water, the device should additionally be adapted to the minimum flow.

The low-flow adjustment may only be carried out after the high-flow adjustment.

▶ Let the minimum flow circulate in the installation or ensure flow standstill.
▶ Press the Ⓐ button and keep it pressed.

▷ LED 0 is on, after approx. 5 seconds it flashes.

▶ Release the Ⓓ button.
▷ The device adopts the new value and enters operating mode.

10.3 Reset the device

▶ Press the ⬤ button for at least 15 seconds.

▷ LED 9 is on, after approx. 5 seconds it flashes.
▷ After approx. 15 seconds LEDs 0...9 flash orange.

▶ Release the ⬤ button.
▷ All settings are reset to the factory setting:

• Operating state: 5 ...100 cm/s for water
- Not locked

10.4 Lock / unlock

The unit can be locked electronically to prevent unauthorised setting.

Factory setting: not locked.

▶ Press both setting keys for 10 seconds.
▷ The display goes off.
▷ The unit is locked.

▶ For unlocking repeat the process.

11 Operation

The device displays the current flow rate on the display.

In case of power failure or interruption of the operating voltage, all settings remain.

Display		Explanation
1		current flow within the display range.
2		LED 9 flashes: current flow above the display range.
3		LED 0 flashes: current flow far below the display range.

Tab. 2: Display

12 Troubleshooting

Display	Description	Corrective measures
The LED display turns off briefly (0.6 s) when a button is pressed.	The device is permanently locked.	▸ Unlock device.
LEDs are permanently off.	Operating voltage too low (< 19 V) or failed.	▸ Ensure correct voltage supply.
LEDs flash red after flow adjustment. The device then returns to the operating mode with unchanged values.	High-flow adjustment or low-flow adjustment not successful.	▸ Check whether all installation requirements have been met.▸ Increase the distance between maximum flow and minimum flow and carry out the adjustment again.▸ ▶ Carry out the two adjustment operations again in the right sequence.

13 Maintenance, repair and disposal

Only the manufacturer is allowed to repair the unit.

▶ Ensure that the sensor tip is free from build-up:
- Check the sensor tip regularly for deposits. Determine check intervals based on the application.
- In case of soiling clean the sensor tip with a soft cloth. Stubborn build-up, such as lime, can be removed using a common vinegar cleaning agent.
▶ After use, dispose of the unit in an environmentally friendly way in accordance with the applicable national regulations.