Non-Wetted Electrode Electromagnetic Flow Sensors

FD-M series

Precautions

Precautions for Piping and Installation

Installation direction

Installing the unit with the display screen perpendicular to the ground reduces the effects of bubbles, and enables more stable operation.

Installation direction

Flow direction

The flow direction of the fluid can be switched by changing the menu settings. For more information about changing the settings, see page 7 of the instruction manual. The default flow direction is shown in the diagram below when the sensor is shipped from the factory.

Flow direction

NOTE

Install the FD-MZ **ATK(P) Series so that the fluid flows upward. If the FD-MZK Series is installed so that the fluid flows downward, bubbles may appear, making it difficult to completely fill the pipe. This can cause the values to fluctuate and errors to appear on the display.

Sensor and pipe installation

Arrange piping so that the sensor and surrounding pipes are always filled with the liquid.

Ex: FD-MZ ** AYK(P) Series

Ex: FD-MZ ** ATK(P) Series / FD-MZ ** ATK(P) Series

Arrange piping so that gas will not enter it. When the fluid contains bubbles, install the FD-MZK Series in a location where the least amount of bubbles will occur.

L = At least 5 times longer than the bore diameter of the unit
* Make sure that the straight section of pipe that is directly connected to the inlet bore of the unit is at least 5 times longer than the bore diameter. (At least 20 times longer is recommended when turbulent flow occurs)

Installing joints

Notice

When installing joints to the FD-MZK Series, you must use a tool to hold the bore on the installation side of the unit. Holding the body or the bore on the other side of the FD-MZK Series may cause damage to the unit.

Installing joints

Tightening torque for joints

Use a tightening torque that is less than the value listed in the table below.

Tightening torque for joints

NOTE

If fluid leaks from the pipes even when using the torque shown above, do not attempt to tighten the joints further. Instead, check for flaws in the threaded portion or sealing tape.

Sensor installation

Be careful not to apply excessive stress or vibration from the pipes to the FD-MZK Series.
 
Notice

An excessive stress or vibration on the FD-MZK Series may cause damage or unstable operation.

Sensor installation

Notice

Do not pipe the FD-MZK Series to correct the axis shift. Doing so applies an excessive stress to the bore.

When the axis shift cannot be corrected, use a flexible pipe or similar to connect the pipe so that the stress is not applied to the bore.
* Make sure that the straight section of the pipe that is directly connected to the inlet bore of the unit is at least 5 times longer than the bore diameter. (At least 20 times longer is recommended when turbulent flow occurs)

Secure the connected pipes to other equipment so that the pipe load is not directly applied to the FD-MZK Series. Vibration and stress can be reduced by securing the connected pipes to other
equipment. The secured positions of the pipes should be as close to the bores of the FD-MZK Series as possible.

Notice

Be careful not to cause axis shift when securing the pipes. When vibration and load (stress) cannot be reduced, secure in two or more places.

Precautions on Regulations and Standards

CE marking

KEYENCE corporation has confirmed that this product complies with the essential requirements of the applicable EC Directives, based on the following specifications. Be sure to consider the following specifications when using this product in the Member States of European Union.

EMC Directive (2004/108/EC)


• Applicable Standard
EMI: EN61326-1, ClassA
EMS: EN61326-1
• Use the FD-MZK Series with a ferrite core (OP-84289) attached to the input and output cable.

Attaching the ferrite core

Attaching the ferrite core

Attach the ferrite core at a position within 60 mm (2.36"), from the FD-MZK Series by winding the cable once as shown in the diagram.

IMPORTANT

These specifications do not provide any guarantee that the end-product with this product incorporated complies with the essential requirements of EMC Directive. The manufacturer of the end-product is solely responsible for the compliance on the end-product itself according to EMC Directive.

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