WEBTEC CTR J1939 Manual Del Usuario página 7

• The flow meter should be connected by flexible hose. The flexible hoses should be 'strain relived' (clamped). Ensure
the clamps are at least one pipe diameter wide and position close to the fittings.
• It is recommended that a 25 micron filter is installed in the hydraulic circuit prior to the flow meter.
• Consideration should be given to the effects of cavitation erosion as this could damage the unit.
• Although the unit is bi-directional greater accuracy is achieved by ensuring the flow is passed through the turbine
first then the loading valve.
• When using this type of flow block to measure low pressure systems, such as case drain leakage, it is recommended
that a relief valve or check valve is fitted to protect against excessive pressure caused by surge flows.
• Care should be taken to ensure that the flow block is installed in a position which is not subjected to excessive
pulsation as this can cause incorrect readings.
• Check IP rating before installing in wet areas. If installed in wet areas use a M12 cap to protect connector when no
cable is present. IP rating only applies if unit is fully connected.
• Before starting a test or flow ensure the load valve is fully open (fully anticlockwise) and increase the pressure slowly
• The flow block can be mounted in any orientation.
• All turbines have built-in flow straighteners so the normal recommended length of 10 Ø of straight tube can be
reduced to 8 Ø where space is limited.
• All flow meters have three additional ports in the top face of the flow meter to enable the user to connect both a
temperature and pressure sensor. There are two 1/4" BSP or #4 SAE O ring ports and one M10x1 port. As standard
one 1/4" BSP or #4 SAE is fitted with a test point (M16x2) and both other ports are blanked. See model table for
more details and ports configuration.
• For heavy-duty applications, for example installation close to a piston pump or advice on installation please consult
the sales office.
• The internal burst discs are to protect the tester not the hydraulic installation. Always ensure the appropriate relief
devices are fitted to protect the installation.
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