E+E Elektronik EE771 Series - Maintenance; Removal of the Sensing Probe of the Flow Meter; Cleaning of the Sensor of the Flow Meter; Replacement Parts; Accessories

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7. MAINTENANCE
Regular cleaning of the sensor is necessary is used in applications with wet or filthy gases. Cleaning of the sensor
is necessary prior to calibration or evaluation.
7.1. Removal of the sensing probe of the flow meter
•
Shut off the measurement valve with shut-off function
(see page 11).
• Turn off the power supply, remove the cover and disconnect the
power wires on the screw terminal.
• Loose the retainer nut and pull the sensor probe from the meas-
urement section.
• Operation without the flow meter installed page 11.
7.2. Cleaning of the sensor of the flow meter
Do not use an abrasive cleaning agent, an organic solvent containing halogen or acetone.
• Clean the head of the sensor probe by carefully swirling in warm water of isopropyl alcohol. It is recom-
mended to use isopropyl alcohol if the pollution is crease or oil.
The sensor should not be touch by fingers or solid objects like screwdrivers or brushes!
• Leave the sensor to dry in ambient air.
8. REPLACEMENT PARTS / ACCESSORIES
8.1. Order Code Replacement Sensor
EE771-R-
Hardware Configuration
Model compact ri-le direction od flow right to left A
compact le-ri
direction od flow left to right B
remote probe C
Working range low
(0,5...100 Nm/s) or (100...19685 ft/min) L1
high
(0,5...200 Nm/s) or (100...39370 ft/min) H1
Measuring pipe - DN15 N015
diameter DN20 N020
DN25 N025
DN32 N032
DN40 N040
DN50 N050
Mounting Measurment ball valve K
Plug
1)
cable gland A
1 plug for power supply and outputs Q
1)
only for model A and B
Never remove the flow-
meter while the measure-
ment ball valve is open.
That is extremely danger-
ous!