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During operation:
9. Keep this document available at the place of use.
10. Observe the safety information.
11. Operate the product in accordance with this document.
12. Operate the product in accordance with the specifications.
13. Maintain the product correctly.
14. Do not carry out any maintenance work and repairs not de-
scribed in this document without consulting the manufac-
turer first.
In cases of uncertainty:
15. Consult the nearest GEMÜ sales office.
3 Product description
3.1 Construction
Item Name Materials
1 Housing bolt
2 Display
3 Electrical connection
4 Electronic system housing DN 10–25: PSU
DN 32–50: PE-HD
5 Body (threaded spigot) DN 10–25: PSU
DN 32–50: PE-HD
6 Seals EPDM
3.2 Description
The GEMÜ 3040 is an ultrasonic flowmeter which determines
the volumetric flow of conductive and non-conductive liquids
in a contact-free manner. The flowmeter is suitable for al-
kaline, toxic and corrosive media and can also be used for DI
water. The backlit display enables the device to be pro-
grammed on-site. Empty pipe monitoring and a quantity
measuring device are integrated as standard.
3.2.1 Areas of application
The GEMÜ 3040 flowmeter is particularly suitable for measur-
ing very dynamic processes in piping. Liquids are the media
measured. It is used, for example, in the following:
– Chemical supply for controlling, logistics and monitor-
ing
– Cooling circuits, for monitoring
– Production machines for controlling and monitoring
the formulations
– Valve actuation for the continuous release of volumes
of liquids
– DI water supply
– Very dynamic processes with dosing times of less
than 1 s.
3 Product description
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