Flow measurement Measuring principle Ultrasonic volumetric flow measurement
Measuring accuracy flow
±2% (of 25...100% Vnom) @ 20°C / Glycol 0%
vol.
Min. flow measurement 1% of V’nom
Safety
Protection class IEC/EN III Safety Extra-Low Voltage (SELV)
Degree of protection IEC/EN IP54
EMC CE according to 2014/30/EU
Mode of operation Type 1
Rated impulse voltage supply / control 0.8 kV
Control pollution degree 3
Ambient temperature -30...50°C
Storage temperature -20...80°C
Ambient humidity Max. 95% r.H., non-condensing
Materials
Flow measuring pipe EN-GJL-250 (GG 25), with protective paint
Closing element stainless steel AISI 316
Stem seal EPDM
Ball seat PTFE, O-ring Viton
Safety notes
• This device has been designed for use in stationary heating, ventilation and air
conditioning systems and must not be used outside the specified field of application,
especially in aircraft or in any other airborne means of transport.
• Outdoor application: only possible in case that no (sea)water, snow, ice, insolation
or aggressive gases interfere directly with the actuator and that is ensured that the
ambient conditions remain at any time within the thresholds according to the data
sheet.
• Only authorised specialists may carry out installation. All applicable legal or
institutional installation regulations must be complied during installation.
• The connection between the control valve and the measuring tube should not be
separated.
• The device contains electrical and electronic components and must not be disposed
of as household refuse. All locally valid regulations and requirements must be
observed.
Product features
Mode of operation
The final controlling device is comprised of three components: characterised control
valve (CCV), measuring pipe with volumetric flow sensor and the actuator itself.
The adjusted maximum flow (max) is assigned to the maximum positioning signal
(typically 10 V / 100%). The final controlling device can be controlled communicative
or analogue. The medium is detected by the sensor in the measuring pipe and is
applied as the flow value. The measured value is balanced with the setpoint. The
actuator corrects the deviation by changing the valve position. The angle of rotation α
varies according to the differential pressure through the final controlling element (see
volumetric flow curves).
Flow characteristic
Flow rate curves
∆p
1
< ∆p
2
< ∆p
3
∆p
3
∆p
2
∆p
1
EP..F+MP
Electr. 2-way PI-CCV EPIV, Flange, PN 16
Technical data
www.belimo.com
EP..F+MP • en-ap • 2019-06-03 • subject to changes
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