
Sono 3500CT
The SONO3500CT is an ultrasonic flow meter especially designed for heating, cooling or combined heating/cooling application in local and district energy systems. In combination with INFOCAL 9 it becomes energy meter for heating or cooling. The SONO 3500CT has been approved according to MID class 2. The approved flow meter consists of a flow sensor pipe, 4 transducers with cables and a transmitter with LCD display.
Features and benefits
- Ultrasonic 2-path flow sensor secures measurement and optimum accuracy
- 115 / 230 V mains-powered with back-up battery as standard version in case of mains power failure
- Optional battery-powered version (up to 6 years lifetime)
- Fast measuring frequency 15 Hz / 0.5 Hz (230 V AC / Battery)
- Compact (standard) or remote mounting
- No pressure drop
- Long-term stability
Large size flow meter for commercial applications
The sensor is MID Class II certified.
- For high and very high temperatures applications
- Remote version for very high temperature applications enhances the meter lifetime and lowers replacement costs
- No pressure loss reduces pump power
- and energy used for circulation
Technical data
- Size | Flow: DN100 – DN1200 | Qp 60 - 9000 m3/h
- Temperature | Pressure: Compact: 2-120°C / Remote: 2-200°C | PN16/25/40
- Types: Flow meter (heat, cool and combined). Compact or remote version
- Approvals: MID class II B+D (heating)
- Flow sensor cable length: 5.0m | 10.0m | 20.0m | 30.0m
- Flow measurement: Bi-directional
- Protection class: IP65
- Communication: 2 Pulse outputs
- Optical interface: IRDA with Modbus RTU protocol
- 115 / 230 V AC with 3.6V single backup battery
- 3.6V battery with dual 3.6V
- backup battery
Product types shown: 1

Sono 3500CT
The SONO3500CT is an ultrasonic flow meter especially designed for heating, cooling or combined heating/cooling application in local and district energy systems. In combination with INFOCAL 9 it becomes energy meter for heating or cooling. The SONO 3500CT has been approved according to MID class 2. The approved flow meter consists of a flow sensor pipe, 4 transducers with cables and a transmitter with LCD display.