UB1-032EM Senseca UB1 Flow Switch
The UB1-032EM is a mechanical paddle flow switch from the Senseca UB1 family for monitoring water flow in industrial pipework. Flow deflects a paddle supported by a metal bellows, which actuates a microswitch. The transparent cover allows visual function checks.
Key Features
- Mechanical paddle-operated microswitch
- DN 32 nominal pipe size
- Process connection: DIN 2527 DN 32 PN 16 flange
- Construction: Brass
- Water switching range: 3.0–3.5 m³/h, as listed for horizontal inward flow with decreasing flow rate
- Recommended maximum flow (Qmax): 8 m³/h
- Ingress protection: IP65
- Optional accessories/configurations may include signal lamp, double contact, M12 connector and aluminium hood; confirm availability when ordering
Technical Specifications
- Model: UB1-032EM
- Product family: Senseca UB1
- Medium: water; oils and aggressive media are available on request subject to manufacturer confirmation
- Pressure rating: PN 16 bar
- Medium temperature: -20 to +140 °C (no superheated steam)
- Ambient temperature: -20 to +70 °C
- Switching tolerance: ±15% of full-scale value
- Electrical connection: DIN 43650-A / ISO 4400 plug; optional 4-pole M12x1 connector (max. 4 A)
- Switching contact: changeover microswitch
- Electrical ratings depend on load type; datasheet lists up to 250 V AC/DC and 6 A for ohmic loads. Follow the datasheet limits for inductive loads and use suitable protective circuitry.
- Media-contact materials: Brass version; exact seal/elastomer materials vary by version
Applications
Suitable for flow monitoring and flow-proving interlocks in water lines and industrial equipment. Confirm the selected switching range and material compatibility for the intended medium and operating conditions.
Installation and Ordering Notes
- Standard installation is horizontal with flow inwards. Other positions may be possible, but mounting orientation affects the switching point and range.
- Provide a straight calming section of 10 × DN at the inlet and outlet.
- Install a filter if the medium contains dirt or particles.
- For vibration-prone installations, secure the paddle fixing as recommended by the manufacturer.
- For the flanged version, the flange seal is not included in the scope of delivery.
- Specify flow direction, medium and required switching range when ordering.
Contact Spectanet for availability, pricing and help confirming the correct UB1 flow switch configuration.

