Product Description
Bronkhorst OTB-012F Mass Flow Meter/Controller
The Bronkhorst OTB-012F is a high-precision Mass Flow Meter/Controller from the renowned LOW-ΔP-FLOW series, engineered for applications requiring minimal pressure drop. This specific unit is expertly calibrated for Ammonia (NH3) gas, offering a precise flow control range up to 1.5 ln/min. Manufactured in Ruurlo, Holland, it exemplifies quality and reliability, having undergone rigorous 15 bar pressure testing and helium leak testing. Integration into industrial control systems is seamless thanks to its built-in PROFIBUS interface, complemented by a versatile 4-20 mA sourcing analog output signal. Ideal for demanding process control environments, this device ensures accurate and stable gas flow management.
Technical Specifications:
- Model: OTB-012F
- Series: LOW-ΔP-FLOW
- Flow Range: 1.5 ln/min
- Calibrated Medium: Ammonia (NH3)
- Digital Interface: PROFIBUS
- Analog Output: 4-20 mA (sourcing)
- Max Pressure: 15 bar (Pressure Tested)

Bronkhorst OTB-012F Mass Flow Meter/Controller
Discover the Bronkhorst OTB-012F, a LOW-ΔP-FLOW series mass flow meter and controller calibrated for 1.5 ln/min of Ammonia (NH3). Features a PROFIBUS interface and 4-20 mA output for precise industrial process control.









