Masoneilan 12800 Series Buoyancy Level Detection Controller Carbon Steel Stainless Steel Pneumatic Level Transmitter

The Masoneilan 12800 is a pneumatic controller that works with torque-tube displacers to measure and control level in vessels. It outputs a 3-15 psig signal to position control valves directly. It's a classic choice for plants that run pneumatic instrumentation, especially in high-pressure or hazardous areas where electric devices are avoided.

• Torque-tube displacer measurement
• Pneumatic output signal
• Adjustable proportional band & reset
• Local setpoint adjustment
• No electronics – high reliability
• Wide temperature/pressure range
• Multiple displacer options

• Range: 356 mm to 3048 mm (14" to 120")
• Max Pressure: Up to ANSI 2500 / PN 400
• Max Temperature: -196 °C to +400 °C
• Output: 3–15 psig (0.2–1.0 bar) pneumatic
• Supply Pressure: 20–100 psig
• Materials: Carbon steel, 316L SS, Hastelloy, Monel

• Boiler drum level control
• Separator level and interface
• High-pressure process vessels
• Pneumatic control systems

Q: Pneumatic only?

A: Yes – no electricity required.

Q: Interface measurement?

A: Yes – with proper displacer setup.

Email:edwardzhao@gbsxj.com

Phone/WeChat/WhatsApp:+8615000725058 

• 12400 smart electronic version
• 12800 with different ranges
• Pneumatic control valves