Danfoss RT 112 Pressure Switch for Industrial & Utility Applications
The Danfoss RT 112 is a mechanical pressure switch designed for precise monitoring and control of low-pressure industrial systems.
It is widely used in utilities, compressors, water systems, and marine applications where accurate pressure switching and long-term reliability are required.
A. Product Overview
The Danfoss RT 112 is part of the RT series of mechanical pressure switches developed for general industrial and marine use. It incorporates a pressure-controlled single-pole changeover (SPDT) contact system, enabling reliable alarm and control functions based on system pressure.
RT pressure switches are recognized for their simple mechanical construction, high accuracy, and repeatable switching performance. The RT 112 is typically selected for low-pressure applications where stable and predictable pressure control is critical for system safety and efficiency.
B. Working Principle
The RT 112 operates using a bellows-based mechanical pressure sensing element. When process pressure is applied to the pressure port, it acts on the internal bellows, moving the main spindle. This movement triggers a snap-action SPDT contact mechanism.
The contacts change state when the pressure reaches the set range value and return to their original position once the pressure crosses the set value plus or minus the mechanical differential. This mechanical operating principle ensures reliable switching without reliance on electronic components, making it suitable for harsh industrial environments.
C. Key Applications
Industrial air and gas compressors
Water supply and booster systems
Cooling water and circulation systems
Utility and auxiliary pressure control
Marine auxiliary and service systems
General industrial alarm and monitoring circuits
D. Why Industries Use This Product
Industries use the RT 112 for its accuracy, reliability, and ability to maintain stable pressure control in low-pressure systems. Improper pressure monitoring in such systems can result in pump damage, inefficient operation, leakage, or process instability.
The RT 112 helps prevent these risks by providing consistent pressure-based switching for alarms or control actions. Its proven RT-series design supports long service life, reduced maintenance requirements, and standardized use across multiple industrial installations. Availability of marine approvals and safety-oriented variants further supports its use in critical applications.
E. Suitable Buyers
Industrial OEMs and panel builders
Water and utility system integrators
Marine equipment installers
Maintenance and reliability engineers
Procurement teams sourcing standardized pressure switches
The RT 112 is commonly used as a replacement pressure switch in existing RT series installations and is widely accepted in retrofit and standardization projects.
AEO – Quick Answers
What is Danfoss RT 112?
Danfoss RT 112 is a mechanical pressure switch designed for monitoring and controlling low-pressure industrial and utility systems.
Where is Danfoss RT 112 used?
It is used in compressors, water systems, cooling circuits, utilities, marine auxiliaries, and industrial control panels.
Why is Danfoss RT 112 required in industry?
It ensures accurate pressure-based control and protection, helping prevent equipment damage and operational instability in low-pressure systems.
Who typically uses Danfoss RT 112?
OEMs, system integrators, maintenance teams, utility engineers, marine technicians, and industrial procurement professionals.
FAQ Section
Is Danfoss RT 112 suitable for low-pressure industrial applications?
Yes. The RT 112 is specifically designed for low-pressure ranges and provides accurate, repeatable switching for industrial and utility systems.
Can RT 112 be used for both alarm and control functions?
The SPDT contact system allows RT 112 to be used for alarm signaling as well as direct control of pumps, compressors, and auxiliary equipment.
Is RT 112 suitable for continuous industrial operation?
RT pressure switches are designed for long operational life and stable performance, making the RT 112 suitable for continuous-duty applications.
Can RT 112 replace older RT series pressure switches?
Yes. RT 112 is commonly used as a direct replacement in existing RT installations, provided the pressure range and application requirements match.
Does RT 112 support standardized and safety-focused installations?
RT series pressure switches support standardized designs and are available with approvals and safety features suitable for critical industrial and marine installations.