Product Overview
Industrial processes have evolved from manual monitoring to automated precision control. The SOR 107AL-N40-P1-F0A-X low differential pressure switch represents this shift, offering reliable detection in demanding environments. Manufactured by SOR Controls Group, this field-mounted instrument uses a large-area diaphragm to accurately sense minute pressure differences. Its explosion-proof hermetically sealed housing ensures safe operation in hazardous locations.
Key Technical Specifications
The 107AL-N40-P1-F0A-X is built for performance and safety. Key parameters include:
- Switch Element: SPDT (Single Pole Double Throw) for versatile control.
- Electrical Ratings: 5 amps at 250 VAC; 5.0 amps at 30 VDC (resistive loads only); 0.5 amps at 125 VDC.
- Enclosure: Explosion-proof hermetically sealed, Class I, Groups A, B, C, D; Class II, Groups E, F, G; Divisions 1 & 2; also weathertight.
- Body Material: 356-T6 aluminum.
- Pressure Ports: 1/8” NPT(F) (option for 1/4” NPT(F) by changing F0A to F1A).
- Temperature Limits: Ambient and process –40 to 150°F (–40 to 65°C).
- Max System Pressure: 10 psig; vacuum protected to 30” Hg.
- Weight: Approx. 5 lb (2.3 kg).
- Wetted Materials: Buna-N, brass, aluminum, cork, stainless steel, acrylic tubing, nylon, plated cold-rolled steel.
- Electrical Connection: 1/2” NPT(M); 18” stranded wire leads, 18-AWG color-coded.
Industry Applications
This switch excels in draft ranges typical of HVAC systems and burner management. It monitors filter differential pressure, ensuring timely maintenance and preventing system overload. In hydraulic machinery, it provides low-pressure alarms to protect pumps and actuators. The hermetically sealed design also suits natural gas services where explosive atmospheres exist.
Installation and Setup Guidance
Mount the 107AL-N40-P1-F0A-X securely using the 1/8” NPT(F) pressure ports. Connect electrical leads via the 1/2” NPT(M) conduit entry. Adjust the set point using the external visual indicator for simplified calibration. Ensure process and ambient temperatures stay within –40 to 150°F. Do not exceed 10 psig system pressure.
Maintenance and Reliability
Periodically inspect the switch for signs of corrosion or damage, especially in harsh environments. Verify set point accuracy with a known pressure source. The hermetically sealed capsule protects internal contacts from moisture and contaminants, extending service life. Following manufacturer guidelines ensures reliable operation.
Selection Guide and Purchasing Advice
When ordering, confirm the required pressure port size: standard is 1/8” NPT(F); specify F1A for 1/4” NPT(F). Verify compatibility with your process media and temperature range. For SIL applications, consult the Safety Integrity Level Quick Guide (Form 1528). SpareTechPLC stocks the 107AL-N40-P1-F0A-X and can assist with availability and replacement options.
Frequently Asked Questions
Q: What is the maximum system pressure for this switch?
A: The maximum system pressure is 10 psig, and it is vacuum protected to 30” Hg.
Q: Can this switch be used in explosive environments?
A: Yes, the hermetically sealed housing is UL Listed, CSA Certified, and SAA Approved for Class I, Groups A, B, C, D; Class II, Groups E, F, G; Divisions 1 & 2.
Q: What are the electrical contact ratings?
A: The SPDT switch is rated 5 amps at 250 VAC, 5.0 amps at 30 VDC (resistive), and 0.5 amps at 125 VDC.
Q: What wetted materials are compatible?
A: Wetted parts include Buna-N, brass, aluminum, cork, stainless steel, acrylic tubing, nylon, and plated cold-rolled steel.
Q: Is this switch SIL certified?
A: Yes, SOR products are certified to IEC 61508 for non-redundant use in SIL1 and SIL2 Safety Instrumented Systems.
Please verify current lifecycle status and availability with SpareTechPLC before ordering.
