SOR 107AL-N40-P1-F0A-X Low Differential Pressure Switch | SPDT

Description

Product Description

The SOR 107AL-N40-P1-F0A-X is a low differential pressure switch. SOR Controls Group makes this durable field-mounted instrument. This switch detects very small pressure differences. A large area diaphragm gives you accurate low pressure readings. The switching element is SPDT (single pole double throw). An external set point adjustment comes standard. Visual indication shows your current setting. This makes calibration very simple.

The 107AL-N40-P1-F0A-X works well for draft ranges in HVAC systems. It also suits burner management systems. The switch handles industrial air and gas services. Wetted parts are compatible with these media. Standard models fit weathertight or explosion-proof environments.

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Technical Specifications

Brand: SOR (SOR Controls Group)
Model: 107AL-N40-P1-F0A-X
Product Type: Low Differential Pressure Switch
Series: 107AL Series

Housing and Construction

• Housing material: Cast iron

• Body material: 356-T6 aluminum

• Key feature: Adjustable set point

• Application areas: Hydraulic, mechanical, ventilation systems

Pressure Ports

• Material: Plated cold-rolled steel

• Connection size: 1/8 inch NPT female

• For 1/4 inch NPT female: change F0A to F1A in model number

Wetted Materials

• Buna-N

• Brass

• Aluminum

• Cork

• Stainless steel

• Acrylic tubing

• Nylon

• Plated cold-rolled steel

Electrical Connection

• Type: 1/2 inch NPT male

• Wires: 18 inch stranded wire leads

• Wire gauge: 18 AWG

• Wire marking: Color-coded and labeled

Electrical Service (Contact Ratings)

• 5 amps at 250 V AC

• 5.0 amps at 30 V DC

• 0.5 amps at 125 V DC

Note: DC ratings apply to resistive loads only. DC ratings do not have agency approval.

Temperature Limits

• Ambient temperature: -40°C to +65°C (-40°F to 150°F)

• Process temperature: -40°C to +65°C (-40°F to 150°F)

Pressure Limits

• Maximum system pressure: 10 psig (0.69 bar)

• Vacuum protection: up to 30 inches Hg

Physical Data

• Approximate weight: 2.3 kg (5 lb)

Electrical Housing Features

The 107AL-N40-P1-F0A-X has a robust electrical housing.

• Contains an explosion-proof hermetically sealed switching element

• Class I, Groups A, B, C, D

• Class II, Groups E, F, G

• Divisions 1 and 2

• Also rated as weathertight

The hermetically sealed switching element capsule holds UL Listing. It also has CSA Certification and SAA Approval. It works as an explosion-proof snap switch.

Certification and Safety

The SOR 107AL-N40-P1-F0A-X holds important safety certifications.

• Rostechnadzor (RTN) standard (certificate available on request)

• IEC 61508 safety certified (SIL)

• Suitable for non-redundant use in SIL1 and SIL2 Safety Instrumented Systems

For SIL values specific to this product, see the Safety Integrity Level Quick Guide (Form 1528).

Installation Guide

Follow these steps to install the SOR 107AL-N40-P1-F0A-X correctly.

• Turn off all power to the system before starting

• Mount the switch in a vertical position for best performance

• Connect the 1/8 inch NPT pressure ports to your process

• Use thread sealant on all pipe connections

• Connect the 18 AWG wire leads to your control circuit

• Match the color-coded wires to your wiring diagram

• Set the external adjustment knob to your desired set point

• Apply pressure and verify switch operation

Do not exceed the maximum system pressure of 10 psig. Protect the switch from vacuum below 30 inches Hg.

Adjustment and Calibration

The 107AL-N40-P1-F0A-X offers simple field adjustment.

• External set point knob needs no special tools

• Visual indication shows your current set point

• Turn the knob clockwise to increase the set point

• Turn the knob counter-clockwise to decrease the set point

• Test the switch with a known pressure source

• Re-adjust until the switch trips at your desired pressure

You can calibrate this switch without removing the housing cover.

Maintenance Tips

The SOR 107AL-N40-P1-F0A-X needs very little maintenance.

• Check the pressure ports for blockage every 6 months

• Inspect wire leads for damage or corrosion

• Verify the set point with a test pressure annually

• Replace the switch if the diaphragm fails

• Do not try to repair the sealed switching element

The hermetically sealed design prevents internal contamination.

Compatibility Notes

The 107AL-N40-P1-F0A-X works with many media. Compatible fluids and gases include air, nitrogen, and non-corrosive gases. The wetted materials limit chemical compatibility. Avoid strong acids, bases, and solvents. The switch is compatible with 11 mm Proximity Probes and other control systems.

Typical Applications

The SOR 107AL-N40-P1-F0A-X suits many low pressure applications.

• HVAC system draft pressure monitoring

• Air filter differential pressure detection

• Burner management system safety interlocks

• Clean room positive pressure control

• Exhaust fan flow verification

• Industrial oven pressure monitoring

• Dust collector filter blockage alarms

• Hydraulic reservoir vent monitoring

Diagnostics and Troubleshooting

The 107AL-N40-P1-F0A-X gives simple go/no-go output.

• Switch trips when pressure reaches set point

• No output indicates no pressure or a faulty switch

• Use a multimeter to check contact continuity

• Apply known pressure to test switch operation

• Listen for an audible click when the switch trips

For SIL2 applications, test the switch regularly. Your safety logic should monitor the switch contacts.

Package Contents

Your shipment includes the following items.

• 1 x SOR 107AL-N40-P1-F0A-X low differential pressure switch

• 1 x Installation and operation manual

• 1 x Set point adjustment tool (if needed)

No pressure tubing or fittings are included with the 107AL-N40-P1-F0A-X. No mounting bracket is included. You must buy these separately.

Warranty: 12 months from shipment date. This covers manufacturing defects only. It does not cover damage from overpressure, wrong wiring, or corrosive media.

Shipping carriers: FedEx, UPS, DHL. You choose the carrier at checkout. Tracking is provided within 24 hours.

Frequently Asked Questions (FAQ)

1. What is the warranty period for the 107AL-N40-P1-F0A-X?

We provide a 12-month warranty from the shipment date. This covers defects in materials and workmanship. It does not cover damage from overpressure or corrosive media.

2. Which shipping carriers do you use for this switch?

We ship the SOR 107AL-N40-P1-F0A-X via FedEx, UPS, or DHL. You select your preferred carrier at checkout. All shipments include tracking and basic insurance.

3. Can I use this switch for liquid pressure applications?

The 107AL-N40-P1-F0A-X works with air and gas only. Wetted materials may not suit liquids. For liquid applications, choose a SOR switch with liquid-compatible wetted parts.

4. How do I know which set point range I need?

Check your system’s normal operating pressure. The 107AL-N40-P1-F0A-X covers low differential ranges. For higher pressures, choose a different SOR model. Contact us for application help.

5. My switch does not trip at the set point. What should I check?

First, verify your pressure source is working. Second, check for blocked pressure ports. Third, test the switch with a calibrated pressure source. Fourth, examine the wire connections. If still not working, the switch may have failed.

6. Is this switch suitable for SIL2 safety applications?

Yes. The SOR 107AL-N40-P1-F0A-X is certified for non-redundant use in SIL1 and SIL2 systems. See the SIL Quick Guide for specific values.

Why Choose the SOR 107AL-N40-P1-F0A-X?

This low differential pressure switch gives you reliable detection for HVAC and filter monitoring. The SOR 107AL-N40-P1-F0A-X has a large diaphragm for accurate low pressure readings. The external set point adjustment makes calibration easy. Visual indication shows your current setting at a glance. The SPDT switching element handles 5 amps at 250V AC. The explosion-proof housing suits hazardous locations. Operating temperature ranges from -40°C to +65°C. Maximum system pressure is 10 psig. The switch weighs only 2.3 kg for easy mounting. Use this switch for draft pressure, filter blockage, and burner management.

Order the SOR 107AL-N40-P1-F0A-X today for your low differential pressure application.

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