Description
Neodyn 130P Series Pressure Switch / Tamper Resistant
Neodyn 130P Series Pressure Switch / Tamper Resistant for hazardous or corrosive atmospheres. For low to mid-range pressure applications. Features efficient Nega-Rate® Belleville disc spring for superior set point stability and is field adjustable using a 1/8″ Allen wrench through the port. Once adjustments are made and the switch is installed, it becomes tamper-proof.
- No moving parts except during actuation—no spring fatigue or wear.
- The set point is mostly a function of the negative rate Belleville spring—variables in snap action electrical have little effect on the set point.
- Total movement of the Belleville spring compensates for any relocation of the electrical due to case growth—consistent set point over temperature change.
- No linkage utilized—no wear which can affect accuracy.
Features
Stable Set Points – “Eliminates Constant Recalibration”
- No moving parts except during actuation—no spring fatigue or wear.
- Set point is mostly a function of the negative rate Belleville spring—variables in snap action electrical have little effect on the set point.
- Total movement of the Belleville spring compensates for any relocation of the electrical due to case growth—consistent set point over temperature change.
- No linkage utilized—no wear which can affect accuracy.
Vibration Resistant – “Eliminates Contact Chatter”
- Belleville spring does not preload the electrical prior to actuation—snap action electrical maintains its vibration resistant characteristic.
- Small mass and inherent stability of the Belleville spring resists chatter caused by vibration.
- Snap action electrical is ruggedly mounted with minimal bracketry—no spring mounted electricals or linkages.
High Over-Pressure Capability – “No Affect on Set Point Accuracy”
- Belleville spring does not contain the pressure—no affect on system or proof pressure capability.
- The pressure sensing portion bottoms out after actuation and is fully supported—pressure sensing parts are designed for high pressure conditions.
- Limited movement of spring mechanism—no overtravel of the snap action electrical due to high pressure.
High Cycle Lifer – “Millions of Cycle”
- Short stroke minimizes wear—Belleville spring mechanism is exercised less than .020″.
- Snap action of Belleville spring reduces electrical arc—prolongs contact life.
Specifications
Model Series
| Adjustable Range Number | Adjustable Set Point Range | Deadband (approximate) | Maximum Recommended System Pressure | Proof Pressure |
|---|
| Increasing | Decreasing |
|---|
| 1 | 2 to 12 | 1 to 11 | 1 | 600 | 1000 |
| 2 | 10 to 30 | 7 to 27 | 3 | 600 | 1000 |
| 3 | 30 to 50 | 25 to 45 | 5 | 600 | 1000 |
| 4 | 50 to 70 | 44 to 64 | 6 | 600 | 1000 |
| 5 | 70 to 120 | 60 to 110 | 10 | 600 | 1000 |
| 6 | 120 to 170 | 105 to 155 | 15 | 600 | 1000 |
*All values given in psig.
Standard Specification
| Model | Weather Proof (NEMA 4 and 13 | Explosion Proof Hermetically Sealed (NEMA 4X, 7, 9 and 13) |
|---|
| Electrical | Snap action electrical switch recognized by Underwriters’ Laboratories, Inc. and CSA International | Snap action electrical switch assemblies, Part Numbers 057-0770 & 057-0772 (Form C) and 057-0771 & 057-0773 (Form CC), are listed by Underwriters’ Laboratories, Inc., FM Approvals, CSA International and NCC (INMETRO). See the miscellaneous option N for additional listings. |
| Electrical Connection | 1/2 NPT male conduit connection with PVC insulated 18 AWG, 18″ long leads |
| Pressure Connection | 1/4 NPT Male |
| Ambient Temperature Range | – 40°C to + 82°C |
| Media Temperature Range | – 40°C to + 149°C *Temperature limits change with O-Ring selection |
| Adjustment | 1/8″ allen wrench through port |
| Shipping Weight | Approximately 13 ounces | Approximately 16 ounces |
