
About
- Switch adjustment ranges from vacuum through 4,600 psig
- Standard Zinc-nickel with NBR diaphragm wetted parts
- SPST or SPDT snap-action switch with solid Silver contacts
- CE compliant to suppress Radio Frequency Interference (RFI), Electromagnetic Interference (EMI) and Electrostatic Discharge (ESD)
- RoHS compliant
Featured Specifications
Switching Function
SPDT
Switch Adjustable Range
-5 to -28 inHg
Process Connection
1/4" NPT Male
Documents
Product Specifications|Switching Parameters|Temperature Ranges|Applications|Limitations Which Apply Are|Options and Accessories|Prop 65 Warnings
Product Specifications
▲| Type | Mechanical Switch |
| Series | 300 |
| Switching Function | SPDT |
| Switch Adjustable Range | -5 to -28 inHg |
| Electrical Connection | Weatherpack Tower, 3-Pin Female, Attached to 18 in. |
| Process Connection | 1/4" NPT Male |
| Weight | 0.2 lb |
| Housing material | Zinc-Nickel Plated Steel |
| Switch Type | Snap Action with Adjustable Hysteresis |
| Environmental Rating | Ingress Protection (IP67) |
| Switch Point | Field Adjustable and/or Factory Set |
| Hysteresis | Adjustable |
| Service Life | < 1,000,000 Load Cycles |
| Proof Pressure | 870 to 5,000 psig |
| Measuring Element | NBR |
| Warranty | 1 yr |
| Contact Rating |
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| Vacuum Pressure Switch Adjustable Ranges | -5 to -28 inHg |
| Process Connection Size | 1/4 in |
Switching Parameters
▲| Non-Repeatability | 2% of Full Set Point Range at 70 ºF |
| Contact Material | Solid Silver, Self-Cleaning |
Temperature Ranges
▲| Media Temperature Range ºF | -4 to 176 ºF |
| Media Temperature Range ºC | -20 to 80 ºC |
| Ambient Temperature Range ºF | -4 to 176 ºF |
| Ambient Temperature Range ºC | -20 to 80 ºC |
Applications
▲| Applications |
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Limitations Which Apply Are
▲| Limitations Which Apply Are | These units must be operated within the catalogued environmental and application parameters. Determination of failure will be made by NOSHOK, Inc.'s equipment and personnel or a certified test facility specializing in this type of evaluation. Gauge failures determined to be caused by over-range, incompatibility with environment or product media and abuse will not be considered under this warranty. NOSHOK, Inc. will, at its discretion, repair or replace the working parts of the damaged gauge without cost to the customer. In keeping with and for purposes of product and/or manufacturing process improvements, NOSHOK, Inc. reserves the right to make design changes without prior notice. |
Options and Accessories
▲| Distribution Manifolds | NOSHOK's Distribution Manifolds connect multiple instruments to one diaphragm seal, eliminating multiple connections that lead to possible leak paths. |
| Mechanical Switches Options & Accessories | Factory Adjusted Switch Point (Specify) |
| Pressure Snubbers - Piston Type |
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| Pressure Snubbers - Sintered Type |
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| Steam Syphons |
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| Swivel Adapters |
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Prop 65 Warnings
▲| Prop 65 Warnings | ⚠️ WARNING: This product can expose you to chemicals including Lead and Nickel, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov |
Applications
▲| Application |
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