
43240 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $180.00 | Condition is New – Open box, NEW Dwyer Series 43000 Capsu-Photohelic Pressure Switch 500 PSI 43240S 0-50 PSID, shipping cost = $12.99 | 100.0% |

The Dwyer Series 43240 43000 Capsu-Photohellic Pressure Switch is a versatile and reliable solution for pressure monitoring applications. This switch is designed to operate using photoelectric principles, making it an excellent choice for applications where visibility of the process media is not an issue.
The switch is rated for a working pressure range of 0-50 psiD (0-3.5 barG), making it suitable for low to medium pressure systems. The 43240S model features a 500 psiD (34.5 barG) set pressure, which provides ample margin for pressure fluctuations in the system. This switch is also available in other pressure ranges up to 10,000 psiD (689.5 barG), making it a flexible option for a wide range of applications.
The switch housing is constructed of brass, ensuring durability and resistance to corrosion. It is also sealed to IP65 standards, providing protection against dust and water spray. This makes it an ideal choice for use in harsh environments where exposure to moisture or particulate matter is a concern.
The switch operates using a photosensitive element that detects the presence or absence of light. When the process pressure causes the diaphragm to move, it changes the position of the photosensitive element, either allowing or blocking the light beam. This, in turn, activates or deactivates the switch contact, allowing for reliable and accurate pressure monitoring.
The switch comes with a 1/4-28 NPT threaded connection, making it easy to install in a wide range of systems. It also features a normally open (NO) contact configuration, which can be used to activate an alarm or other external device when the set pressure is reached.
Overall, the Dwyer Series 43240 43000 Capsu-Photohellic Pressure Switch is a high-quality and reliable pressure monitoring solution. Its versatile design, rugged construction, and easy installation make it an excellent choice for a wide range of applications where accurate and reliable pressure monitoring is essential.
The Dwyer 43240 43000 Capsu-Photohelic Pressure Switch is a pneumatic device used to switch on or off an electrical circuit when a specific pressure is reached. Here are some pros and cons of buying this pressure switch:
Pros:1. Reliable Performance: This pressure switch is known for its reliable performance in various industries, including automotive, HVAC, and manufacturing.
2. Wide Pressure Range: It can handle a pressure range of 0-50 PSID, making it suitable for a variety of applications.
3. Easy Installation: The pressure switch comes with a pre-wired lead wire, making the installation process easier and quicker.
4. Durable Construction: The switch is made from high-quality materials, ensuring long-lasting performance and resistance to harsh environments.
5. Versatile Applications: It can be used in a wide range of applications, such as fuel systems, hydraulic systems, and cooling systems.
Cons:1. Limited Operating Temperature: The pressure switch is not recommended for use in temperatures below 32 F or above 122 F.
2. Requires Calibration: The pressure switch may require calibration to ensure accurate pressure readings.
3. Manual Reset: The pressure switch does not have an automatic reset feature. It needs to be manually reset after the pressure drops below the set point.
4. Expensive: Compared to some other pressure switches in the market, the Dwyer 43240 43000 Capsu-Photohelic Pressure Switch is relatively expensive.
Conclusion:The Dwyer 43240 43000 Capsu-Photohelic Pressure Switch is a reliable and durable device that can handle a wide range of pressure applications. However, it has some limitations, such as a limited operating temperature and manual reset feature. Additionally, it is relatively expensive compared to some other pressure switches. If you need a pressure switch for applications within the specified temperature range and can afford the cost, this switch is a good investment for its reliable performance and versatility.
Recommendation:If you are looking for a reliable and versatile pressure switch with a wide pressure range and easy installation, the Dwyer 43240 43000 Capsu-Photohelic Pressure Switch is a good option to consider. However, if you require a pressure switch with a wider operating temperature range or a lower cost, there are other options available in the market that may better suit your needs. It is essential to evaluate your specific application requirements and budget before making a purchase.
Details:
Dwyer series 43000 capsu-photohelic pressure switch,500 pig, 43240S, 0-50 psid, brand new in original factory bagging, Inc: at 117.
specifications indusswitch:
- brand: Dwyer
- mpn: 43240
- part type: Pressure Switch
- fuse type: Switch
shipping indusswitch:
- transit: 5-8 days
- service: usps ground advantage
- type: fixed
- carrier: usps
- class: standard
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Pressure Switches
offer indusswitch:
- availability: in stock
- best offers: true
- in stock #: 1
- price: $180.00
- item condition: New – Open box
- started: march 20, 2026
- options: ship-to-home
- sold #: 6
returns indusswitch:
- method: money back
- time: 30 days
- policy: returns accepted
- paid by: buyer
payments indusswitch:
- other
- wallet: paypal
- credit card: mastercard
seller indusswitch:
- # reviews: 117
- city: sterling, massachusetts
- rating: 100.0%
Also Purchased:
- DA-7031-153-9: PRESSURE SWITCH, Dwyer Instruments
- A-465: PRESSURE, Dwyer
- 1626-5: PRESSURE SWITCH, Dwyer
- 1638-1: PRESSURE SWITCH, Dwyer
- 1824-1-1-S: PRESSURE SWITCH ENCLOSURE, Dwyer
- DA-7038-153-4: CONTROL SWITCH, Dwyer Mercoid
- AP-153-37: PRESSURE CONTROL SWITCH, Dwyer
- 1823-00: PRESSURE SWITCH, Dwyer
- DA-31-2-9: PRESSURE SWITCH, Dwyer Instruments Mercoid
- 1950-00-2F: PRESSURE SWITCH, Dwyer
- 1820-1-M: AIR PRESSURE SWITCH, Dwyer
