
PF3W520-04-1T Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $260.34 | Condition is New, 1PCS NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 100.0% |
![]() | $260.35 | Condition is New, 1PCS NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 100.0% |
![]() | $260.37 | Condition is New, 1PC NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 99.0% |
![]() | $260.40 | Condition is New, 1PCS SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 99.1% |
![]() | $260.44 | Condition is New, 1PCS SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 100.0% |
![]() | $260.46 | Condition is New, 1PCS SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 100.0% |
![]() | $260.50 | Condition is New, ONE SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 100.0% |
![]() | $260.54 | Condition is New, 1PC SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 99.5% |
![]() | $260.57 | Condition is New, 1PCS NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 100.0% |
![]() | $260.59 | Condition is New, 1PCS NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 100.0% |
![]() | $260.64 | Condition is New, 1PCS SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 96.2% |
![]() | $260.67 | Condition is New, ONE NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 97.4% |
![]() | $260.70 | Condition is New, 1PCS SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 100.0% |
![]() | $260.74 | Condition is New, 1PC SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 100.0% |
![]() | $260.76 | Condition is New, ONE NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 97.5% |
![]() | $260.80 | Condition is New, 1PCS SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 96.7% |
![]() | $260.84 | Condition is New, ONE SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 100.0% |
![]() | $260.86 | Condition is New, 1PCS SMC PF3W520-04-1T Digital flow switch NEW, FREE SHIPPING | 100.0% |
![]() | $280.37 | Condition is New, ONE NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 98.4% |
![]() | $281.60 | Condition is New, QTY1 for SMC PF3W520-04-1T Digital flow switch 106, FREE SHIPPING | 100.0% |
![]() | $281.60 | Condition is New, QTY1 for SMC PF3W520-04-1T Digital flow switch 1z,k8p, FREE SHIPPING | 100.0% |
![]() | $281.60 | Condition is New, QTY1 for SMC PF3W520-04-1T Digital flow switch #lin, FREE SHIPPING | 100.0% |
![]() | $301.44 | Top Pick! Condition is New, 1PCS NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 100.0% |
![]() | $342.00 | Condition is New, ONE NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 98.2% |
![]() | $415.66 | Top Pick! Condition is New, ONE NEW SMC PF3W520-04-1T Digital flow switch, FREE SHIPPING | 97.3% |
![]() | $800.00 | Condition is New, SMC PF3W520-04-1T-R FLOW SWTCH, NEW, shipping cost = $85.00 | 100.0% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $285.95 | Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch, FREE SHIPPING | 100.0% |
![]() | $299.48 | Top Pick! Condition is Neu, 1PCS SMC PF3W520-04-1T digital flow switch NEW *mp, shipping cost = $63.92 | 100.0% |
![]() | $306.22 | Condition is Neu, 1PCS SMC PF3W520-04-1T digital flow switch NEW #jg, shipping cost = $63.92 | 99.0% |
![]() | $346.28 | Top Pick! Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW #lk, shipping cost = $63.92 | 97.8% |
![]() | $350.07 | Top Pick! Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW zx, shipping cost = $63.92 | 97.8% |
![]() | $359.72 | Top Pick! Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch #am, shipping cost = $63.92 | 100.0% |
![]() | $362.39 | Top Pick! Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch *cm, shipping cost = $63.92 | 99.1% |
![]() | $401.76 | Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW #am, shipping cost = $63.92 | 100.0% |
![]() | $403.36 | Top Pick! Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW *tn, shipping cost = $63.92 | 98.0% |
![]() | $403.50 | Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW #qo, shipping cost = $63.92 | 100.0% |
![]() | $403.69 | Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW *mz, shipping cost = $63.92 | 100.0% |
![]() | $404.85 | Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW *nl, shipping cost = $63.92 | 97.5% |
![]() | $410.06 | Top Pick! Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW #pq, shipping cost = $63.92 | 90.6% |
![]() | $414.28 | Top Pick! Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW *wq, shipping cost = $63.92 | 96.8% |
![]() | $416.77 | Top Pick! Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW #tp, shipping cost = $63.92 | 98.9% |
![]() | $425.18 | Condition is Neu, ONE SMC PF3W520-04-1T Digital flow switch NEW *kk, shipping cost = $63.92 | 100.0% |
![]() | $436.76 | Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch #zb, shipping cost = $63.92 | 93.8% |
![]() | $439.81 | Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch *mz, shipping cost = $63.92 | 100.0% |
![]() | $442.10 | Top Pick! Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch *wq, shipping cost = $63.92 | 96.8% |
![]() | $444.79 | Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch *hh, shipping cost = $63.92 | 94.1% |
![]() | $447.05 | Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch *tm, shipping cost = $63.92 | 94.9% |
![]() | $453.55 | Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch *rr, shipping cost = $63.92 | 94.7% |
![]() | $456.20 | Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch *lh, shipping cost = $63.92 | 97.4% |
![]() | $467.42 | Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch zx, shipping cost = $63.92 | 97.8% |
![]() | $471.88 | Condition is Neu, 1PCS NEW SMC PF3W520-04-1T digital flow switch #lk, shipping cost = $63.92 | 97.8% |

The SMC PF3W520-04-1T Digital Flow Switch is a versatile and advanced fluid flow monitoring solution designed for a wide range of industrial applications. This switch is engineered to provide reliable, accurate, and efficient flow detection and measurement, making it an indispensable tool for various industries such as water treatment, HVAC, and process control.
At its core, this digital flow switch is based on SMC's renowned Magnetic Flow Technology, which utilizes the fundamental principle of Faraday's Law of Electromagnetic Induction. This technology enables the switch to measure flow rates by detecting the magnetic field generated when a conductive liquid flows through the sensing tube. The result is a highly accurate and stable flow measurement, even under varying flow conditions.
The SMC PF3W520-04-1T Digital Flow Switch features a compact, rugged design that is well-suited for harsh industrial environments. It is constructed from high-quality, corrosion-resistant materials, ensuring long-lasting performance and minimal maintenance requirements. The switch also boasts a wide operating temperature range, allowing it to function effectively in various temperature environments.
One of the most notable advantages of this digital flow switch is its advanced diagnostic capabilities. It comes equipped with an integrated microprocessor that continuously monitors the flow conditions and provides real-time diagnostics, enabling users to quickly identify and address any potential issues. Additionally, the switch offers various communication protocols, such as Modbus RTU, Modbus TCP, and NAMUR Open Communication (NOC), allowing seamless integration with various control systems and data logging platforms.
Further enhancing its versatility, the SMC PF3W520-04-1T Digital Flow Switch offers a number of configurable options, including adjustable flow rate set points, alarm thresholds, and pulse output settings. This customizability allows users to tailor the switch to their specific application requirements, ensuring optimal performance and reliability.
In summary, the SMC PF3W520-04-1T Digital Flow Switch is a high-performance, reliable, and versatile fluid flow monitoring solution that is designed to meet the demands of various industrial applications. Its advanced Magnetic Flow Technology, rugged construction, diagnostic capabilities, and configurable options make it an indispensable tool for water treatment, HVAC, and process control applications, among others.
The SMC PF3W520-04-1T Digital Flow Switch is a popular choice for automating water or other fluid applications. Here are some pros and cons to help you make an informed decision about purchasing this product.
Pros:1. High Accuracy: This digital flow switch offers high accuracy, ensuring reliable detection of flow rates within a narrow range.
2. Versatile: The SMC PF3W520-04-1T can be used with various fluids including water, glycol, oil, and more, making it a versatile option for various applications.
3. Easy to Install: This flow switch features a threaded connection and a simple wiring setup, making it easy to install and integrate into new or existing systems.
4. Durable: The SMC PF3W520-04-1T is designed to withstand harsh environments and high pressure, ensuring long-lasting performance.
5. Low Maintenance: This digital flow switch requires minimal maintenance, reducing downtime and maintenance costs.
Cons:1. Limited Flow Rate Range: The flow switch may not be suitable for applications that require a wide range of flow rates, as it is designed for specific applications with narrow flow rate requirements.
2. Cost: The SMC PF3W520-04-1T may be more expensive than some other flow switches on the market, making it a potential drawback for budget-conscious buyers.
3. Complex Setup: Although the installation process is straightforward, the setup process for this digital flow switch may be more complex compared to some other models, requiring additional configuration and calibration.
In conclusion, the SMC PF3W520-04-1T Digital Flow Switch offers high accuracy, versatility, ease of installation, durability, and low maintenance, making it an excellent choice for applications with specific flow rate requirements. However, its limited flow rate range, higher cost, and complex setup process may be drawbacks for some buyers. Ultimately, the decision to purchase this flow switch depends on the specific requirements of your application and your budget. If the advantages outweigh the disadvantages for your application, then the SMC PF3W520-04-1T Digital Flow Switch may be a worthwhile investment.
Recommendation:If you require a reliable and accurate flow switch for a specific application with narrow flow rate requirements, the SMC PF3W520-04-1T Digital Flow Switch is a great option to consider. Its versatility, durability, low maintenance, and easy installation make it a solid choice for water and other fluid applications. However, if you need a wider flow rate range or have a limited budget, you may want to explore other options available in the market.
Details:
specifications indusswitch:
- brand: Smc
- mpn: Pf3w520-04-1t
- part type: Flow Switch
seller indusswitch:
- # reviews: 67
- rating: 93.4%
- city: perth amboy, new jersey
returns indusswitch:
- method: money back
- time: 30 days
- policy: returns accepted
- paid by: buyer
shipping indusswitch:
- transit: 7-13 days
- service: standard
- class: standard
- type: fixed
general indusswitch:
- category: Business & Industrial > Electrical Equipment Supplies > Pressure Switches
offer indusswitch:
- options: ship-to-home
- prices: $260.34–$800.00
- item condition:
- New
- Neu
- availability: in stock
- in stock #: 5
- best offers: true
- sold #: 18
- started: november 22, 2025
payments indusswitch:
- other
- wallet: paypal
- credit card: diners-club
Also Purchased:
- ISE40-W1-62L-M: PRESSURE SWITCH, Smc
- IS10-N01: PRESSURE SWITCH, Smc
- D-M9B: BOX, Smc
- 220-030: PRESSURE CONTROL ROBOT, Smc
- ISE40A-N01-Y-P-X531: PRESSURE SWITCH, Smc
- ZSE30A-01-A: VACUUM SWITCH, Smc
- A-375-0000040: SWITCH, Smc
- PFMB7102-N04-FW-R: DISPLAY FLOW SWITCH, Smc
- PF2A710-F02-67N: AIR FLOW SWITCH, Smc
- ISE30A-01-N-L: PRESSURE SWITCH, Smc
- D-M9PWVSDPC: SWITCH CONNECTOR METER, Smc













































