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  3. BROOKS SLA5851S1PAB1C2A1

BROOKS SLA5851S1PAB1C2A1 Flow Controller Slpm Port N2 0.093

Sla5851s1pab1c2a1 Brooks Mass Flow Controller 100 Slpm N2 0.093 Port Diameter

( Brand: Brooks ), ( Manufacturer Part Number: SLA5851S1PAB1C2A1 ), ( Part Type: Flow Controller ), ( Port Diameter: 0.093 ), ( Maximum Flow Rate: 100 Slpm ), ( Gas Media: N2 Nitrogen )

Review BROOKS Mass Flow Controller 100 Slpm N2 0.093 Port Diameter

The **Brooks SLA5851S1PAB1C2A1** is a high-performance, mass-flow controller designed for precise and reliable gas metering in laboratory, industrial, and research applications where accuracy and stability are paramount. This model belongs to the **SLA5850 Series**, renowned for its advanced thermal mass-flow sensing technology, which ensures exceptional repeatability and low drift over time. Engineered with a **0.093-inch (2.36 mm) port size**, this controller is ideal for applications requiring the delivery of gases like nitrogen (N ) with minimal pressure drop and maximum efficiency. The **SLA5850 platform** leverages Brooks proprietary **SmartFlow** technology, which combines a high-precision thermal sensor with a robust control algorithm to deliver linear flow rates across a wide operational range, typically from **0.1 to 10 standard liters per minute (SLPM)** though this can vary based on specific gas properties and system configurations. Its **digital interface** allows for seamless integration with PLCs, data acquisition systems, or standalone operation via the included **SLA5850 Controller**, which features a user-friendly LCD display for real-time monitoring, setpoint adjustments, and diagnostic feedback.

The **SLA5851S1PAB1C2A1** is constructed from durable materials, including **316 stainless steel** for the flow sensor and **PVDF (polyvinylidene fluoride) or PTFE-coated components** where applicable, ensuring compatibility with a broad spectrum of gases, including corrosive or aggressive media. Its **pneumatic design** incorporates a **pneumatic actuator** for precise flow modulation, reducing wear and extending the lifespan of internal components. The controller s **wide turndown ratio** often exceeding **100:1** allows for fine-tuned control across varying flow demands, making it versatile for applications such as **gas mixing, process control, semiconductor manufacturing, or analytical instrumentation**. Additionally, the **SLA5850 Series** is equipped with **over-pressure protection**, **flow limit alarms**, and **self-diagnostic capabilities**, enhancing safety and operational reliability in demanding environments.

For enhanced functionality, this model supports **RS-232 or USB communication protocols**, enabling remote monitoring and control via industry-standard software interfaces. The **SLA5850 Controller** also includes **user-configurable parameters**, such as flow units (SLPM, SCCM, or other), alarm thresholds, and calibration settings, allowing operators to tailor the device to specific workflows. Whether deployed in a **cleanroom, laboratory, or industrial process line**, the **Brooks SLA5851S1PAB1C2A1** delivers consistent performance with minimal maintenance requirements, making it a trusted choice for applications where precision and durability are critical. Its compact yet robust design further ensures easy installation in space-constrained setups, while its compatibility with **Brooks broader range of gas control solutions** facilitates seamless integration into larger gas delivery systems.

**Brooks SLA5851S1PAB1C2A1 Flow Controller (SLPM, N , 0.093" Port) Pros and Cons**

### **Pros**

1. **High Precision and Reliability** Brooks is a well-established manufacturer known for producing high-quality mass flow controllers (MFCs) with excellent accuracy and repeatability. This model is designed for precise gas flow regulation, making it suitable for applications requiring tight control, such as laboratory gas delivery, semiconductor manufacturing, or analytical instruments.

2. **Wide Flow Range** The SLA5851 series is capable of handling a broad range of flow rates, from very low (sub-SLPM) to higher values, depending on the gas and operating conditions. This versatility allows it to be used in multiple applications without requiring frequent recalibration or replacement.

3. **Compatibility with Nitrogen (N )** The unit is specifically designed to work with nitrogen, a common gas in industrial and laboratory settings. Brooks flow controllers are often optimized for specific gases, ensuring better performance and longevity when used with their intended media.

4. **Digital Control and Calibration** This model features digital calibration, which simplifies setup and reduces human error. The ability to program and store multiple flow setpoints makes it convenient for automated or sequential processes.

5. **Compact and Modular Design** The 0.093" port size is standard for many laboratory and industrial systems, allowing easy integration into existing setups. The compact form factor saves bench space while maintaining functionality.

6. **Durability and Longevity** Brooks controllers are built to withstand continuous use in demanding environments. The materials and construction are typically robust, reducing the risk of leaks or mechanical failure over time.

7. **Compatibility with Brooks Software** The unit can interface with Brooks proprietary software (e.g., **Brooks Mass Flow Controller Software** or **LabVIEW-compatible drivers**), enabling remote monitoring, data logging, and integration with larger control systems.

8. **Low Maintenance Requirements** Compared to mechanical flow meters, electronic MFCs like this one require minimal maintenance. Regular calibration checks are recommended, but there are no moving parts that wear out quickly.

9. **Safety Features** Brooks flow controllers often include built-in safety mechanisms, such as over-pressure protection and fail-safe modes, which help prevent system failures or gas leaks.

10. **After-Sales Support and Warranty** Brooks is part of the **Emerson Process Management** group, which provides extensive technical support, spare parts, and warranty coverage, ensuring long-term reliability.

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### **Cons**

1. **High Initial Cost** Brooks flow controllers are premium products, and this specific model may be more expensive than generic or lower-end alternatives. The cost can be a barrier for small laboratories or startups with limited budgets.

2. **Dependence on Power Supply** Being an electronic device, it requires a stable power source. Power fluctuations or outages can disrupt operation, though some models include backup battery options.

3. **Calibration Dependency** While digital calibration is convenient, it also means the user must periodically recalibrate the device to maintain accuracy. Failure to do so can lead to drift in measurements over time.

4. **Limited Gas Compatibility** Although optimized for nitrogen, this specific model may not be suitable for highly corrosive or reactive gases without additional modifications (e.g., specialized seals or materials). Always verify compatibility with the manufacturer.

5. **Learning Curve for Advanced Features** Users unfamiliar with Brooks software or digital MFCs may require training to fully utilize features like PID control, multi-point calibration, or integration with external systems.

6. **Potential for Signal Noise in High-Sensitivity Applications** In extremely sensitive applications (e.g., ultra-low flow rates in research), electronic noise or interference could affect measurement precision, though this is rare with high-quality controllers like the SLA5851.

7. **Replacement Parts Cost** While durable, if components fail (e.g., sensors, seals), replacement parts from Brooks can be costly compared to generic alternatives.

8. **Not Ideal for Extreme Environments** The unit may not be suitable for harsh conditions such as high vibration, extreme temperatures, or high humidity without additional shielding or environmental controls.

9. **Vendor Lock-In** Brooks proprietary software and calibration methods can create dependency on their ecosystem. Switching to a different manufacturer later may require re-calibration or compatibility checks.

10. **Overkill for Simple Applications** If the application only requires basic flow control (e.g., a simple gas leak test), a simpler and cheaper mechanical flow meter might suffice, making the Brooks controller unnecessary.

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### **Conclusion**

The **Brooks SLA5851S1PAB1C2A1** is a high-performance mass flow controller ideal for applications demanding **precision, reliability, and integration with digital control systems**. Its strengths lie in its **accuracy, versatility, durability, and compatibility with nitrogen**, making it a strong choice for **laboratories, semiconductor manufacturing, or industrial gas delivery systems**.

However, its **higher cost, dependency on power and calibration, and potential complexity** may not justify its purchase for **budget-conscious users or simple applications**. If the application requires **ultra-high precision, automation, or long-term stability**, this controller is an excellent investment. For **basic or cost-sensitive uses**, a lower-end MFC or mechanical flow meter might be more appropriate.

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### **Recommendation**

**Buy the Brooks SLA5851S1PAB1C2A1 if:**

- You need **high-precision flow control** for nitrogen in a laboratory, industrial, or research setting.

- Your application requires **digital calibration, automation, or integration with control software**.

- You prioritize **durability, long-term reliability, and manufacturer support**.

- The **cost is justified by the benefits** (e.g., reduced downtime, improved process control).

**Consider alternatives if:**

- Your budget is **limited**, and a lower-cost MFC (e.g., from **Alicat, Omega, or Bronkhorst**) would suffice.

- The application is **simple and does not require advanced features** like PID control or multi-point calibration.

- You are working with **gases other than nitrogen** that may require specialized seals or materials.

- **Power stability is a concern**, and backup solutions (e.g., UPS) are not feasible.

**Final Verdict:** For most **professional, high-precision gas flow applications**, the Brooks SLA5851 is a **superior choice** despite its higher cost. However, always **compare specifications, total cost of ownership, and long-term needs** before purchasing.

Details:

Brooks SLA5851S1PAB1C2A1 Mass Flow Controller 100 SLPM N2 0.093 Port Diameter.

part #: sla5851s1pab1c2a1 price

  • $105.00

specifications pneumativalv:

  • brand: Brooks
  • mpn: Sla5851s1pab1c2a1
  • part type: Flow Controller
  • port diameter: 0.093
  • maximum flow rate: 100 Slpm
  • gas media: N2 Nitrogen

returns pneumativalv:

  • policy: No Returns

shipping pneumativalv:

  • class: Standard
  • carrier: USPS
  • service: USPS Ground Advantage
  • cost: $9.81
  • transit: 4-10 Days
  • type: Calculated

general pneumativalv:

  • Pump Flow Controllers > Flow Controllers Meters > Mass Flow Controllers
  • condition: Used

offer pneumativalv:

  • started: March 24, 2026
  • sold: 0
  • options: Ship-to-home
  • quantity: 2
  • availability: In Stock
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  • city: Katy, Texas
part type: flow controller, port diameter: 0.093, maximum flow rate: 100 slpm, gas media: n2 nitrogen,
category: business & industrial > pump flow controllers > flow controllers meters > mass flow controllers, sku: 12006349980867721,
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1 offer $105.00 USD
  • Used. Offer #1 priced at $105.00 + $10.60 shipping estimate = $115.60* total. Brooks Mass Flow Controller 100 SLPM N2 0.093 Port Diameter.+$10.60 shipping

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