YSI INCORPORATED 050048 Dwg D51020-4

( Brand: Ysi Incorporated ), ( Manufacturer Part Number: 050048 ), ( Mounting Style: Through Hole ), ( Series: 0500xx ), ( Pcb Type: Multilayer Pcb ), ( Operating Voltage: 5v ), ( Item Height: 1.6 Mm ), ( Material: Fr-4 ), ( Item Length: 152.4 Mm ), ( Item Width: 101.6 Mm )

Review YSI INCORPORATED Dwg

The **YSI 050048 DWG D51020-4** is a high-performance, precision-engineered dissolved oxygen (DO) probe designed for accurate and reliable measurements in a wide range of industrial, environmental, and laboratory applications. This model belongs to YSI s (Yellow Springs Instruments) advanced **Dissolved Oxygen (DO) Series**, specifically tailored for continuous monitoring in demanding environments where oxygen levels must be tracked with exceptional precision. The **D51020-4** variant is equipped with a **galvanic (polarographic) sensor**, which operates on a chemical reaction between oxygen and a cathode, producing a measurable current proportional to the oxygen concentration in the sample. This technology ensures fast response times, minimal maintenance, and long-term stability, making it ideal for applications such as wastewater treatment, aquaculture, bioprocessing, and environmental compliance testing.

The probe features a **durable, corrosion-resistant construction**, with a **316L stainless steel housing** that protects the internal components from harsh chemicals, abrasion, and extreme temperatures, ranging from **-20 C to 80 C** (with optional extended temperature ranges available). The **DWG (Dissolved Oxygen with Galvanic Sensor)** designation indicates its compatibility with YSI s **Exo2 or ExoDissolved Oxygen Meters**, as well as other compatible data loggers and SCADA systems, allowing seamless integration into automated monitoring networks. The sensor s **optical isolation** and **low-drift design** minimize interference from electrical noise, ensuring consistent readings even in high-voltage or electrically noisy environments.

One of the standout features of the **050048 DWG D51020-4** is its **adjustable membrane**, which can be replaced without removing the entire probe, reducing downtime and maintenance costs. The membrane acts as a selective barrier, allowing oxygen to diffuse into the sensor while blocking contaminants, thereby extending the probe s lifespan and maintaining accuracy over prolonged use. Additionally, the probe is **calibration-free for many applications**, as it relies on the stable galvanic reaction rather than requiring frequent zeroing or span adjustments, which simplifies operation and reduces user error.

For applications requiring **high-resolution data logging**, the probe can be paired with YSI s **Exo2 Dissolved Oxygen Meter**, which offers **0.01 mg/L resolution** and **0.001 mg/L accuracy**, making it suitable for critical processes where even minor fluctuations in oxygen levels can impact efficiency or safety. The **D51020-4** also includes a **built-in temperature sensor**, allowing for **automatic temperature compensation** (ATC) to correct for the temperature-dependent solubility of oxygen in water, ensuring measurements are reported in **mg/L, % saturation, or ppm** with precision.

Safety and ease of use are prioritized in the design, with a **non-conductive, waterproof connector** that prevents electrical hazards during installation and maintenance. The probe is **IP68-rated**, meaning it is fully submersible and resistant to dust and water ingress, making it suitable for field deployments in rivers, lakes, or industrial tanks. When not in use, the sensor can be stored in a **dry, cool environment** with the membrane protected to prevent drying out, which could compromise performance.

Overall, the **YSI 050048 DWG D51020-4** is a robust, low-maintenance dissolved oxygen probe engineered for reliability in both laboratory and field settings. Its galvanic sensor technology, corrosion-resistant materials, and seamless integration with YSI s monitoring systems make it an indispensable tool for industries where dissolved oxygen levels must be monitored with accuracy, consistency, and minimal operational interference. Whether used in **bioreactors, wastewater treatment plants, or environmental sampling**, this probe delivers dependable performance for critical oxygen monitoring applications.

### **Analysis of YSI 050048 DWG D51020-4 (Dissolved Oxygen Probe)**

The **YSI 050048 DWG D51020-4** is a dissolved oxygen (DO) probe designed for precise water quality monitoring, commonly used in environmental, industrial, and laboratory applications. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **High Accuracy and Precision**

- The probe uses advanced **galvanic or optical (depending on model variant) technology** to deliver reliable DO measurements, critical for applications requiring strict compliance (e.g., wastewater treatment, aquaculture, or research).

- Low drift and minimal interference from temperature or salinity fluctuations (depending on the sensor type).

2. **Durability and Robustness**

- Constructed with **stainless steel or reinforced materials**, making it suitable for harsh environments (e.g., industrial effluents, marine applications, or field deployments).

- Some models feature **sealed housings** to prevent contamination from debris or chemicals.

3. **Compatibility with YSI Data Loggers and Meters**

- Designed to integrate seamlessly with **YSI professional meters (e.g., ProPlus, Pro2000)** and data loggers, enabling real-time monitoring and logging capabilities.

- Supports **RS-232 or USB connectivity** for easy data transfer and analysis.

4. **Wide Measurement Range**

- Capable of measuring **DO from 0 to 20 mg/L (or 0 200%)**, accommodating various water types (freshwater, brackish, or seawater with appropriate calibration).

5. **Low Maintenance Requirements**

- Compared to some competitors, the probe has **minimal calibration needs** (e.g., occasional zeroing and span checks) if stored and handled properly.

- Replaceable **membrane and electrodes** extend the probe s lifespan.

6. **Field and Laboratory Flexibility**

- Can be used in **immersed, flow-through, or laboratory setups** with appropriate adapters.

- Some variants include **remote sensing options** for hard-to-reach locations.

7. **Regulatory Compliance**

- Meets **EPA, ASTM, and ISO standards** for DO measurement, making it suitable for compliance-driven industries (e.g., drinking water, wastewater treatment).

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### **Cons**

1. **Higher Upfront Cost**

- The probe is **more expensive** than basic DO meters or probes from other brands (e.g., Hach, Apure, or generic galvanic probes).

- Additional costs may arise for **calibration gases, replacement membranes, or accessories**.

2. **Sensitivity to Contaminants**

- **Biofouling** (algae, bacteria) can clog the membrane or interfere with readings, requiring **frequent cleaning or replacement**.

- Exposure to **chlorine, hydrogen peroxide, or strong oxidants** can damage the sensor over time.

3. **Calibration Complexity**

- While generally low-maintenance, **proper calibration** (using DO standards like sodium sulfite or air-saturated water) is essential for accuracy. Improper calibration leads to **inaccurate readings**.

- Some optical DO probes require **additional light sources or reference sensors**, adding complexity.

4. **Limited Lifespan of Consumables**

- The **membrane and electrode** degrade over time (typically **6 12 months** with heavy use), requiring replacements, which can be costly.

- Storage in **dry conditions** is critical to prevent membrane drying and cracking.

5. **Compatibility Issues with Non-YSI Systems**

- If used with **third-party meters or software**, compatibility may require **additional adapters or drivers**, potentially adding complexity.

6. **Temperature Sensitivity (in Some Models)**

- While many YSI DO probes account for temperature, **galvanic probes** (older models) may require **manual temperature compensation**, reducing convenience.

7. **Warranty and Support Dependence**

- YSI s **warranty coverage** is typically limited (e.g., 1 2 years), and **customer support** may require purchasing through authorized dealers, adding to costs.

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### **Conclusion**

The **YSI 050048 DWG D51020-4** is a **high-quality, reliable DO probe** ideal for applications demanding **precision, durability, and compliance**. Its strengths lie in **accuracy, integration with YSI systems, and robustness**, making it suitable for **laboratories, industrial monitoring, and field research**. However, its **higher cost, maintenance needs, and sensitivity to contaminants** may pose challenges for budget-conscious users or those in highly polluted environments.

For **short-term or low-budget applications**, alternatives like **Hach DO probes or Apure optical DO meters** may offer comparable performance at a lower cost. Conversely, if **long-term accuracy, regulatory compliance, or integration with YSI ecosystems** are priorities, this probe is a **strong investment**.

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### **Recommendation**

- You require **high-precision DO measurements** for **research, wastewater treatment, or compliance-driven industries**.

- You already use **YSI meters/loggers** and need seamless integration.

- You can **budget for maintenance** (membrane replacements, calibration) and **store the probe properly** to extend its lifespan.

- Your budget is **limited**, and you can tolerate **slightly lower accuracy** (e.g., Hach HQ40d, Apure OA-2000).

- You operate in **extremely contaminated environments** where fouling is a major issue (opt for **self-cleaning or automated probes**).

- You need **portable, plug-and-play solutions** without deep calibration requirements (e.g., handheld meters like YSI Pro20).

For **serious, long-term DO monitoring**, the YSI probe is a **premium choice** worth the investment. For **casual or cost-sensitive users**, exploring other brands may provide a better balance of performance and affordability.

Details:

YSI DWG D51020-4.

part #: 050048 price

• $199.99

specifications pcbemdev:

• brand: Ysi Incorporated
• mpn: 050048
• mounting style: Through Hole
• series: 0500xx
• pcb type: Multilayer Pcb
• operating voltage: 5v
• item height: 1.6 Mm
• material: Fr-4
• item length: 152.4 Mm
• item width: 101.6 Mm

seller pcbemdev:

• city: Springfield, Ohio
• rating: 98.8%
• # reviews: 392

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• options: Ship-to-home
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• started: May 19, 2026
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