TEKMAR DOHRMANN 8762-091 Printed Circuit Board Rigid Vdc Pcb FR-4

( Brand: Tekmar Dohrmann ), ( Manufacturer Part Number: 8762-091 ), ( Part Type: Circuit Board ), ( Mounting Style: Pcb Mount ), ( Pcb Type: Rigid Pcb ), ( Operating Voltage: 15 Vdc ), ( Item Height: 1.6 Mm ), ( Material: Fr-4 ), ( Item Length: 45.72 Mm ), ( Item Width: 31.75 Mm )

Review TEKMAR DOHRMANN Assorted Printed Circuit Board Lot Rigid Fr-4 Vdc Pcb

The **Tekmar Dohrmann 8762-091 Printed Circuit Board (PCB)** is a high-performance, rigid FR-4 epoxy glass laminate circuit board meticulously engineered for precision and reliability in industrial and analytical instrumentation applications. Designed specifically for the Dohrmann line of dissolved oxygen and water quality analyzers, this PCB serves as the critical backbone for signal processing, sensor interfacing, and control logic within these sophisticated analytical systems. Constructed from **FR-4 grade material**, a flame-retardant composite known for its exceptional mechanical strength, thermal stability, and electrical insulation properties, this board ensures long-term durability even in demanding environments where exposure to moisture, temperature fluctuations, or mechanical stress may occur. The **15 VDC** operating voltage rating underscores its compatibility with low-power control circuits while maintaining robust performance, making it ideal for integration into portable or bench-top analytical instruments where efficiency and reliability are paramount.

The **8762-091 PCB** features a **customized layout** optimized for the Dohrmann 876x series of analyzers, incorporating precise vias, high-density copper traces, and strategically placed mounting holes to facilitate seamless assembly and connectivity with sensors, displays, and communication modules. Its rigid construction minimizes warping or flexing, which is essential for maintaining consistent electrical performance and signal integrity over extended operational periods. The board s design likely includes **dedicated zones for analog signal conditioning**, digital signal processing, and power regulation, ensuring that dissolved oxygen measurements, conductivity readings, or other water quality parameters are accurately captured and transmitted with minimal noise or drift. Additionally, the PCB may incorporate **surface-mount technology (SMT) components** alongside through-hole elements, allowing for compact yet robust assembly while accommodating high-speed data acquisition and processing requirements.

Beyond its technical specifications, the **Tekmar Dohrmann 8762-091 PCB** embodies the legacy of precision engineering characteristic of the Dohrmann brand, which has long been synonymous with high-accuracy water quality instrumentation. Whether deployed in laboratory settings, environmental monitoring stations, or industrial process control systems, this circuit board plays a pivotal role in ensuring the reliability of dissolved oxygen and other critical water quality measurements. Its compatibility with **industrial-grade connectors** and modular design further enhances its versatility, allowing for easy integration into existing analytical workflows or custom instrumentation projects. For engineers, technicians, or operators maintaining or upgrading Dohrmann analyzers, this PCB represents a foundational component that balances performance, durability, and adaptability essential traits for instruments that demand unwavering precision in their measurements.

### **Pros and Cons of buying a Tekmar Dohrmann 8762-091 Printed Circuit Board (FR-4, 15V DC)**

1. **Compatibility and Reliability** The Tekmar Dohrmann 8762-091 is a well-documented replacement part for the Dohrmann Titrator 8762, a widely used analytical instrument in laboratories. Since it is an original or authorized replacement, it is designed to fit seamlessly with the existing system, reducing the risk of compatibility issues.

2. **High-Quality FR-4 Material** FR-4 is a standard, flame-retardant epoxy fiberglass laminate commonly used in PCB manufacturing due to its durability, stability, and resistance to heat and chemicals. This ensures the board can withstand typical laboratory conditions without degradation.

3. **15V DC Voltage Rating** The board is rated for 15V DC, which is sufficient for most control and signal processing applications in titrators. This rating suggests it is built for stable operation without overheating or failure under normal use.

4. **Potential Cost Savings** Purchasing a replacement PCB may be more economical than buying a new titrator, especially if the rest of the instrument is still functional. This can extend the lifespan of the equipment without a full replacement.

5. **Ease of Repair** If the original board fails, replacing it with a known-good unit can restore functionality quickly, minimizing downtime in a laboratory setting.

6. **Availability of Technical Support** Since Tekmar Dohrmann is a recognized brand, there may be resources, manuals, or customer support available to assist with installation, troubleshooting, or further repairs.

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1. **Age of the Product** The Dohrmann Titrator 8762 is an older model, and parts like PCBs may no longer be widely stocked by manufacturers. Sourcing the exact part could require searching through specialty suppliers, eBay, or used equipment markets, which may not guarantee authenticity or quality.

2. **Potential for Counterfeit or Low-Quality Replacements** If purchasing from an unverified seller (e.g., third-party online marketplaces), there is a risk of receiving a counterfeit or inferior PCB. This could lead to malfunctions, reduced lifespan, or voided warranties if the original equipment was still under service contract.

3. **Lack of Modern Upgrades** Older PCBs may lack modern features such as better shielding, higher component density, or compatibility with newer software or communication protocols. This could limit future upgrades or integrations with modern laboratory systems.

4. **Technical Complexity** Replacing a PCB may require soldering skills, proper desoldering tools, and familiarity with electronics. Improper handling could damage other components on the board or the surrounding circuitry.

5. **Warranty and Liability Issues** Since the original manufacturer may no longer support the Dohrmann 8762, any replacement part purchased independently will likely come without warranty. If the PCB fails shortly after installation, there may be no recourse for repairs or replacements.

6. **Environmental and Compliance Risks** Older PCBs may contain hazardous materials (e.g., lead, brominated flame retardants) that could pose disposal or regulatory challenges. Ensure compliance with local electronic waste regulations if disposing of the old board.

7. **Limited Long-Term Availability** As analytical instrumentation evolves, older models like the Dohrmann 8762 may become obsolete, making future repairs or part replacements increasingly difficult.

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Buying the Tekmar Dohrmann 8762-091 PCB can be a practical and cost-effective solution for restoring functionality to an older titrator, especially if the rest of the instrument is still in good condition. The FR-4 material and 15V DC rating provide reliability, and the part s compatibility ensures it will integrate without major issues. However, the risks of counterfeit parts, technical complexity, lack of warranty, and long-term availability must be carefully considered.

If the PCB is sourced from a reputable supplier (e.g., an authorized distributor, original equipment manufacturer, or a trusted used equipment dealer with verification), the repair can be a viable option. For laboratories with critical or high-value equipment, weighing the cost of repair against the potential downtime and risk of failure is essential.

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1. **Verify the Seller s Credibility** Purchase from a supplier with a proven track record, such as an authorized Tekmar Dohrmann distributor, a laboratory equipment repair specialist, or a well-reviewed online retailer. Avoid unverified sellers to prevent receiving counterfeit or damaged parts.

2. **Check for Authenticity** Request documentation or a certificate of authenticity if possible. Compare the PCB s markings, component layout, and quality with known genuine units (e.g., from manuals or forums like LabManager or Tekmar s support resources).

3. **Assess the Rest of the Equipment** Before committing to the repair, evaluate whether other components (e.g., sensors, pumps, or software) are still functional. If multiple parts are failing, a full replacement may be more cost-effective in the long run.

4. **Consider Professional Repair** If the laboratory lacks the expertise or tools for PCB replacement, hiring a qualified electronics technician or laboratory equipment repair service may be safer and more reliable.

5. **Explore Alternatives** If the Dohrmann 8762 is no longer supported, research modern titrators with similar functionality but better reliability, warranties, and software integration. Brands like Metrohm, Mettler Toledo, or Hach offer advanced titrators that may justify the higher upfront cost.

6. **Document the Repair** Keep records of the PCB s origin, installation date, and any troubleshooting steps taken. This can be useful for future diagnostics or warranty claims (if applicable).

In summary, the Tekmar Dohrmann 8762-091 PCB is a reasonable replacement for restoring an older titrator, provided the purchase is made carefully and the broader system is still viable. For laboratories prioritizing long-term reliability and support, upgrading to a newer model may be the safer choice.

Details:

Tekmar Dohrmann Assorted Printed Circuit Board Lot Rigid FR-4 15 VDC PCB MPN.

part #: 8762091 price

• $179.99

specifications pcbemdev:

• brand: Tekmar Dohrmann
• mpn: 8762-091
• part type: Circuit Board
• mounting style: Pcb Mount
• pcb type: Rigid Pcb
• operating voltage: 15 Vdc
• item height: 1.6 Mm
• material: Fr-4
• item length: 45.72 Mm
• item width: 31.75 Mm

offer pcbemdev:

• availability: In Stock
• quantity: 1
• started: May 28, 2026
• options: Ship-to-home
• sold: 0
• best offers: True

seller pcbemdev:

• # reviews: 420
• rating: 98.8%
• city: Springfield, Ohio

shipping pcbemdev:

• carrier: USPS
• type: Calculated
• transit: 5-11 Days
• cost: $5.62
• service: USPS Ground Advantage
• class: Standard

payments pcbemdev:

• other
• credit card: Mastercard
• wallet: Paypal

general pcbemdev:

• condition: Used
• Electronic Components Semiconductors > Circuit Boards Prototyping > Printed Circuit Boards PCBs

returns pcbemdev:

• policy: No Returns

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