The M/D TOTCO 219506 is a high-precision Printed Circuit Board (PCB) designed for use in oilfield instrumentation and drilling monitoring systems. Manufactured by M/D TOTCO (a brand under NOV – National Oilwell Varco), this board is typically integrated into the Electronic Drilling Recorder (EDR) or Driller’s Display units. It is engineered to withstand the extreme environmental conditions of a drilling rig, providing accurate data acquisition and processing for critical drilling parameters such as Weight on Bit (WOB), Torque, RPM, and Pump Pressure.

Technical Specifications and Datasheet

• Model Number: 219506
• Manufacturer: M/D TOTCO (National Oilwell Varco)
• Board Type: Instrumentation / Signal Processing PCB
• Input Signal Type: Analog and Digital (Sensor-dependent)
• Power Supply: 12V DC / 24V DC (Standard rig power)
• Dimensions: 14.8 cm x 10.2 cm x 2.1 cm
• Weight: 0.32 kg
• Country of Origin: USA
• Environmental Rating: Industrial-grade components for high vibration and wide temperature fluctuations

 

Application Fields

The 219506 board is a core component in specialized oil and gas equipment, including:

• Drilling Monitoring Systems: Serving as the logic interface for the M/D TOTCO 2000 series or similar EDR platforms.
• Torque and Tension Measuring: Processing signals from mud pump sensors and rotary table torque sensors.
• Well Logging Support: Assisting in the acquisition of real-time surface data during drilling operations.
• Offshore and Onshore Rigs: Deployed in mast-mounted or doghouse-mounted instrumentation cabinets globally.

 

Product Instructions

Before handling the 219506 PCB, ensure the instrumentation console is fully powered down and locked out. Because rig environments are prone to electrical noise and static, the use of an anti-static bag and wrist strap is highly recommended during the swap. The board is usually secured via nylon standoffs or a card guide; ensure the multi-pin edge connectors are clean and free of drilling mud or oil before insertion. Once installed, the board may require recalibration through the rig’s central monitoring software to ensure the sensor offsets match the new hardware’s signal characteristics.

 

Q&A: Frequently Asked Questions

Q: Can this board be used with generic sensors? A: While the 219506 is designed for M/D TOTCO systems, it can often interface with standard 4-20mA or 0-5V sensors. However, proprietary communication protocols may limit full functionality if used with non-NOV hardware.

Q: What is the most common cause of failure for this PCB? A: Vibration and moisture are the primary failure drivers. Despite conformal coatings, the high-vibration environment of a drilling floor can eventually lead to solder joint fatigue or connector oxidation.

Q: Does this board support WITS (Wellsite Information Transfer Specification)? A: The board acts as a data gatherer; the transmission of WITS data is usually handled by the higher-level CPU or communication module that this PCB feeds into.

 

Related Industry News

In the current push for “Digital Rig” technology, legacy boards like the M/D TOTCO 219506 are being integrated into larger IoT (Internet of Things) frameworks. NOV has recently been focusing on software updates that allow these analog-heavy boards to feed data into cloud-based analytics platforms. This allows operators to monitor drilling efficiency from remote offices in real-time. Despite the move toward wireless sensors, the reliability of wired PCBs like the 219506 remains the industry standard for safety-critical “Real-Time Rig Monitoring,” ensuring that driller displays remain functional even if wireless networks fail.

 

Similar Model Recommendations

• 219506-001 – Alternative Revision Board
• 210842 – M/D TOTCO Analog Input Board
• 212503 – Signal Conditioner Module
• 219507 – Related Power Distribution PCB
• 220104 – Driller’s Console Interface Board