Honeywell’s Models 435/437 Wing Union/Hammer Union Pressure Sensors are rugged devices designed for use with Weco® 1502 fittings for both offshore and land-based oil and gas applications.
Available in two accuracy levels (±0.1 %FSS BFSL or ±0.2 %FSS BFSL), Models 435/437 are typically used in demanding applications such as well stimulation and circulation systems. The higher accuracy option (available on Model 435 only) at ±0.1 % full scale provides more confidence in the actual measured pressure value, particularly for smaller changes in pressure, allowing drilling operation adjustments as needed.
Models 435/437 are constructed as an all-welded, stainless steel assembly with the sensor diaphragm and wing union fitting machined as one part. This helps provide hermetic integrity, which reduces the chance of media leakage vs. multipiece parts, and increases reliability. The isolated pressure sensing diaphragm minimizes zero-shift during hammer up and eliminates long-term signal drift in the field. The Weco® 1502 (50,8 mm [2 in]) Wing Union-compatible fittings are machined of Inconel® X-750, which provides additional durability with highly abrasive and corrosive media, while the Honeywell proprietary stainless steel electrical connection provides enhanced secondary pressure containment.
Each sensor undergoes special assembly processes to survive high shock and vibration for more reliable performance in the field.
High accuracy ±0.1 %FSS BFSL (Model 435); standard accuracy ±0.2 %FSS BFSL (Models 435/437) (see Table 1) • All-welded one-piece, hermetically sealed, stainless-steel construction • Standard aperture (Model 435) and wide aperture (Model 437) pressure ports available to support media blends with high viscosities • Inconel® X-750 wetted parts provide additional durability with abrasive or corrosive media • Multiple electrical connectors supported • High accuracy shunt calibration option allows users the ability to validate the offset signal in the field, ensuring the sensor is actively plugged into the system; one-wire and two-wire options available (see Table 3 for additional information) • Protective cage option provides extra electrical connection protection and increases durability • RFI/EMI protected • Intrinsically safe: CFMUS/ATEX/IEC Ex certification • CE approved
Potential Applications
• Acidizing
• Choke manifold
• Fracturing and cementing
• Mud pumps / mud logging
• New well development and extraction
• Oil and gas drilling
• Service and cement trucks
• Standpipe
• Stimulation
• Well head measurement
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