Wing union pressure transducers. Wide aperture. 0 psi to 20,000 psi. ±0.2 % full-scale accuracy. Protective cage option.
Honeywell 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. multi-piece 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.
Value to Customers
Durable: Weco® Wing Union-compatible fittings are machined of Inconel® X-750, or optional NACE-compliant Inconel® 718, allowing for use with abrasive and corrosive media. Protective cage option provides electrical connection protection.
Reliable: All-welded, stainless steel assembly, shock/vibration ratings, and isolated pressure sensing diaphragm increase reliability.
Accurate: High accuracy option provides confidence in the actual measured pressure value, particularly for smaller changes in pressure, allowing drilling operation adjustments as needed.
Availability and service: Global manufacturing and support allow Honeywell to quickly provide customized products, helping customers meet project timelines.
Differentiators
High or standard accuracy allow ability to obtain tighter system requirements and lower error bands than comparable competitive models
Shunt calibration option enhances configurability and flexibility: 1-wire shunt calibration is achievable with a single barrier application, helping to minimize installation costs
IEC Ex approval allows for use in hazardous areas, in Asia-Pacific and EMEA, and by the U.S. Coast Guard
Protective cage option
Welded construction
| TABLE 1. PERFORMANCE SPECIFICATIONS |
| Characteristic | Parameter |
| Pressure ranges (Models 435/437) | 0 psi to 5000 psi; 0 psi to 6000 psi; 0 psi to 10000 psi; 0 psi to 15000 psi; 0 psi to 20000 |
| psi2; 0 bar to 350 bar; 0 bar to 400 bar; 0 bar to 700 bar; 0 bar to 1000 bar; 0 bar to 1350 bar2 |
| Pressure ranges (Model 434) | 0 psi to 5000 psi; 0 psi to 6000 psi; 0 psi to 10000 psi; 0 psi to 15000 psi; 0 psi to 20000 psi; |
| 0 bar to 350 bar; 0 bar to 400 bar; 0 bar to 700 bar; 0 bar to 1000 bar; 0 bar to 1350 bar |
| Accuracy1 | High accuracy: ±0.1 %FSS (Model 435)3 |
| Standard accuracy: ±0.2 %FSS (Model 434/Model 435/Model 437) |
| Calibration | Standard 5-point calibration: 0 %, 50 %, and 100 % of full scale Special 10 point and 20 point calibration options available |
| Output | 4 mA to 20 mA, two-wire |
| Resolution | Infinite |
| TABLE 2. ENVIRONMENTAL SPECIFICATIONS |
| Characteristic | Parameter |
| Temperature, operating | -40°C to 125°C [-40°F to 257°F] |
| Temperature, compensating | -40°C to 85°C [-40°F to 185°F] |
| Temperature effect, zero | <±0.018 %FSS/°C [0.01 %FSS/°F] |
| Temperature effect, span | <±0.018 % reading/°C [0.01 % reading/°F] |
| Temperature effect, sealing | IP68 / NEMA 6P |
| TABLE 3. MECHANICAL SPECIFICATIONS |
| Characteristic | Parameter |
| Media | Corrosive and abrasive service, Inconel® X-750 or NACE-compliant Inconel® 718 |
| Overload, safe | 150 % rated full scale pressure or limit of Weco® 1502 fitting |
| Overload, burst | 250 % rated full scale pressure or limit of Weco® 1502 fitting |
| Pressure port | Weco® 1502, 2002, and 2202 wing union, 51 mm [2 in] pipe, male sub end4 |
| Wetted parts material | Inconel® X-750, Inconel® 718 |
| Weight (approx.) | 4.85 lb [2.2 kg] |
| Housing material | 316L stainless steel (with laser engraved labels) |
| Protective cage (optional) | 316L stainless steel |
| TABLE 4. ELECTRICAL SPECIFICATIONS |
| Characteristic | Parameter |
| Supply voltage | 9 Vdc to 28 Vdc |
| Output signal | 4 mA to 20 mA |
| Output at null pressure | 4 mA ±0.2 %FSS |
| Full Scale Span (FSS) | 16 mA ±0.5 %FSS |
| Insulation resistance | >100 MOhm at 20 Vdc |
| Max. loop resistance | 950 ohm @ 28 V decreasing linearly to 0 ohm @ 9 V |
| Circuit protection | Reverse polarity protection of supply leads |
| RFI/EMI protection | Noise immunity up to 2.7 GHz |
| Frequency response | 2500 Hz |
| Zero and span adjustment | Consult factory for more information. |
| MS series compatible 4-pin (32A-14S-2P-10-M2); Bendix PT, 6-pin (PTIH-10-6P); |
| Jupiter M and TP Series 4-pin; Jupiter M and TP Series 7-pin; Rota B-Series 4-pin |
| Electrical termination |
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| Shunt calibration wiring options | None / One-wire / Two-wire |
| Shunt calibration signal range | 100 %FSS |
| Shunt calibration accuracy | <±0.2 %FSS |
| TABLE 5. INTRINSICALLY SAFE APPROVALS |
| Agency | Approvals |
| Class 1, Div 1, Groups A, B, C, D |
| cFMus | Class 1, Zone 0, AEx / Ex ia IIC T4/T5 Ga (T4 at Ta≤85˚C, T5 at Ta≤40˚C); Install per 008-0691-00 |
| ATEX | II 1 G Ex ia IIC T4/T5 Ga (T4 at Ta≤85˚C, T5 at Ta≤40˚C) |
| IEC Ex | Ex ia IIC T4/T5 Ga (T4 at Ta≤85˚C, T5 at Ta≤40˚C) |
| UKCA | II 1 G Ex ia IIC T4/T5 Ga |
| Ta = -40°C to 40°C (T5), -40°C to 85°C (T4) (Pending Approval) |
| TABLE 6. ORDER GUIDE (SAMPLE LISTINGS) |
| Order Code | Description |
| BP437DR,6,1AC,2AK,6BF, 7AE,10E | Model 437, 5000 psi, ±0.2 %FSS accuracy, -40°C to 85°C [-40°F to 185°F] temperature compensation, 4 mA to 20 mA two-wire intrinsically safe, no shunt calibration, Jupiter M series 4-pin connector, Inconel® X-750 wetted diaphragm |
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Honeywell Model 437 Precision Pressure Sensor with 9 Vdc to 28 Vdc Supply Voltage Stainless Steel Assembly and Inconel X-750 Wetted Diaphragm（Part Images
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