58P5 58P Foxboro Series Pneumatic Controller
Manufacturer: Foxboro
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Part Number: 58P5
Condition：New with Original Package
Product Type: Pneumatic Controllers
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Foxboro 58P5 58P Series Pneumatic Controller
The Foxboro 58P5, also cataloged as the 58P Pneumatic Controller, operates as a dedicated hardware component for proportional, integral, and derivative process variable regulation within pneumatic instrument loops. The device processes standard 3-15 psi pneumatic signals to execute mechanical balance and nozzle-flapper feedback control for pressure, temperature, flow, and level loops.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 58P5 |
| Brand | Foxboro |
| Origin | USA |
| Weight | 3.5 lbs |
| Dimensions | Standard 58P series enclosure dimensions (mounting-dependent) |
| Operating Temp | -40 to +85 deg C |
| Power Consumption | None (pneumatic supply driven, 20-100 kPa / 3-15 psi operating pressure range) |
| Series | Foxboro 58P Pneumatic Controllers |
| Controller Type | Pneumatic PID Controller |
| Input Signal | 3-15 psi pneumatic |
| Output Signal | 3-15 psi pneumatic |
| Control Actions | Proportional + Reset (Integral) + Derivative (PID) |
| Proportional Band | Adjustable, 4-400% |
| Reset (Integral) | Adjustable (standard and fast action) |
| Derivative Time | Adjustable, 0.05-50 minutes |
| Accuracy | +/-0.25% of span |
| Operating Humidity | 5% to 95% RH non-condensing |
| Mounting Options | Integral with 54 Series recorder, surface, rack, or 2 in pipe mount |
4-20 mA HART Loop Protocol and Pneumatic Signal Integration
The 58P5 pneumatic mechanism executes pure mechanical signal comparison using internal bellows and balance linkages to eliminate electrical interference in field environments. When integrated alongside electronic plant assets, the unit interfaces via standard I/P (current-to-pressure) converters, translating 4-20 mA HART loop protocol command signals directly into proportional 3-15 psi pneumatic output actions.
Frequently Asked Questions
Q: How are proportional, integral, and derivative parameters adjusted on the 58P5 hardware?
A: Parameter settings are adjusted directly on the controller chassis using mechanical needle valves and internal balance levers, setting the proportional band (4-400%), reset rate, and derivative time (0.05-50 minutes).
Q: What mounting configurations are supported for physical installation?
A: The chassis mounts integrally onto a Foxboro 54 Series recorder, or attaches independently to flat surfaces, control racks, or standard 2 in pipe structures via dedicated mounting brackets.
Q: Does the 58P5 require external electrical power for operation?
A: No, the unit functions as a fully pneumatic balance mechanism powered strictly by regulated instrument air supply within the standard 20-100 kPa (3-15 psi) range.
Field Installation Guidelines
Mount the 58P5 controller securely to a rigid 2 in pipe, control rack, or surface structure to minimize mechanical vibration. When installing integrally with a 54 Series recorder, verify alignment of all mounting screws and mechanical linkages before securing fasteners.
Connect clean, dry instrument air lines to the supply, input, and output ports using standard NPT pneumatic fittings. Engage male threads with a minimum of 5 full turns of thread engagement, applying PTFE tape to male threads only to prevent sealant contamination inside internal nozzle-flapper orifices. Perform leak checks on all 3-15 psi signal lines prior to commissioning loop control.