Fisher 4320 Wireless Position Monitor
Rp123000.00
Fisher 4320 Wireless Position Monitor
Manufacturer / Brand: Fisher (Emerson)
Type: Wireless Position Monitor / Valve Feedback Device
Description
The Fisher 4320 is a wireless position monitoring device designed to provide secure, real-time feedback of valve or actuator position in process control applications. It uses a non-contact, linkage-less magnetic Hall-effect sensor to detect valve stem movement, thus eliminating mechanical linkages and improving reliability over time.
The unit can be configured for basic monitoring of valve position, or it can integrate on/off control functionality by converting digital set points from a host to pneumatic outputs. It supports mounting on quarter-turn (rotary), sliding-stem (linear), or other actuators conforming to industry interface standards. Wireless data communications (WirelessHART) allow remote monitoring, diagnostics, and configuration.
Though the product is no longer in production, the 4320 remains supported via documentation to ensure legacy installations remain serviceable.
Key Features
Linkage-less, non-contact feedback: A magnetic Hall-effect sensor embedded in the housing senses a magnetic array mounted on the valve stem — no physical linkage between the sensor and the valve.
Wireless communications (WirelessHART / IEC 62591): 2.4 GHz DSSS radio interface with configurable burst messaging and integration into WirelessHART networks.
HART 7 support: Uses HART protocol for configuration and diagnostics via conventional tools.
On/Off Control Option: The 4320 can act as a discrete controller: it receives a digital set point and issues a pneumatic signal (open/close) to the actuator, confirming the action via position feedback.
Local user interface: Built-in LCD and two pushbuttons allow local configuration, calibration, and diagnostics.
Multiple mounting compatibility: Supports quarter-turn actuators, sliding-stem valves, and any actuator that meets IEC/NAMUR mounting standards.
Flexible power options: Uses lithium battery power modules (standard or extended life) or optional external DC power (12–28 VDC).
Configurable reporting/update rates: Position, temperature, and voltage data can be updated or reported at intervals from 1 second up to 1 hour.
Switch outputs: Two discrete on/off switches (limit or trip points) can be configured for status or alarm output.
Certifications & safety: Intrinsically safe design, suitable for hazardous area installations, with compliance to various international standards (CSA, ATEX, IECEx).
Robust environment tolerances: Wide operating temperature ranges, vibration resilience, ingress protection in housing (IP66 / IP67 / Type 4X).
Diagnostics and device variables: Publishes many internal variables (position, supply voltage, temperature, switch states, battery life, etc.) to the WirelessHART network.
Technical Specifications
Below is a summary of important performance and design specifications for the Fisher 4320:
Parameter | Specification / Range |
Mounting Types | Quarter-turn, sliding-stem (linear), other actuators compatible with IEC 60534-6-1, IEC 60534-6-2, VDI/VDE 3845, NAMUR |
Stem Travel (Linear Input) | Minimum: 2.5 mm (0.10 in) |
Shaft Rotation (Rotary Input) | Minimum: 45° |
Measurement Outputs | Analog: 0 to 100% (position) |
Position Accuracy | Standard: ±1% of span |
Pneumatic Output (for On/Off control version) | Up to 95% of supply pressure |
Supply Pressure (for pneumatic output) | Minimum: 3.1 bar (45 psig) |
Supply Medium | Clean, dry, non‐corrosive air or natural gas |
Air Consumption | At 5.5 bar (80 psig): |
Wireless Communication | 2.4 GHz DSSS, IEC 62591 (WirelessHART) |
EMC / Radio Compliance | FCC Class A (industrial) |
Operating Temperature | Monitoring Mode (battery): –40 to 85 °C |
Storage Temperature | –40 to 70 °C |
Humidity (Operating) | 10% to 95% relative humidity, non-condensing |
Electrical / Safety Classifications | CSA (C/US) Intrinsically Safe |
Housing / Protection | Type 4X, IP66 & IP67 |
Weight | Monitoring version: ~0.57 kg (1.25 lb) |
Power Modules | Lithium (non-rechargeable) |
Update / Reporting Rates | From 1 second to 1 hour (user configurable) |
Certification / Directives | ATEX, IECEx, CSA, EN EMC, RED (Radio Equipment Directive), PED, RoHS, etc. |
Altitude Rating | Up to 2,000 m (6,562 ft) |
Mechanical / Vibration Resistance | Meets or exceeds ANSI/ISA 75.13.01 (4 mm at 5 Hz, 2 g from 15–150 Hz, 1 g from 150–2000 Hz) |
