
- Key Details
- Accuracy up to 0.25% of reading
- High-clarity LCD, or high brightness illuminated OLED display panel
- USB, RS232 or RS485 output
- Multiple output functions: linear, square-root, custom linearisation
Ultra Low Pressure Measurement
The FCO432 provides very high precision at the lowest pressures. The 11 models start with the ±50Pa measurement range and graduate through to -1bar to +10bar, each with an accuracy <0.25% of reading. The pressure cell is based on the unique Furness Controls capacitive sensor of proven reliability. A microcontroller is used to control all functions of stability, such as temperature correction and display damping.

Fully Configurable with Multiple Functions
There are two ways in which to configure the FCO432. A membrane keypad is available as an optional extra for easy, on-device field configuration. Otherwise, configuration can be carried out using the provided FCS541 utility software and internal Micro-USB connection.
By using one of these methods, the transmitter can be configured in a multitude of ways. The output is scalable as linear to differential pressure, or as a square-root function to facilitate the use of Pitot Static Tubes or other primary flow elements.
The FCO432 can be zeroed in two ways to guarantee high levels of accuracy. An externally fitted button or suitable electronic circuitry can remotely zero the device. Or there is the option to use the auto-zeroing function with an adjustable delay between 0.0 and 24.0 hours, with a 0.1 hour resolution.
- Optional membrane keypad
- Two independent trip level relays
- Output linear or square-root
- Auto-zero or remote zero button

LCD or OLED Display Options
The differential pressure transmitter comes with two display options. There is the choice between a large character, low power LCD display, which is fully compatible with 4-20mA options, or a high brightness, illuminated OLED display (this requires separate 24V power supply), enabling the device to be used for a multitude of applications. Alternatively, the device can be used blind, without a display.
Typical Use Cases
Accurate measurement and control is the key to automation across the manufacturing sector. Our pressure transmitters are used to monitor industrial processes, environmental conditions and safety parameters, ensuring your critical processes run smoothly. The FCO432 is suitable for industrial applications of control, measurement and monitoring, including:
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Clean room & glove boxes
Maintaining positive pressures to prevent dust ingress
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Incinerators, boilers and kilns
Control of combustion chamber pressures and the monitoring flue function
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Wind Tunnels
Flow measurement usiing Pitot Tubes for research in automative and aerospace
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Filtration Systems
Monitoring pressure differentials across HEPA filters in ducts, air intakes etc.
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Engine Development & Testing
Measurement of inlet manifold, exhaust and sump pressures
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Building Management
Flow control in air distribution systems