Digital Panel Meters

A digital panel meter is an industrial instrument that converts an electrical input signal into an easy-to-read numerical value. It is normally mounted into a control panel or machine enclosure.

London Electronics digital panel meters can measure and display process signals, temperature, weight, pressure, level, flow, speed, frequency, counts and other industrial measurements.

A digital process indicator converts an industrial process signal into a meaningful engineering value.

For example, a 4-20mA signal from a pressure transmitter can be scaled and displayed directly in bar, PSI or kPa. London Electronics manufactures programmable process indicators for industrial control, automation and monitoring applications.

Digital panel meters can accept a wide range of industrial input signals.

London Electronics offers panel meters for 4-20mA, 0-10V, load cell, strain gauge, thermocouple, PT100, PT1000, resistance, potentiometer and pulse inputs, allowing many different sensors and transmitters to be connected.

Yes. 4-20mA is one of the most common industrial signals used with digital panel meters.

Our 4-20mA panel meters can scale the input to display the required engineering value, including pressure, temperature, level, flow, weight or percentage.

A programmable panel meter allows the 4mA and 20mA input values to be assigned to the required display range.

For example, a pressure transmitter producing 4-20mA could be configured so that 4mA displays 0.0 bar and 20mA displays 10.0 bar.

Yes. London Electronics process panel meters can accept common industrial voltage signals including 0-10V.

The incoming voltage can be scaled so the panel meter displays the actual engineering measurement rather than simply displaying the voltage.

Yes. A suitable load cell panel meter can connect directly to strain gauge load cells.

London Electronics load cell indicators can display weight, force, tension or other measurements and can be used for weighing, batching, tank weighing, crane and industrial force measurement applications.

Yes. A digital temperature panel meter can connect directly to common industrial temperature sensors.

London Electronics temperature indicators support options including thermocouple, PT100 and PT1000 RTD sensors, allowing temperature to be displayed directly in the required units.

Yes. PT100 RTD sensors can be connected to a compatible digital temperature indicator.

Our programmable temperature panel meters can display the measured temperature and can also provide alarm or control outputs where required.

Yes. London Electronics digital temperature indicators can accept common industrial thermocouple types.

This allows a single panel-mounted display to provide a clear local temperature indication directly from the sensor.

Yes. A pressure transmitter can be connected to a digital process indicator using a compatible signal such as 4-20mA or 0-10V.

The display can then be scaled to show pressure directly in bar, PSI, kPa or another required engineering unit.

Yes. A level transmitter can be connected to a digital panel meter and scaled to show the required tank level.

The display could show litres, percentage full, metres, millimetres or another engineering value, depending on the application.

Yes. A suitable process or pulse input can be used to display flow rate.

Depending on the sensor, London Electronics panel meters can display measurements such as litres per minute, litres per hour or other required flow engineering units.

Yes. A pulse input panel meter can count signals from proximity sensors, switches, encoders and other pulse-generating devices.

Typical applications include production counting, batch counting, event counting and totalisation.

Yes. Pulse or frequency signals can be converted into speed or rate.

A London Electronics digital rate meter can display values such as RPM, metres per minute, units per hour or cycles per minute, depending on the application.

Yes. A digital totaliser can accumulate incoming pulses or process information to provide a running total.

Typical applications include flow totalisation, production counting, batch measurement and machine cycle counting.

Yes. Digital panel meters can be supplied with programmable relay outputs.

Relay outputs can operate at selected measurement levels and can be used for alarms, warning lights, sounders, PLC inputs or basic process control.

Yes. Programmable high and low alarm setpoints can be configured on suitable panel meters.

For example, a temperature display could activate a relay when the temperature becomes too high, while another relay could operate if the temperature falls below a minimum value.

Yes. Multi-colour digital panel meters can change display colour according to the measured value or alarm condition.

For example, the display could normally show green, change to amber as a limit is approached and then change to red when an alarm level is reached.

Yes. Analogue retransmission can be used to convert the measured value into a 4-20mA output.

This allows the panel meter to provide a local digital display while simultaneously sending the measurement to another PLC, recorder, controller or monitoring system.

Yes. RS485 communication can be used to connect suitable digital panel meters to PLCs, computers, data logging systems and remote displays.

This provides a digital communication method for transferring measurement data over longer distances.

Yes. Modbus communication is available on suitable digital panel meter configurations.

Modbus can allow measured values and other information to be exchanged with PLCs, industrial computers and automation systems using an established industrial communication protocol.

Yes. A digital panel meter can interface with a PLC using analogue signals, relay outputs or digital communications such as RS485/Modbus, depending on the application.

This allows the panel meter to provide a clear local display while the PLC manages the wider machine or process.

Yes. A panel meter can be used as part of a system where the same measurement is repeated on a much larger remote display.

London Electronics manufactures both digital panel meters and large-format industrial LED displays, allowing the same process value to be visible locally and from much greater viewing distances.

Yes, although the correct connection method depends on the sensor signal and equipment being used.

Options can include analogue retransmission from the panel meter, serial communications or suitable signal distribution. London Electronics can advise on the correct configuration for the application.

Digital panel meters can be supplied for AC or DC operation.

London Electronics offers models suitable for common industrial power supplies, including 24V DC control systems and mains-powered control panels.

Yes. DC-powered digital panel meters are available for use in common 24V DC industrial control systems.

This makes them particularly suitable for PLC panels, machinery and automation equipment where a 24V DC supply is already available.

Digital panel meters are available in standard industrial panel-mount formats, including popular DIN sizes.

London Electronics can help select the correct instrument based on the required panel cut-out, display size, input signal and functionality.

A 1/8 DIN panel meter is a compact industrial instrument manufactured to a commonly used standard panel format.

The standardised size makes 1/8 DIN meters particularly popular with control panel builders, machine manufacturers and industrial automation engineers.

Suitable London Electronics digital panel meters provide IP65 front-panel protection when correctly installed.

This helps protect the front of the instrument against dust and water ingress in industrial environments.

A universal input digital panel meter can accept several different sensor and process signal types rather than being dedicated to only one input.

London Electronics universal panel meters can support applications involving 4-20mA, voltage, load cell, thermocouple, RTD, resistance, potentiometer and pulse signals, providing a flexible solution for OEMs and panel builders.

Yes. A programmable digital panel meter can be scaled to display the engineering value required by the application.

This could include °C, °F, bar, PSI, kg, tonnes, litres, RPM, %, mm, metres or many other engineering units.

In many applications, yes. A digital panel meter can replace a traditional analogue needle meter while providing a precise numerical display and additional functions such as alarms, communications and analogue retransmission.

The existing input signal, panel cut-out and power supply should be checked before selecting the replacement.

Start by identifying the input signal, required display range, power supply and outputs.

For example, determine whether your input is 4-20mA, 0-10V, load cell, thermocouple, PT100, pulse or another signal. Then consider whether you need relay alarms, analogue output, RS485/Modbus communication or a remote display.

London Electronics can help specify the correct meter from your sensor details or application requirements.

London Electronics is a UK manufacturer of digital panel meters and industrial display instrumentation.

Our range includes process indicators, universal input panel meters, 4-20mA displays, load cell indicators, temperature displays, counters, rate meters and timers, with technical support available to help select and configure the correct instrument for your application.