| Housing | 48 x 24 mm |
| Display | 4-digit 10 mm digit height Colour: red |
| Range displayed | -1999 to 9999 |
| Operation | front panel keyboard protection class IP65 |
| Input | 4…20mA / span 3,5…21mA |
| Analogue Output | – |
| Switch point | – |
| Interface | – |
| Power supply | – |
| Sensor supply | – |
| Software properties |
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 Datasheet
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User Manual
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| Housing | 72 x 36 mm |
| Display | 4-digit 14 mm digit height Colour: red |
| Range displayed | -1999 to 9999 |
| Operation | front panel keyboard protection class IP65 |
| Input | 4…20mA / span 3,5…21mA |
| Analogue Output | – |
| Switch point | 2 PhotoMos outputs (NOC) 30 VDC/AC, 0.4 A |
| Interface | – |
| Power supply | – |
| Sensor supply | – |
| Software properties |
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Datasheet
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User Manual
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| Housing | 96 x 24 mm |
| Display | 4-digit 14 mm digit height Colour: red |
| Range displayed | -1999 to 9999 |
| Operation | front panel keyboard protection class IP65 |
| Input | 4…20mA / span 3,5…21mA |
| Analogue Output | – |
| Switch point | 2 PhotoMos outputs (NOC) 30 VDC/AC, 0.4 A |
| Interface | – |
| Power supply | – |
| Sensor supply | – |
| Software properties |
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Datasheet
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User Manual
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| Housing | 96 x 48 mm |
| Display | 4-digit 14 mm digit height Colour: red, green, orange or blue display |
| Range displayed | -1999 to 9999 |
| Operation | front panel keyboard protection class IP65 |
| Input | Resistance 0…1 kOhm span 0… 1.1 kOhm 0…10 kOhm span 0…11 kOhm 0…100 kOhm span 0…110 kOhm 0…1000 kOhm span 0…1100 kOhm |
| Analogue Output | – |
| Switch point | – |
| Interface | – |
| Power supply | 230 VAC 24 VDC +/-10% galvanic isolated Other voltage supplies on demand! |
| Sensor supply | – |
| Software properties |
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Datasheet
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User Manual
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| Housing | MEX-CM |
| Display | 4-digit Colour: red 8 mm digit height |
| Range displayed | -999…+9999 Digit programmable |
| Operation | at the rear side over keyboard |
| Input | 4…20 mA |
 Datenblatt
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Digital Panel Meters for Current Loop Signals (4–20 mA / 0–20 mA)
Digital panel meters for current loop signals accept analog current inputs in the range 0–20 mA or 4–20 mA and convert them into a digital measurement value shown on a multi-digit LED display. The devices are designed for installation in control cabinets, typically offer front protection up to IP65 and often support additional functions such as scalable display, analog outputs, relay limit switching, and parameterized configuration of display scaling and units.
Questions & Answers
What are current-loop panel meters used for?
They are employed wherever instruments, sensors or transmitters deliver a 4–20 mA or 0–20 mA signal — for example pressure, temperature, flow or level sensors — and this signal needs to be made visible in the control cabinet.
Which input signals are accepted?
Standard input signals are 0–20 mA or 4–20 mA current loops. The meter measures the current and converts it digitally; after scaling, the processed value is displayed.
How is the input signal processed and converted into a measurement value?
The current is measured directly or via a measurement resistor and then converted internally. Thanks to configurable scaling, the resulting value can be expressed in physical units such as pressure, temperature or volume flow.
What display range is typically supported?
The display usually spans from -19999 to 99999 counts, allowing high-resolution indication of small and large values. Units and decimal point are configurable.
Is scaling and different engineering unit display possible?
Yes — scaling, decimal point and unit are freely configurable. A 4–20 mA signal can be mapped to units like 0–100 bar, 0–200 °C, 0–1000 l/min or any other physical parameter as long as the sensor supports it.
Are analog outputs available for forwarding the measured value?
Depending on the model, an analog output (e.g. 0/4–20 mA or 0–10 V) may be provided to forward the scaled value to PLCs, controllers or data loggers.
Are relay outputs for limit monitoring provided?
Yes — many models integrate one or two potential-free relays that can be configured for under-, over- or window limit detection, to trigger alarms or process actions when thresholds are crossed.
What supply voltage is required?
Common supply voltages are 24 VDC (galvanically isolated) or a universal supply (e.g. 100–240 VAC), depending on the specific device model.
How is the device configured?
Using a front keypad and menu, users configure input type, scaling, unit, decimal point, filter settings, analog and relay outputs — all without having to open the cabinet door.
What display features are common?
Multi-digit LED displays are common, with LED colors like red, green or orange, and adjustable brightness. Typical digit heights are 10 mm or 14 mm for good readability.
How is a stable reading ensured if the input signal fluctuates?
Digital filtering or averaging functions can be used to smooth out short-term fluctuations and ensure stable, reliable display of the measured value.
For which measurement types are these devices suitable via scaling?
With a 4–20 mA input, almost any process variable can be displayed — pressure, temperature, level, flow, pH, or percent values — provided the sensor/transmitter outputs an appropriate current signal.
What protection rating and panel sizes are typical?
The front panel typically meets IP65, and devices are built for standard control-cabinet cutouts — for example 48×24 mm, 72×36 mm or 96×48 mm — depending on display size and feature set.