| Housing | 48 x 24 mm |
| Display | 5-digit 10 mm digit height Colour: red, green, orange or blue display |
| Range displayed | 0 to 99999 |
| Operation | front panel keyboard protection class IP65 |
| Input | Frequency 0.01 to 999.99 kHz 3-wire PNP/NPN, Namur, incremental encoder, TTL signals Digital input: <2.4V OFF, >10V ON, max. 30 VDC |
| Analogue Output | 0/4-20 mA / 0-10 VDC / 16 Bit Alternatively sensor supply |
| Switch point | 2 PhotoMos outputs (NOC) 30 VDC/AC, 0.4 A |
| Interface | – |
| Power supply | 24 VDC galvanic isolated 100-240 VAC 50/60 Hz / DC +/- 10% |
| Sensor supply | 10 VDC / 20 mA, incl. digital input 24 VDC / 50 mA, incl. digital input & impulse output, max. 10kHz Alternatively analog output |
| Software properties |
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 Datasheet
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User Manual
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| Housing | 96 x 24 mm |
| Display | 5-digit 14 mm digit height Colour: red, green, orange or blue display |
| Range displayed | 0 to 99999 |
| Operation | front panel keyboard protection class IP65 |
| Input | Frequency 0.01 to 999.99 kHz 3-wire PNP/NPN, Namur, incremental encoder, TTL signals Digital input: <2.4V OFF, >10V ON, max. 30 VDC |
| Analogue Output | 0/4-20 mA / 0-10 VDC / 16 Bit Alternatively interface RS232/RS485 |
| Switch point | 1 or 2 change-over relays 250 VAC / 2 AAC ; 30 VDC / 2 ADC |
| Interface | RS232 or RS485 galvanic isolated Alternatively analog output |
| Power supply | 10-40 VDC / 18-30 VAC 50/60Hz 100-240 VAC 50/60 Hz / DC +/- 10% |
| Sensor supply | 10 VDC / 50 mA, incl. digital input 24 VDC / 50 mA, incl. digital input |
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| Datasheet |
| User Manual |
- 5-digit digital indicator for frequency and pulse measurement
- Measuring range: 0 to 99999
- Inputs: frequency 0.01 Hz to 999.99 kHz, NPN/PNP, Namur, TTL
- Analog output: 0/4–20 mA or 0–10 V (16 bit)
- 2 relay outputs for limit monitoring
- Power supply: 230 VAC or 10–30 VDC (galvanically isolated)
- Integrated sensor supply
- Front keypad operation, protection class IP65
- Compact design: 96 x 48 mm
- Functions: totalizer, filtering, min/max memory, alarms
 Datasheet
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User Manual
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- 5-digit digital indicator for frequency and pulse measurement
- Measuring range: 0 to 99999
- Inputs: frequency 0.01 Hz to 999.99 kHz, NPN/PNP, Namur, TTL
- 2 analog outputs: 0/4–20 mA or 0–10 V (16 bit)
- 2 or 4 relay outputs or optionally 8 PhotoMOS outputs
- Interfaces: RS232 or RS485 (galvanically isolated)
- Power supply: 100–240 VAC or 10–40 VDC
- Integrated sensor supply
- Front keypad operation, protection class IP65
- Functions: totalizer, filtering, min/max memory, alarms
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Datasheet
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User Manual
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Digital Frequency Panel Meters (ICS)
Digital frequency panel meters in the “Frequency (ICS)” category measure electrical frequency or pulse rates and display the values digitally on LED or LCD screens. These instruments typically accept a wide variety of signal types — such as pulses from sensors, encoders or digital inputs (e.g. TTL, PNP/NPN, Namur) — and cover large frequency ranges from very low frequencies up to several hundred kilohertz. They are used for rotational speed monitoring, pulse counting, process control and automation systems. Many models include additional features such as analog outputs, relay contacts, min/max memory and communication interfaces.
F&A
What is a digital frequency panel meter?
A digital frequency panel meter measures the frequency or pulse rate of an input signal and displays the result numerically. It is designed for installation in control cabinets and automation systems and is suitable for processing signals from sensors, encoders and digital pulse sources.
Which input signals and ranges are supported?
The devices typically support wide frequency ranges, for example from 0.01 Hz up to several hundred kHz. Supported input signal types include incremental encoder signals, PNP/NPN inputs, Namur sensors, TTL logic levels and other digital pulse sources.
How does frequency measurement work?
The panel meter counts cycles or pulses within a defined time window and calculates the frequency based on the count. Internal electronics filter and condition the input signal so that stable and reliable readings are produced, even with noisy or irregular signals.
Which display and output options are available?
Typical devices offer 5-digit LED or LCD displays. Depending on the model, additional features may include analog outputs (such as 4–20 mA or 0–10 V), relay outputs, MOSFET or photoMOS switches, serial communication (e.g. RS-232 or RS-485), min/max memory, alarm thresholds or pulse outputs for further counting or control tasks.
Where are digital frequency panel meters used?
Common applications include rotational speed monitoring (motors, pumps, conveyors), frequency and pulse measurement in process control, automation systems, counting tasks in production, flow or speed calculation via sensors and general industrial signal monitoring.
What are the advantages of digital frequency meters?
They provide accurate numeric readings, offer filtering and signal conditioning, avoid reading errors, support additional functions (alarms, storage, outputs) and integrate easily into automated systems. Compared to analog devices, they are usually more flexible, precise and stable.
What should be considered when selecting a device?
Important factors include the required frequency range, compatibility with the input signal type (encoder, TTL, PNP/NPN etc.), needed output features (relay, analog, communication), display size, supply voltage and installation dimensions. Signal quality and noise immunity should also be considered.
Are there limitations?
Digital frequency meters require a stable power supply and clean signal conditions. Very noisy or unstable input signals may require filtering or signal conditioning. At extremely high frequencies, the device’s maximum counting capability must be considered.