Digital Counter, 6 Digit, Frequency/Rev/Speed

Digital counter is suitable for measuring the frequency, rotational speed, linear speed and flow of various types of control equipment. 6 digit counters can be customized as special test instrumentation for pulse width detection, duty ratio detection, etc.

SKU: CCHN-DIGC-FA6D

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Delivery date: 6-25 days

Overview

Digital counter has 6 digit display, frequency/rev/linear speed measuring function, DC 12V/24V external power supply.

Features:

Various parameter settings, simple operation.
Input: Various waveform pulses (square wave, triangle wave), proximity sensor, photoelectric sensor, voltage signal, contact switch, encoder, etc.
Digital counter can also be used to measure the power frequency (AC 0-600V), measurement range: 0.01Hz-100KHz, resolution: 0.01Hz.
6 digit display, decimal point automatic conversion.
Input/output signals photoelectric isolated, anti-interference ability.
Digital output: Up to 3 alarms, high value, low value, high and low value alarm modes are optional, analog output: 4-20mA or 0-10V transmission output, measuring range setting arbitrarily.
Standard RS232 or RS485 MODBUS RTU communication, can be directly connected with computers, PLC or other equipments.

Specification:

Mode	CCHN-DIGC-FA6
Weight	350g
Accuracy	0.1%±2 digit
Power supply	AC 220V/110V±15%, AC 90-260V, DC 24V±10%, power dissipation≤5VA
Input signal	Pulse signal, square wave, sine wave, 5V≤H≤30V, 0≤L≤2V, rising edge trigger, frequency: 0.01~10KHz, 1Hz-100KHz
Display counting range	-199999~999999
Input impedance	≥10KΩ
Transmission output	4-20mA, 0-10V, etc. (range can be set)
Insulation resistance	≥100MΩ (between DC 500V power terminal and external terminal)
Dielectric strength	AC 1500V 1min (between power terminal and external terminal)
Environment	Ambient temperature: 0~50°C, relative humidity: 35~85%RH
External power supply	DC 12V±5%, 50mA max / DC 24V±5%, 30mA max
Protection class	IP65

Selection table:

Dimension (lengthheightdepth)	Power supply	AL1	AL2	Communication interface	External power supply
7: 727280mm with hole size 67.567.5mm; 8: 964880mm with hole size 9245mm	V0: AC 90-260V; VE: AC/DC 12-30V, or DC 24V	N: No output; R: Relay; S: SSR/LOGIC	N: No output; R: Relay; S: SSR/LOGIC	C0: No communication; C2: RS232; C4: RS485	A: DC 12V/30mA; B: DC 24V/30mA; C: DC 5V

Wiring diagram:
Digital counter wiring diagram
Tips: Error of digital counter

Quantization error
In the digital measurement of frequency, the measured quantity is not exactly an integral multiple of the standard unit. So there is a part of the time not counted in the quantization process cause the error. Besides, the gate opening and closing time are out of sync (random) with measured signals, which will cause plus or minus error of digital counter.
Trigger error
Under the influences of interference signal, the gating pulse let the triggering advanced or lagged, and then trigger error is caused.
Standard frequency error
Under the influences of the external environment or its own structural performance and other factors, the standard frequency (such as the crystal oscillator) adopted by digital counter will produce drift, and then standard frequency error is introduced.