General Description - London Electronics EasyReader ER4C Instruction Manual

General Description

The EasyReader C displays are large versions of the popular "Intuitive" counter and ratemeter
family.
They accept pulse inputs from digital sensors such as NPN, PNP or contact closure proximity
detectors.
Their main function is to monitor production lines, counting items and monitoring rate of
production, but they can also be used for accurate measurement of frequency and speed.
They also accept quadrature input signals, so are ideal for bidirectional position monitoring too.
Their unique INTUITIVE programming system gives the simplest possible setup procedure.
You can scale the counter and ratemeter so that a given number of pulses gives a certain
display value. The scaling is digital and highly stable, thanks to a trimmed quartz-crystal timing
oscillator. Scale factors from 0.001 to 9999 give wide calibration possibilities.
An excitation supply gives you 24V DC at up to 100mA, useful if you want to power an optical
sensor, proximity switch etc.
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