Yokogawa 414 Batch Controller - Manual (Page 5)

1. INTRODUCTION
The Model 414A Batch Controller accepts analog flow signals and automatically
controls the batching of fluids via a one or two stage control valve.
The instrument is extremely flexible and easy to operate, with a four key, front
panel operation that enables the batch quantity to be set, and batches to be
started or stopped.
The Batch Controller is a microprocessor based instrument which measures
4-20mA, 0-20mA, 1-5 Volt or 0-10 Volt signals from flowmeters and pressure
transducers. The instrument can be programmed to display directly in
engineering units and includes such features as linear or square law calculation,
integration and digital filtering.
The 4-20mA, 0-20mA, 1-5 Volt and 0-10 Volt input signals are isolated from the
supply rails and outputs, and may therefore float independently. This ensures
that the input will be compatible with all transmitters and can be used in current
loops which have more than one receiver.
The instrument is fully programmable, with all calculation constants set via the
front panel switches and stored in a non-volatile memory which will retain data
indefinitely. The user can program such parameters as span, zero, filtering
levels, display resolution and cutoff points.
This instrument conforms to the EMC-Directive of the Council of European
Communities 89/336/EEC and the following standards:
Generic Emission Standard EN 50081-1 Residential, Commercial & Light
Industry Environment.
Generic Emission Standard EN 50081-2 Industrial Environment.
Generic Immunity Standard EN 50082-1 Residential, Commercial & Light
Industry Environment.
Generic Immunity Standard EN 50082-2 Industrial Environment.
In order to comply with these standards, the wiring instructions in Section 8.1
must be followed.
Introduction 3