2308 Multizone indicator / alarm unit

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Up to 8 displayed points with manual or automatic scanning
Thermocouple, resistance thermometer, DC V/I, AC V/I, potentiometer inputs
Heterogeneous inputs
Up to 10 freely configurable alarm points
Optoisolated 4-wires digital communication.
Protocol: GEFRAN CENCAL or MODBUS

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The 2308 is a universal panel instrument for displaying up to 8 different variables with configurable alarm or switch points.
Its characteristics of configurability, as well as speed of acquisition and response, mean that it is an extremely versatile instrument that may be used for the display of physical phenomena with alarm switching in a diversity of industrial applications.
The instrument can accept temperature signals from isolated thermocouples, even of different types, and from 2 or 3-wires resistance thermometers, as well as from linear signals in dc voltage or current (e.g. potentiometers, amplified pressure probes, transmitters, etc.).
The selection of the input type for each channel is made by harware configuration, while the scale range (for linear inputs) may be configured from the front panel keys (software).
The instrument may be also be configured for 8 ac voltage inputs.
Shunts and dividers are available to condition the various ac voltage and current signal.
Alarm output are available with a minimum of 2 to a maximum of 10 using the MD81 external expansion unit.
The alarms themselves have multiple functions and allow ample freedom of choice.
In particular, AL1 and AL2 can be attributed to one of any of the 8 channels, or to indicate the state of the alarm condition of the input group (selectable in the range 1...8).
The passive current loop or RS485 serial link is convertible to RS232 using the CLB94 adapter.

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DataSheet

2308 datasheet

Brochure

Brochure (Indicators, Alarm Units, Timers and Counters)

User manual

Installation and Operation Manual

Guide

Address Map Modbus

Solution

Chemical-Pharmaceutical

GEFRAN offers a wide range of sensors, indicators and controllers for the chemical pharmaceutical industry, suitable for processes that demand reliability, precision, diagnostics and data transmission to supervisory units.
There are many complete solutions for temperature control, with configurable acquisition inputs and outputs for electric heaters, fans, inverters, proportional or servo-controlled valves. Parameter recipes can be managed digital communication with PLCs and other control units. Heat profiles can also be run.
The wide range of products also includes controllers and programmers with advanced functions such as cascade and ratio controls.
The components are also ideal for plant expansion and maintenance, thanks to their great versatility in terms of possible installations, materials used for sensing elements, measurement ranges, resolution and sampling speed, types of output signals, digital communication and protocols.