Introduction
5. INTRODUCTION
The ALMEMO
®
2450-1 is a new member in our family of unique measuring de-
vices - all equipped with Ahlborn's patented ALMEMO
®
connector system. The
intelligent ALMEMO
®
connector offers decisive advantages when connecting
sensors and peripherals because all parameters are stored in an EEPROM lo-
cated on the connector itself; repeat programming is thus no longer necessary.
All sensors and output modules can be connected to all ALMEMO
®
measuring
instruments in the same way. Programming and functioning are identical for all
units. The following points apply to all devices in the ALMEMO
®
measuring
system; these are described in detail in the ALMEMO
®
Manual which is in-
cluded in delivery with each device.
Detailed explanation of the ALMEMO
®
system (Manual Ch 1)
Overview of the device functions and measuring ranges (Manual Ch 2)
Basic principles, operation, and technical data for all sensors (Manual Ch 3)
Options for connecting your own existing sensors (Manual Ch 4)
All analog and digital output modules (Manual Section 5.1)
Interface modules USB, RS232, optic fiber (Manual Section 5.2)
The whole ALMEMO
®
networking system (Manual Section 5.3)
All functions and their operation via the interface (Manual Ch 6)
Complete list of interface commands with all the printouts (Manual Ch 7)
The operating instructions you are now reading cover only those features and
controls that are specific to this device. Many sections therefore also refer to
the more detailed description in the Manual; (see Manual, Section xxx).
5.1 Functions
The ALMEMO
®
2450-1 measuring instrument has just one measuring input
suitable for most ALMEMO
®
sensors - with the single exception of resistance
sensors and some special sensors. The measuring possibilities are numerous;
there are 4 channels in the sensor connectors with over 40 measuring ranges.
For operation purposes the device incorporates a large LCD display and a key-
pad. An option is available with an internal electrically isolated analog output
(socket P0) including a DC socket for a mains adapter. The standard interface
version has three output sockets for ALMEMO
®
output modules, namely A1
and A2 for digital interfaces and trigger and relay cables, A2 for an analog out-
put, and a DC socket for a mains adapter. Several devices can be networked
by simply linking them together via cable.
5.1.1 Sensor programming
The measuring channels are programmed, completely and automatically, by
the ALMEMO
®
connectors. The user can supplement or modify this program-
ming; this applies to the interface version only. However, devices without the
interface also behave according to all the programmed parameters.
ALMEMO
®
2450-1
9
