5. INTRODUCTION. Ahlborn ALMEMO 2790, MA2790BTFV

Introduction

5. INTRODUCTION

The ALMEMO ® 2790 series is a new member in our family of unique measuring devices - all equipped with Ahlborn's patented ALMEMO ® plug system. These systems incorporate a wireless Bluetooth module and, via the Bluetooth sensor module included in delivery, provide a wireless link to a further ALMEMO ® measuring instrument or data logger. The intelligent ALMEMO ® plug offers decisive advantages when connecting sensors and peripherals because all parameters are stored in an EEPROM located in the plug itself; repeat programming is thus no longer necessary.

All sensors can be connected to all ALMEMO ® measuring instruments in the same way (except D7 sensors). Programming and functioning are identical for

® measuring all units. The following points apply to all devices in the ALMEMO system; these are described in detail in the ALMEMO ® Manual which is included in delivery with each device.

Detailed explanation of the ALMEMO ® system (Man, Chap. 1)

Overview of the device functions and measuring quantities and ranges (Man., Chap. 2)

Basic principles, operating instructions, and technical data for all sensors (Man., Chap. 3)

Options for connecting your own existing sensors (Man., Chap. 4)

USB interface modules (Man., Sec. 5.2)

All functions and their operation via the interface (Man., Chap. 6)

Complete list of interface commands with all the printouts (Man., Chap. 7)

The operating instructions you are now reading cover only those features and controls that are specific to this device. These operating instructions often refer to more detailed descriptions in the Manual.

5.1 Functions

Measuring instrument ALMEMO

ALMEMO ®

® 2790 has just one measuring input M0 for all

sensors. This is with the exception of D7 sensors, which cannot be used with this measuring instrument. The measuring possibilities are virtually limitless; there are four channels per sensor plug and over 70 measuring ranges. With option RHA the measuring instrument also incorporates a digital sensor for temperature, humidity, and atmospheric pressure, with four channels. To facilitate operation and measured value display on site the device incorporates a keypad and an LCD. At the DC socket it is possible to connect an external power supply source or a USB data cable with integrated power supply. Via this interface both the device and the sensor can also be programmed directly. (see Man. 6) However, the most important innovation on this device is its integrated Bluetooth wireless module, which, in conjunction with the

Bluetooth sensor module (included in delivery), makes it possible to transmit measured values over a wireless link to another linked ALMEMO ® measuring instrument or data logger. Measured values are collected here together with data from other wireless sensors or standard sensors and then saved - or forwarded online to a computer for further processing. It is also possible to ope rate multiple wireless sensor links in parallel.

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