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Ahlborn ALMEMO 2590-2A User Manual

Ahlborn ALMEMO 2590-2A
80 pages
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____________________________
Operating instructions
Universal measuring instruments and
data loggers
ALMEMO
®
2590-2A/-4AS
V3.4
21.10.2021
www.ahlborn.com

Table of Contents

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Ahlborn ALMEMO 2590-2A Specifications

General IconGeneral
TypeData Logger
Input Channels2
ALMEMO® ConnectorYes
Current Range0 to 20 mA
Input TypesVoltage, Current, Resistance, Temperature, Frequency
Voltage Range-10 V to +10 V
Temperature Range-200 °C to +1000 °C
Accuracy±0.1 % of reading ±1 digit
Sampling Rate10 Hz
DisplayLCD
Communication InterfacesRS-232, USB
Power SupplyBattery or AC adapter
Storage Temperature-20 °C to +70 °C

Summary

Operating instructions

1. OPERATING CONTROLS

(1) Measuring inputs M0 to M3

Details about measuring inputs for ALMEMO® sensors.

(2) Output sockets A1, A2

Lists available output sockets like V24, USB, Ethernet, etc.

(6) Operating keys

Explanation of the device's operating keys and their functions.

3. GENERAL

3.1 Warranty

Details of the product's guarantee and warranty conditions.

3.2 Scope of delivery

Lists the items included in the product package.

4. SAFETY INSTRUCTIONS

4.1 Special notes on use

Specific considerations for using the device in different environments.

4.2 Handling batteries / rechargeable batteries correctly

Guidelines for safe battery insertion, charging, and disposal.

5. INTRODUCTION

5.1 Functions

Overview of the device's capabilities and features.

5.1.1 Sensor programming

How sensor channels are programmed automatically by connectors.

5.1.2 Measuring operations

Details on evaluating sensors and function channels.

6. INITIAL COMMISSIONING

Sensor connection

Steps for connecting sensors to the device sockets.

Power supply

Options for powering the device, including battery and mains adapter.

7. POWER SUPPLY

7.1 Battery operation and supply voltage monitoring

Information on battery life, monitoring, and low battery indication.

7.2 Mains operation

How to power the device using a mains adapter.

7.3 External DC voltage supply

Details on using external DC power sources.

8. CONNECTING THE SENSORS / TRANSDUCERS

8.1 Sensors / transducers

Connecting standard and custom sensors using ALMEMO® connectors.

8.2 Measuring inputs and additional channels

How measuring channels are allocated and additional channels are used.

8.3 Potential separation

Importance of potential separation in measuring setups for safety.

9. DISPLAY AND KEYPAD

9.1 Display and menu selection

Description of the LCD display and navigation through menus.

9.2 Measured value display and status symbols

How measured values and status symbols are shown on the display.

9.3 Function keys

Explanation of how function keys operate in different menus.

9.4 Function selection

How to activate or program functions during operation.

10. MENU SELECTION

M* sensor display

Accessing the sensor display menu.

F Function menus

Accessing the general function menus.

P Sensor Programming

Accessing the sensor programming menus.

P Device configuration

Accessing device configuration settings.

11. MEASURING MENUS

11.1 Menu Sensor display

The default menu showing measuring point, value, and units.

11.2 Measured value correction and compensation

Performing zero-point correction and gain adjustment.

11.2.1 Set measured value to zero

Function to zero the measured value as a reference.

11.2.4 Temperature compensation

How temperature affects measurements and compensation methods.

11.2.5 Atmospheric pressure compensation

11.2.6 Cold junction compensation

Automatic compensation for thermocouples using NTC sensor.

11.3 Differential measurement

Calculating the difference between connected sensors.

11.4 Measuring points list

Overview of all measuring points with their values and functions.

11.5 User measuring menu U1 data logger

11.6 User menus

11.6.1 Functions

Lists available functions and their display/key commands.

11.6.2 Menu configuration

Steps for configuring user menus using ALMEMO®-Control software.

12. FUNCTION MENUS

12.1 Maximum, minimum, individual values memory

Storing and displaying max, min, and individual measured values.

12.2 Averaging

Overview of different averaging modes available.

12.2.1 Smoothing meas values by means of a sliding average

Smoothing unstable or fluctuating measured values.

12.2.2 Averaging over individual manual meas operations

Calculating averages from manual measurement scans.

12.2.3 Averaging over time

12.2.4 Averaging over the cycle

Calculating average values at cyclic intervals.

12.2.5 Averaging over measuring points

Averaging values from multiple associated measuring points.

12.2.6 Volume flow measurement

Calculating volume flow by multiplying velocity and cross-section.

12.2.7 Array measuring Option VN

Calculating average velocity in flow channels via array measuring.

12.3 Two-point adjustment with setpoint entry

12.4 Scaling

12.5 Data logger functions

Acquiring and recording measured values to internal or external memory.

12.5.1 Internal data memory

Details on the internal EEPROM memory for data logging.

12.5.2 Memory connector with SD-card

Using an external SD-card for increased data logging capacity.

12.5.3 Date and time-of-day

Programming and displaying the device's date and time.

12.5.4 Once-only output / saving of all measuring points

12.5.5 Cyclic output / saving of all measuring points

Performing cyclic recording and output of measured values.

12.5.6 Numbering of measuring operations

Assigning numbers to identify measuring operations.

12.5.7 Memory space, memory output, clearing the memory

Managing memory capacity, outputting, and clearing data.

12.5.8 Scanning configuration

12.5.8.2 Scanning mode

Selecting between Normal, Sleep, Monitor, and Fail-safe scanning modes.

Sleep mode

Operating the device in an energy-saving sleep mode for long-term monitoring.

12.5.8.3 Output format

Defining print layout for data output (List, Columns, Table).

12.5.9 Starting and stopping measuring operations

13. SENSOR PROGRAMMING

13.1 Selecting the input channel

Setting the required input channel for sensor parameters.

13.2 Measuring point designation

Assigning a 10-character alphanumeric designation to each measuring point.

13.3 Averaging mode

Defining various averaging modes for data processing.

13.4 Locking the sensor programming

Protecting sensor programming with locking levels.

13.5 Limit values

13.6 Scaling, Decimal point setting

Scaling sensor signals and setting decimal point position.

13.7 Correction values

Correcting sensor readings using zero-point and gain values.

13.8 Changing the units

Replacing default units with custom two-character units.

13.9 Selecting the measuring range

13.10 Function channels

Using ranges for processing parameters or calculated results.

13.11 Special meas. ranges,Linearization,Multi-point calibration

Setting special ranges, linearization, and multi-point calibration.

13.12 Special functions

Accessing sensor parameters for routine or special applications.

13.12.1 Print cycle factor

13.12.2 Actions in the event of a limit value being exceeded

Configuring relay assignments for alarm reporting.

13.12.3 Analog start and analog end

Scaling analog output to a specific subrange displayed on screen.

13.12.4 Minimum sensor supply voltage

Monitoring and setting minimum sensor supply voltage to prevent errors.

13.12.5 Output function

13.12.6 Reference channel 1

Setting a measuring point as a reference channel for calculations.

13.12.7 Reference channel 2 or multiplexer

Using a second reference channel or multiplexer for input assignments.

13.12.8 Element flags

Activating element flags for sensor-specific functions.

14. DEVICE CONFIGURATION

14.1 Device designation

Entering text for print headers and network assignment.

14.2 Language

Selecting the user interface language (German, English, French).

14.3 Illumination and contrast

Adjusting display brightness and contrast levels.

14.4 Interface, device address, and networking

Configuring interface settings, device address, and network communication.

14.5 Baud rate, Data format

14.7 Hysteresis

Setting hysteresis for alarm triggers.

14.8 Operating parameters

Configuring general operating parameters like noise suppression.

15. OUTPUT MODULES

15.1 Data cables

Details on ALMEMO® data cables and their connections.

15.2 Relay-trigger modules

Connecting and configuring relay-trigger modules for outputs.

Trigger inputs

Configuring trigger sources for controlling measurement sequences.

15.3 Analog outputs

Connecting and configuring analog output modules.

Programmed analog value output

Scaling the analog output

Scaling analog output to the used measuring range.

16. TROUBLE-SHOOTING

Error No display, display malfunction, keys do not react

Troubleshooting steps for non-responsive display or keys.

Measured values are incorrect.

Steps to resolve incorrect measured value readings.

Data transmission via the interface does not function.

Troubleshooting data transmission problems via interface.

Data transmission in the network does not function.

Resolving issues with network data transmission.

17. DECLARATION OF CONFORMITY

18. APPENDIX

18.1 Technical data

Specifications and technical details of the device.

18.2 Product overview

Summary of device features, options, and accessories.

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