Related Manuals for Ahlborn ALMEMO 2490-2
Summary of Contents for Ahlborn ALMEMO 2490-2
- Page 1 ____________________________ Operating instructions Universal measuring instruments ® ALMEMO 2490-1, 2490-2 V2.3 30.05.12 www.ahlborn.com...
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Page 2: Operating Controls
1. Operating controls 1. OPERATING CONTROLS (1) Measuring inputs M0 and M1 M0 ... M1 for all ALMEMO ® sensors M2 Function channel, differential M10...M32 9 additional channels (2) Analog outputs P0 (option) P0 Clamp connector (ZA 1000-KS) (3) Outputs A1, A2 A1 Interface USB (ZA 19019-DKU) RS 232 (ZA 1909-DK5) Optic fiber (ZA 1909-DKL) -
Page 3: Table Of Contents
Contents 2. CONTENTS 1. OPERATING CONTROLS .................2 3. GENERAL ....................5 3.1 Warranty ....................5 3.2 Scope of delivery ................6 3.3 Waste disposal..................6 4. SAFETY INSTRUCTIONS................7 4.1 Special notes on use................8 4.2 Handling batteries / rechargeable batteries correctly......8 5. INTRODUCTION ..................8 5.1 Functions..................... - Page 4 2. Contents 11. OUTPUTS....................25 11.1 Interface...................25 11.2 Analog outputs ................26 12. DEVICE CONFIGURATION ..............27 12.1 Device address and networking.............27 12.2 Analog output .................28 12.3 Automatic switch OFF ..............29 12.4 Device locking ................29 12.5 Atmospheric pressure compensation ..........29 13. TROUBLE-SHOOTING ................30 14.
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Page 5: General
General 3. GENERAL Congratulations on your purchase of this new and innovative ALMEMO ® meas- uring instrument. Thanks to the patented ALMEMO ® connector the device con- figures itself automatically; its operation should be fairly straightforward. The device can, however, be used with such a wide range of sensors and peripher- als and offers many different special functions. -
Page 6: Scope Of Delivery
3. General 3.2 Scope of delivery When you unpack the device check carefully for any signs of transport damage and ensure that delivery is complete. ® Measuring instrument ALMEMO 2490 with 3 AA alkaline batteries These operating instructions ALMEMO ® Manual CD with the AMR-Control software and various useful accessories In the event of transport damage please retain the packaging material and in-... -
Page 7: Safety Instructions
Safety instructions 4. SAFETY INSTRUCTIONS DANGER Danger to life and limb, risk of damage to equipment Read the instructions carefully before starting to operate the device. Please ensure that you comply with all general safety ad- vice and the special safety instructions included in other chapters. -
Page 8: Special Notes On Use
5. INTRODUCTION ® The ALMEMO 2490 is a new member in our family of unique measuring ® devices - all equipped with Ahlborn's patented ALMEMO connector system. ® The intelligent ALMEMO connector offers decisive advantages when connect- ing sensors and peripherals because all parameters are stored in an EEPROM located on the connector itself;... -
Page 9: Functions
Introduction ® 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) -
Page 10: Measuring Operations
5. Introduction via its screw terminals. For digital input signals, frequencies, and pulses, ad- apter connectors are available with an integrated microcontroller. It is thus pos- ® sible to connect virtually any sensor to any ALMEMO measuring instrument and to change sensors without the need for any extra settings. Function channels Maximum, minimum, average, and differential values from certain measuring points can be programmed as function channels, also internal channels, and... - Page 11 Functions uring channel to the next using the keypad. The selected measuring point is by default assigned preferred status and is scanned at half the measuring rate; all other active channels are also scanned but in the background (semi-continu- ous mode). The data is output on the display and, if available, to an analog out- put.
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Page 12: Process Control
5. Introduction 5.1.3 Process control (interface functions, see Manual Ch 6, not type L) To record the measured values from all connected sensors in digital form measuring point scanning is performed continuously with measured value out- put according to a time-based process control. This may be per cycle or, if really rapid results are required, at the measuring rate itself. -
Page 13: Initial Commissioning
Functions Output All data logs, measured values, and programming parameters can be output to any peripheral equipment. RS232, RS422, USB, and Ethernet interfaces are available using the appropriate interface cables. Measured data can be output in list, column, or table format. Files in table format can be processed directly using any standard spreadsheet software. -
Page 14: Power Supply
6. Initial commissioning Measured value display and sensor adjustment via ´Measuring points - Measured values´ Data logging on the computer : Program the cycle via ´Devices - Programming´ Open the terminal window via ´File - Terminal´ ´File - Terminal - Open log ´, enter file name, ´Save´ Start the measuring operation by click ´Start´... -
Page 15: Switching On / Off, Reinitialization
Sensor supply volt sensor supply voltage available (maximum 150 mA) (self-healing fuse, 500 mA). Other voltages (12, 15, or 24 V or references for a potentiometer and strain gauge) can be obtained using special connectors; (see Manual 4.2.5 and 4.2.6). 7.5 Switching ON / OFF, reinitialization To switch the device ON briefly press and release the key (6) in the... -
Page 16: Measuring Inputs And Additional Channels
8. Connecting the transducers double sealing lip to protect the socket unit against the effects of splashing wa- ter. For any unused sockets protective stoppers are available. 8.2 Measuring inputs and additional channels The ALMEMO 2490-1 has 1 input socket, version 2490-2 has 2 input sockets ®... -
Page 17: Potential Separation
Potential separation 8.3 Potential separation When organizing a properly functioning measuring setup it is very important to ensure that no equalizing current can flow between sensors, power supply, and peripherals. All points must therefore lie at the same potential and / or any un- equal potentials must be electrically isolated. - Page 18 9. Display and keypad Display of measuring functions in the function field Measuring point Maximum value Minimum value Saved value Memory capacity Temperature value from double sensors °C Configuration of device address ACh1 Configuration of analog reference channel Configuration of locking AOFF Configuration of automatic OFF Special operating states and faults...
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Page 19: Keypad
Display 65OOO Overshoots values range (>65000) : flashes Overshoots measuring range Maximum value flashes Undershoots measuring range : Minimum value flashes 9.2 Keypad To operate the device a keypad with 7 keys is provided : Function : To switch ON the device : (see Section 7.5) ON OFF To switch OFF the device :... -
Page 20: Measured Value
10. Measuring operations 10.1 Measured value After switching ON first of all a segment test is performed; then the battery voltage appears and if the batteries are almost empty (<3.6 V) the LOBAT arrow also appears. The measured value is then displayed with the appropriate units in the main field and the measuring point is displayed in the function field. - Page 21 Measured value Transducers Sensor / con- Measuring range Units Abbre- nector viation °C AUFE Au-FeCr ZA 9000-FSA -270.0... +60.0 °C Ntc Typ N FN Axxx -30.00...+125.00 U 55 Millivolt ZA 9000-FS0 -10.000...+55.000 U 26 Millivolt 1 ZA 9000-FS1 -26.000...+26.000 U260 Millivolt 2 ZA 9000-FS2 -260.00...+260.00...
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Page 22: Double Display
10. Measuring operations Transducers Sensor / con- Measuring range Units Abbre- nector viation O2-C concentration with TC FY A640-O2 0 ... 40.0 Function channels: diFF Differential channels Mb1 - Mb2 Maximum value of channel Mb1 Minimum value of channel Mb1 A[t] Av. -
Page 23: Measured Value Memory
Peak value memory M ▲ To return to the measuring point display press key : As soon as you clear the memory, the current measured value will appear (be- cause measuring is continuous). 10.3 Measured value memory The ALMEMO 2490 can save 99 measured ®... -
Page 24: Relative Measuring
10. Measuring operations 10.4 Relative measuring One very useful function is to zero the meas- ured value at certain locations or at certain times as a reference value in order then to observe only the subsequent deviations. This function is independent of the locking status and does not modify the programming para- meters in the connector. -
Page 25: Differential Measurement
Sensor adjustment ● Conductivity probe must be withdrawn from the liquid and dried. ● O probe for water must be held in a zero solution. Zero-point adjustment is performed in 2 steps : The 1st time key is pressed the setpoint flashes in the display. The 2nd time key is pressed, adjustment is performed. -
Page 26: Analog Outputs
11. Outputs 9600 baud; this setting should not be altered. As alternative option I is available with an integrated RS485 interface. Via 6- pin ALMEMO ® clamp connector ZA1000-FSV these devices can be connected directly either to network distributor ZA5099-NVL or to bus driver ZA5099-AS. The transmit and receive lines must be crossed once-only. -
Page 27: Device Configuration
Device configuration 12. DEVICE CONFIGURATION On the ALMEMO ® 2490 measuring instru- ment a number of parameters can be con- figured. To do so when switching ON press and hold down key . The function field should then show an abbreviation for the parameter and the main field should show the value currently set. -
Page 28: Analog Output
12. Device configuration 12.2 Analog output By default the 1st analog output (cable at A2) is used to output the measured value for the selected measuring point and the 2nd analog output (cable at A1) is used to output the measured value for the 1st channel of the selected sensor; (see Manual 6.10.7). -
Page 29: Automatic Switch Off
Automatic switch OFF 12.3 Automatic switch OFF In menu item ´AOFF´ the device can be programmed to switch OFF automatic- ally if no key is touched for a certain settable number of minutes; this will help save the batteries. This automatic device switch OFF will not take effect if the setting is ´- -´... -
Page 30: Trouble-Shooting
13. Trouble-shooting 13. TROUBLE-SHOOTING The ALMEMO ® 2490 measuring instrument can be configured and pro- grammed in many versatile ways. It is suitable for connecting a wide variety of different sensors, additional measuring instruments, alarm signaling devices, and peripheral equipment. Given these numerous possibilities the device may in certain circumstances not behave quite as expected. - Page 31 Trouble-shooting Enter <ctrl Q> for XON, if the device is in the XOFF status. Check the programming by means of ´P15´ (see Manual 6.2.3). Test the transmit line only by selecting a measuring point using com- mand ´Mxx´ and check in the display. Error: Data transmission in the network does not function.
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Page 32: Declaration Of Conformity
14. Declaration of conformity 14. DECLARATION OF CONFORMITY Ahlborn Mess- und Regelungstechnik GmbH declares herewith that measuring instrument ALMEMO ® 2490 carries the CE label and complies in full with the requirements of EU directives relating to low voltage and to electromagnetic compatibility (EMC) (89/336/EWG). -
Page 33: Appendix
Appendix 15. APPENDIX 15.1 Technical data (see Manual 2.3) Measuring inputs : 2490-1 ALMEMO ® socket suitable for all ALMEMO ® sensors 2490-2 2 ALMEMO ® sockets, electrically isolated, suitable for ALMEMO ® sensors Measuring channels: 4 channels / socket for double sensors, function channels 2490-2 4 internal additional channels... -
Page 34: Product Overview
15. Appendix 15.2 Product overview Universal measuring instrument ALMEMO ® 2490-1 Order no. 1 measuring input , 2-row LCD, 7 keys, measured value memory with 99 locations, battery supply 3 ALMEMO ® output sockets, A1, A2 for cables RS232, USB, Ethernet, analog, trigger, relay, DC socket for mains adapter MA 2490-1 Same but with internal double analog output 0 to 10 V / 0 to 20 mA... -
Page 35: Index
Index 15.3 Index Accessories 15.2 additional channels AMR-Control 5.1.3 analog output 11.2 Analog output 12.2 analog output end 12.2 analog output start 12.2 analog output type 12.2 Atmospheric pressure compensation 12.5 Automatic switch OFF 12.3 Battery operation Connecting the transducers Data buffering Data logging Declaration of conformity... - Page 36 15. Appendix Measuring inputs 15.1 Measuring operations Measuring ranges 10.1.2 memory data 10.3 minimum value 10.2 networking 12.1 ON OFF Operating controls operating states Options 15.2 Order no. 15.2 Outputs Outputs 15.1 Peak value memory 10.2 Potential separation Power supply 15.1 14, 33 Process control...
- Page 37 Index Trouble-shooting two-point adjustment 10.5 Warranty Waste disposal WIN-Control 5.1.3 Zero-point adjustment 10.5 ALMEMO ® 2490...
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Page 38: Your Contact
15. Appendix 15.4 Your contact AHLBORN Mess- und Regelungstechnik GmbH Eichenfeldstraße 1 83607 Holzkirchen Germany internet : http://www.ahlborn.com e-mail : amr@ahlborn.com Even the greatest possible care cannot exclude the possibility of inaccuracies. We reserve the right to make technical changes without advance notice. -
Page 39: Almemo
Your contact ALMEMO ® 2490... - Page 40 15. Appendix ALMEMO 2490 ®...