Ahlborn ALMEMO 2690-8A User manual

____________________________
Operating Instructions
Data Logger
ALMEMO® 2690-8A
V4.3
12.10.2012
www.ahlborn.com

1. Operating Controls
1. OPERA ING CON ROLS
(1) Meas. inputs M0 to M4
M0 ... M4 for all ALMEMO-Sensors
M10...M34 15 a itional channels
(2) Output sockets A1, A2
A1 Interfaces USB(ZA1919-DKU)
Interface V24 (ZA 1909-DK5)
Fiber optics V24 (ZA 1909-DKL)
Ethernet (ZA 1945-DK)
RS 422 (ZA 5099-NVL/NVB)
Analog output 2 (ZA 1601-RK)
A2 Network cable (ZA1999-NK5/NKL)
SD car connector (ZA 1904-SD)
Trigger input (ZA 1000-ET/EK)
Relay outputs (ZA 1000-EGK)
Analog output 1 (ZA 1601-RK)
(3) Connector socket DC 12V
Mains a apter(ZA1312-NA8, 12V,1.0A)
USB Cable (ZA1919-DK 5, 5V 0.4A)
DC-Cable isolat. (ZA2690- Kx, 10-30V)
(4) Sleep-LED
(5) LCD display
Status line:
CCont. measuring point scan
© , ll Measurement Start, Stop
REC Memory recor
COM Output of meas. values
l©, ©l Meas. start, en programme
R01 Alarm relay status
* , * Light on, pause
Battery operation/charge status
13 lines for functions
Function of keys F1, F2, F3, F4
(6) Control keys
ON , <POFF> Switch evice on, off
 ,  ,  Function selection
F1 ... F4 Function keys (soft keys)
PROG Programming
 ,  ,  Data input
<ESC> Function abort
 Last measuring menu
(7) Rubber shock absorber
2 ALMEMO 2690-8
4
5
6
7
123
8
Back of unit:
(8) Battery box
3 Mignon Alkaline Batteries
or 3 Mignon NiCd/NiMH Accumulators
(9) Stand for stand and hang up
(for opening out from 90° to 180°
please press the stan together!)

Table of Contents
2. ABLE OF CON EN S
1. OPERA ING CON ROLS..........................................................................2
3. GENERAL...................................................................................................6
3.1 Guaranteed..........................................................................................6
3.2 Extent of the Delivery .........................................................................6
3.3 Waste disposal....................................................................................7
4. SAFE Y INS RUC IONS..........................................................................8
4.1 Special notes on use...........................................................................9
4.2 Handling batteries / rechargeable batteries correctly......................9
5. IN RODUC ION.........................................................................................9
5.1 Functions...........................................................................................10
5.1.1 Sensor Programming.................................................................10
5.1.2 Measurement.............................................................................12
5.1.3 Process flow control...................................................................13
6. INI IAL OPERA ION................................................................................14
7. POWER SUPPLY.....................................................................................15
7.1 Rechargeable battery operation voltage monitoring......................16
7.2 Battery operating mode....................................................................16
7.3 Mains operation.................................................................................16
7.4 External DC voltage supply..............................................................17
7.5 Sensor Supply...................................................................................17
7.6 Switch On/Off, Reinitialisation.........................................................17
7.7 Data buffering....................................................................................17
8. CONNEC ION OF HE RANSDUCERS................................................18
8.1 ransducers.......................................................................................18
8.2 Measuring inputs and Additional Channels....................................18
8.3 Isolation.............................................................................................19
9. DISPLAY AND KEYPAD..........................................................................21
9.1 Display and Menu Selection.............................................................21
9.2 Function Keys ...................................................................................22
9.3 Control Symbols................................................................................22
9.4 Function Selection............................................................................23
9.5 Data Entry..........................................................................................23
10. MEASURING USING MEASURING-MENUS...........................................24
10.1 Measuring with one Measuring Point............................................25
10.1.1 Selecting the Measuring Point..................................................25
10.1.2 Peak Value Memory with Time an Date..................................25
10.2 Correction of the Meas. Value and Compensation ......................26
10.2.1 Setting the Meas. Value to Zero...............................................26
10.2.2 Zero Point A justment .............................................................27
10.2.3 Sensor A justment in the case of chemical sensors................27
ALMEMO® 2690-8 3

2. Table of Contents
10.2.4 Two-point A justment with Setpoint Entry................................28
10.2.5 Temperature Compensation ....................................................29
10.2.6 Atmospheric Pressure Compensation......................................29
10.2.7 Col Junction Compensation....................................................30
10.3 Measuring point scans and Output...............................................31
10.3.1 Single Output / Storage of all Measuring Points.......................31
10.3.2 Cyclic Output / Storage of all Measuring Points........................31
10.3.3 Memory space, Memory Output, Clearing the Memory............32
10.3.4 Output of Menu Functions........................................................32
10.3.5 Displaying Measure Values as a Line Diagram .....................33
10.4 Averaging.........................................................................................34
10.4.1 Damping of Meas. values by a Sli ing averag. win ow............35
10.4.2 Averaging Mo e.......................................................................35
10.4.3 Averaging over Manual Single Measurements.........................35
10.4.4 Array Measurement..................................................................36
10.4.5 Averaging over the Measuring Time.........................................37
10.4.6 Measurement Time, Measuring uration, Timer.......................37
10.4.7 Averaging over the Cycle..........................................................38
10.4.8 Averaging over several Measuring Points................................39
10.4.9 Volume Flow Measurement......................................................40
10.5 Display of Several Measuring Points ............................................41
10.5.1 Menu Multi Channel Display an Bar chart...............................41
10.5.2 Differential Measurement.........................................................41
10.5.3 Menu List of Measuring Points.................................................42
10.6 Assistant-Menus for Special Meas. Operations............................43
10.6.1 Thermal Coefficient..................................................................43
10.6.2 Wet Bulb Globe Temperature...................................................43
10.7 User Menus......................................................................................44
10.7.1 Functions..................................................................................44
10.7.2 Configuration of the menus .....................................................45
10.7.3 Function Printouts....................................................................46
11. PROGRAMMING WI H PROGRAMMING-MENUS.................................47
11.1 imes and Cycles............................................................................47
11.1.1 Time an Date .........................................................................47
11.1.2 Cycle with Storage Activation an Output Format....................47
11.1.3 Conversion Rate, Continuous Measuring Point Scan...............48
11.1.4 Time an Date of Start, Time an Date of En ........................49
11.2 Data Memory....................................................................................50
11.2.1 Memory connector with SD car ...............................................50
11.2.2 Data Acquisition.......................................................................51
11.2.3 Numbering of measurements...................................................52
11.2.4 Starting an Stopping of measurements..................................52
11.2.5 Scanning mo e........................................................................52
11.2.6 Memory Output.........................................................................54
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Table of Contents
11.3 Sensor Programming......................................................................55
11.3.1 Selecting the Input Channel......................................................55
11.3.2 Measuring Point Designation....................................................56
11.3.3 Averaging Mo e.......................................................................56
11.3.4 Locking the Programming of the Sensor..................................56
11.3.5 Limit Values..............................................................................57
11.3.6 Scaling, Decimal Point Setting..................................................57
11.3.7 Correction Values.....................................................................58
11.3.8 Changing the Dimension..........................................................58
11.3.9 Selecting the Measuring Range................................................58
11.3.10 Function Channels .................................................................61
11.3.11 Special meas. ranges, linearization, calibration......................62
11.4 Special Functions............................................................................63
11.4.1 Print Cycle Factor.....................................................................63
11.4.2 Minimum Sensor Supply Voltage..............................................63
11.4.3 Limit Value Responses.............................................................64
11.4.4 Analog Output Start an En ....................................................65
11.4.5 Output Function........................................................................65
11.4.6 Reference Channel 1................................................................66
11.4.7 Reference Channel 2 or Multiplexer.........................................66
11.4.8 Element Flags..........................................................................66
11.5 Device Configuration......................................................................67
11.5.1 Device Designation...................................................................67
11.5.2 Device A ress an Networking...............................................67
11.5.3 Bau Rate, Data Format...........................................................68
11.5.4 Language.................................................................................68
11.5.5 Lighting an Contrast...............................................................68
11.5.6 Atmospheric Pressure..............................................................68
11.5.7 Hysteresis.................................................................................69
11.5.8 Operating Parameters..............................................................69
11.6 Output Modules...............................................................................69
11.6.1 Data cable................................................................................70
11.6.2 Relais Trigger mo ules............................................................70
11.6.3 Analog Output..........................................................................72
11.7 Menu Power Supply........................................................................73
11.8 he locking and calibration menu (option KL).............................74
12. ROUBLESHOO ING..............................................................................75
13. DECLARA ION OF CONFORMI Y.........................................................76
14. APPENDIX................................................................................................77
14.1 echnical Data ................................................................................77
14.2 Product overview ...........................................................................78
14.3 Keyword index.................................................................................79
14.4 Your contact....................................................................................83
ALMEMO® 2690-8 5

3. General
3. GENERAL
Congratulations for buying this innovative ALMEMO® ata logger. By means of
the patente ALMEMO® connectors the evice configures itself an with the
help of menus an help win ows the operation shoul not be too ifficult. How-
ever, the evice allows the connection of a great variety of sensors an peri-
pherals with many special functions. For getting to know the function range of
the sensors an the iverse possibilities of the evice, you really shoul rea
these operating instructions an the correspon ing chapters of the ALMEMO®
manual. This is the only way to avoi operating an measuring errors as well
as amages of the evice. For a quick answer to all questions, a etaile
keywor in ex is provi e at the en of the instructions an of the manual.
3.1 Guaranteed
Every evice has to pass through several quality tests before leaving the
works. For a perfect function, a guarantee of two years from the elivery ate
is grante . Before sen ing back the evice, please pay attention to the in ica-
tions in chapter 12. Troubleshooting. Shoul there actually be a efect, please
use the original packing material for epatch if possible an enclose an ex-
pressive escription of the trouble in connection with the correspon ing circum-
stances.
In the following cases a guarantee benefit is exclu e :
After forbi en operations an changes in the evice by the client
Operating in surroun ing con itions that are not vali for this pro uct
Using unsuitable power supply an peripherals
Using the evice in a way it is not etermine for
Damages through electrostatic ischarge or flash of lightning
Not paying attention to the operating instructions
Changes in the pro uct features in favour of technical progress or ue to new
components are reserve to the pro ucer.
3.2 Extent of the Delivery
While unwrapping the elivery, pay attention to amages of the evice an to
its completeness:
Measuring instrument ALMEMO® 2690-8A with 3 AA NiMH
(nickel-metal hy ri e) rechargeable batteries
Rubber shock absorber with a stan ,
these operating instructions,
ALMEMO® Manual,
CD with Software AMR-Control an useful accessories
In case of a transportation amage, the packing material is to be kept an the
supplier is to be informe imme iately.
6 ALMEMO 2690-8

Waste isposal
3.3 Waste disposal
The pictogram showing a waste bin crosse through
means that the pro uct is subject to European Union regu-
lations on segregate waste isposal. This applies both to
the pro uct itself an to any accessories marke with the
same symbol. Disposal of any such item as unsorte o-
mestic waste is strictly forbi en
•Please ispose of all packaging materials accor ing to the applicable national
waste management regulations.
•Please ispose of car boar boxes, protective plastic packaging materials,
an all preservative substances separately an in the proper manner.
•The isposal of the evice itself (also of evice parts, accessories, an con-
sumables) is subject to the applicable national an local waste management
regulations an to the environmental protection legislation in force in the
country of use.
•Please ispose of all waste in the proper manner;
this applies in particular to all parts an substances that constitute a hazar
for the environment. This inclu es inter alia plastics, batteries, an re-
chargeable battery packs .
•When isposing of goo s, please wherever possible use the original pack-
aging materials.
ALMEMO® 2690-8 7

4. Safety instructions
4. SAFE Y INS RUC IONS
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.
Such risks may occur in the following circumstances :
•Failure to hee the operating instructions an all the
safety notes these contain
•Any form of unauthorize tampering or alteration in-
si e the evice
•Use of the evice in environments or con itions for
which it is not suite
•Use of the evice with an unsuitable power supply
an / or in conjunction with unsuitable peripheral
equipment
•Use of the evice for any purpose other than that for
which it is inten e
•Damage cause by electrostatic ischarge or light-
ning.
DANGER Risk of fatal injury caused by dangerously high voltage
Such risks may occur in the following circumstances :
•Use of the evice with an unsuitable power supply an
/ or in conjunction with unsuitable peripheral equip-
ment
•Damage cause by electrostatic ischarge or lightning
•Do not run sensor lines in the vicinity of high-voltage
power cables.
•Before you touch any sensor lines, ensure that all stat-
ic electricity has been ischarge .
DANGER Warning - explosive atmospheres or substances
In the vicinity of various fuels or chemicals there is a risk of ex-
plosion.
Do not use the evice in the close vicinity of blasting work or
filling stations!
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Special notes on use
4.1 Special notes on use
•If the evice is brought into the work-room from a col environment
there is a risk that con ensation might form on the electronics. In
measuring operations involving thermocouples pronounce changes in
temperature may cause substantial measuring errors. You are a -
vise therefore to wait until the evice has a juste to the ambient
temperature before starting to use it.
•Before using the mains a apter make sure that the mains voltage is
suitable.
•Be sure to observe the maximum loa capacity of the sensor power
supply.
•Sensors with their own integrate power supply are not electrically isol-
ate from one another
4.2 Handling batteries / rechargeable batteries correctly
When inserting batteries / rechargeable batteries ensure that
these are correctly polarize .
If the evice will probably not be nee e for a relatively long
perio of time or if the batteries are empty, remove the batteries;
this will prevent battery aci leaking onto the evice an am-
aging it.
Rechargeable batteries shoul be recharge as an when ne-
cessary.
You shoul never attempt to recharge an or inary (non-re-
chargeable) battery; it may explo e !
Batteries / rechargeable batteries must never be short-circuite
or thrown onto the fire.
Batteries / rechargeable batteries are special waste an must
not be iscar e together with normal omestic waste.
5. IN RODUC ION
The ata logger ALMEMO® 2690-8 is a new instrument from the unique
pro uct range of measuring evices that are all equippe with the ALMEMO®
connector system, which has been patente by Ahlborn GmbH. The intelligent
ALMEMO® connector provi es important a vantages with regar to the con-
nection of sensors an peripherals as all parameters are store in an EEP-
ROM within the connector. As a result, the programming that usually has to be
performe for the connection is not require . All sensors an output mo ules
ALMEMO® 2690-8 9

5. Intro uction
can be connecte to all ALMEMO® measuring evices in the same way. The
operation an programming is i entical with all units. Therefore, all of the AL-
MEMO® measuring system items liste below are escribe , in etail, in a sep-
arate ALMEMO® manual that is supplie with every evice:
Detaile escription of the ALMEMO® system (manual section 1)
Overview of the evice functions an measuring ranges (manual section 2)
All sensors with basic principles, operation, technical ata (man. section 3)
The options for connecting existing sensors (manual section 4)
All analog an igital output mo ules (manual section 5.1)
The interface mo ule RS232, fiber optics, Centronics (manual section 5.2)
The entire ALMEMO® networking system (manual section 5.3)
All functions an their control via the interface (manual section 6)
A complete interface comman list with all print outputs (manual section 7)
These operating instructions only cover features an controls that are specific
for a certain evice. As a result, many sections will often provi e a note refer-
ring to the more etaile escription within the manual (man. sect. x.x.x).
5.1 Functions
New ata logger ALMEMO® 2690-8A now comes fitte with an 1024-KB EEP-
ROM sufficient for some 200,000 measure values, a low-power A/D convert-
er, an integrate charge circuitry for recharging the batteries. The measuring
possibilities are virtually unlimite ; there are 5 electrically isolate measuring
inputs suitable for all ALMEMO® sensors, or 20 channels in the sensor con-
nectors an 4 evice-internal function channels - with over 70 measuring
ranges. For operation purposes the evice incorporates an LCD graphics is-
play an a softkey keypa with cursor block. The isplay can be a apte by
means of configurable user menus to suit any application. Two output sockets
allow for connecting any ALMEMO® output mo ules, for example, the igital in-
terface, memory car , analogue output, trigger input or alarm contacts. Several
evices can be networke by simply connecting them with network cables.
5.1.1 Sensor Programming
The measuring channels are automatically programme by the ALMEMO®
connectors. However, the user can easily complete or mo ify the programming
via keyboar or via interface.
Measuring Ranges
There are correspon ing measuring ranges for sensors with a non-linear char-
acteristic such as 10 thermocouple types, Ntc an Pt100 sensors, infrare
sensors, an flow sensors (rotating vanes, thermoanemometers, pitot tubes).
Humi ity sensors are available with function channels that also calculate hu-
mi ity ata such as ew point, mixture ratio, vapour pressure an enthalpy.
Even complex chemical sensors can be use . The acquisition of measure
10 ALMEMO 2690-8