Subscribe to Our Youtube Channel
Related Manuals for Novasina LabTouch-aw
Summary of Contents for Novasina LabTouch-aw
- Page 1 aw-Messgerät / aw measuring instrument / Appareil de mesure aw Operating Instructions Leading the market thanks to INNOVATIVE solutions and sensor technology...
- Page 2 © 2019 by Novasina AG Technische Änderungen vorbehalten Technical data subject to modification Sous réserve de modifications techniques...
- Page 3 Change Acoustic Signals Reset to Default Values Update of the System Intensity of the Backlight Touch Screen Calibration Upgrade the LabTouch-aw Communication Interface 10. Maintenance 0.1. Cleaning of the instrument 10.2. Cleaning of the aw-measurement cell „CM-2“ 10.3. Cleaning of the Infrared „IR“ sensor 10.4.
-
Page 4: Important Notes
(water activity) measuring. To get the most out of all the possibilities of your Novasina LabTouch-aw and to ensure safe and reliable operation, please read these operating instructions carefully before setting the unit into operation. -
Page 5: General Product Description
Novasina has been developing special electrolytic sensors that stand out for such unique properties for more than 50 years. The integrated, resistive electrolytic LabTouch-aw sensor is based on the new chemical substance the Novasina „Novalyte“, which achieves the required... -
Page 6: System Architecture
System Architecture The LabTouch-aw consists of modular assemblies in combination with the unique resistive-electrolytic Novasina measurement technology, which is part of the aw-sensor. The aw-measurement signal is electronically processed tog- ether with the IR (infrared)sample temperature measurement and an additional temperature monitoring in the instrument's body. - Page 7 White pre-filter in front of the electrolytic Infrared temperature sensor measurement cell (sensor) for sample surface temp. measurement Sealing to eliminate air ex- Metal indentation for filled change with environment sample cup insertion The inner part of the measurement chamber is equipped with all the characteristic sensors USB connector for PC and Nova- log MC communication Power supply connector...
-
Page 8: Scope Of Delivery
Some samples do have volatiles components / ingredients thus the measuring cell has to be protected from damaging, gaseous substances. This is done by various filter systems which are provided by Novasina. To select an appropri- ate filter system, consult the Novasina protection filter systems data sheet or contact your local Novasina distribution partner. -
Page 9: Putting Into Operation
Upon receipt, please double- check if everything is present according to the scope of delivery and immediately notify your Novasina sales partner if anything is missing or broken. Do not put damaged or incomplete measuring instruments into operation. -
Page 10: Screens And Functions
Screens and Functions This chapter describes the main screens which appear on the display of the LabTouch-aw as well as the function of the symbols. Measurement Screen The measurement screen is displayed after the instrument has started up or if a measurement has been started. - Page 11 • The LED's (yellow or green) indicating the status of the measurement are displayed in the first line. • If there is a flashing, yellow-coloured LED beside the "Analy.", a measu- rement is on-going. If the green LED beside the "Stable" is activated, measurement has been finished.
- Page 12 4.1.2 Symbol SD-Card The status of the SD card is displayed as a symbol on the right side of the measurement screen footer Symbol Description Remarks No symbol SD card is not inserted SD card is inserted correctly It is allowed to remove the SD card in this status and ready for operation SD card is accessed by the SD card must no be removed, otherwise the file...
-
Page 13: Main Menu Screen
Main Menu Screen The main menu screen provides easy access to programming and measurement functions. Start functions Chamber Switch OFF Switch Status the instrument Settings to measurement screen Navigation in Sub-Menus Navigation through the sub-menus is simple and only 4 different icons are available to do it: Symbol Description... - Page 14 Symbol Description Remarks Start a measurement and switch automati- If a measurement is on-going or finished and the "Start" icon is pressed again, the cally to the measurement screen instrument will ask if you really want to start a new one as the current data will no longer be displayed Abort a measurement and switch auto- •...
- Page 15 Menu "Chamber Settings" All chamber related settings as stable observation time or calibration can be done in this menu. Functions of the icons on the main menu screen once the icons are pressed: The table below should give an overview about the available functions. Detailed descriptions will be given thereafter.
-
Page 16: Temperature Control
Most of the samples are significantly influenced by temperature. For this reason, the instrument is equipped with a simple temperature-controlled measurement chamber. As opposed to the LabMaster-aw, the LabTouch-aw does not offer a cooling function which just allows measurement temperatures at least +2°C but max. -
Page 17: How To Perform Measurements
temperature in the measurement screen turns red in this case and the user will be noticed in the status bar by a respective hint. • If the environmental temperature is changing during an on-going measurement in a way that the programmed temperature can not be reached, the displayed temperature turns red as well and the instrument will not reach stability, means the measurement can not be finished. -
Page 18: Stability System
Even as different, more or less successful approaches are present in the market, Novasina has its own, unique equilibrium detecting system which is the most accurate and reliable one, proven by hundreds of satisfied customers. - Page 19 To make your decision easier, you can find some recommended settings in the table below Please feel free to contact the responsible Novasina distributor in your area or Novasina AG in Switzerland (www.novasina.com or lab@novasina.ch) if you need assistance in selecting an appropriate stability time for your sample.
- Page 20 Product Recommended settings Production Line with reduced accuracy ex- Quick pectation but need for fast measurements Powders, Jam, Tomato Sauce Dried Meat, Fruits, Cereals Chocolate, Fish, Cheese, Bakery Products, Fresh Meat, Butter The determination of the most appropriate stability time can be done as following •...
-
Page 21: Logging Functions
Logging Functions This chapter describes the logging functionalities of the LabTouch-aw Automatic Logging of the Last 10 Measurements The last 10 measurements are logged automatically. This feature is very use- ful if the measurement value has not been written down before opening the chamber since opening leads to a display refresh. - Page 22 Novalog MC software or a standard text editor. The use of the Novasina Novalog MC software has the advantage that a digital signature is used on the protocol which allows the recognition of unauthorized changes of the data.
-
Page 23: Sensor Calibration
NovalogMC Sensor Calibration The electrolytic sensor can be verified at any time by using the Novasina SAL-T standards which are included in the delivery or which have been bought through the local Novasina distributor. These reusable standards generate defined and reproducible humidity, respectively aw-values. -
Page 24: Calibration And Verification
Publishing Company Huntingon, New York Factory Calibration, Delivery Status Every LabTouch-aw as well as every new replacement sensor "CM-2 or CM-3" is delivered with a factory calibration at 7 points: 0.11, 0.33, 0.58, 0.75, 0.84, 0.90 and 0.97, including a factory certificate. For verification and possible calibration there are 4 different SAL-T salt tablets included in the delivery but additional ones can be bought if necessary. -
Page 25: Deleting Calibration Points
If a complete calibration is required but you do not have all of the supplied SAL-T standards available. Keep in mind that a deleted point is much better than one calibrated the wrong way. The LabTouch-aw calculates the missing point from the two nearest ones (mostly one above and one below of the deleted point). -
Page 26: Sensor Protection
Go to "Chamber settings" -> "Sensor calibration..." -> "Info calibration points" and select the requested calibration point. The following information is dis- played. Important: Please provide this information as well if you ask Novasina to support a calibration problem. •... - Page 27 • If a sensor protection password has already been set, it has to be ente- red ("Please enter previous password!"). Note: • The factory set password is 8808. • A successful change of the password is confirmed by the instrument. Automatic Notification for Calibration This feature offers to possibility to indicate the user of a required calibration.
-
Page 28: Additional Functions
(i.e. loss of power etc.).. • Please use only files which are distributed by your official Novasina repre- sentative. The use of other files can irreversibly damage the instrument and cause loss of warranty. -
Page 29: Touch Screen Calibration
"Yes" • The reset code from Novasina remains valid until password is reseted or once athe valid code has been entered. It is a single-use code, thus if password is forgotten again, a new code has to be ordered. -
Page 30: Maintenance
Best way is to use a wet tissue as well to remove dirt and dust. Caution ! Before cleaning, switch off the LabTouch-aw and disconnect it from the mains. Cleaning the aw-measurement cell „CM-2 or CM-3“ 10.2. - Page 31 Novasina provides the following protection filters for the LabTouch-aw : • eVC-21 filter : Chemical filter: protects against short-chained organic acids as acetic and formic acid and other carboxylic acids (butyric acid etc) and oxidizing agents as hydrogen peroxide and chlorine and as well againts diluted sulfur dioxide •...
- Page 32 Humidity sensors are subject to certain ageing phenomena, which manifest themselves in deviations from the original value. Due to this reason, every sensor undergoes a 3 month ageing proces at Novasina so that the drift can be reduced to the lowest level possible. Nevertheless, slight deviations by time are inevitable but they can be compensated by recalibration.
- Page 33 : • Do not let fall neither the sensing element nor the LabTouch-aw and strictly avoid shock vibrations • Do not perform a measurement if the white pre-filter is not mounted.
- Page 34 LabTouch Menu Structure Message / Problem Cause / Reason Measure(s) (explanation see next page) Error message during system See chapter 9.3 update A protocol print-out by pressing the print button Insert a SD-card or connect the instru- has been performed but no media (SD-Card or ment to a PC with direct connection to a computer with NovalogMC) is running Nova-...
- Page 35 No response from the measurement chamber! #7, #1, #8, #4 A firmware update of the chamber is required as the current settings are outdated which results in communication failure. The master firmware is outdated and needs to be updated, thus no communication with the measure- ment chamber possible Due to a CRC error, the system was booted from a #9, #4...
- Page 36 The measures should be performed according the sequence as listed in the row "Measure(s)" Send a picture of the displayed message and firmware version to your local Novasina representative Turning the instrument off and then on again. If an ordinary turn-off is not possible, please disconnect the power connector from the instrument for at least 5 seconds.
- Page 38 Notizen/Notes/Notes...
- Page 39 Novasina – Swiss Quality, Flexibility and Competence Since its establishment more than 60 years ago, the Novasina company has specialised in the ac- curate measuring of air and material humidity. The basis of this was the world’s first, self-developed electronic measuring sensor for measuring humidity. This technology is based on the resistive electrolytic measurement principle.
Need help?
Do you have a question about the LabTouch-aw and is the answer not in the manual?
Questions and answers