Subscribe to Our Youtube Channel
Related Manuals for VOLTCRAFT LWT-100
Summary of Contents for VOLTCRAFT LWT-100
- Page 1 Operating manual LWT-100 Conductivity measuring device Permanently connected graphite 2-pole measuring cell Waterproof Precise and fast...
-
Page 2: Table Of Contents
Qualified personnel.......................... 8 Description ............................ 9 Scope of delivery .......................... 9 Job description............................ 9 The product at a glance ........................ 10 The LWT-100............................ 10 Display elements .......................... 10 Operating elements .......................... 10 Bases for measurement ........................ 12 Conductivity principles ........................ 12 Conductivity measurement ......................... - Page 3 Table of contents Error and system messages...................... 23 Disposal............................. 24 Technical data........................... 25 Service ............................... 26 12.1 Manufacturer............................ 26 B-H87.0.01.DB214-1.0 3 / 26...
-
Page 4: Legal Address Of The Manufacturer
1 | Legal address of the manufacturer LWT-100 1 Legal address of the manufacturer Conrad Electronic SE Klaus-Conrad-Str. 1 D-92240 Hirschau http://www.conrad.com WEEE reg. no. DE 28001718 4 / 26 B-H87.0.01.DB214-1.0... -
Page 5: About This Documentation
LWT-100 About this documentation | 2 2 About this documentation 2.1 Foreword Read this document carefully and familiarise yourself with the operation of the product before you use it. Keep this document ready to hand and in the immediate vicinity of the product so that it is available to the personnel/user for reference at all times in case of doubt. -
Page 6: Further Information
2 | About this documentation LWT-100 Outcome of an action Result, consequence or effect of an instruction. Emphases In order to simplify legibility and provide a clearer overview, various sections / informa- tion are emphasised. – 1234 Display elements – Mechanical controls –... -
Page 7: Safety
LWT-100 Safety | 3 3 Safety 3.1 Explanation of safety symbols DANGER This symbol warns of imminent danger which can result in death, severe bodily injury, or severe property damage in case of non-observance. CAUTION This symbol warns of potential dangers or harmful situations which can cause damage to the device or to the environment in case of non-observance. -
Page 8: Intended Use
3 | Safety LWT-100 CAUTION Erratic behaviour! On suspicion that the product can no longer be operated without danger, it must be decommissioned and prevented from recommissioning with appropriate labelling. The safety of the user can be impaired by the device if, for example, if it shows visible damage, it no longer works as specified or if it was stored for an extended period of time under unsuitable conditions. -
Page 9: Description
LWT-100 Description | 4 4 Description 4.1 Scope of delivery Please check to ensure the completeness of the product after opening the package. You should find the following components: – Quick reference guide – Handheld measuring device, ready for operation, including batteries –... -
Page 10: The Product At A Glance
5 | The product at a glance LWT-100 5 The product at a glance 5.1 The LWT-100 LCD Display LWT-100 LWT-100 5.2 Display elements Display Battery indicator Evaluation of the battery status Unit display Display of units, if applicable, with unstable symbol... - Page 11 LWT-100 The product at a glance | 5 Function key Press briefly Freeze measurement Return to measurement display Call up next parameter Long press, 2s Open menu, frozen measurement is displayed Close menu, changes are saved B-H87.0.01.DB214-1.0 11 / 26...
-
Page 12: Bases For Measurement
6 | Bases for measurement LWT-100 6 Bases for measurement 6.1 Conductivity principles Conductivity γ Conductivity describes the capability of a material to conduct electrical current. It is also the inverse of specific resistance. The conductance is the inverse of the meas- ured resistance R. -
Page 13: Salt Content / Salinity Measurement
LWT-100 Bases for measurement | 6 place with calibration to known comparison solutions or with actual evaporation of a certain amount of liquid with measured conductivity and subsequent weight of the total dissolved solids. 6.4 Salt content / salinity measurement In SAL measuring mode, the salinity, which is the salt content of sea water, is determ- ined. -
Page 14: Temperature Compensation
6 | Bases for measurement LWT-100 available for this purpose. In normal application conditions, semi-annual testing is re- commended; Adjustment of the measuring input [} p. 20]. A system test by the man- ufacturer is recommended in case of doubt; Calibration and adjustment service. -
Page 15: Maintenance
LWT-100 Maintenance | 7 7 Maintenance 7.1 Operating and maintenance notices NOTE The product and conductivity measuring cell must be handled with care and used in accordance with the technical data. Do not throw or strike. NOTE If the product is stored at a temperature above 50 °C, or is not used for an extended period of time, the batteries must be removed. - Page 16 7 | Maintenance LWT-100 NOTE Unnecessary screwing places the water-tightness of the product, among other things, at risk and should be avoided. NOTE Read the following handling instructions before replacing batteries and follow them step by step. If disregarded, the product could be damaged or the protection from moisture could be diminished.
-
Page 17: Operation
LWT-100 Operation | 8 8 Operation 8.1 Commissioning 8.1.1 Explanation Description The product is switched on with the On/Off button. It may be necessary to configure the product after switching on. See Configuration [} p. 17]. Prerequisite – Sufficiently full batteries are inserted in the product. -
Page 18: Configuring Parameters Of The Configuration Menu
8 | Operation LWT-100 3. By briefly pressing the Function key, you can scroll through the parameters. Select the parameter you would like to configure. 4. When you have selected the desired parameter, change the parameter to the de- sired value with the Up button and the Down button. - Page 19 LWT-100 Operation | 8 Temperature compensation TCOR Do not compensate conductivity measurement Non-linear function for natural water in accordance with EN 27888 (ISO 7888) Ground water, surface water or drinking water Reference temperature for temperature compensation TREF 25 °( Reference temperature 25 °C or 77 °F Reference temperature 20 °C or 68 °F...
-
Page 20: Adjustment Of The Measuring Input
8 | Operation LWT-100 8.2.4 Adjustment of the measuring input Description The temperature input can be adjusted with the zero point correction and the gradient correction. If an adjustment is made, you change the pre-adjusted factory settings. This is signalled with the T.OF, T.SL or S(L display text when the product is switched on. - Page 21 LWT-100 Operation | 8 Zero point correction T.OF 0.00 No zero point correction Zero point correction in °C. and/or at °F -9.00 .. -5.00 .. 5.00 9.00 Gradient correction of the temperature T.SL No gradient correction 0.00 -5.00 .. 5.00...
- Page 22 8 | Operation LWT-100 NOTE The most precise results can be achieved when the control solution temperature is ad- justed to 25 °C. With different temperatures, the table value of the corresponding tem- perature must be used as a setpoint.
-
Page 23: Error And System Messages
LWT-100 Error and system messages | 9 9 Error and system messages Display Meaning Possible causes Remedy Range switching or Measuring cell de- Wait for the transient effect ---- measured value un- fect of the controller stable Contamination or air... -
Page 24: Disposal
10 | Disposal LWT-100 10 Disposal NOTE The device must not be disposed of with household waste. If the product is disposed of, please take it to a municipal collection point, where it will be transported to a dis- posal company in accordance with requirements of hazardous goods laws. Otherwise, return it to us, freight prepaid. -
Page 25: Technical Data
LWT-100 Technical data | 11 11 Technical data Measuring range Conductivity 0 .. 2000 S/cm 0.00 .. 20.00 mS/cm 0.0 .. 100.0 mS/cm Specific resistance Salinity 0.0 .. 50.0 g/kg 0 .. 2000 mg/l Temperature -5.0 .. +105.0 °C (23.0 .. +221.0 °F) – the conductivity measur- ing cells can be exposed temporarily to temperatures of up to 100 °C and permanently to temperatures of up to 80 °C. -
Page 26: Service
12 | Service LWT-100 12 Service 12.1 Manufacturer If you have any questions, please do not hesitate to contact us: Contact VOLTCRAFT Distributed by Conrad Electronic SE Klaus-Conrad-Str. 1 92240 Hirschau, Germany Tel.: +49 9604 40 87 87 Fax: +49 180 5 312110 kundenservice@conrad.de...
Need help?
Do you have a question about the LWT-100 and is the answer not in the manual?
Questions and answers