Summary of Contents for Tintometer AQUALYTIC SensoDirect CD 24
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SensoDirect CD 24 Conductivity/TDS/Salinity Meter Operating instructions...
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Declaration of CE-Conformity The manufacturer: Tintometer GmbH Schleefstraße 8 a 44287 Dortmund Deutschland declares that this product Product name: SensoDirect CD 24 with all optional items conforms to the following regulations: EN 55 022 : 6 / 1993 class B...
Table of Contents Page Scope of delivery .............. 4 System description ............4 Connections ..............6 Display ................6 Keypad ................7 Startup ................7 Measurement ..............9 Configuration of the unit ..........1 0 ‘Unit’ ................1 0 ‘Auto Range’ - Automatic range selection ...... 1 0 Selection of temperature compensation ......
1. Scope of delivery Standard: ® • AQUALYTIC SensoDirect CD 24 • Batteries, 4*AA 1,5 V cells • Operating instructions • Carrying strap Set: ® • AQUALYTIC SensoDirect CD 24 • Batteries, 4*AA 1,5 V cells • 4 pole measuring sensor •...
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EN 27888 or in linear mode. The system is calibrated using Tintometer standard solutions. An internal memory for 20 results is integrated in the unit as standard. The memory stores location, result and temperature.
3. Connections Conductivity measuring cell 4. Display µS Main display: Result or user SAL mg/l kOhm mS prompt [SAL] Salinity, g/kg °C [mg/l] °C Total Dissolved Solids MEAS °F HOLD [kOhm] Specific Resistance (1/conductivity) %/K 1/cm kOhm · cm [mS] Conductivity ms/cm Conductivity µS/cm [µS]...
5. Operation Meas [Meas] Continuous measurement, (standard setting) Hold Store [Hold] Retain of current result [On/Off] On/Off Leaf through menu or Menu [L] [M] memory or show maximum or minimum value [Cal] Calibration mode [Rcl] Display of stored results [Store] Storage of current result or acceptance of unit configuration [Menu]...
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If "bAt" appears in the upper section of the display, this means that the batteries are completely empty. Only use the matching Tintometer conductivity elec- trodes! Other electrodes may cause serious damage to the meter and the electrode.
7. Measurement Measuring mode MEAS After the unit is switched on, it is automatically in the standard measuring mode MEAS. You can “freeze” the result shown in the display by pressing the [Hold] key. Meas If you press the [Hold] key once again, the meter swit- ches back to the continuous measuring mode.
8. Configuration of the unit To configure the unit, press the [Menu] key. Menu The first menu item appears. If you press the [Menu] key again, the display jumps to the next menu item. You can set the various parameters using the [L] [M] keys.
8.3 ‘Temperature Compensation’: Selection of temperature compensation off: no temperature compensation nLF: non-linear temperature compensation for na- tural water in acc. with EN27888 (DIN 38404). (for analysis of groundwater or surface, drin- king or ultrapure water) Lin: linear temperature compensation (for other aqueous solutions) Non-linear temperature compensation 25°C for natu- ral water is always used for measurement of total dis-...
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8.6 Input of TDS factor 0.40 ... 1.00: Conversion factor for TDS measure- ment. The conversion factor depends on the composition of the medium and needs to be determined separately for each type of water. 8.7 Cell Constant 1/cm The cell constant may change due to soiling, depo- sits or other mechanical influences on the measuring 1/cm cell.
If, however, you establish deviations during tests, you can improve measuring accuracy by performing cali- bration. Tintometer standard conductivity solutions serve as a reference. These solutions have a defined conductivity of 1413 µS/cm. Standard solutions with other conducti- vity levels may also be used to calibrate the system.
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Performing calibration Prepare electrode and calibration solution. Clean the electrode using deionised water and dry carefully. Insert the electrode in the vessel containing the cali- bration solution and stir well. Starting calibration: Press [Cal] key. ‘CAL’ appears momentarily in the display, then the pre- vious cell constant is shown briefly: You can terminate calibration at any time by pressing the [Meas] key or [Hold] key.
sage is shown and the original calibration value is re- tained. • User calibration cELL • Manufacturing calibration CELL Restoring the factory calibration setting You can set the conductivity meter back to the factory setting by simultaneously pressing the [On/Off] and [Cal] keys when you switch the system on.
As soon as you press the [Store], [Meas] or [Hold] key, the unit reverts to the corresponding measuring mode. Store Meas 10.3 Delete stored results If you press the [Store] key for longer than 2 seconds, the unit switches to the delete menu [CLR]. You can use the keys to select the desired ac- [L] [M]...
11. Error messages and troubleshooting Display Cause Remedy Weak battery vol- Insert new batteries tage, the unit will only continue to function for a short time Batteries empty Insert new batteries No display or Batteries empty Insert new batteries strange symbols Batteries incorrectly Check batteries inserted...
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Display Cause Remedy Err.7 System error Send in for repair Err.11 Value could not be Temperature outside calculated the admissible temperature measuring range Calibration Display Cause Remedy CAL.-Err.1 Value was inad- Clean electrode, missible, cell re-calibrate constant too high: If error repeated electrode defective ->...
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• Calibration: 1-point calibration with conductivity solution in the range from 1000...2000µS/cm • Nominal temperature: 25°C • Operating temperature: unit: 0 to +50°C measuring cell: -5 to 80°C (short-term to 100°C) • Memory: Measured values are stored for the ranges „conductivity“, „resistivity“, „TDS“...
• Housing: Water-tight in accordance with IP67 Integral protective plating Film keypad • Measuring cell: 4-electrode conductivity measuring cell with integrated temperature sensor NTC 10 kOhm. • Electrode material: Special graphite • Shaft material: Epoxy, Dimensions: black ø 12 mm, 120 mm long •...
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