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Table of Contents
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Summary of Contents for TPI 390a
- Page 1 Digital Salt / TDS Meter 390a 1.800.561.8187 information@itm.com www. .com...
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Page 2: Table Of Contents
Contents Before Use............1 Description............1 Applications............1 Precautions............2 Overview............3 Functions............LCD Symbols............5 Specifications............ 5 Measuring Salt, TDS, and Temperature....Battery Replacement and Troubleshooting....7 Definition of Total Dissolved Solids (TDS)....8 1.800.561.8187 information@itm.com www. .com... -
Page 3: Before Use
Clean the sensor area with a neutral detergent using a soft cloth or sponge before and after use. Description The 390a measures the concentration of dissolved salt in percent and Total Dissolved Solids (TDS) in ppm. Temperature in Celsius or Fahrenheit is also measured. -
Page 4: Precautions
1. Precautions Before use please read this operation manual and observe the procedures and methods specified to ensure accurate, reliable measurements. Only the sensor area is waterproof, please be careful to avoid getting water into the body from above the probe. Use care when cleaning the instrument by using a wet cloth or tissue. -
Page 5: Overview
2. Overview Battery compartment. Unscrew to change batteries. The 390a uses two CR2032 batteries. LCD Display On / Off Button Mode Button Hold / Cal Button Factory Probe Access Do not open Sensor 1.800.561.8187 information@itm.com www. .com... -
Page 6: Functions
Used to freeze the measured value during a test or perform calibration. Please refer to section (5) and (6) for calibration instructions. While measuring press the Hold/Cal button to freeze the display. Press the button again to return the 390a to normal operation. 1.800.561.8187 information@itm.com www. -
Page 7: Lcd Symbols
4. LCD display Symbols Display Description °C / °F Indicates the temperature of the measurement sample. Indicates the salt concentration of the sample. Indicates the level of Total Dissolved Solids in ppm** HOLD Indicates the hold function is activated Indicates the batteries need replacement. Error Indicates the measurement range has been exceeded. -
Page 8: Measuring Salt, Tds, And Temperature
6. Measuring Salt, TDS, and Temperature (1) Remove the protective cap. Turn the 390a on and the salt concentration is displayed. Fully immerse the sensor into the liquid to be measured. If a solid food is being measured, break it into pieces and dilute it with water. -
Page 9: Battery Replacement And Troubleshooting
Perform calibration if readings begin to drift. 1. Press the Power button (ON/OFF). 2. If necessary, press the Mode button to set the 390a to % Salt mode. 3. Put the sensor into 0.9% saline solution. (Make sure the sensor does not contact bottom or sides of the calibration sample) 4. -
Page 10: Definition Of Total Dissolved Solids (Tds)
Appendix A Definition of TDS (Total Dissolved Solids) TDS is the sum of all inorganic particulate material. Water contains a variety of minerals and salts, such as calcium, magnesium, carbonate, chloride and nitrate etc. TDS is the parameter used when measuring the total sum of all these compounds in water.
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