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3 Function

Sensor 

Used to measure Salt concentration, TDS level, and Temperature. This

area is waterproof.

(ON/OFF) Key

Used to turn the power on and off. After use, the power turns off auto-

matically within one minute.

(MODE) Key

Measurement Mode Selection:

Use the Mode button to select the measurement mode: Salt concentra-

tion in percent (%), Total Dissolved Solids (TDS) in ppm or
Temperature in °C or °F. When the power is turned on, the default
mode is the Salt %.

Repeatedly press the Mode button to switch between each display.

Switching Between Celsius and Fahrenheit:

The Mode key is also used to switch between degrees C and F. When

the temperature is displayed, press and hold the Mode button until the
display changes to °C or °F depending on which is currently displayed.

Hold / CAL Key

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.

4

www.

.com

[email protected]

1.800.561.8187

Содержание 390a

Страница 1: ...390a Digital Salt TDS Meter www com information itm com 1 800 561 8187 ...

Страница 2: ...cations 1 Precautions 2 Overview 3 Functions 4 LCD Symbols 5 Specifications 5 Measuring Salt TDS and Temperature 6 Battery Replacement and Troubleshooting 7 Definition of Total Dissolved Solids TDS 8 www com information itm com 1 800 561 8187 ...

Страница 3: ...ods Health Monitor the amount of salt intake Water Filtration Test for TDS to determine performance level of filtra tion systems HVAC Test condensate water in cooling tower and humidifier reservoirs to prevent bacterial growth and drain line corrosion Reduce water and chemical consumption in boilers and cooling tow ers Test TDS levels in make up water to prevent scale formation corro sion and embr...

Страница 4: ...mpt to disassemble or modify this product If the sensor is exposed to temperatures below 0 C 32 F or above 100 C 212 F for an extended period of time damage may occur Please wash the sensor using a neutral detergent and soft cloth or sponge before and after use After rinsing fully with water wipe the sensor softly using dry cloth or tissue and always keep dry while not in use While measuring make ...

Страница 5: ... Off Button Mode Button Hold Cal Button LCD Display Sensor Factory Probe Access Do not open Battery compartment Unscrew to change batteries The 390a uses two CR2032 batteries www com information itm com 1 800 561 8187 ...

Страница 6: ...is the Salt Repeatedly press the Mode button to switch between each display Switching Between Celsius and Fahrenheit The Mode key is also used to switch between degrees C and F When the temperature is displayed press and hold the Mode button until the display changes to C or F depending on which is currently displayed Hold CAL Key Used to freeze the measured value during a test or perform calibrat...

Страница 7: ...cations Salt measurement range 0 to 5 0 Accuracy 0 1 to 2 0 2 2 to 5 0 3 Temperature measurement range 32 F to 212 F 0 C to 100 C Accuracy 50 F to 86 F 10 C to 30 C 2 F 1 C 50 F 86 F 10 C 30 C 4 F 2 C TDS Range 0ppm to 2000ppm Accuracy 20ppm Power Supply CR2032 battery 2 pcs Battery life Approximately 6 months based on 3 uses per day Size 215 L 26 W x 30 D mm 0 7 1 3 10 0 Weight 57g 2oz including ...

Страница 8: ...h between C F units when tempera ture is displayed press and hold the MODE key until the display changes 2 Pushing the HOLD CAL switch will freeze the display and HOLD appears on the display Remove the salt meter from the sample and after confirming the measured value press the HOLD CAL switch to deactivate display hold 3 Wash the sensor with a neutral detergent using a soft cloth or sponge each a...

Страница 9: ...ce Replace batteries or not working life of batteries Unstable readings Contamination of Clean the sensor area sensor 8 Calibration 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...

Страница 10: ...ins 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 TDS is an indicator used for wastewater analysis and measuring min eral content of water 8 www com information itm com 1 800 561 8187 ...

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