Sper scientific 850068 User manual

Pocket Conductivity/TDS Meter

Instruction Manual

Introduction

This multi-functional pen type water quality meter mea-

sures conductivity and total dissolved solids (TDS) to deter-

mine water quality. The unit has auto range recognition, ATC

and automatic shut off if idle for 2 minutes. This compact unit

weighs less than 27 grams, is 6” in length and easily ts into

a shirt pocket or lab coat pocket.

Features

• Reads Conductivity, TDS and Temperature (°C/°F)

• Automatic temperature compensation (ATC)

• Pure titanium probe, rust and corrosion resistant

• Exposed stainless steel temperature sensor for wider tem-

perature range, faster response and accuracy

• Water resistant keypad with easy single button operation

Specications

Conductivity range 0-9999 µS/cm Battery 1.5V x 2 AG13

button

TDS range 0-9999 ppm Operating current < 1 mA

Temperature range 0-80°C (32-176°F) Product Weight 26.5 grams

Resolution 1 ppm, 1µS/cm Product size 6” x 1” x 0.63”

Accuracy +/-2% FS

Button Function

1. Turn on: Press the button to turn on.

2. Measurement status: Press the button to switch measure-

ment display interface.

3. Hold function: Double press the button to lock all values,

and double press again to unlock.

4. Shut down: Press and hold the button for about 2 seconds

to shut down (Automatic shut-down after 2 minutes).

Instructions

1. When rst using the unit, open the battery compartment

and remove the insulation strip to activate the batteries

(Figure 1).

2. Remove the pen (probe) cap and press the button to select

TDS/Conductivity function (ppm, µS/cm).

3. Immerse the probe end of the pen into the water sample,

and gently stir the pen in a circular motion. Make sure

the probe water level does not go above the immersion line

marked on the unit (Figures 2,3).

4. When the reading is stable (after about 5 seconds), read

the value of the display, or double press the button to hold

the value.

5. After use, remove from water, gently shake the probe, wipe

the end with soft cloth, replace cap and turn off the power.

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