Full Product Manual

Operating Instructions
Power ON/OFF
Turn the meter on by pressing the POWER button. To turn the meter off,
press, hold and release the POWER button for 2 seconds.
Note: This meter can be powered by either six (6) "AA" batteries or AC
adapter (sold separately).
Selecting Measurement Modes
The R3100SD offers 3 measurement modes:
• Conductivity
• Total Dissolved Solids
• Salinity (Salt)
1. When the meter is on, press the
button to toggle between "Cd"
for conductivity measurements, "TDS" for total dissolved solids
measurements & "SALt" for salt measurements.
2. Release the
button to conrm selection.
Note: At start up, the meter's default settings are:
• Display Unit: Conductivity
• Temperature Unit: °C
• Temp. Compensation Factor: 2.0% per °C
• Auto range: ON
• Auto power off: ON
• Datalogger Sampling Time: 2 seconds
Conductivity Measurement
1. Connect the conductivity probe into the input jack.
2. Select "Cd" function (see Selecting Measurement Modes for details).
3. Hold the probe handle and fully immerse the probe sensor into the
solution under test.
4. Shake the probe to let the probe's internal air bubble drift out from
under the sensing head.
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REED Instruments
1-877-849-2127 | [e-mail] | www.reedinstruments.com