Sper Scientific 850039 Conductivity TDS Meter - Datalogging - Manual (Page 5)

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3. MEASUREMENT PROCEDURES: See page 4 for button locations.
Factory Preset Meter Defaults: Conductivity (uS, mS), °C, Temperature Com-
pensation (ATC) Factor of 2% per °C, Auto Range, Auto Power Off, and 2-
Second Data Logger Sampling Time. To change default settings, see
"ADVANCED ADJUSTMENT PROCEDURES" on page 6.
3-A. General Measurement
 Insert the PROBE PLUG (17) into the PROBE INPUT (12) and turn the
meter on pressing the POWER (2) button.
 Hold the PROBE HANDLE (19) and immerse the SENSOR HEAD (18)
into the solution sample to be measured. Gently shake the probe to re-
lease any air bubbles.
 The sample's conductivity mS (uS) and the temperature are displayed.
 See item 4-F, page 8 for instructions on changing between °C and °F.
 See item 4-G, page 8 for instructions on changing the Automatic Tempera-
ture Compensation (ATC) Factor.
 The instructions for measuring TDS are the same as the instructions for
measuring Conductivity. See item 4-H, page 8 for instructions on chang-
ing between Conductivity (uS, mS) and TDS (PPM) measurement.
 To display the time (h-m-s) or date (y-m-d) during use, press the CLOCK
(7) button.
 Press the POWER (2) button to turn the unit off.
3-B. Auto and Manual Range Modes
 "Auto Range" or "Manual Range" is displayed under
the measurement.
 To switch to Manual Range, press and hold the
RANGE
(6) button for at least 2 seconds. When the
meter beeps, release the RANGE (6) button.
 Press the RANGE (6) button again to switch between the available ranges:
200uS, 2MS 20 mS and 200 mS.
 If the out-of-range indicator "- - - - -" appears at the bottom of the display,
select a lower range, and if it appears at the top of the display, select a
higher range.
 To switch to Auto Range, press and hold the RANGE (6) button for at least
2 seconds. When the meter beeps, release the RANGE (6) button.
3-C. Data Hold
 While measuring, press the HOLD (3) button to freeze the displayed value.
 "HOLD" and the measurement are displayed.
 Press the HOLD (3) button again to exit
.
1.46
20.00 mS
Auto Range
66.5°
F