User guide

76
EC Calibration 1 point, with 6 memorized buffers
84,1413,5000,12880,80000,111800 μS/cm
NaCl Calibration 1 point, with HI 7037 buffer (optional)
Temperature 2 point, at 0 and 50°C
Calibration (plus ±1°C adjustment)
Temperature Automatic or Manual from 0 to 60°C
Compensation (can be disabled to measure actual conductivity)
Temperature Adjustable from 0.00 to 6.00 %/°C (EC and
Coefficient TDS only); default value is 1.90%/°C
TDS Factor Adjustable from 0.40 to 0.80 (default 0.50)
Probe HI 76309 4-ring probe with K=1 (nominal)
and built-in temperature sensor (included)
Auto-off After 5 minutes of non-use (can be disabled)
Power supply 4x1.5V AA alkaline type batteries (included),
or 12 Vdc adapter
Casing IP 67
Environment 0 to 50°C (32 to 122°F); RH max 100%
Dimensions 196 x 80 x 60 mm (7.7 x 3.1 x 2.4")
Weight 500 g (1.1 lb.)
CONNECTIONS
Remove the back cover, unwrap the batter-
ies and install them while paying attention
to the polarity. Replace the back cover.
Alternatively, connect the voltage adapter to
the power socket.
Connect the conductivity probe to
the DIN connector located on the
top of the instrument. Tighten the
threaded ring.
Make sure the probe sleeve is prop-
erly inserted, as shown in the
figure.
Press the ON/OFF key to turn the meter on.
Immerse the probe into the solution to be tested.
The sleeve holes must be completely submerged.
Tap the probe repeatedly to remove any air bubbles
that may be trapped inside the sleeve.
If needed, press the RANGE key repeatedly until
the desired range (EC, TDS or NaCl) is selected on
the LCD.
Allow for the reading to stabilize. The upper
LCD displays the measure in the selected
range while the temperature is displayed on
the lower LCD.
Notes:
I If the meter displays "----" the reading is out of range.
II If the reading is unstable, the stability indicator " " blinks.
III The "gm" indication on the LCD means "g/L".
IV Make sure the meter is calibrated before taking measurements.
V If measurements are taken successively in different samples, it
is recommended to rinse the probe thoroughly with deionized
water before immersion in the samples.
VI To maximize battery life, the meter automatically switches off after 5
minutes of non-use. To reactivate the instrument press ON/OFF.
This feature can be disabled by entering the setup mode and
selecting the "AoF" item (see "Setup" section for details).
VII TDS reading is obtained multiplying the EC reading by the
TDS factor, which has a default value of 0.50. It is possible to
change the TDS factor in the 0.40 to 0.80 range by entering
the setup mode and selecting the "tdS" item (see "Setup"
section for details).
VIII When the use of an alternate function (FNC, CFM, GLP,FIXED,TC
and CALT) is requested, press and hold the ALT key first, and
then the second key.
TAKING MEASUREMENTS