Milwaukee EC40 Instruction Manual

INSTRUCTION MANUAL
EC/TDS Nutrient Meter

PRELIMINARY EXAMINATION

Thank you for choosing Milwaukee Instruments!
While taking out the meter from the packaging, make sure
that it was not damaged during shipping. Please notify your
closest Milwaukee office if it was damaged.
The EC40 is delivered in a plastic tube and is supplied complete
with:
ÂÂ3 x 1.5V AA batteries (included)
ÂÂInstrument quality certificate
ÂÂUser manual
Note: Keep all packing material until you have verified that the
instrument works correctly. Defective or damaged items must
be returned in their original packing material.

GENERAL DESCRIPTION

The EC40 Nutrient stick is designed to measure the EC
(conductivity) of the nutrient solutions used in agriculture and
hydroponic applications. It features a visual alarm that blinks if the
measured value is above the set point. The EC40 is built in a
compact, waterproof and floating casing.
EC40
ÂÂReadings are displayed on an easy to read graph bar with 20
LEDs.
ÂÂThe readings are displayed in four measuring scales: CF, EC,
PPM500 and PPM700.
ÂÂWhen the reading is out of range, the top or bottom LED blinks.
ÂÂThe alarm set point can be easily adjusted.
The meter is factory calibrated and does not require any

Calibration.
The meter switches on and off automatically.

Battery level indicator activates when you insert the batteries into

the instrument.
Its compact, waterproof and floating design makes the meter

water resistant and ideal to mix the nutrient solution in the tank.
The probe is protected by a crown-shaped ring which is

detachable so it is easy to clean.
The meter is supplied with a wrist strap.

Essential operational instructions are printed on the meter.

The meter has a graphite EC probe with a built-in temperature

sensor, housed in a stainless-steel casing, which compensates
temperature in seconds.

SPECIFICATIONS

Range
Resolution
Accuracy
Calibration
Probe
Temperature
compensation
Battery type
Battery life
Measurement display
Environment
Dimensions
Weight with batteries
Casing protection

OPERATIONAL GUIDE

When immersed, the meter starts measuring automatically and
displays current Electrical Conductivity level. Auto shut-off time
is set at 20 seconds after the measurement has stabilized.

SWITCHING THE METER ON

The meter switches on when the batteries are placed inside. It
performs a self-test to identify possible LED issues. The LEDs turn
on one by one from the bottom to the top and then reverse top to
bottom. Then, the LED bar shows the voltage level of the
batteries for a few seconds. If the top LED is on it means that
batteries are fully charged. If the bottom LED is on, it indicates
low charge. In this case, please change the batteries.

FEATURES

0.2 to 4 mS/cm
2 to 40 CF
140 to 2800 ppm 0.7
100 to 2000 ppm 0.5
0.1 mS/cm
1 CF
70 ppm (factor: 700 ppm = 1 mS)
50 ppm (factor: 500 ppm = 1 mS)
± 4% of reading ± 1 resolution point
Factory calibrated
Graphite electrode in ABC + PC body
Automatic from 5.0 to 50.0 ºC
(41.0 to 122.0 ºF)
3 x 1.5V AA alkaline
about 3 years (at 10 measurements
per day)
20 blue LEDs bar
0 to 50 ºC (32.0 to 122.0 ºF);
max. RH 95%
420 mm (17") length,
30 mm (1.2") diameter
255 g. (9 oz.)
IP 67, floating