Milwaukee EC40 User manual

INSTRUCTION MANUAL
EC40
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:
3 x 1.5V AA batteries (included)
Instrument quality certificate
User 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.
FEATURES
Readings are displayed on an easy to read graph bar with 20
LEDs.
The readings are displayed in four measuring scales: CF, EC,
PPM500 and PPM700.
When the reading is out of range, the top or bottom LED blinks.
The 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
0.2 to 4 mS/cm
2 to 40 CF
140 to 2800 ppm 0.7
100 to 2000 ppm 0.5
Resolution
0.1 mS/cm
1 CF
70 ppm (factor: 700 ppm = 1 mS)
50 ppm (factor: 500 ppm = 1 mS)
Accuracy ± 4% of reading ± 1 resolution point
Calibration Factory calibrated
Probe
Graphite electrode in ABC + PC body
Temperature
compensation
Automatic from 5.0 to 50.0 ºC
(41.0 to 122.0 ºF)
Battery type 3 x 1.5V AA alkaline
Battery life about 3 years (at 10 measurements
per day)
Measurement display 20 blue LEDs bar
Environment 0 to 50 ºC (32.0 to 122.0 ºF);
max. RH 95%
Dimensions
420 mm (17”) length,
30 mm (1.2”) diameter
Weight with batteries 255 g. (9 oz.)
Casing protection IP 67, oating
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.

Sales and Technical Service Contacts:
Milwaukee Electronics Kft.
Alsó-kikötõ sor 11.C
H-6726 Szeged - HUNGARY
tel: [phone]
fax: [phone]
e-mail: [email protected]
Milwaukee Instruments, Inc.
2950 Business Park Drive, Rocky Mount
NC 27804 USA
Tel: [phone]
Fax: [phone]
e-mail: [email protected]
MEASUREMENT
1.
2.
3.
4.
Place the head of the probe in the nutrient solution. The meter
switches on automatically and starts measuring.
An LED light turns on once the reading has stabilized. The
readings are displayed in four measuring scales: CF, EC,
PPM500 and PPM700. If 2 LEDs are on, the measured value
is between those two values.
Continuously blinking LED/LEDs indicate that the measured
value is over the alarm set point.
The meter remains on for approximately 20 seconds. If the EC
value changes, auto shut-off time is automatically reset. The
meter stops measuring if the read value drops below minimum
value.
5. The top/bottom LED is blinking when the measurement is
over/under range.
ALARM SET UP
1. Rotate the battery cap counter-clockwise and remove it.
2. Push the SETUP button once.
3. The LED turns on and displays the last set alarm value.
4. To change the alarm value, push and hold the SETUP button.
The LED bar increases gradually. Release the button to save
the new alarm value.
5. To disable the alarm, release the SETUP button when the top
and bottom LEDs are on.
6. Put back the battery cap.
CALIBRATION
The meter is factory calibrated and does not require user
calibration.
CLEANING & MAINTENANCE
Frequent cleanings are recommended to ensure accurate
measurements.
1. Twist the crown-shaped ring 30 degrees counter-clockwise then
remove it.
2. Clean the head of the probe under running tap water.
3. If required, clean the graphite sensors with a couple drops of
dish liquid detergent, and scrub off any residue with a
toothbrush.
4. Rinse the probe under running tap water.
STORAGE
Make sure that the probe is clean and dry before storing it in its
protective packaging.
BATTERY REPLACEMENT
Milwaukee EC40 Nutrient Meter is supplied with three 1.5V AA
batteries.
Do not mix different brands of batteries.
Do not mix old batteries with new ones.
Do not put them upside down.
Please follow these steps to replace the batteries:
1. Rotate the battery cap counter-clockwise and remove it. Short
press the snap fit to release the safety gate. With the snap fit
pulled back, take out the old batteries.
2. Insert the new batteries with negative (-) end down into the
body.
3. Make sure the safety gate clicks back in place, paying attention
not to damage the internal wires.
4. Replace the battery cap. There must be no space left between
the cap and body to ensure the meter remains 100% waterproof.
RECOMMENDATIONS FOR USERS
Before using this product, make sure it is entirely suitable for your
specific application and for the environment in which it is used. Any
modification introduced by the user may compromise the
meter’s performance. For your and the meter’s safety do not use
or store the meter in hazardous environment.
WARRANTY
EC40 instrument is warranted against defects in materials and
manufacturing for a period of 2 years from the date of purchase.
This warranty is limited to repair or free of charge replacement if
the instrument cannot be repaired. Damage due to accidents,
misuse, tampering or lack of prescribed maintenance is not
covered by warranty. If service is required, contact your local
Milwaukee Instruments Technical Service. If the repair is not
covered by the warranty, you will be notified of the charges
incurred. When shipping any meter, make sure it is properly
packaged for complete protection
CERTIFICATION
Milwaukee Instruments conform to the CE European Directives.
Disposal of Electrical & Electronic Equipment. Do not treat this
product as household waste. Hand it over to the appropriate collection
point for the recycling of electrical and electronic equipment.
Disposalof waste batteries. This product contains batteries.
Do not dispose of them with other household waste. Hand them
over to the appropriate collection point for recycling.
Please note: proper product and battery disposal prevents potential
negative consequences for human health and the environment. For
detailed information, contact your local household waste
disposal service or go to www.milwaukeeinst.com.
ISTEC40 02/19