Adwa AD33 Manual

Adwa Measuring equipment AD33

Read below 📖 the manual in Italian for Adwa AD33 (4 pages) in the Measuring equipment category. This guide has been helpful for 25 people and has been rated 4.5 stars on average by 2 users

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USER MANUAL

AD33 • AD35

Waterproof EC Testers

Dear Customer,

Thank you for choosing an Adwa product.

Please read carefully this manual before start-

ing operations.

These instruments are in compliance with the

EMC Directive 89/336/EEC and Low Voltage

Directive 73/23/EEC for electrical equipments.

For additional technical information, please

e-mail us at sales@adwainstruments.com.

INTRODUCTION

AD33 and AD35 are waterproof EC testers.

The housing has been completely sealed against

humidity.

All EC readings are automatically temperature

compensated, and temperature values can be

displayed in °C or °F units.

EC calibration is automatic at one point, while

temperature range is factory calibrated and can

only be adjusted by the user.

The AD33P probe supplied with the meters,

is interchangeable and can be easily replaced

by the user.

The encapsulated temperature sensor allows

fast and accurate temperature measurement

and compensation.

To prolong battery life, these models are pro-

vided with an auto-off feature that turns them

off after 5 minutes of non-use.

Moreover, when batteries become too weak to

ensure reliable readings the meter automatically

turns off.

Each meter is supplied complete with:

• AD33P EC probe

• 4 x 1.5V batteries, button type

• User manual

FRONT PANEL & DISPLAY

1. Dual line LCD

2. ON/OFF / MODE button

3. HOLD button

4. EC probe & temperature sensor

5. Probe body

6. Battery compartment (inside)

7. CAL button

8. Clip holder

1. HOLD indicator

2. Calibration mode indicator

3. Secondary LCD level with measure units

4. Primary LCD level

5. Measurement unit for primary LCD level

ISTAD35 06/17

µS

ELECTRODES & SOLUTIONS

Range

0.0 to 60.0 °C /

32.0 to 140.0 °F

0 to 1999 µS/cm (AD33)

0.0 to 199.9 µS/cm (AD35)

Resolution

0.1 °C / 0.1 °F

1 µS/cm (AD33)

0.1 µS/cm (AD35)

Accuracy

(@ 25 °C / 77 °F)

±0.5 °C / ±1.0 °F

±2 % f.s. (EC)

Calibration

EC: automatic, 1 point

Temperature: adjustment

Probe

AD33P (included)

Battery Type /

Life

4 x 1.5V button type

Approx. 150 hours of use

Auto-off

After 5 minutes of non-use

Environment

0.0 to 50.0 °C

(32.0 to122.0 °F) RH 100 %

Dimensions /

Weight

175.5 x 39 x 23 mm/100 g

AD33P

Spare EC probe for

AD33 and AD35

AD70031P

1413 µS/cm EC standard

solution sachet, 25 x 20 ml

AD7031

1413 µS/cm EC standard

solution, 230 mL bottle

AD7033

84 µS/cm EC standard

solution, 230 mL bottle

TECHNICAL DATA

Turn the meter on

• Press the ON/OFF button. All the used seg-

ments will be visible for one second (or as

long as the button is pressed), then the meter

enter normal measurement mode.

Taking Measurements

• Submerge the probe in the solution to be

tested while stirring it gently.

• The EC value automatically compensated

for temperature is shown on the primary

LCD level while the secondary one shows

the sample temperature.

Note: Before taking any measurement, make

sure the meter has been calibrated.

Freeze the display

• From measurement mode,

press the HOLD button. The

H tag lights up and the read-

ing is frozen on the LCD.

Press any button to return to

normal mode.

Change the temperature unit (°C/°F)

• To change the temperature measure unit,

press the HOLD button for 2 seconds.

Turn the meter off

• From measurement mode, press the ON/OFF

button.

Note: If measurements are taken in different

samples successively, rinse the probe

thoroughly to eliminate cross-contam-

ination. After cleaning, rinse the probe

with some of the sample to be measured.

OPERATIONAL GUIDE

For better accuracy, frequent calibration of the

tester is recommended. In addition, calibra-

tion should be performed whenever the probe

is replaced, after testing aggressive chemicals

and where high accuracy is required.

Calibration Procedure

• From normal measuring

mode, press and hold the

CAL button for 2 seconds

and the CAL message ap-

pears on the LCD.

• Release the button and im-

merse the probe in a proper

calibration solution. The

CAL tag lights up to indicate

that the meter is in calibration

mode.

Note: The calibration solution value must be

within the meter measurement range.

• Wait a few seconds for the reading to

stabilize, then use the CAL and HOLD

buttons to set the solution value (CAL to

increase the value, HOLD to decrease it).

• The calibration will be automatically

performed.

• To conrm thecalibration,

press ON/OFF for 2 seconds.

The LCD will show the

“Sto” message and then

return to normal operation.

• To quit the procedure with-

out saving, press the ON/

OFF button. The LCD will

show the “ESC” message and

then return to normal opera-

tion.

TEMPERATURE ADJUSTMENT

These meters are factory calibrated for tempera-

ture readings, and the user can only perform

an adjustment using an accurate reference

thermometer.

Procedure

• From normal measuring

mode, press for 2 seconds

the CAL (rst) and HOLD

buttons until the CAL mes-

sage on the LCD is replaced

by the temperature reading.

• Release the buttons and immerse the probe

and an accurate reference thermometer into

the sample solution.

• Read the temperature measured by the

reference thermometer.

• Wait for a few seconds, for the reading to

stabilize on the tester, then adjust it accord-

ingly with the thermometer, using the CAL

and HOLD buttons (CAL to increase the

value, HOLD to decrease it).

• To conrm press ON/OFF for 2 seconds.

The LCD will show the “Sto” message and

then return to normal operation.

• To quit the procedure without saving, press

the ON/OFF button. The LCD will show the

“ESC” message and then return to normal

operation.

When the batteries become too

weak to ensure reliable read-

ings, the “Eb” message appears

on the LCD, then the meter

turns off.

Batteries must be replaced.

Unscrew and release the probe body. Take out

the battery compartment and carefully replace

all four batteries while paying attention to their

polarity.

Reattach and tighten the probe body properly

to ensure a watertight seal.

BATTERY REPLACEMENT

PROBE REPLACEMENT

The probe can be easily replaced by unscrewing

the body as shown below.

EC CALIBRATION

Product Specifications

Brand:	Adwa
Category:	Measuring equipment
Model:	AD33

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