Kett HI-520-2 User manual

Concrete and Mortar Moisture Tester HI-520-2
Operating Manual

Safety Precautions
If the safety precautions for the concrete and mortar moisture tester are not observed,
damage to property may result. Although product safety is fully considered, after carefully
reading the precautions in this manual, please use the product in a proper manner.
■Please observe the safety precautions.
Please carefully read the precautions in the operating manual.
■Do not use if broken.
Do not use if broken.
■Meaning of warning symbols.
In order to prevent damage resulting from erroneously operating the equipment, the fol-
lowing symbols are indicated in the operating manual and on the product. The following
are their meanings.
Note Items which the user must follow in order to safely use the unit.

CONTENTS
1. About the Model HI-520-2..................................................4
2. Specications .....................................................................5
3. Part names .........................................................................7
4. Display/Description of keys ................................................8
5. Battery installation ..............................................................9
6. Measurement method ......................................................10
7. Settings ............................................................................12
8. Notes regarding use and handling of the HI-520-2 ..........27

4
The HI-520-2 is a handy high-frequency moisture tester with integrated main unit and sen-
sor section. Moisture content can be displayed directly simply by pressing the unit against
the object to be measured.
The HI-520-2 also features alarm and hold functions which make it possible to conrm the
results of measurements taken at locations which are not directly visible.
In addition, the HI-520-2 features a temperature compensation function which automati-
cally eliminates the eects of temperature on measurement values, thus providing an all
season capability.
The HI-520-2 is a valuable moisture content management tool, useful in a variety of ap-
plications in concrete manufacturing, water proong and coating work in the construction
and building industries.
1. About the Model HI-520-2
Measurement principles
When the concrete or mortar contains water, the conduc-
tivity will increase. This makes it possible to determine the
moisture content by determining the relationship between
moisture content and conductivity. The values obtained in
this way are displayed as the measured moisture content.
High frequency capacitance (pF)
Moisture [%]

5
Measurement method High frequency capacitance (20MHz)
Measurement range LWC (ALA : Articial light weight aggregate concrete) ...0 - 23%
GYP (Gypsum board).............................. 0 - 50%
Concrete............................................... 0 - 12%
ALC (Autoclaved lightweight concrete)..... 0 - 100%
Mortar................................................... 0 - 15%
CSB (Calcium silicate board) ................... 0 - 15%
D mode........................................0 - 1999
S mode (only in S & D mode)..........0 - 1100
Functions Settings (5 types)
Precision ±0.5% (Concrete, Mortar)
Display Digital (LCD)
Power supply 9V alkaline battery (006P) ×1
Power consumption 350 mW
Dimensions and weight 72(W)×146(D)×118(H) mm, approx. 0.39 kg
Accessories 9V alkaline battery (006P), soft case (with strap), operating manual
Options Data logger software HDL-01 (with USB cable, a Windows PC with
Excel installed)
2. Specications
This mode is displayed
with a relative value of
0-1999, not a moisture
content. The D mode
measures the moisture
content at relatively
deeper point, and the
S mode measures the
moisture content at
relatively shallower
point. Refer to page 18
for further information.

6
Applications/Modes
Temperature
compensa-
tion
Alarm Hold Thick board
selection
Data save/
output
Registration
of calibra-
tions
Normal functions
LWC (ALA) 
GYP *1  
Concrete 
ALC 
Mortar 
CSB *1  
D mode   
Others
S&D (D mode,
S mode)   *2 
Make User Cal (0 - 7)   *2 *3
*1 Thick board is selectable for GYP and CSB.
*2 The data logger software, "HDL-01", (option) and a Windows PC with Excel installed are needed.
*3 The use of data logger software, "HDL-01", (option) allows the users to easily make custom calibrations.
Applications/Modes and Functions

7
3. Part names
<Main unit>
<Accessories> (Option)
Control key
USB connector
[POWER] button
Battery compartment
Moisture sensor (rear side)
Buzzer
[HOLD] button
Display
Strap
Operating Manual
9V alkaline battery
(006P) ×1
Data logger software
HDL- 01
Soft case

8
Item No. Description
①Indicates the remaining battery power.
: Sucient, : Exhausted, : Replacement required
②Displayed when the calibration curve, one of the extension functions, is used.
: Measured at a deeper point, : Measured at a shallower point
③Indicates the selected object to be measured and user calibrations. OT is displayed when the
calibrations, one of the extension functions, are used.
④Displays the date and time.
⑤
Displays the measured value. The moisture content (%) is displayed when a mode other than the
D mode and S mode is selected.
A value ranging from 0 to 1999 is displayed in the D mode, and a value ranging from 0 to 1100 is
displayed in the S mode.
⑥Indicates the data number after the data memory conguration. When GYP or CSB is selected,
the selected board thickness will be indicated.
Main
unit
key
The use of the [*] key allows the user to determine settings and operations.
The use of the [*] key allows the user to move to the target item or change values.
4. Display / Description of key
②
②
③
⑤
⑤
⑥
①
⑤
③
④
2014/03/19 15:23
78.8
99.6
OT User5 N : 0016
2014/03/19 15:23
3.7％
Concrete

9
The unit is powered by one 9 V battery (006P alkaline).
The unit is powered by one 9 V
battery (006P alkaline).
Replace the battery with new a
new one. Pay attention to the
and directions.
5. Battery installation

10
Step Operation Display Description
1
Start of measurement
cuiringver
oet
2014/03/19 15:23
Concrete
Eg.) Screen of measuring
concrete
Press the power switch while the moisture
sensor is pointed into the air.
* Adjustment of the instrument is performed
when the power is turned on. To perform
correct measurements, be sure to turn on the
power while the moisture sensor is directed
into the air. Keep the moisture sensor being
directed into the air until the measurement
screen appears.
The measurement screen appears approx.
3 seconds after a buzzer sounds.
* If settings are changed, the display may
change.
6. Measurement method
[POWER] button
Moisture
sensor

11
Step Operation Display Description
2
Measurement
Eg.) Measured results
While holding the main unit as shown in the
drawing, slightly push the moisture sensor
against the object to be measured, and the
measured result is displayed.
* Moisture calibrations are made while holding the
unit and slightly pushing it against the object to
be measured. Refer to the drawing.
* The measured result is displayed while the mois-
ture sensor is pushed against the object to be
measured. If the hold button is pressed during
measurement, the current measurement is re-
tained and the result remains displayed even
after separating the sensor from the object (hold
state). To cancel the hold state, press the hold
button again.
* If the moisture content exceeds the measurable
range, the screen display over range.
(For thin board measurement)
When the object to be measured is 40 mm or
less in thickness (such as GYP or CSB), keep
a space of at least 80 mm below the measure-
ment point (as shown on the drawing).
3Completion of measurement When measurements are completed, turn o the power.
Space of 80mm
or more
2014/03/19 15:23
3.7％
Concrete

12
7. Settings
Settings from 1 through 5 can be performed by pressing the key on the measurement
screen.
1Material selection ( P.13 ) 4Backlight brightness ( P.16 )
2Temperature compen-
sation ( P.14 ) 5Extension functions ( P.17 )
3Alarm setting ( P.15 ) 6Return (not included in settings)
* Refer to each indicated page for the functions or meanings of each pattern.
* Although 4 items are displayed on the screen,screen, all six items may be displayed by
scrolling the page with use of the ▲or ▼key.
* Once these settings are performed, the settings contents are stored in memory, even
when the instrument is powered off.
* To use the S mode, use the S & D mode, one of the extension functions. (See page 18.)
aterial
emperatureC
larm
acLigt
2014/03/19 15:23
Concrete

13
1 Material selection [Material]
Seven types of factory calibrated products may be selected.
(1) Press the key on the measurement screen, and the screen
changes to the setting screen.
Use the ▲or ▼key to select “Material” and press the key.
(2) Use the ▲or ▼key to select a material from 7 calibrations.
①D mode
②ALA concrete (LWC)
③GYP (Gypsum board : Thickness: 9.5mm, 12.5mm, 15.0mm)
④Concrete
⑤ALC
⑥Mortar
⑦CSB (Calcium silicate board : Thickness: 5mm, 6mm, 7mm,
8mm, 10mm or more)
* When ③or ⑦material is selected, select a thickness from the pa-
rentheses.
(3) Press the key to conrm the setting and return to the mea-
surement screen.
aterial
emperatureC
larm
acLigt
E
LC

Concrete

14
2 Temperature compensation [Temperature.C]
This setting cannot be performed when the D mode is selected or the
custom calibrations are used.
Automatic temperature correction is performed on the basis of the
temperature sensed by the temperature sensor in the measuring
instrument. When a temperature dierence between the measuring
instrument and the object to be measured is signicant, the tem-
perature can be manually specied.
(1) Press the key on the measurement screen, and the screen
changes to the setting screen.
Use the ▲or ▼key to select “Temperature.C” and press the
key.
(2) Use the ▲or ▼key to select “Manual” (–10 to 70 °C).
When want to select automatic correction, push ▲key until ex-
ceed 70 ℃.
(3) Press the key to conrm the setting and return to the mea-
surement screen.
aterial
emperatureC
larm
acLigt
utomatic
anual
20


15
3 Alarm setting [Alarm]
This setting cannot be performed when the D mode is selected or the
custom calibrations are used.
The upper limit of moisture content can be specified. When the
moisture content exceeds the specied value, a buzzer sounds.
(1) Press the key on the measurement screen, and the screen
changes to the setting screen.
Use the ▲or ▼key to select “Alarm” and press the key.
(2) Use the ▲or ▼key to select “On” (2 to 40%). When want to be
alarm o, push ▲key until exceed 40%.
(3) Press the key to conrm the setting and return to the mea-
surement screen.
aterial
emperatureC
larm
acLigt

n
30
％

16
4 Backlight brightness [Back Light]
The brightness of the backlight can be selected (O, Moderate, or
Bright).
The backlight is useful for measurement or key operation in the
dark.
(1) Press the key on the measurement screen, and the screen
changes to the setting screen.
Use the ▲or ▼key to select “Back Light” and press the key.
(2) Use the ▲or ▼key to select the brightness of the backlight.
(3) Press the key to conrm the setting and return to the mea-
surement screen.
* The use of backlight decreases battery life.
* If no operation is performed for approximately 10 seconds, the
backlight turns off for battery saving. When an operation is per-
formed, the backlight turns on again.
aterial
emperatureC
larm
acLigt

oerate
rigt

17
5 Extension functions [Others]
(1) Press the key on the measurement screen, and the screen
changes to the setting screen.
Use the ▲or ▼key to select “Others” and press the key.
(2) There are 6 extension functions as listed below : Use the ▲or
▼key to select a function.
①Select User Cal ( P.17 )
②Make User Cal ( P.18 )
③Data Memory ( P. 21)
④Data Output ( P. 2 2 )
⑤Clear All Data ( P. 2 3 )
⑥Date and Time ( P. 24 )
⑦Return (not included in extension functions)
* Refer to each indicated page for the functions or meanings of
each pattern. “⑦Return” is not included in the extension func-
tions.
emperatureC
larm
acLigt
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atautput

18
5 Others [①Select User Cal]
(1) Select “Select User Cal” on the extension function and press
the key.
(2) Use the ▲or ▼key to select from “User0” through “User7”
or “S & D” and press the key.
* When the user calibration has not been completed, the calibra-
tion cannot be selected. Refer to “②Make User Cal” on page 19
for how to set the calibrations.
* “D.MODE” and “S.MODE” are displayed at the same time for the
S & D mode.
(3) Press the key to return to the measurement screen on the
calibration selected.
• Description on D mode/S mode
The D mode is displayed not with the moisture content but with
the value of 0 to 1999, which correlates to the high-frequency
capacitance signal. The relationship between moisture con-
tents and the D mode is shown as the graph at right. Measured
values equivalent to the D.MODE of HI-520 will be provided.
Moisture content (%)
D mode
S mode
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er

2014/03/19 15:23
78.8
99.6
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ataemor
atautput

19
The S mode can also provide values correlated with the high-frequency capacitance sig-
nal, but the measurement depth is dierent between the D mode and S mode. The D mode
measures the moisture content at relatively deeper point, and on the other hand, the S
mode measures the moisture content at relatively shallower point.
5 Others [②Make User Cal]
• What is a user calibration?
The calibrations on this unit have been made on the ba-
sis of the relationship between high-frequency capaci-
tances and moisture contents. The D mode is correlated
with high-frequency capacitance. Understanding the
relations between the moisture content of the object to
be measured and the D mode value provides relation-
ship between the high-frequency signal and the mois-
ture content. Custom calibrations may be created bye
user to allow the HI520-02 to be used for more than just
the factory calibrations. To create the user calibrations,
prepare multiple samples (2 to 8 pieces) with dierent
moisture contents and record the D mode values and
corresponding moisture content obtained by a dierent
moisture method (see Fig. 1).
①
②
③
④
[Fig. 1]
D mode value
Moisture content (%)

20
* At least two samples and up to eight samples are needed. Ar-
range the results in ascending order of the D mode values as
shown in the [Table 1]. Each point is referred to as a zigzag
point, and connect zigzag points with a straight line. For points
less than the minimum point and more than the maximum point
of the calibrations, a prolongation of the adjacent line is applied.
In the case of the graph at right, the prolongation of ①−②is
applied to the part below ①, and the prolongation of ③−④is ap-
plied to the part above ④.
* The user calibrations can also be created in the S mode as well
as the D mode.
* The use of data logger software, “HDL-01”, (option) allows users
to simplify user calibrations.
Eg.) When the D mode of 246 and the moisture content
of 12.4 are entered into user calibration number 1:
(1) Select “Make User Cal” on the extension function and press the
key.
(2) Use the ▲or ▼key to select “User Cal. No 1” and press the
key.
D mode Moisture
value
①246 12.4
②688 26.7
③1015 44.2
④1578 52.3
Table 1
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ataemor
atautput
erCalo 
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 