Zehntner ZGR 2020 User manual

ZGR 2020-2024
Grindometer
Instruction Manual

Page 3
Index
Exclusion of liability 3
1 Description of device 4
2 Safety information 4
2 1 Symbols used 4
2 2 Safety notes and hints 4
3 Delivery of device 5
3 1 Damages during carriage 5
3 2 Shipment 5
3 3 Standard delivery 6
3 4 Options 6
4 Handling 7
5 Example of a reading at the grindometer 8
6 Technical specification 9
Glossary 11
Exclusion of liability
Illustrations, descriptions as well as the technical specifications conform to the
instruction manual at hand at the time of publishing or printing However, Zehntner
GmbH Testing Instruments policy is one of continuous product development All
changes resulting from technical progress, modified construction or similar are
reserved without obligation for Zehntner to update
Some of the images shown in this instruction manual are of a pre-production model
and/or are computer generated; therefore the design / features on the final version
of this instrument may differ in various aspects
The instruction manual has been drafted with the utmost care Nevertheless, errors
cannot be entirely excluded The manufacturer will not be liable for errors in this
instruction manual or for damages resulting from any errors
The manufacturer will be grateful at any time for suggestions, proposals for
improvement and indications of errors
© Zehntner GmbH Testing Instruments

Page 4
1 Description of device
The ZGR 2020-2024 Grindometers are according to Hegman for determination of
fineness of grind of coating materials, printing inks, pastes and similar products
Application areas:
• For very different industries, e g for the paint, varnish, printing ink, food,
cosmetics, paper and detergents industries
• Laboratory test instrument for quality control and experimental purposes
• Applicable to practically all pigmented systems
In particular, this instrument has the following features
• Easy to handle
• Easy to clean
2 Safety information
2 1 Symbols used
This note comprises instructions to be observed in order to follow directions,
specifications, proper working procedure and to avoid data loss, damage or
destruction of the instrument
This note signifies a warning about dangers to life and limb if the apparatus
is handled improperly Observe these notes and be particularly careful in
these cases Also inform other users on all safety notes Besides the notes
in these instruction manual the generally applicable safety instructions and
regulations for prevention of accidents have to be taken into account
2 2 Safety notes and hints
The ZGR 2020-2024 Grindometers are exclusively intended for determination
of fineness of grind of coating materials, printing inks, pastes and similar
products Any other use is considered as not being in accordance with the
intentions of the manufacturer The manufacturer is not liable for damage
resulting from inappropriate application The user bears the full
responsibility
Zehntner GmbH Testing Instruments refuses all warranty and liability
claims for damages caused by usage of the ZGR 2020-2024 in combination
with non-original accessories, or accessories from 3
rd
party suppliers

Page 5
Unauthorized modifications and changes of the ZGR 2020-2024 are not
allowed
Reproduction without permission is not allowed
For the operation of the ZGR 2020-2024 apply all local safety regulations
3 Delivery of device
3 1 Damages during carriage
At the receipt of the goods, check for any visible damages at the outer packing If it
is unharmed you can sign the receipt of the documents If you do suspect by your
visual impression that damage has occurred, make a note of the visible damage on
the delivery receipt or freight papers and get the carrier to countersign it
Moreover, the courier service must be held responsible for the damage in writing
If a hidden damage is discovered while unpacking, you have to inform and hold the
courier service immediately liable in the following way: “When opening the parcel
we had to notice that … etc “ This superficial checking of the goods has to be done
within the time limit set by the courier service, which is normally 7 days However,
the period could be less Hence, it is recommended to check the exact time limit
when receiving the goods
If there are any damages also inform your authorized Zehntner agent or Zehntner
GmbH Testing Instruments immediately
3 2 Shipment
In case the device needs to be transported again at a later time, it has to be
packaged properly Preferably, use the original packaging for later shipments
Additionally put filling material into a cardboard box in order to protect the device of
shock during carriage

Page 6
3 3 Standard delivery
Following parts are included in the delivery:
1 grindometer
1 scraper
1 microfiber cleaning cloth
1 certificate of manufacturer
1 carrying case
3 4 Options
• ZRT 2025 Groove Depth Meter
• ACC591 calibration and certification (incl
certificate)

Page 7
4 Handling
• Place the clean and dry grindometer on a horizontal flat, antiskid surface
• Place the material (free of air bubbles) to be tested in the deep end of the
paths, so that it overflows the paths slightly
• Place the scraper edgewise and parallel to the width of the grindometer on
the deepest point of the grooves and draw it within a few seconds (see the
standards) to a point beyond the zero depth of the grooves
• Within seconds (see the standards) after the completion of the drawdown of
the sample, view the grindometer at an right angle to the length of the grooves
and at an angle of 20° to 30° to the surface of the grindometer in a light that
will make the pattern of the sample in the grooves visible
• Observe the point where in the grooves particles in a greater number (in
accordance with ISO/EN/DIN 5 to 10 particles in an imaginary 3 mm (0 12“)
wide band) are first visible and read the value on the scale belonging to that
point
• Clean the grindometer and scraper afterwards
Check grindometer periodically by use of a groove depth meter (see options)

Page 8
5 Example of a reading at the grindometer
100 µm
90 µm
80 µm
70 µm
60 µm
50 µm
40 µm
30 µm
20 µm
10 µm
0 µm
Fineness of grind: 50 µm

Page 9
6 Technical specification
Versions
Number of
grooves Depth of the grooves
Dimensions
(LxWxH) Weight Standards
2020
2
0 - 00 µm
(0-3.94 mil)
8 - 0
Hegman
grindo-
meter:
74 x 60 x 3
mm
(6.85“ x 2.36“
x 0.5 “)
scraper:
75 x 40 x 8
mm
(2.95“ x .57“
x 0.32“)
≈ .2 kg
(2.65 lbs)
EN ISO DIN
524, ASTM
D 2 0,
ASTM
D 3 6,
EN 2 524
(withdrawn
2002)
202
0
-
50 µm
(0- .97 mil)
8
-
4
Hegman
2022
0
-
25 µm
(0-0.98 mil)
8
-
6
Hegman
2023 0 - 5 µm
(0-0.59 mil)
8 - 6,8
Hegman
2020.S. .34.0. 00
0 - 00 µm
(0-3.94 mil)
8 - 0
Hegman
based on:
EN ISO DIN
524, ASTM
D 2 0,
ASTM
D 3 6,
EN 2 524
(withdrawn
2002)
202 .S. .34.0.50
0
-
50 µm
(0- .97 mil)
8
-
4
Hegman
2022.S. .34.0.25
0
-
25 µm
(0-0.98 mil)
8
-
6
Hegman
2023.S. .34.0. 5
0
-
5 µm
(0-0.59 mil)
8
-
6,8
Hegman
2020.A
2
*
0
-
00 µm
(0-3.94 mil)
8
-
0
Hegman
≈0.5 kg
( . 0 lbs)
202 .A
0
-
50 µm
(0- .97 mil)
8
-
4
Hegman
2022.A
0
-
25 µm
(0-0.98 mil)
8
-
6
Hegman
2023.A
0
-
5 µm
(0-0.59 mil)
8
-
6,8
Hegman
* Special version (red anodised aluminium) for all transparent coating
material

Page 10
Versions
Number of
grooves Depth of grooves
Dimension
s
(LxBxH) Weight Standards
2024.0. 00.0.50.0.25
3
0 - 00 µm
(0-3.94 mil)
0 - 50 µm
(0- .97 mil)
0 - 25 µm
(0-0.98 mil)
without Hegman
g
rindo
-
meter:
74 x 90 x 3
mm
(6.85” x 3.54”
x 0.5 ”)
scraper:
00 x 40 x 7
mm
(3.94” x .57”
x 0.28”)
≈ .7 kg
(3.75 lbs)
based on
:
EN ISO DIN
524, ASTM
D 2 0,
ASTM D 3 6,
EN 2 524
(withdrawn
2002)
2024 on request
depending on version
0 - ‘000 µm (0-39.37 mil), 8 - 0 Hegman, others in µm
Material
stainless steel,
hardened
2020.A - 2023.A: red anodised aluminium
Warranty
2 years

Page 11
Glossary
D
Damages during carriage 5
Delivery of device 5
Description of device 4
E
Exclusion of liability 3
Extent of delivery 6
F
Features 4
H
Handling 7
I
Instrument
Delivery 5
Description 4
Extent of delivery 6
O
Options 6
R
Reading example 8
S
Safety information 4
Shipment 5
Standard delivery 6
T
Technical specification 9
Transportation
Damages 5

Zehntner GmbH Testing Instruments, Gewerbestrasse 4, CH – 4450 Sissach, Switzerland
Tel : [phone], Fax: [phone], zehntner@zehntner com, www zehntner com
Version 2 1
dated 21 11
2016