Proceq ZEHNTNER ZGM1120 User manual

ZGM1120
Glossmeter
Technical Manual

18. May 2021 © Copyright 2021, PROCEQ SA
Document Information
Document Revision: 3.0
Revision Date: May 18, 2021
Document State: Released
Company: Proceq SA
Ringstrasse 2
CH-8603 Schwerzenbach
Switzerland
Classification: Technical Manual
Revision History
Rev
Date
Author, Comments
0.9
Aug 17, 2020
PEGG
- Initial document copied from ZGM1120 v1.5_en
- included Installation ZGM1120 RS232 V1.7_en and
Documentation ZGM1120 RS232 V1.8_en
1.0
Sept 8, 2020
PEGG, Initial release
3.0
May 21, 2021
PEGG, Release

18. May 2021 © Copyright 2021, PROCEQ SA
Content
1Safety notes ............................................................................................................1
1.1 Symbols used.......................................................................................................... 1
1.2 Safety notes and hints.............................................................................................. 1
2Introduction ............................................................................................................1
2.1 Scope of this document............................................................................................ 2
2.2 Product versions...................................................................................................... 2
2.2.1 ZGM 1120-RS232.................................................................................................... 2
2.2.2 ZGM 1120-RS232 with special measuring distance.................................................. 3
3Scope of Delivery ...................................................................................................4
3.1 Standard delivery..................................................................................................... 4
3.2 Software .................................................................................................................. 4
4Device overview......................................................................................................6
5Operation and handling ZGM 1120........................................................................7
5.1 Calibration ............................................................................................................... 7
5.2 Measuring procedure ............................................................................................... 7
6Operation ZGM 1120-RS232.................................................................................10
6.1 RS232 connection.................................................................................................. 10
6.1.1 D-Sub 9 pin assignment......................................................................................... 10
6.2 Communication protocol ........................................................................................ 11
6.2.1 Command string .................................................................................................... 11
6.2.2 Return string.......................................................................................................... 11
6.2.3 Operation code (OP-Code) .................................................................................... 12
6.2.4 Overview of the commands parameters ................................................................. 13
6.2.5 Serial number (serial No.) ...................................................................................... 14
6.2.6 Transactional number (TID) ................................................................................... 14
6.2.7 Parameter „AngleBinary“........................................................................................ 15
6.3 Commands ............................................................................................................ 15
6.3.1 Command MeasureValue() .................................................................................... 15
6.3.2 Command GetIsOnStandard.................................................................................. 18
6.3.3 Command MeasureTemp() .................................................................................... 18
6.3.4 Command ControlLedOn()..................................................................................... 19
6.3.5 Command ControlLedOff()..................................................................................... 19
6.3.6 Command Error()................................................................................................... 20
6.3.7 Command Reset_Device()..................................................................................... 20
6.3.8 Command Calibrate()............................................................................................. 20
6.4 Command AutoSend() ........................................................................................... 22
6.5 Error handling ........................................................................................................ 24
7Practical measuring suggestions........................................................................27
7.1 General.................................................................................................................. 27
7.2 How to choose the correct measuring geometry for paints and varnishes ............... 27
7.3 Measuring special samples .................................................................................... 27
8Maintenance and Cleaning...................................................................................28
8.1 Maintenance carried out by the user ...................................................................... 28
8.2 Cleaning of the aluminium housing......................................................................... 28
8.3 Cleaning of the standard ........................................................................................ 28
9Technical Specification........................................................................................29

18. May 2021 © Copyright 2021, PROCEQ SA
Legal Notices
This document can be changed at every time and without any prenotification or announcement.
The content of this document is intellectual property of Proceq SA and prohibited to be copied
neither in a photomechanical or electronic way, nor in excerpts, saved and/or be passed on to
other persons and institutions.
The features described in this instruction manual represent the complete technology of this
instrument. These features are either included in the standard delivery or available as options
at additional costs.
Illustrations, descriptions as well as the technical specifications conform to the instruction
manual at hand at the time of publishing or printing. However, Proceq SA policy is one of
continuous product development. All changes resulting from technical progress, modified
construction or similar are reserved without obligation for Proceq 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
references to errors.
Damages during carriage
On receipt of the goods, check for any visible damages on the packaging. If it is undamaged
you may sign the receipt of the goods. If you do suspect by visual inspection that damage has
occurred, make a note of the visible damage on the delivery receipt and request the courier 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 liable
immediately 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 carrier, which is
normally 7 days. However, the period could vary depending on the courier. Hence, it is
recommended to check the exact time limit when receiving the goods.
If there are any damages also inform your authorised Proceq agent or Proceq SA immediately.
Shipment
Should the device be transported again, it must be packaged properly. Preferably use the
original packaging for later shipments. Additionally, use filling material in the package to protect
the device from any shock during carriage.

18. May 2021 © Copyright 2020, PROCEQ SA 1
1 Safety notes
1.1 Symbols used
This note comprises instructions needed 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 this instruction manual the generally
applicable safety instructions and regulations for prevention of accidents must be
observed.
1.2 Safety notes and hints
It is strictly forbidden to open the housing of the product! If not observed, all the
guarantee and liability claims to Proceq SA will be void.
The glossmeter is exclusively intended for the determination of gloss ranges of
surfaces. 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.
Unauthorized modifications and changes of the product are not permitted.
Reproduction without permission is not allowed.
All maintenance and repair work which is not explicitly permitted and described in the
present instruction manual shall only be carried out by Proceq SA or your authorized
Zehntner agent, failure to comply voids warranty. Always disconnect the glossmeter
from the USB port of the computer before the permitted maintenance.
Proceq SA refuses all warranty and liability claims for damages caused by usage of
the product in combination with non-original accessories, or accessories from 3rd
party suppliers.
Never unplug the USB-cable during a measurement or while the green data transfer
indication light LED (2) is on.
Never immerse the device in water or other liquids: Danger of short circuit!
Never leave the product under direct sun exposure. Always store the product in its
carrying case.

For the operation of the product all local safety regulations apply.

18. May 2021 © Copyright 2020, PROCEQ SA 2
2 Introduction
The ZGM 1120 glossmeters are for measurement of all gloss ranges on all surfaces,
including small parts and curved surfaces.
The entire operation and control of the ZGM 1120 is done via the USB interface of your PC
by using the GlossTools measuring and examination software.
This instrument has the following features:
Sturdy aluminum design and high quality
Smallest dimensions and ultra-light weight
Extremely small measuring spot
Available as 1-, 2- or 3-angle version
User friendly, multilingual user interface
Easy control, operation and display with a computer using the GlossTools software.
Powerful stray light compensation allows exact measurement of transparent objects.
Automatic, adjustable prompt for calibration
Automatic standard recognition
Long-lasting LED illumination system
Power is supplied via the USB-interface.
2.1 Scope of this document
This document is an instruction manual for the ZGM1120 Glossmeter family.
This instruction manual covers all models of the ZGM 1120 series which includes the USB
version ZGM 1120 and the RS232 version ZGM 1120-RS232 with all 1-, 2- or also 3-angle
models.
Therefore, some pictures or functional descriptions (e.g. selection of measuring geometry) may
differ from your model.
2.2 Product versions
2.2.1 ZGM 1120-RS232
The ZGM 1120 is also available in a RS232 version (ZGM 1120-RS232), which connects to
an RS232 port of a PC.
This version requires an additional USB-2-RS232 cable, which needs to be ordered separately.

18. May 2021 © Copyright 2020, PROCEQ SA 3
2.2.2 ZGM 1120-RS232 with special measuring distance
There is a special version of the ZGM 1120-RS232, which is designed for contactless
measurements. Due to stray light compensation and a different measurement head, these
instruments can measure with a measuring distance of 0,5 mm or 1 mm, depending on the
ordered version.
ZGM 1120 with adjusted measuring distance
To ensure reliable measuring results the measuring distance of your glossmeter to the
sample has to be maintained within a tolerance of ± 0.1mm.
For calibration a special standard is required. This standard is included in the product.

18. May 2021 © Copyright 2020, PROCEQ SA 4
3 Scope of Delivery
3.1 Standard delivery
The following parts are included in the delivery:
ZGM 1120
ZGM1120-RS232
Content
1
1
ZGM 1120 glossmeter
1
1
calibration standard
1
1
microfiber cleaning cloth
1
USB-cable
1
1
certificate of manufacturer
1
1
certificate of calibration
1
1
carrying case
3.2 Software
A software for windows PCs is available to connect to the device.
This software allows to read data from the device.

18. May 2021 © Copyright 2020, PROCEQ SA 5
The GlossTools software is available for download on the Proceq website.
Part of this package are also two APIs, which allow automized measurement:
Labview programming interface
„GlossTools“ programming interface (.NET API)
Proceq refuses all warranty and liability claims for damages caused by usage of the
ZGM 1120 in combination with non-original accessories, or accessories from 3rd
party suppliers.

18. May 2021 © Copyright 2020, PROCEQ SA 6
4 Device Overview
(1) Measuring button
(2) Data transfer indication light
(3) Measurement opening, indication of light beam direction
(4) USB interface
(5) Zehntner calibration standard
(3)
(1)
(2)
(5)
(4)
(5)

18. May 2021 © Copyright 2020, PROCEQ SA 7
5 Operation and handling ZGM 1120
Operation and control of the ZGM 1120 is done by using the included GlossTools measuring
and examination software.
Do not connect the glossmeter to your PC unless all installation steps of the
“GlossTools” software package have been performed.
5.1 Calibration
Start GlossTools software.
Insert the ZGM 1120 from the top into the supplied calibration standard until it locks
audibly.
Carry out the calibration according to the instructions of the „GlossTools“ manual.
To ensure precise and valid results the ZGM 1120 must be calibrated by the user on
the calibration standard in regular intervals (recommended interval: every 2 days).
The standard has been measured in the factory and marked with the serial number of
the instrument.
5.2 Measuring procedure
Position the unit on the surface to be measured so that it bears evenly.

18. May 2021 © Copyright 2020, PROCEQ SA 8
With the ZGM 1120 is also possible to measure upside down. Insert the unit upside-
down into the holder of the calibration standard. Small parts can be measured easier in
this position. Due to the stray light compensation, you receive correct gloss values
even though the measurement opening (3) is not completely covered by the sample.
Measuring upside down Version with measuring distance for
contactless gloss measuring
Measurement on uneven surfaces

18. May 2021 © Copyright 2020, PROCEQ SA 9
The ZGM 1120 consists of sensitive precision optical and electronic parts. Do not drop
it and avoid shocks.
Protect the measurement opening of the ZGM 1120 from foreign particles and dust.

18. May 2021 © Copyright 2020, PROCEQ SA 10
6 Operation ZGM 1120-RS232
The ZGM 1120-RS232 version is intended to be used on the RS323 port of a PC. This allows
a simple serial communication via a string-based ASCII protocol.
This section contains the technical details concerning the communication with the RS232
version of ZGM 1120 Glossmeter and explains the connection setup, the protocol format, the
command set and their parameters, the answer-strings of the unit as well as possible error
reports.
6.1 RS232 connection
The ZGM 1120-RS232 is connected to a RS232 port using the included USB-2-RS232 cable.
This cable is a special Y-cable, which is designed for exclusive use with ZGM 1120-RS232.
Connect the cable according to the scheme below:
Labelling
Connector
Application
1
9-pin D-sub
Connection to COM port at PC / Laptop or at an RS-232 to
USB converter.
2
Mini USB
Connection to ZGM 1120.
3
USB Type A
Connection to the PC / Laptop for power supply.
The glossmeter is powered with 5V over the USB A connector, plugged into a USB port on the
PC side.
6.1.1 D-Sub 9 pin assignment
Pin assignment on D-Sub 9 pin connector, device cable side (male)
Pin No.
Signal
Description
2
RX
Receive
3
TX
Transmit
5
GND
Ground
1,4,6,7,8,9
NC
Not connected
1
2
3

18. May 2021 © Copyright 2020, PROCEQ SA 11
The following connection settings have to be set on the serial port of the PC:
Setting
Baudrate
115200
Databits
8
Stop Bits
1
Parity
None
Flow control
None
After opening the corresponding COM ports, the ZGM 1120 Glossmeter is immediately ready
for use.
6.2 Communication protocol
6.2.1 Command string
The communication with the ZGM 1120 Glossmeter is completely string based. That means
all commands are composed of ASCII-character strings. This enables a simple control of the
device, for example with a commercial terminal program such as „HyperTerminal“.
A command consists in each case of:
an operation code (OP-Code)
the serial number of the corresponding ZGM 1120 Glossmeter
a transaction-ID (TID)
optionally one or more parameters
The components of the command string are separated from each other by
„|“ character (ASCII 0x7C).
Every command string is completed with a „:“ (ASCII 0x3A).
Example: 1| 401120999|xy|1|0:
6.2.2 Return string
The answer of the ZGM 1120 Glossmeter to a command string consists of the following parts:
the operation code of the command performed (OP-Code)
the serial number of the corresponding ZGM 1120 Glossmeter

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a transaction ID (TID) of the performed command
optionally one or more return values
The components of the return string are separated from each other by a
“|“ character (ASCII 0x7C).
In contrast to the command string, the return string is not finished with a
“:“ character (ASCII 0x3A)!
In case there is an error at carrying out the command, an error string will be sent back instead
of a return string (see section 6.5).
6.2.3 Operation code (OP-Code)
The first transmitted component, the so called operation code or OP-code, describes the
command which has to be performed.
The following table shows the assignment of the OP-codes to the corresponding commands:
Command
OP-Code
MeasureValue(SerialNo, TID, AngleBinary, Count, isTemp)
01
GetIsOnStandard(SerialNo, TID)
28
MeasureTemp(SerialNo, TID)
36
ControlLEDOn(SerialNo, TID, LED)
48
ControlLEDOff(SerialNo, TID, LED )
52
Error(SerialNo, TID, ErrorCode) -> Error-String from client to host
56
Reset_Device(SerialNo, TID)
64
Calibrate(SerialNo, TID, Angle, Cal2Standard, Cal2StandValue)
72
AutoSend(SerialNo, TID, AutoSendCluster)
6
Attention:
The listed commands are not the entire set of OP-Codes which the ZGM 1120 Glossmeter can
understand and process. Certain OP-Codes are only used for using the ZGM 1120 with the
Zehntner „GlossTools” software or for factory configuration / calibration.
Only use the operation codes which are listed here. Using unlisted operation codes
could lead to serious manipulations in the device memory, which damages its function
and consequently it has to be sent in for maintenance and calibration to the company
Zehntner.

18. May 2021 © Copyright 2020, PROCEQ SA 13
6.2.4 Overview of the commands
OP-Code:
2 characters
max. two-digit operation code
(range: 1-99)
SerialNo:
10 characters
9-digit serial number + preceding blank
TID:
2 characters
Transactional-ID
2 ASCII character, which serves the allocation of the
command and answer string, respectively, the error
string.
Apart from the following exception, all digits of the ASCII-
character set can be used:
„NULL“ (ASCII 0x00)
„:” (ASCII 0x3A)
„A“ (ASCII 0x41)
„|“ (ASCII 0x7C)
Count:
1 character
Defines the number of measurements which have to be
accomplished as parameter.
This value must always be 1 (single measurement).
In the return string, „Count” indicates the number of the
actual measurements (has to be 1 too).
isTemp:
1 character
Flag, which indicates whether the temperature has to be
measured additionally.
1 = gloss measurement with temperature
0 = gloss measurement without temperature
AngleBinary:
1 character
Indication of the angle to which the command has to be
applied.
binary coded decimal number:
{A1 = 2^0, A2 = 2^1, A3 = 2^2}
ErrorCode:
2 characters
Error code of the occurred error

18. May 2021 © Copyright 2020, PROCEQ SA 14
Cal2Standard
1 character
Indicates whether the ZGM 1120 shall be calibrated on the
provided working standard or on an alternative 2nd
calibration standard.
0 = working standard
1 = 2nd standard
Cal2StandValue
Calibration value for the 2nd standard, in case the Flag
„Cal2Standard“ has been set on 1.
This value is indicated in decimal gloss units (dGU).
Delimiter „|“:
1 character
Separator between single parameters in a command,
respectively, return string.
6.2.5 Serial number (serial No.)
Every ZGM 1120 has a unique 9-digit serial number for identification. The serial number has
to be indicated for the addressing of the requested device in every command-string.
In the additional answer or possible error string this serial number is always mirrored.
NOTE: The serial number has always to be transmitted with a leading space character.
6.2.6 Transactional number (TID)
The TID is a two digit number, which serves the allocation of the command and answer-string.
It can be generated of two arbitrary ASCII-character (for example xy).
Excluded are only the following 4 ASCII-characters:
„NULL“ (ASCII 0x00)
„:“ (ASCII 0x3A) -> End of command characters
„A“ (ASCII 0x41)
„|“ (ASCII 0x7C) -> Parameter delimiter characters
At every command strings, such a TID has to be added. In the additional answer or possible
error string, this TID is always mirrored.
In general, it is not necessary to generate a new TID for every command string. The same TID
can be used all the time.

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6.2.7 Parameter „AngleBinary“
This parameter includes information for which geometry or geometries actions are
accomplished. The parameter corresponds to a binary coded integer number and is codified
as follows:
A3
A2
A1
Integer
value
0
0
1
1
0
1
0
2
0
1
1
3
1
0
0
4
1
0
1
5
1
1
0
6
1
1
1
7
A1, A2, A3 = angle
A1 always denotes the smallest angle looked at from the perpendicular to the measuring plane.
Considering a three angle glossmeter device with geometries of 20° / 60 ° / 85°, A1 would be
20°, A2 = 60° and A3 = 85°.
If the command MeasureValue() only measures, for example, the angles 1 and 3, the value of
the parameter is AngleBinary = 5!
6.3 Commands
6.3.1 Command MeasureValue()
This command initiates a gloss measurement in the measuring head.
MeasureValue(SerialNo, TID, AngleBinary, Count, isTemp)
OP-Code: 01
Parameter:
SerialNo
9-digit serial number with preceding blank
TID
2 character transaction number of the host
AngleBinary
Indication of the angle(s) that has to be measured
Binary coded integer number: {A1 = 2^0, A2 = 2^1, A3 = 2^2}
Count
This value is always 1!

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isTemp
Flag indicates if the temperature is measured while measuring
0 = without temperature
1 = with temperature
Return string:
SerialNo
9-digit serial number with preceding blank
TID
Transactional number [2 characters]
Measuring value
Measurements in „deci gloss units” (dGU).
(900 dGU would mean 90 gloss units)
If an angle is not measured, a „-1“ is returned
[max. 3 x 5 characters]
Offset
Offset respectively value of the zero current measurement (raw
value of the A/D-modifier).
In case an angle is not being measured, „-1“ is returned for the
corresponding offset value.
If an „Overflow“occurs during a measurement, a „-2“ is returned.
[max. 3 x 5 characters]
Sequence: MW1|Offset1|MW2|Offset2|MW3|Offset3
Count
This value is always 1!
Temperature
Temperature in °C [max. 3 characters]
(characters + 2 digits, without decimal place)
In case isTemp=0, a „0“ is returned.
Example:
If you want to measure for example 20° and 85° angle without temperature with a three angle
gloss meter (20°/60°/85°), the following command string has to be used:
1| 401120999|xy|5|1|0:
Operation code: 1(MeasureValue)
Serial-No: 401120999 (with preceding blank)
TID: xy (can freely be chosen)
AngleBinary: 5(angle A1 and A3)
Count: 1(this parameter is always 1!)
isTemp: 1 (additional temperature measurement)
The corresponding return-string could be as follows:
1| 401120999|xy|958|94|-1|-1|993|78|1|25