ICS Schneider Messtechnik Snap 41 Original instructions

Instruction Manual and Safety Information
Snap 41
Portable Alcohol Meter
instrument software version: from 1.0
(Original Instructions)

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errors or omissions in this document.
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Further information
Published by Anton Paar GmbH. Printed in Austria.
Copyright © 2022 Anton Paar GmbH, Graz, Austria
Date: July 12, 2022
Document number: E28IB004EN-G

E28IB004EN-G 3
Contents
1 Safety Instructions ................................................................................ 5
2 Snap 41 – An Overview ......................................................................... 8
2.1 Measuring Principle ......................................................................... 9
3 Checking the Supplied Parts ............................................................. 10
4 View of Snap 41 ................................................................................... 13
5 Putting Snap 41 into Operation ......................................................... 15
5.1 Connecting the Filling Tube .......................................................... 15
5.2 Mounting the Syringe Adapter ....................................................... 15
5.3 Switching the Instrument On/Off ................................................... 15
6 Operating the Instrument ................................................................... 16
6.1 Main Screen .................................................................................. 16
6.2 Key Functions ............................................................................... 17
6.3 Quick Access Area ........................................................................ 18
6.4 Menu Navigation ........................................................................... 18
6.5 Selecting from a List ...................................................................... 18
6.6 Operation by Gestures .................................................................. 19
7 Instrument Settings ............................................................................ 20
7.1 Setting the Language .................................................................... 20
7.2 Display Settings ............................................................................ 20
7.3 Sound Settings .............................................................................. 21
7.4 Enabling/Disabling Gesture Control .............................................. 21
8 Setting the Measuring Units ............................................................... 22
9 Checks and Adjustments ................................................................... 22
9.1 Performing a Water Check ............................................................ 22
9.2 Performing a Water Adjustment .................................................... 23
9.3 Reset to Factory Adjustment ......................................................... 23
10 Measuring .......................................................................................... 24
10.1 Filling the Sample ........................................................................ 24
10.1.1 Filling with the Filling Tube .................................................. 25
10.1.2 Filling with a Syringe ........................................................... 25
10.2 Performing a Measurement ......................................................... 26
11 Upkeep and Cleaning ........................................................................ 27
11.1 Cleaning the Measuring Cell ....................................................... 27
11.1.1 Cleaning Interval ................................................................. 27
11.1.2 Cleaning at the End of a Measurement Series ................... 28
11.1.3 Cleaning Visible Residues in the Measuring Cell ............... 28
11.1.4 Cleaning Agent – Recommendations ................................. 28
11.2 Cleaning the Filling Pump ........................................................... 29

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11.3 Cleaning the Housing and the Display ........................................ 30
11.4 Storing the Instrument ................................................................. 31
11.5 Exchanging the Batteries ............................................................ 31
11.6 Exchanging the Pump Lever ....................................................... 32
11.7 Software Update ......................................................................... 33
11.8 System Information ..................................................................... 33
12 Maintenance and Repair ................................................................... 34
12.1 Maintenance Performed by an Authorized Anton Paar
Service Engineer ............................................................................... 34
12.2 Repair Performed by an Authorized Anton Paar
Representative .................................................................................. 34
Appendix A: Technical Data .................................................................. 35
A.1: Specifications .............................................................................. 35
A.2: Instrument Data and Operating Conditions ................................. 35
A.3: Wetted Parts ................................................................................ 36
Appendix B: Declarations of Conformity ............................................. 37
Appendix C: Menu Tree ......................................................................... 39

E28IB004EN-G 5
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1 Safety Instructions
• Read the documentation before using the instrument.
• Follow all hints and instructions in the documentation to ensure the
correct use and safe functioning of the instrument.
• The documentation is a part of the product. Keep it for the complete
working life of the product and make it easily accessible for all persons
involved with the product. If you receive any additions or revisions to the
documentation from Anton Paar GmbH, these must be treated as part of
the documentation.
1.1 Liability
• This document does not claim to address all safety issues associated
with the use of the instrument and samples. It is your responsibility to
establish health and safety practices and to determine the applicability
of regulatory limitations.
• Anton Paar GmbH only warrants the proper functioning of the instrument
if no modifications are made to mechanics, electronics, or software.
• Use the instrument only for the purpose described in the documentation.
Anton Paar GmbH is not liable for damages caused by incorrect use of
the instrument.
• The results delivered by the instrument depend not only on the correct
functioning of the instrument, but also on various other factors. We
therefore recommend that you have the results checked (e.g. plausibility
tested) by skilled persons before consequential actions are taken based
on the results.
1.2 Installation and Use
• The installation procedure shall be carried out only by authorized
persons who are familiar with the installation instructions.
• Use only accessories and consumables supplied or approved by
Anton Paar GmbH.

6 E28IB004EN-G
• Ensure that all operators have been trained beforehand to use the
instrument safely and correctly.
• Ensure that the instrument is sufficiently supervised during operation.
• In case of damage or malfunction, do not continue operating the instru-
ment. Do not operate the instrument under conditions which could result
in damage to goods or injuries or loss of life.
• Do not expose the instrument to temperatures below 0 °C (32 °F) when
the measuring cell contains water. Freezing water will cause rupture of
the measuring cell.
• The instrument is not insulated against high voltages. Measuring samples
under high voltage (e.g. in energized battery banks) bears the risk of an
electric shock. Define appropriate testing procedures and safety mea-
sures to protect yourself from any electric shock.
Operation in areas with risk of explosion
• The instrument is not explosion-proof and therefore must not be
operated in areas with risk of explosion.
General precautions
• Observe and adhere to your national safety regulations regarding the
handling of all substances associated with your measurements (e.g. use
safety goggles, gloves, respiratory protection, etc.).
• Before a measurement check the wetted parts of the instrument for
chemical resistance to the samples and cleaning agents used.
Precautions for flammable samples and cleaning agents
• Keep potential sources of ignition, like sparks or open flames, at a safe
distance from the instrument.
• Store only the minimum required amount of sample, cleaning agents,
and other flammable materials near the instrument.
• Do not spill sample/cleaning agents or leave their containers uncovered.
Immediately remove spilled sample/cleaning agents.
• Ensure that the setup location is sufficiently ventilated. The environment
of the instrument must be kept free from flammable gases and vapors.
• Provide fire-extinguishing equipment.

E28IB004EN-G 7
Battery Handling
• Never open the battery compartment in hazardous areas. Exchange the
batteries only outside hazardous areas.
1.3 Service and Repairs
• Service and repair procedures may be carried out only by authorized
persons or by Anton Paar GmbH.
1.4 Disposal
• Concerning the disposal of the instrument, observe the legal require-
ments in your country.
1.5 Conventions for Safety Messages
The following conventions for safety messages are used in this document:
WARNING
Description of risk
Warning indicates a hazardous situation which, if not avoided, could
result in death or serious injury.
CAUTION
Description of risk
Caution indicates a hazardous situation which, if not avoided, could result
in minor or moderate injury.
NOTICE
Description of risk
Notice indicates a situation which, if not avoided, could result in damage
to property.

8 E28IB004EN-G
2 Snap 41 – An Overview
Snap 41 is a portable alcohol meter for the determination of the alcohol
concentration in distilled spirits that can be considered to be binary mixtures
of ethanol and water. The concentration determination is based on density
measurement by the oscillating U-tube method.
Quick on-site measurements
The robust instrument measures samples directly out of the sample container
– without the necessity to pour the sample into a measuring cylinder. After
pressing down the lever of the pump, the tube is immersed directly into the
storage vessel to suck up 2 mL of sample. Within seconds the instrument
displays the alcohol concentration with an accuracy of 0.2 % v/v.
Owing to the compact design, it is easy to perform measurements of samples
that are difficult to access. A TFT display ensures clear visibility of results,
even in dark surroundings. At the same time the backlight of the oscillator
enables you to observe the filling process in detail.
Snap 41 is operated via keys on the front.
Samples are filled into the measuring cell using the built-in pipette-style
pump or a syringe.
One instrument for distilled spirits of all strengths
Snap 41 covers a measuring range from 0–100 % v/v (0–200 °Proof), and
therefore measures distilled spirits of all strengths – be it pure distilled spirits,
samples during the dilution of pure distilled spirit to drinking strength, or a
check of the final product.
Automatic temperature compensation
Snap 41 measures sample temperatures from 5 °C to 30 °C, and automati-
cally converts the measured result to compensate for the deviation from the
required reference temperature (20 °C or 15 °C for % v/v alcohol, 60 °F for
°Proof).

E28IB004EN-G 9
2.1 Measuring Principle
Definition of density
The density (ρ) of a sample is defined as its mass (m) divided by its v o l u m e (V) :
As the volume changes with temperature, density is a temperature-depen-
dent measuring unit.
The oscillating U-tube method
The sample is introduced into a U-shaped borosilicate glass tube that is
being excited to vibrate at its characteristic frequency. The characteristic
frequency changes depending on the density of the sample. With the deter-
mination of the characteristic frequency, the density of the sample can be
calculated.
Due to the temperature dependency of the density value, the temperature of
the sample has to be determined precisely and simultaneously with the
density value. The sample temperature should be close to ambient tempera-
ture and the instrument's temperature in order to keep the temperature influ-
ence on the measured result to a minimum.
The density and temperature values are the basis for the calculation of the
alcohol content, which is temperature compensated to correlate with a
certain reference temperature.
Concentration measurement
In binary mixtures, the density of the mixture is a function of its composition.
Thus, with the aid of density/concentration tables, the density value of a
binary mixture can be used to calculate its composition.
This procedure is also applicable for so-called quasi-binary mixtures. These
mixtures contain two major components and some additional ones in very
small concentrations compared to the two main components.
Many decarbonated soft drinks, for example, can be considered to be quasi-
binary mixtures of sugar and water because the concentrations of flavors and
acids are very small compared to those of sugar and water. Hence, the sugar
concentration can be determined with a density meter.
m
V
-----=

10 E28IB004EN-G
The same holds for the determination of the alcohol concentration in distilled
spirits, which can be considered to be quasi-binary mixtures of ethanol and
water.
In contrast, all kinds of liqueurs have to be considered as ternary solutions of
water, ethanol, and sugar. They are typically produced by mixing distilled
spirits with fruit juices, herbs, dairy products etc., and adding sugar. There-
fore, the determination of the true alcohol concentration based on density
measurement is not possible for liqueurs.
3 Checking the Supplied Parts
Snap 41 has been tested and packed carefully before shipment. However,
damage may occur during transportation.
1. Keep the packaging material (box, foam pieces, transport protection) for
possible returns or for questions from the transportation or the insurance
company.
2. To check the delivery for completeness, compare the supplied parts to
those listed in table 1.
3. If a part is missing, contact your local Anton Paar representative.
4. If a part is damaged, contact the transportation company and your local
Anton Paar representative.
Table 1: Supplied parts
Qty. Article description Mat. no.
1 Snap 41 Portable Alcohol Meter 183054

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1 Pump lever with lock function 165216
1 Rubber housing measuring cell 165214
1 Instruction manual English 185360
1 Filling tube 180 mm 172214
1 Adapter Luer ¼" UNF 172211
1 Syringes 2 mL Luer (10 pcs) 58802
1 Allen key 3 mm DIN 911 58264
Table 1: Supplied parts (cont.)
Qty. Article description Mat. no.

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Table 2: Optional accessories and consumables
Article description Mat. no.
Rubber housing operating panel 177115
Screw plug ¼" UNF 172246
Filling tube 600 mm 178843
Spare wristband for portable instruments 92477
Set carrying strap DMA 35/Snap 177301
Bluetooth USB adapter 99180
Carrying case DMA 35/Snap 41 177345
Alkaline battery 1.5 V LR06 mignon AA 82610
Density standard ultra-pure water 5x10 mL 96044
Wall bracket for DMA 35, DMA 35 Ampere, DMA 35 Ex /
Ex Petrol
244859

E28IB004EN-G 13
4 View of Snap 41
Fig. 1: Front view of the instrument
Keys on the front
1 Arrow keys
2 Function keys
3 Filling pump
4 Screw plug
5 Filling tube
6 Measuring cell
7 Power ON/OFF key
8 LC display
Power ON/OFF key to switch the instrument on and off
Arrow keys to navigate in the quick access area,
in menus, or in selection/character lists
Function keys to activate a key function displayed directly
above
1
2
3
4
5
6
1
7
8

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Fig. 2: Rear view of the instrument
1 Type plate with serial number
2 Screw of the battery compartment
2
1

E28IB004EN-G 15
5 Putting Snap 41 into Operation
5.1 Connecting the Filling Tube
Screw in the filling tube by hand until some resistance against further turning
can be felt. Tighten with your fingers only, do not use any tools.
Fig. 3: Connecting the filling tube
5.2 Mounting the Syringe Adapter
For some applications, filling with a syringe may be more convenient. To do
so, mount the syringe adapter.
1. Remove the screw plug (see fig. 1).
2. Screw in the adapter Luer ¼" UNF by hand until some resistance against
further turning can be felt. Tighten with your fingers only, do not use any
tools.
5.3 Switching the Instrument On/Off
• To switch Snap 41 on, tap and hold the key until the display lights up.
• To switch Snap 41 off, tap and hold the key until the instrument is
switched off.
TIP: For proper operation, cover the entire key area with your finger.
The instrument switches itself off after 5 minutes when idle and not moved.

16 E28IB004EN-G
6 Operating the Instrument
6.1 Main Screen
Fig. 4: Example main screen
Symbols in the header
Output fields
The alcohol content of the sample and the measuring temperature are
displayed on the main screen, each in an output field.
Status bar
The status bar shows the status of the instrument or a measurement. If
applicable, a progress bar will show the progress of activities.
1 Key functions
2 Status bar
3 Output field
4 Header
5 Battery charge status symbol
6 Quick access area
Symbol Description
The battery charge status symbol informs you about the battery
charge status.
The Bluetooth symbol shows in the header of the main screen
when data are sent via Bluetooth (software update).
1
2
3
45
6

E28IB004EN-G 17
6.2 Key Functions
The key functions correspond to the function keys below/above the display
(the assignment of keys adapts to the active selection). The following key
functions are available:
On the main screen, the right function key can assume the following functions
according to the icon selected in the quick access area:
Function Description
Back Leaves the menu and goes to the next higher menu level.
Cancel Aborts an operation.
Edit Switches into editing mode allowing you to change the
current selection.
Live “Unfreezes” the last measuring result and returns to showing
continuous live readings.
Menu Opens the main menu.
No Rejects a proposition.
OK Confirms a selection, or finishes a procedure.
Save Saves adjustment data.
Start Starts a procedure.
Yes Accepts a proposition.
Function Description
Check Quick access to the water check.
Sample Quick access to the selection of the measuring unit to be
displayed.
Start Quick access to start a measurement.
Status Quick access to the measurement status and any associated
warning or error message.

18 E28IB004EN-G
6.3 Quick Access Area
Use the arrow keys to select a quick access function. Activate the function
with the right function key.
The following quick access functions are available:
6.4 Menu Navigation
• Use the function keys to switch menus and to trigger selection-specific
activities.
• Use the arrow keys to navigate within menus and to select an item.
With longer screen content, a black scroll bar will show on the right side
of the scrollable area. Use the arrow keys to scroll through the content.
6.5 Selecting from a List
After you have switched into editing mode, you see a selection list folded out:
1. Use the arrow keys to select your choice.
2. Tap <OK> to confirm the selected value.
Tap <Cancel> to abort selection.
Icon Function
“Status” function
Use it to check the measurement status.
The status indicator can assume 3 states:
• green check mark: status OK
• yellow symbol with exclamation mark: there is a warning message
• red symbol with lightning: there is an error message
“Sample” function
Use it to select the measuring unit for the next measurement.
“Start” function
Use it to start a measurement.
“Check” function
Use it to initiate a water check.

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6.6 Operation by Gestures
You can start or abort a measurement by gestures instead of key operation.
To be able to do so, enable gesture control in the setup menu (see
section 7.4).
To start a measurement
• Turn the instrument to the right as shown in fig. 5, and hold the position
until the measurement starts.
Fig. 5: Instrument turned to the right
To abort a measurement
1. Turn the instrument to the left as shown in fig. 6, and hold the position
until a confirmation message appears.
Fig. 6: Instrument turned to the left
2. Confirm:
- To confirm canceling, turn the instrument to the left again as shown in
fig. 6, and hold the position until the measurement has stopped.
- To continue with the measurement, turn the instrument to the right as
shown in fig. 5.