Schmidt EAR Series User manual

Area Weight Balance
EAR Series
Model EAR-300
Edition EAR 01.E
Instruction Manual
Valid as of: 01.09.2019 • Please keep the manual for future reference!
S C H M I D T
c o n t r o l i n s t r u m e n t s

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Contents
1 Warranty and Liability .............................................................................................. 3
1.1 Notices within the Operating Instructions............................................................... 3
1.2 Responsibilities of the Operating Company ........................................................... 3
1.3 Responsibilities of the Personnel ........................................................................... 3
1.4 Informal Safety Measures ...................................................................................... 4
1.5 Training of the Personnel ....................................................................................... 4
1.6 Intended Use.......................................................................................................... 4
1.7 Dangers in Handling the Device............................................................................. 4
1.8 Copyright................................................................................................................ 4
1.9 Declaration of Conformity, RoHs II and WEEE Registration.................................. 4
2 Specifications ........................................................................................................... 5
2.1 Delivery Includes.................................................................................................... 5
2.2 Unpacking and Assembly....................................................................................... 5
3 Initial Setup and Operating Procedure ................................................................... 6
3.0 Notices Before Starting Measurement ................................................................... 6
3.1 Operating Elements ............................................................................................... 6
3.1.1 Display Details.................................................................................................. 6
3.1.2 Aligning the Instrument..................................................................................... 7
3.2 Connecting the AC Adapter ................................................................................... 7
3.2.1 Switch-On......................................................................................................... 7
3.2.2 Switch-Off......................................................................................................... 7
3.3 Settings .................................................................................................................. 8
3.3.1 Function Settings.............................................................................................. 8
3.3.2 Measuring Mode Selection............................................................................. 10
3.3.3 Zero Setting (ZERO)....................................................................................... 10
3.4 Measuring Procedure........................................................................................... 10
3.4.1 Standard Measuring Procedure...................................................................... 10
3.4.2 Measuring Procedure with Container (tare subtractive weighing).................. 11
3.4.3 Error Messages .............................................................................................. 12
3.5 Calibration of the Instrument ................................................................................ 12
4 Service and Maintenance....................................................................................... 14
5 Cleaning................................................................................................................... 14
6 Correspondence ..................................................................................................... 14
7 Repairs..................................................................................................................... 14

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All persons who work with the device agree to perform the following duties before starting
work:
- to observe the basic regulations on industrial safety and accident prevention.
- to read the chapter on safety and the warning notices in these Operating Instructions
and to confirm with their signatures that they have understood them.
1 Warranty and Liability
In principle, the supply of the device is subject to our “General Conditions of Sale and Deliv-
ery.” These have been provided to the operating company on conclusion of the contract, at
the latest.
Warranty:
- SCHMIDT area weight balances are warranted for 12 months.
Parts subject to wear, electronic components and measuring springs are not covered by
the warranty. No warranty or liability will be accepted for bodily injury or property damage
resulting from one or several of the following causes:
- Misuse or abuse of the device.
- Improper mounting, commissioning, operation and maintenance of the device
(e.g. verification interval).
- Operation of the device if any safeguards are defective or if any safety and protection
precautions are not properly installed or not operative.
- Failure to comply with the notices in the Operating Instructions regarding transport,
storage, mounting, commissioning, operation, maintenance and setup of the device.
- Any unauthorized structural alteration of the device.
- Insufficient inspection of device components that are subject to wear.
- Opening the device or improper repair work.
- Disasters caused by the effects of foreign objects or by force majeure.
1.1 Notices within the Operating Instructions
The fundamental prerequisite for the safe handling of this device and its troublefree opera-
tion is the knowledge of the basic safety notices and safety instructions.
These Operating Instructions contain the most important notices for the safe operation of
the device.
These Operating Instructions, in particular the safety notices, must be observed by any
person who works with the device. In addition, the local valid rules and regulations for the
prevention of accidents must be complied with.
The representations within the Operating Instructions are not true to scale.
The dimensions given are not binding.
General indications of direction, such as FRONT, REAR, RIGHT, LEFT apply when view-
ing the front of the device.
1.2 Responsibilities of the Operating Company
In compliance with the EC Directive 89/655/EEC, the operating company agrees to only
permit persons to work with the device who:
- are familiar with the basic regulations on industrial safety and accident prevention and
who have been trained in handling the device.
- have read and understood the chapter on safety and the warning notices in these
Operating Instructions and have confirmed this with their signatures.
- are examined regularly on their safe and conscientious working method.
1.3 Responsibilities of the Personnel

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1.4 Informal Safety Measures
The Operating Instructions must always be kept on hand where the device is operated.
Apart from the Operating Instructions, the general and local valid regulations on accident
prevention and environmental protection must be provided and complied with.
1.5 Training of the Personnel
Only trained and instructed personnel is permitted to work with the device. The responsi-
bilities of the personnel must be clearly defined for mounting, commissioning, operation,
setup, maintenance, and repair. Trainees may only work with the device under the super-
vision of experienced personnel.
1.6 Intended Use
The device is intended exclusively to be used as a balance. Any other use or any use
exceeding this intention will be regarded as misuse. Under no circumstances shall HANS
SCHMIDT & Co GmbH be held liable for damage resulting from misuse.
The intended use also includes:
- Complying with all notices included in the Operating Instructions and observing all
inspection and maintenance works.
1.7 Dangers in Handling the Device
The device was designed according to the state of the art and the approved safety stan-
dards. Nevertheless, its use may cause serious or fatal injury to the user or third persons,
and/or an impairment of the device or of other material assets.
The device may only be applied:
- For its intended use in a faultless condition with regard to the safety requirements.
- Malfunctions that could impair safety must be remedied immediately.
- Personal protective equipment must be used according to the EC Directive 89/686/EEC.
The device must not be operated in potential explosive areas and must not
come into contact with aggressive substances.
1.8 Copyright
The copyright on these Operating Instructions remains with the company
HANS SCHMIDT & Co GmbH.
These Operating Instructions are intended for the operating company and its personnel
only. They contain instructions and notices that may only be reproduced on the prior writ-
ten permission of
HANS SCHMIDT & Co GmbH
and under indication of the complete reference data.
Violations will be prosecuted.
1.9 Declaration of Conformity, RoHs II and WEEE Registration
In compliance with the EU Directives 2014/30/EU and 2011/65/EU
HANS SCHMIDT & CO GmbH is registered in compliance with
the German Electrical and Electronic Equipment Act (ElektroG)
under WEEE Reg. No. DE 48092317.

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Capacity (weight mode): 300 g
Capacity (area weight mode): 30 000 g/m²
Sample size: 100 cm²
Resolution (weight mode): 0.01 g
Resolution (area weight mode): 1g/m²
Accuracy (weight mode): ± 0.01 g
Accuracy (area weight mode): ± 1 g/m²
Platform size (mm): 120 ø
Power supply: Rechargeable battery DC 9 V/500 mA
12 h continuous use, 10 h charging time
AC adapter: 100 - 240 V AC - 50/60 Hz
Temperature range: 15 - 40° C
Air humidity: 85% RH, max.
Weight (net / gross):Approx. 1.7 kg / 2.7 kg
Dimensions (mm): 211 L x 185 W x 59 H
2 Specifications
Balance
1 AC adapter, 100 - 240 V
1 Calibration weight 200 g
1 Operating Instructions
Test certificate not available.
2.1 Delivery Includes
2.2 Unpacking and Assembly
- Unpack the EAR-300.
- Inspect the EAR-300 for any shipping damage.
Should you find any damage, immediately notify
the vendor.
Notices of defect must be filed immediately,
in writing, at the latest within 7 days on receipt
of the goods.
Assembly:
- Remove the rubber cap from the weighing shaft
- Carefully press the support plate 12 onto the
weighing shaft 13.
- Mount the support plate with the hexagon socket
screw by using the hex-wrench with max. 0.2 Nm.
- Place the sample platform 11 on the support
plate.
Removal:
- To remove the sample platform 11 and the
support plate 12 proceed in the reverse
order.
11
12
13
The support plate must be removed for transport to avoid damage of
the balance.

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Have you read and understood the Operating Instructions, in particular Chap-
ter 1 “Basic Safety Notices”? You are not permitted to operate the device be-
fore doing so. Before working with the device you must put on your personal
protective clothing, if necessary. For example, eye protectors, gloves, etc.
The ID plate with the serial number is provided on the back side of the instru-
ment and the CE mark as well.
3 Initial Setup and Operating Procedure
3.0 Notices Before Starting Measurement
3.1.1 Display Details
Reading
ready symbol
Zero symbol
NET symbol
reading in g
reading in g/m²
3.1 Operating Elements
1 Platform Sample measuring plate
2 Charge LED Lights up while charging
3 Display See Chapter 3.1.1
4 Off button Switches the balance On
5 Mode button Toggles between “g” and “g/m²”
6 Tare key For determining the net weight with the packaging on
7 Base feet 4 adjustable feet at the bottom of the instrument
8 On/Zero key For switching on and zero setting of the balance
9 Bubbel level For horizontal alignment of the balance
10 Connector For connecting the AC adapter
fig. 3.1
1
2
3
4
56
7
8
9
10
fig. 3.1.1

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Requirements:
- AC adapter connected or battery charged.
- Press the button.
The display momentarily shows and then counts
from down to . The display then indicates the
instrument model followed by .
Once complete, the zero point is set automatically (auto zero) and the balance is ready
to measure. Zero setting can also be carried out manually if you have enabled the cor-
responding function as described in Chapter 3.3.1.
3.2.1 Switch-On
3.2 Connecting the AC Adapter
The instrument features a rechargeable battery. Besides battery operation, it can also be
run using the supplied AC adapter.
When the battery is low, the display indicates .
3.2.2 Switch-Off
Auto power off:
- The instrument switches off automatically after a certain time of non-use. The timeout
can be set as described in Chapter 3.3.1. Three warning tones are issued before the
unit powers off. The switch-off procedure cannot be canceled.
Manual switch-off:
- Press the button.
To connect the AC adapter:
- Plug in the AC adapter cable at the
power connector. fig. 3.2
Polarity of the connector
Before connecting the AC adapter, check the supply voltage.
Claims for warranty or liability will not be accepted for AC adapters from other
manufacturers.
The built-in battery is also recharged when the instrument is on. An empty battery
needs to be charged for at least 10 hours. If you have not used the instrument for
a longer time, you will need to recharge the battery to make full use of the battery
capacity.
In the case of continuous use with the AC adapter connected and a fully charged
battery, you must disconnect the AC adapter after work to prevent overloading
and thus damage to the battery.
3.1.2 Aligning the Instrument
Before switching on the instrument, the balance must
be set up in such a way that it is exactly horizontal.
This means: The air bubble of the level must be pre-
cisely in the middle of the marking.
The instrument is provided with four setscrews on the
bottom for horizontal alignment.
Level
Air Bubble
Marking
fig. 3.1.2
After switching on the instrument, allow approx. 30 minutes for thermal stabiliza-
tion
When the battery is being charged, the charge LED will remain on until the battery
has been fully charged.

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3.3 Settings
General information:
The settings for:
- Zero setting (auto zero)
- Timeout
- Display backlight
- Calibration weight
of the balance can be changed in the following way.
Requirement:
Instrument switched off as described in Chapter 3.2.2.
Zero setting:
- Press and hold the button and switch on the instrument with the button.
The display shows .
- By pressing the button, you can now choose between
Manual zero setting
Automatic zero setting
No function .
The default setting is automatic zero setting.
- You can now either return to the measuring mode by pressing the button
five times
or
Press the button once to set the
Timeout:
- By pressing the button, you can now choose between
No power off
Power off after 5 min.
Power off after 10 min.
Power off after 20 min.
Power off after 30 min.
of non-use.
The default setting is power off after 20 min.
- You can now either return to the measuring mode by pressing the button
four times
or
Press the button once to set the
3.3.1 Function Settings

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Display Backlight:
- By pressing the button, you can now choose between
No backlight
Permanent backlight
Backlight while weighing .
The default setting is backlight while weighing.
- You can now either return to the measuring mode by pressing the button
three times
or
Press the button once to set the
Calibration Weight:
- By pressing the button, you can now choose between
Calibration weight 50 g
Calibration weight 100 g
Calibration weight 150 g
Calibration weight 200 g
Calibration weight 300 g
The default setting is calibration weight 200 g
- Press the button.
The display shows .
- Press the button.
The display counts from down to .
The display then indicates the instrument model
followed by .
3.3.1 Function Settings (Cont.)
The settings you last made remain stored in the EAR memory even after the
instrument is switched off.

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3.3.2 Measuring Mode Selection
You can change the measuring mode from grams per square meter (g/m²) to grams (g).
Example:
- The instrument is set to grams/m².
The display shows g and mm.
- Press the button.
The instrument switches from grams/m² to grams.
- Press the button.
The instrument is reset to the zero point (auto zero).
The display shows the selected measuring mode.
3.3.3 Zero Setting (ZERO)
After selecting the measuring mode, you have to set the instrument to zero.
To carry out zero setting:
- Press the button.
The display shows according to the mode or ,
the symbol appears left below in the display.
Mode g
Mode g/m²
3.4 Measuring Procedure
3.4.1 Standard Measuring Procedure
Requirements:
- Instrument switched on as described in chapter 3.2.1.
Function settings selected as required, as described in
chapters 3.3.1 and 3.3.2.
The ready symbol is displayed.
- Zero setting (auto zero) carried out as described in chapter
3.3.3.
To measure the process material:
- Place the sample to be measured on the platform.
The READY symbol must be shown on the display to ensure that the display
indicates correct readings.
- Before starting the next measurement, make sure that the ready symbol is displayed.
Ready symbol

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The available measuring range of the instrument can be reduced by the tare weight.
For example:
Measuring range 300 g
Minus tare (container etc.) 50 g
Remaining measuring range 250 g
Requirements:
- Instrument switched on as described in chapter 3.2.1.
Function settings selected as required, as described in chapters 3.3.1 and 3.3.2.
The ready symbol is displayed.
- Zero setting (auto zero) carried out as described in
chapter 3.3.3.
To measure with the tare function:
- Place the container on the platform.
- Press the button, the display shows .
NET appears under the ready symbol.
The tare has been subtracted from the measuring range.
The ready symbol must be shown on the display to ensure that the display
indicates correct readings.
To leave the tare function:
- Remove the container from the platform and press the button.
The display shows .
- Press the button.
The instrument is reset to the zero point (auto zero).
3.4.2 Measuring Procedure with Container (tare subtractive weighing)
Ready symbol

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3.5 Calibration of the Instrument
The balance is supplied with a 200 g calibration weight for recalibrating the instrument on
site or checking the measurement accuracy.
Requirement:
Instrument switched off as described in chapter 3.2.2.
The calibration weight is adjusted according chapter 3.3.1
There is no sample or container on the platform.
To calibrate the instrument:
- Press the button.
The display shows .
- Press the button for 3 seconds
- The display shows momentarily the adjusted calibration weight and
than is flashing.
- Place the calibration weight on the platform.
- Wait until the display has stabilized and shows .
- Remove the calibration weight from the platform.
After the calibration has occured the display shows momentarily and
than .
If the calibration occurs not with the adjusted calibration weight, the display shows
momentarily and than .
3.4.3 Error Messages
Overload:
The display shows .
The weight on the platform exceeds the measuring range.
Underload:
The display shows .
The platform has not been placed on the instrument.
Remedy:
- Place the platform on the support plate.
Zero setting not possible:
The switch-on procedure of the instrument is interrupted.
The display shows .
The platform is not placed on the balance or a weight greater than 20 % of the
measuring range has been placed on the platform.

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3.5 Calibration of the Instrument (Cont.)
Do not subject the instrument to shock or vibration during
calibration.
Press the keys gently and not too quickly in succession.
Platform
Calibration Weight
fig. 3.5

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4 Service and Maintenance
The instrument is easy to maintain. Depending on operating time and load, the instrument
should be checked according to the locally valid regulations and conditions (as described
in Chapter 3.5). The use of other test methods than the procedure described in Chapter 3.5
may cause deviating measuring results.
5 Cleaning
For cleaning the unit, do not use any
AGGRESSIVE SOLVENTS
such as trichloroethylene or similar chemicals.
NO WARRANTY OR LIABILITY
shall be accepted for damage resulting from improper cleaning.
Should you have any questions regarding the instrument or Operating Instructions, or their
use, please indicate above all the following details which are given on the ID plate:
1.) Model
2.) Serial number
6 Correspondence
To avoid unnecessary follow-up questions, and the resulting loss of time or pos-
sible misunderstandings, please return the instrument with a detailed fault de-
scription to our service department.
7 Repairs
HANS SCHMIDT & Co GmbH
Schichtstr. 16
84478 Waldkraiburg
Germany
Service address:
Shipping instructions:
We kindly ask for return free of charge for us, if possible by airmail parcel. All occurring
charges, if any (such as freight, customs clearance, duty etc.), will be billed to customer.
For return from foreign countries, we ask you to include a proforma invoice with a low value
for customs clearance only, e.g. 50 Euro, each and to advise the shipment in advance by
fax or eMail.

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Note:

SCHMIDT-Test-Instruments
indispensable in production monitoring,
quality control and automation
We solve your measuring problems:
Tension Meter
Force Gauge
Torque Meter
Tachometer
Speed- and Lengthmeter
Electronic Lengthmeter
Stroboscope
Screen Printing Tension Meter
Thickness Gauge
Yarn Package Durometer and Shore-A Durometer
Sample Cutter
Balance
Moisture Meter
Leak Tester
Softometer
Mailing address:
P. O. B. 1154
84464 Waldkraiburg Germany
Shipping address:
Schichtstr. 16
84478 Waldkraiburg Germany
Hans Schmidt & Co GmbH
Phone:
int. + 49 / (0)8638 / 9410-0
Fax:
int. + 49 / (0)8638 / 4825
int. + 49 / (0)8638 / 67898
More than 70 years - Worldwide -
e-mail:
[email protected]
Internet:
http://www.hans-schmidt.com
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