Ohaus Explorer Pro User Manual
Explorer Pro
Instruction Manual
Declaration of Conformity
The undersigned, representing the following manufacturer
Ohaus Corporation
19A Chapin Road
PO Box 2033
Pine Brook, NJ 07058 USA
hereby declares that the following products are in conformity with the EEC directives listed below (including any and all modifications).
Balance models: EP64,EP64C, EP64CN, EP64CM, EP114, EP114C, EP114CN, EP114CM, EP164, EP214, EP214C, EP214CN, EP214CM, EP214D, EP214DC,
EP214DCN, EP214DCM, EP213, EP213N, EP213C, EP213CN, EP213CM, EP413, EP413N, EP413C, EP413CN, EP413CM, EP513CM, EP613, EP613C,
EP613CN, EP613CM, EP413D, EP413DN, EP413DC, EP413DCN, EP413DCM, EP612, EP612N, EP612C, EP612CN, EP612CM, EP1502, EP2102, EP2102N,
EP2102C, EP2102CN, EP2102CM, EP4102, EP4102N, EP4102C, EP4102CN, EP4102CM, EP6102, EP6102N, EP6102C, EP6102CN, EP6102CM, EP4102D,
EP4102DN, EP4102DC, EP4102DC, EP4102DCM, EP410, EP4101N, EP4101C, EP4101CN, EP4101CM, EP6101, EP6101N, EP6101C, EP6101CN,
EP6101CM, EP810, EP8101N, EP8101C, EP8101CN, EP8101CM, EPG114, EPG114C, EPG2102, EPG2102C, EPG213, EPG213C, EPG214, EPG214C,
EPG214D, EPG214DC, EPG4101, EPG4101C, EPG4102, EPG4102C, EPG4102D, EPG4102DC, EPG413, EPG413C, EPG413C, EPG413D, EPG413DC,
EPG6101, EPG6101C, EPG6101C, EPG6102, EPG6102C, EPG612, EPG612C, EPG613, EPG613C, EPG64, EPG64C, EPG8101, EPG8101C
Marked with: EC Directive (Including applicable amendments) Standard
73/23/EC IEC 1010 -1:1990 + A1: 92 + A2: 95
Electrical equipment for use within specified Safety requirements for Electrical Equipment for Measurement,
voltage limits Control Laboratory Use, Part 1: General Requirements
CE marking affixed in 97
89/336/EC EN61326: -1:1997 (class B) + A1: 1998
Electromagnetic compatibility EMC Emissions, residential, commercial and light industry.
EN61326: -1:1997 A1:1998 (industrial requirements)
EMC Immunity.
EN61000-3-2:1995 + A1:1998 + A2: 1998; EN61000-3-3:1995
EMC Part 3 (for equipment rated input current < or=16A)
Limits- Section 2: Limits for harmonic current emissions
Limits- section 3: Limitation of voltage fluctuations and flicker in low
voltage supply systems
xx
ISO 9001 Registration for Ohaus Corporation.
tional, BVQI, and was awarded ISO 9001 registration. This certifies that Ohaus Corporation, USA, has a quality system that conforms with the international
standards for quality management and quality assurance (ISO 9000 series). Repeat audits are carried out by BVQI at intervals to check that the quality
system is operated in the proper manner.
Additional Standards
CAN/CSA-C22.2 No. 1010.1-92; UL Std. No. 3101-1
Safety requirements for Electrical Equip. for measurement, Control and Laboratory Use, Part 1; General Requirements
FCC
FCC, Part 15, class A Emission
EU 90/384 NAWI EN45501:1992 Non Automatic Weighing Instruments
T2914
xx= year CE affixed
Ohaus Corporation, USA, was examined and evaluated in 1994 by the Bureau Veritas Quality Interna-
Ted Xia
President
Ohaus Corporation
Pine Brook, NJ USA
Date: March 6, 2003
Johan Dierbach
General Manager
Ohaus Europe
Greifensee, Switzerland
Date: March 6, 2003
AS/NZS4251.1 AS/NZS4252.1 Emission and Immunity
315
Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are
designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates,
uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the
interference at his own expense.
This Class A digital apparatus complies with Canadian ICES-003.
Cet appareil numérique de la classe A est conforme à la norme NMB-003 du Canada
Explorer Pro EN-1
TABLE OF CONTENTS
1. INTRODUCTION...................................................................................................................................... EN-3
1.1 Description ........................................................................................................................................... EN-3
1.2 Features ............................................................................................................................................... EN-3
1.3 Safety Precautions ................................................................................................................................. EN-3
2. INSTALLATION ....................................................................................................................................... EN-3
2.1 Unpacking ............................................................................................................................................ EN-3
2.2 Installing Components ............................................................................................................................ EN-4
2.2.1 Platform Installation .................................................................................................................... EN-4
2.2.2 Windshield Installation ................................................................................................................ EN-4
2.2.3 Weigh Below Preparation ............................................................................................................. EN-4
2.3. Selecting the Location ............................................................................................................................ EN-5
2.3.1 Balance Location ........................................................................................................................ EN-5
2.3.2 Leveling the Balance ................................................................................................................... EN-5
2.4 Connecting Power and Communications .................................................................................................. EN-6
2.4.1 AC Adapter Installation ................................................................................................................. EN-6
2.4.2 RS232 Interface .......................................................................................................................... EN-6
2.4.3 Initial Calibration......................................................................................................................... EN-7
3. OPERATION .............................................................................................................................................. EN-8
3.1 Overview of Controls .............................................................................................................................. EN-8
3.2 Overview of Display Indicator ................................................................................................................ EN-10
3.3 Menu ................................................................................................................................................. EN-11
3.3.1 Menu Structure ......................................................................................................................... EN-11
3.3.2 Navigation ............................................................................................................................... EN-11
3.3.3 Turning On the Balance ............................................................................................................. EN-11
3.4 Applications ........................................................................................................................................ EN-12
3.4.1 Weighing ................................................................................................................................. EN-12
3.4.2 Parts Counting .......................................................................................................................... EN-13
3.4.3 Percent Weighing ...................................................................................................................... EN-17
3.4.4 Animal Weighing ...................................................................................................................... EN-19
3.4.5 Check Weighing ....................................................................................................................... EN-20
3.4.6 Gross/Net/Tare Weighing ........................................................................................................... EN-21
3.4.7 Filling ...................................................................................................................................... EN-22
3.5 Balance Settings .................................................................................................................................. EN-23
3.5.1 Calibration ............................................................................................................................... EN-23
3.5.2 Balance Options ....................................................................................................................... EN-24
3.5.3 Readout ................................................................................................................................... EN-25
3.5.4 Application Modes .................................................................................................................... EN-26
3.5.5 Units ........................................................................................................................................ EN-26
EN-2 Explorer Pro
TABLE OF CONTENTS (Cont.)
3.5.6 Interface .................................................................................................................................. EN-27
3.5.7 Print Options ........................................................................................................................... EN-28
3.5.8 GLP Print Options ..................................................................................................................... EN-28
3.5.9 Lockout .................................................................................................................................. EN-29
3.5.10 Factory reset ............................................................................................................................ EN-29
3.9.11 LFT Legal for Trade ................................................................................................................... EN-30
3.5.12 Hardware Lock Switch .............................................................................................................. EN-30
3.5.13 Sealing the Balance ................................................................................................................. EN-30
3.6 Printing Data ....................................................................................................................................... EN-30
4. CARE AND MAINTENANCE ........................................................................................................................ EN-31
4.1 Cleaning ............................................................................................................................................. EN-31
4.2 Troubleshooting ................................................................................................................................... EN-31
4.3 Error Codes List ................................................................................................................................... EN-32
4.4 Service Information .............................................................................................................................. EN-33
4.5 Replacement Parts ............................................................................................................................... EN-33
4.6 Accessories......................................................................................................................................... EN-33
5. TECHNICAL DATA ...................................................................................................................................... EN-34
5.1 RS232 Commands .............................................................................................................................. EN-34
5.2 Specifications ...................................................................................................................................... EN-35
Explorer Pro EN-3
1. INTRODUCTION
1.1 Description
Thank you for deciding to purchase an Explorer Pro
Balance from Ohaus. Explorer® Pros software design allows
direct access to 7 application modes and all menus. The backlit
dot matrix display, is capable displaying either limited or multiple
data fields at each application. Explorer® Pros optional AutoCal
automatically calibrates the balance due to temperature changes
that may affect calibration. Panel controls and soft key functions
on the display clearly indicate functions and data. Operation is
extremely simplified, you enter a menu, select an item, modify
the item according to menu selections and exit.
Capacities from 62 grams to 8,100 grams are available. Legal
for Trade versions are also available.
To ensure you make full use of the possibilities offered by your
Explorer
operating instructions.
®
Pro balance, we advise you to read through these
1.2 Features
Ready to weigh without complicated setup
3 soft keys are application mode specific.
Operating languages include English, Spanish, French,
German and Italian.
Simplified menu navigation and balance setup.
Capacity Bar guide and Fill bar guide.
Flexibility to display either simple weighing results or
more advanced results including piece count, average piece
weight, sample size, tare weight, weight, under and over.
Dot Matrix display with backlight
Weighing, Parts Counting, Animal Weighing, Percent
Weighing, Check Weighing, Gross/Net/Tare Weighing and
Filling.
®
2. INSTALLATION
2.1 Unpacking
Open the package and remove the instrument and the
accessories. Check the completeness of the delivery. The
following accessories are part of the standard equipment of your
new Explorer® Pro balance.
Pan 3.5, 90mm Round - Analytical 62g, 110g, 162g, 210g,
210/100g
Pan 4.7", 120mm Round - Precision 210g 410g, 510, 610g,
410/100g
Pan 6.8", 152mm Square (0.01 g units) - Precision 610g,
1500g, 2100g, 4100g, 6100g, 4100/1000g
Pan 8", 203mm Square (0.1 g units) - Precision* 6100g,
4100g, 8100g
Draft Shield - Analytical 62g, 110g, 162g, 210g, 210/100g
Draft Shield (0.001g units)- Precision 210g 410g, 610g,
410/100g
Wind Shield (0.01g Units) - Precision 610g, 1550g, 2100g,
4100g, 6100g, 4100/1000g
* 4100 g, 6100 g and 8100 g balances with internal calibration
are equipped with a 6" Pan and Windshield.
The following items are supplied with all balances:
AC Power Adapter, Instruction Manual, Warranty Card, In Use
Cover
Remove packing material from the instrument.
Check the instrument for transport damage. Immediately
inform your Ohaus dealer if you have complaints or parts
are missing.
Store all parts of the packaging. This packaging
guarantees the best possible protection for the transport of your
instrument.
1.3 Safety Precautions
Please follow the safety precautions as listed.
CAUTION:
Do not operate the balance around corrosive fumes.
Only use the adapter provided with the balance.
Do not try to service the Explorer® Pro balance.
EN-4 Explorer Pro
BOTTOM OF BALANCE
WEIGH BELOW
HOOK LOCATION
REMOVE
PROTECTIVE
COVER.
WEIGH BELOW
HOOK IS INSIDE OF
BALANCE.
2.2 Installing Components
2.2.1 Platform Installation
Balances are shipped with the pan not installed. On balances
equipped with a draft shield, slide open the side door and insert
the pan into the center hole.
2.2.2 Windshield Installation
On 610 g to 6100 g balances with 0.01 g resolution, a wind-
shield is required to reduce the possibility of air currents from
disturbing the pan. When the windshield is in place, air currents
are deflected up over the pan. Make sure the windshield is firmly
snapped into place.
Wind Shield
NOTE: 4100 g, 6100 g and 8100 g balances with internal
calibration are equipped with a 6" Pan and Windshield.
2.2.3 Weigh Below Preparation
The Explorer Pro balance is equipped with a weigh below hook
at the bottom of the balance. To use this feature, remove the
protective cover underneath the balance. See illustration for
location. The balance can be supported using lab jacks or any
other convenient method. Make sure the balance is level and
secure. Apply power and operate the balance. Attach items to be
weighed to the hook underneath the balance.
Explorer Pro EN-5
2.3 Selecting the Location
2.3.1 Balance Location
The balance should always be used in an environment which is
free from excessive air currents, corrosives, vibration, and
temperature or humidity extremes. These factors will affect
displayed weight readings.
DO NOT install the balance:
Next to open windows or doors causing drafts or rapid
temperature changes.
Near air conditioning or heat vents.
Near vibrating, rotating or reciprocating equipment.
Near magnetic fields or equipment that generates magnetic
fields.
On an unlevel work surface.
Allow sufficient space around the instrument for ease of
operation and keep away from radiating heat sources.
2.3.2 Leveling the Balance
Exact horizontal positioning and stable installation are
prerequisites for repeatable results. To compensate for small
irregularities or inclinations at the location, the instrument can
be leveled.
For exact horizontal positioning, the balance is equipped with a
level indicator located at the front on the control panel and two
leveling feet located at the rear of the balance.
Position the balance in the intended operating location. Adjust
the leveling feet at the rear of the balance until the air bubble in
the indicator is centered.
NOTE: The instrument should be leveled each time its location is
changed.
Correct Incorrect
Leveling Indicator
Leveling
Foot
EN-6 Explorer Pro
12345
6789
2.4 Connecting Power and Communications
2.4.1 AC Adapter Installation
Connect the AC Adapter supplied to the three pin connector located
at the rear of the balance.
The balance is now ready for operation.
AC Adapter Connection
Rear of Balance
2.4.2 RS232 Interface
Explorer Pro balances are equipped with a bidirectional RS232
compatible interface for communication with serial printers and
computers. When the balance is connected directly to a printer,
displayed data can be output at any time by simply pressing the
Print button, or by using the Auto Print feature. Connecting the
balance to a computer enables you to operate the balance from
the computer, as well as receive data such as displayed weight,
weighing mode, stability status, etc.
Male Connector
The following sections describe the hardware and software
provided with the balance
Hardware
On the rear of the balance, the right-hand, 9-pin male subminiature
D connector is provided for interfacing to other devices. The
pinout and pin connections are shown in the adjacent illustration.
Refer to paragraph 3.5.6 for setup.
The balance is equipped with hardware handshaking, it will not
output any data unless pin 5 (CTS) is held in a high state (+3 to
+15 V dc). Interfaces not utilizing the CTS handshake may tie pin
5 to pin 6 to defeat it.
Output Formats
Data output can be initiated in one of three ways: 1) By pressing
PRINT; 2) Using the Auto Print feature; 3) Sending a print
command (P) from a computer.
1 N/C
2 Data Out (TXD)
3 Data In (RXD)
4N/C
5 Clear To Send (CTS)
6 Data Terminal Ready (DTR)
7 Ground
8 Request To Send (RTS)
9N/C
Additional information is located in Section 5, Technical Data
which contains the RS232 Command Table.
Explorer Pro EN-7
2.4.3 Initial Calibration
Calibration Masses
Calibration masses are required if the balance is not equipped
with internal calibration. Before beginning calibration, make sure
masses are available. If you begin calibration and realize
calibration masses are not available, exit the menu. The balance
will retain previously stored calibration data. Calibration should
be performed as necessary to ensure accurate weighing. Masses
required to perform the procedures are listed in the following table.
NOTE: Any of the calibration modes can be terminated at any
time by pressing the Menu button.
CALIBRATION MASSES
LINEARITY SPAN ONLY
CAPACITY MASSES MASSES
62 g 20g/50 g 50 g
162 g 50g/150 g 150 g
110 g 50g/100 g 100 g
210 g 100g/200 g 200 g
410 g 200g/400 g 400 g
510g/610 g 200g/500 g 500 g
1550 g 500g/1500 g 1500 g
2100 g 1000g/2000 g 2000 g
4100 g 2000g/4000 g 4000 g
6100 g 2000g/5000 g 5000 g
8100 g 4000g/8000 g 8000 g
It is recommended that masses must meet or exceed ASTM
Class 1 Tolerance. Calibration masses are available as
accessories.
Calibrating from the Weighing Screen
When the balance is first turned on, three soft keys appear on
the weighing screen. The CALIBRATE soft key is highlighted.
This permits calibration immediately without entering the
CALIBRATION menu. On balances equipped with internal
calibration, the balance automatically calibrates. On balances
that do not have internal calibration, an external mass is required.
WEIGHING 01/01/03 03:05:45: PM
UNITS
*
0g
Press the Enter button with the CALIBRATE soft key highlighted.
On balances that do not have internal calibration, a message
appears on screen indicating the mass value to be placed on the
pan and also indicates other values of masses that can be used.
Place the required mass on the pan and press the Enter button.
The balance performs a span calibration.
2nd UNITS
CALIBRATE
0.00
0.00g
g
6100g
EN-8 Explorer Pro
3 OPERATION
3.1 Overview of Controls
1
WEIGHING 01/01/03 03:05:45: PM
13
UNITS
*
2nd UNITS
0.00
12
11
10
9
0g
8
No. Designation Function
1 I Power On/ Off button.
CALIBRATE
0.00g
g
6100g
7
10
2
3
4
5
9
6
7
14
2 button When pressed in Menu mode, single press moves menu selection bar in an up direction and
highlights the activated field or changes the settings of a selected field in increasing order.
When at an alphanumeric field, then the number or letter is incremented.
3 button When pressed in Menu mode, single press moves the cursor within a alphanumeric field
to the left (example date 07/02/2003). Selection does not wrap at end.
In application mode, single press moves to the next soft key selection to the left.
4 button When pressed in Menu mode, single press moves the cursor within a alphanumeric field
to the right (example date 07/02/2003). Selection does not wrap at end.
In application mode, single press moves to the next soft key selection to the right.
Explorer Pro EN-9
No. Designation Function
5
6 Enter button When pressed in application modes, functions as an Enter button to accept Soft-key selection.
7 & 9 >O/T< buttons When pressed, performs tare function or zero function.
8 Spirit Level Provides a leveling indication for the balance.
10 LCD Display Backlit LCD display provides all necessary indications for operation.
11 Mode button When pressed, causes the balance to cycle through all active application modes.
12 Print button When pressed in any application mode, causes a print function to occur.
button When pressed In Menu mode, single press moves menu selection bar in a down direction
and highlights the selected field or changes the settings of a selected field in decreasing
order.
When at an alphanumeric field, then the number or letter is decremented.
When pressed in menu, functions as an Accept button for accepting and saving
parameter of selected items.
13 Menu button When pressed in any application mode, will bring up the Menu screen. Pressing the button
within a Menu screen will return to the application mode.
14 Feet Two adjustable feet used to level the balance.
EN-10 Explorer Pro
3.2 Overview of Display Indicator
12
WEIGHING 01/01/03 03:05:45: PM
UNITS
Message Line
13
12
11
No. Designation Function
1 Application Indicates the active application by function.
2 Date Indicates current date when properly set.
*
-
Result Line Result Line
Result Line Result Line
Result Line Result Line
0g
200.0000
0
2nd UNITS CALIBRATE
10
3
dwt
6100g
4
5
6
7
8
9
3 Time Indicates current time when properly set.
4 Soft Keys Three Soft-keys are displayed in the upper display area. Depending on the application mode
selected, the functionality changes. A Soft-key can be selected by using the left and right
arrow buttons. Pressing the Enter button on a highlighted soft-key will activate the
function.
5 Message Line Contains instructional messages.
6 Numerical Display Indicates primary weight/load.
7 Unit of measure Indicates active unit of measure.
8 Result Lines 1-6 Six lines that contain balance results.
9 Capacity Indicates full balance capacity.
10 Bar Graph Shaded area indicates capacity used for, under, accept, over for check weighing application,
or target values for filling application.
11 Indicates center of zero (only active in legal for trade).
0
12 Indicates negative value.
13 Stability indicator.
*
Explorer Pro EN-11
3.3 Menu
3.3.1 Menu Structure
The Explorer Pro balance utilizes a menu structure that permits
entering various menus by using a dedicated Menu button.
Pressing the Menu button allows access to additional sub menus.
See illustration below.
MENU
Calibration
Balance Options
Readout
Application Modes
Units
Interface
Print Options
GLP Print Options
Lockout
Factory Reset
Exit
3.3.2 Navigation
When the balance is first turned on, the main weighing screen is
displayed. To enter the menu and to change parameters, the
following controls are used:
To select a highlighted menu, press the Enter button. Each menu
item contains a display that allows setting balance parameters
to individual requirements. These are described in detail in section
3.5 Balance Settings.
Section 3.5.1 describes Calibration procedures and section 3.4
describes the Applications.
3.3.3 Turning on the Balance
The Explorer Pro balance is ready to operate after the installation
procedures are performed. When the balance is first turned on
and it completes its checks, it can be used to weigh or tare
materials without setting the menus.
It is recommended that you read this manual carefully and set
the balance to operate to your specific applications before using.
Power On/Off
To turn the balance ON, press the On/Off button. To turn OFF,
press the button again.
Menu button - When pressed, enters the Menu.
Enter button- When pressed, accepts the menu field selections.
- Scrolls up through the menus.
-Scrolls down through the menus.
- Moves the cursor within the field to the left.
- Moves the cursor within the field to the right.
There are two ways to exit the Menu; one is to scroll to Exit and
press the Enter button, the other is to press the Menu button. All
changes will be saved.
Stabilization
Before initially using the balance, allow time for it to adjust to its
new environment. The balance only requires to be plugged in to
warm up.
Recommended warm up period is twenty (20) minutes. Analytical
Class I balances require at least 2 hours.
The internal circuits of the balance are powered whenever it is
plugged into a power source.
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