OHAUS PX Series User manual

Balances
User Guide
English
Español
Français
Deutsch
Italiano
Português
Svenska
Nederlands
Dansk
Polski
Magyar

Update history
Item Date Version Updated content
1 2022.6.28 F Update the data table of chapter 5

EN-1
1. SAFETY INFORMATION
This manual contains installation, operation and maintenance instructions for PX Series balance. Please
read this manual completely before installation and operation.
Definition of Signal Warnings and Symbols
Safety notes are marked with signal words and warning symbols. These show safety issues and
warnings. Ignoring the safety notes may lead to personal injury, damage to the instrument, malfunctions
and false results.
WARNING For a h
azardous situation with medium risk, possibly resulting in
injuries or death if not avoided.
CAUTION For
a hazardous situation with low risk, resulting in damage to the
device or the property or in loss of data, or injuries if not avoided.
Attention For important information about the product
Note For useful information about the product
Warning Symbols
General Hazard Electrical Shock Hazard
Safety Precautions
CAUTION: Read all safety warnings be
fore installing, making connections, or
servicing this equipment. Failure to comply with these warnings could result in
personal injury and/or property damage. Retain all instructions for future reference.
Verify that the AC adapter’s input voltage range and plug type are compatible with the local AC
main power supply.
Make sure that the power cord does not pose a potential obstacle or tripping hazard.
Do not position the balance such that it is difficult to reach the power connection.
The balance is for indoor use only. Do not operate the equipment in hazardous or unstable
environments.
Operate the equipment only under ambient conditions specified in these instructions.
Do not drop loads on the pan.
Use the balance only in dry locations.
Disconnect the equipment from the power supply when cleaning.
Use only approved accessories and peripherals.
Service should only be performed by authorized personnel.
Intended Use
Use the instrument exclusively for weighing as described in the operating instructions. Any other type of
use and operation beyond the limits of technical specifications without written consent from OHAUS, is
considered as not intended.
This instrument complies with current industry standards and the recognized safety regulations; however,
it can constitute a hazard in use.
If the instrument is not used according to these operating instructions, the intended protection of the
instrument may be compromised and OHAUS assumes no liability.
Direct Current
Alternating Current

EN-2
2. INSTALLATION
2.1 Select the Location
Avoid heat sources, rapid temperature changes, air current or excessive vibrations. Allow sufficient
space.
2.2 Leveling
Be sure the bal
ance is level before it is used or after its location is
changed.
The PX balance has a level bubble in a
small round window
beside the display.
To level the balance, adjust the 4 leveling feet until the bubble is
centered in the circle.
Please refer to the right figure for leveling.
2.3 Connecting Power and Acclimatising the Balance
Connect the DC output connector to the power receptacle on the rear of the balance. Then connect the
AC adapter plug to a suitable electrical outlet.
Acclimatising
It is suggested that the balance should not be used until it has been connected to power and
acclimatised to the environment for a certain period of time. In the case of a balance with the precision
above 0.1 mg, the acclimatisation time should be 1.5 hours; in the case of balance with the precision of
0.01 mg, the acclimatisation time should be more than 4 hours.
2.4 Connecting the Interface
The PX balance has two data interfaces, RS232 and USB.
Use the RS-232 port to connect either to a computer or a printer with a standard (straight-through) serial
cable. Use the USB port to connect to a computer with a USB 2.0 Type A to Type B cable.
Interface connections on the rear of the balance
USB: Used to connect to PC only
RS232: Used to connect to PC or Printer
Note: For Connecting, Configuring and Testing the Printer / Computer Interface, see the Printing section.
RS232 USB

EN-3
2.5 Initial Calibration
For best results, the instrument's calibration should be checked prior to first use. If adjustment is needed,
refer to the Calibration section of the instruction manual.
3. OPERATION
3.1 Overview of Controls and Display
The PX balance has a 2-line backlit display.
CONTROLS
CONTROL FUNCTIONS
Button
Primary
Function
(Short
Press)
On / Zero
If the balance is Off,
turns on the
balance.
If the balance is On,
sets zero.
Print
Sends the current
displayed value to
the serial interface.
Function
Operation is
dependent on the
application mode.
Tare
Performs tare
operation.
Secondary
Function
(Press and
Hold)
(Extended
Press)
Off
Zeros the current
value.
None
Unit
Changes weighing
units.
None
Mode
Changes
application mode.
None
Menu-Cal
Enters the main
menu.
Calibration is
the first sub-
menu.
Views the preset
Tare value.
Menu
Function
(Short
Press)
Yes
Accepts the current
(blinking) setting on
the display.
No
Rejects the current
(blinking) setting
on the display.
Increments a value
being entered.
Back
Reverts back to
previous menu
item.
Decrements a
value being
entered.
Exit
Immediately
exits the sub-
menu.
Aborts a
calibration in
progress.

EN-4
DISPLAY
3.2 Principal Functions
Zeroing: Press Zero to zero the balance.
Taring: With no load on the pan, press Zero to set the display to zero. Place an empty container
on the pan and press Tare. Add material to the container and its net weight is displayed.
After the container and the objects are removed, the tare value will be displayed as a
negative number. Press Tare to clear.
Weighing: First press Zero to set the display to zero. Place an object on the pan. The display
indicates the gross weight.
Dot-matrix
Display:
The relevant data in the specific application mode are shown in the dot-matrix display
area.
4. MAINTENANCE
4.1 Cleaning
WARNING: Disconnect the balance from the power supply before cleaning.
Make sure that no liquid enters the interior of the balance.
Clean the balance at regular intervals.
Housing surfaces may be cleaned with a lint-free cloth slightly dampened with water or a mild
cleaning agent.
Glass surfaces may be cleaned with a commercial glass cleaner.
Attention: Do not use solvents, harsh chemicals, ammonia or abrasive cleaning agents.
4.2 Troubleshooting
If the troubleshooting section does not resolve your problem, contact an Authorized Ohaus Service
Agent. Please visit our website www.ohaus.com to locate the Ohaus office nearest you.
5. TECHNICAL DATA
The technical data is valid under the following conditions:
Indoor use only
Altitude: Up to 2000 m
Specified Temperature range: 10°C to 30°C
Humidity: maximum relative humidity 80% for temperatures up to 30°C, decreasing linearly to 50%
relative humidity at 40°C
Mains supply voltage fluctuations: up to ±10% of the nominal voltage
Installation category II
Pollution degree: 2
Result Field:
Information varies
by application
Unit
Instructional Messages
Net (NET)
Stability (*)
Negative (-)
Centre of Zero (>0<)
Preset tare (PT)

EN-5
InCal Model PX85 PX125D PX225D PX84 PX124 PX224
ExCal Model PX84/E PX124/E PX224/E
Maximum Capacity (g)
(Fine range/Full range) 82 52/120 82/220 82 120 220
Readability d, Fine Range (mg) 0.01 0.01 0.01 / / /
Readability d, Full Range (mg) 0.01 0.1 0.1 0.1 0.1 0.1
Repeatability (sd.) , 5% of Full Load
(mg) 0.01 0.01 0.01 0.08 0.08 0.08
Repeatability (sd.), 5% of Full Load to
Fine Range Max (mg) 0.02 0.02 0.02 / / /
Repeatability (sd. ), Fine Range Max
to Full Range 0.02 0.1 0.1 0.1 0.1 0.1
Linearity Deviation, Typical (mg) ± 0.06 ± 0.06 ± 0.06 ± 0.06 ± 0.06 ± 0.06
Linearity Deviation (mg) ± 0.1 ± 0.1 ± 0.1 ± 0.2 ± 0.2 ± 0.2
Power Supply Power input: 100-240V ~ 200mA 50-60Hz 12-18VA
Power output: 12 VDC 0.5A
InCal Model PX163 PX223 PX323 PX423 PX523 PX623 PX822 PX1602 PX2202
ExCal Model PX163/E PX223/E PX323/E PX423/E PX523/E PX623/E PX822/E PX1602/E PX2202/E
Capacity (g) 160 220 320 420 520 620 820 1600 2200
Readability d (g) 0.001 0.001 0.001 0.001 0.001 0.001 0.01 0.01 0.01
Repeatability (sd.),
5% of Full Load (g) 0.0008 0.0008 0.0008 0.0008 0.0008 0.0008 0.008 0.008 0.008
Repeatability (sd.), 5%
of Full Load to Full
Range (g)
0.001 0.001 0.001 0.001 0.001 0.001 0.01 0.01 0.01
Linearity Deviation,
Typical (g) ±0.0006 ±0.0006 ±0.0006 ±0.0006 ±0.0006 ±0.0006 ±0.006 ±0.006 ±0.006
Linearity Deviation (g) ±0.002 ±0.002 ±0.002 ±0.002 ±0.002 ±0.002 ±0.02 ±0.02 ±0.02
Power Supply Power input: 100-240V ~ 200mA 50-60Hz 12-18VA
Power output: 12 VDC 0.5A
InCal Model PX3202 PX4202 PX5202 PX6202 PX2201 PX4201
ExCal Model PX3202/E PX4202/E PX5202/E PX6202/E PX2201/E PX4201/E PX6201/E PX8201/E
Capacity (g) 3200 4200 5200 6200 2200 4200 6200 8200
Readability d (g) 0.01 0.01 0.01 0.01 0.1 0.1 0.1 0.1
Repeatability (sd.), 5% of
Full Load (g) 0.008 0.008 0.008 0.008 0.08 0.08 0.08 0.08
Repeatability (sd.), 5% of Full
Load to Full Range (g) 0.01 0.01 0.01 0.01 0.1 0.1 0.1 0.1
Linearity Deviation, Typical
(g) ±0.006 ±0.006 ±0.006 ±0.006 ±0.06 ±0.06 ±0.06 ±0.06
Linearity Deviation (g) ±0.02 ±0.02 ±0.02 ±0.02 ±0.2 ±0.2 ±0.2 ±0.2
Power Supply Power input: 100-240V ~ 200mA 50-60Hz 12-18VA
Power output: 12 VDC 0.5A

EN-6
InCal Approval Model PX125DM PX225DM PX85M PX124M PX224M PX323M PX523M PX623M
Maximum Capacity
(Fine range/Full range)
(g)
52/120 82/220 82 120 220 320 520 620
Readability d, Fine
Range (g) 0.00001 0.00001 0.00001 / / / / /
Readability d, Full
Range (g) 0.0001 0.0001 0.00001 0.0001 0.0001 0.001 0.001 0.001
Verification Interval e
(g) 0.001 0.001 0.001 0.001 0.001 0.01 0.01 0.01
Class I I I I I II II II
Repeatability (sd.) ,
5% of Full Load (g) 0.00001 0.00001 0.00001 0.00008 0.00008 0.0008 0.0008 0.0008
Repeatability (sd.), 5%
of Full Load to Fine
Range Max (g)
0.00002 0.00002 0.00002 / / / / /
Repeatability (sd. ) ,
Fine Range Max to
Full Range (g)
0.0001 0.0001 0.00002 0.0001 0.0001 0.001 0.001 0.001
Linearity Deviation,
Typical (g) ± 0.00006 ± 0.00006 ± 0.00006 ± 0.00006 ± 0.00006 ± 0.0006 ± 0.0006 ± 0.0006
Linearity Deviation (g) ± 0.0001 ± 0.0001 ± 0.0001 ± 0.0002 ± 0.0002 ± 0.002 ± 0.002 ± 0.002
Power Supply Power input: 100-240V ~ 200mA 50-60Hz 12-18VA
Power output 12 VDC 0.5A
InCal Approval Model PX3202M PX5202M PX6202M PX4201M
Capacity (g) 3200 5200 6200 4200
Readability d (g) 0.01 0.01 0.01 0.1
Verification Interval e (g) 0.1 0.1 0.1 0.1
Class II II II II
Repeatability (sd.) ,
(g) 0.008 0.008 0.008 0.08
Repeatability (sd.), 5% of Full Load to
Full Range (g) 0.01 0.01 0.01 0.1
Linearity Deviation, Typical (g) ± 0.006 ± 0.006 ± 0.006 ± 0.06
Linearity Deviation (g) ± 0.02 ± 0.02 ± 0.02 ± 0.2
Power Supply Power input: 100-240V ~ 200mA 50-60Hz 12-18VA
Power output 12 VDC 0.5A

EN-7
6. COMPLIANCE
Compliance to the following standards is indicated by the corresponding mark on the product.
Important notice for PX/PXP/PJX/PR…M verified weighing instruments in the EU and UK
When the instrument is used in trade or a legally controlled application it must be set up, verified and
sealed in accordance with local weights and measures regulations. It is the responsibility of the
purchaser to ensure that all pertinent legal requirements are met.
Weighing Instruments verified at the place of manufacture bear the following supplementary metrology
marking on the descriptive plate.
Weighing Instruments to be verified in two stages have no supplementary metrology marking on the
descriptive plate. The second stage of conformity assessment must be carried out by the applicable
weights and measures authorities.
If national regulations limit the validity period of the verification, the user of the weighing instrument must
strictly observe the re-verification period and inform the weights and measures authorities.
As verification requirements vary by jurisdiction, the purchaser should contact their local weights and
measures office if they are not familiar with the requirements.
ISED Canada Compliance Statement:
This Class B digital apparatus complies with Canadian ICES-003.
ISO 9001 Registration
The management system governing the production of this product is ISO 9001 certified.
Mark Standard
This product complies with the applicable harmonized standards of EU Directives
2011/65/EU (RoHS), 2014/30/EU (EMC), 2014/35/EU (LVD) and 2014/31/EU (NAWI).
The EU Declaration of Conformity is available online at www.ohaus.com/ce.
This product complies with the applicable statutory standards of the Restriction of the Use
of Certain Hazardous Substances in Electrical and Electronic Equipment Regulations
2012, UK Electromagnetic Compatibility Regulations 2016, Electrical Equipment (Safety)
Regulations 2016 and Non-Automatic Weighing Instruments Regulations 2016. The UK
Declaration of Conformity is available online at www.ohaus.com/uk-declarations.
This product complies with the EU Directive 2012/19/EU (WEEE) and 2006/66/EC
(Batteries). Please dispose of this product in accordance with local regulations at the
collecting point specified for electrical and electronic equipment.
For disposal instructions in Europe, refer to www.ohaus.com/weee.
EN 61326-1
CAN/CSA-C22.2 No. 61010-1
UL Std. No. 61010-1

EN-8
FCC Supplier Declaration of Conformity
Unintentional Radiator per 47CFR Part B
Trade Name: OHAUS CORPORATION
Model or Family identification: PX/PXP/PJX/PR
Issuing Party that Assembled the Product:
Ohaus Instruments (Changzhou) Co., Ltd.
2F, 22 Block, 538 West Hehai Road, Xinbei District, Changzhou
Jiangsu 213022
China
Phone: [phone]
Responsible Party – U.S. Contact Information:
Ohaus Corporation
7 Campus Drive, Suite 310
Parsippany, NJ 07054
United States
Phone: [phone]
Web: www.ohaus.com
FCC Compliance Statement:
Note: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation. If this equipment does cause harmful interference to radio or television reception, which
can be determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
—Reorient or relocate the receiving antenna.
—Increase the separation between the equipment and receiver.
—Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
—Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance could void the
user’s authority to operate the equipment.