OHAUS PX Series User manual

PX Series Balances
User Guide
Please download the user manual from www.ohaus.com.
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Update history
Item
Date
Version
Updated content
1
2022.6.28
G
Update 5. Technical Data
2023.9.12
H
Update 5. Technical Data
3 Update the company address
J
2023.4.26
2

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 hazardous 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
Alternating Current
Direct Current
Safety Precautions
CAUTION: Read all safety warnings before 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.
xVerify that the AC adapter’s input voltage range and plug type are compatible with the
local AC main power supply.
xMake sure that the power cord does not pose a potential obstacle or tripping hazard.
xDo not position the balance such that it is difficult to reach the power connection.
xThe balance is for indoor use only. Do not operate the equipment in hazardous or
unstable environments.
xOperate the equipment only under ambient conditions specified in these instructions.
xDo not drop loads on the pan.
xUse the balance only in dry locations.
xDisconnect the equipment from the power supply when cleaning.
xUse only approved accessories and peripherals.
xService 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.

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 balance 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.

EN-3
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 RS232
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.
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

EN-4
CONTROL FUNCTIONS
Button
Primary
Function
(Short
Press)

On / Zero
x If the
balance is Off,
turns on the balance.
x
If the balance is On,
sets zero.
Print
x Sends the current
displayed value to
the serial interface.
Function
x
Operation is
dependent on the
application mode.
Tare
x Performs tare
operation.
Secondary
Function
(Press and
Hold)


(Extended
Press)
Off
x
Zeros the current
value.
x None
Unit
x Changes weighing
units.
x
None
Mode
x
Changes
application mode.
x
None
Menu-Cal
x Enters the main
menu. Calibration
is the first sub
-
menu.
x Views the preset
Tare value.
Menu
Function
(Short
Press)

Yes
x
Accepts the current
(blinking) setting on
the display.
No
x Rejects the current
(blinking) setting on
the display.
x Increments a value
being entered.
Back
x Reverts back to
previous menu
item.
x
Decrements a
value being
entered.
Exit
x Immediately exits
the sub-
menu.
x
Aborts a
calibration in
progress.
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 o
bject on the pan. The
display indicates the gross weight.
Net (NET)
Stability (*)
Negative (-
)
Centre of Zero (>0<)
Preset tare (PT)
Instructional Messages
Result Field:
Information varies by
application
Unit

EN-5
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:
x Indoor use only
x Powered by external approved LPS AC/DC adaptor
x Altitude: Up to 2000 m
x Operating temperature range: 5 °C to 40 °C
x Specified Temperature range: 10°C to 30°C
x Humidity: maximum relative humidity 80% for temperatures up to 30°C, decreasing linearly to
50% relative humidity at 40°C
x Mains supply voltage fluctuations: up to ±10% of the nominal voltage
x Installation category II
x Pollution degree: 2
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


EN-6
InCal Model
PX163
PX223
PX323
PX423
PX523
ExCal Model
PX163/E
PX223/E
PX323/E
PX423/E
PX523/E
Capacity (g)
160
220
320
420
520
Readability d (g)
0.001
0.001
0.001
0.001
0.001
Repeatability (sd.), ≤5% of Full
Load (g)
0.0008 0.0008 0.0008 0.0008 0.0008
Repeatability (sd.), 5% of Full
Load to Full Range (g)
0.001 0.001 0.001 0.001 0.001
Linearity Deviation, Typical (g)
±0.0006
±0.0006
±0.0006
±0.0006
±0.0006
Linearity Deviation (g)
±0.002
±0.002
±0.002
±0.002
±0.002
Power Supply
Power input: 100-240V ~ 200mA 50-60Hz 12-18VA
Power output: 12 VDC 0.5A
InCal Model
PX623
PX822
PX1602
PX2202
ExCal Model
PX623/E
PX822/E
PX1602/E
PX2202/E
Capacity (g)
620
820
1600
2200
Readability d (g)
0.001
0.01
0.01
0.01
Repeatability (sd.), ≤5% of Full Load
(g)
0.0008 0.008 0.008 0.008
Repeatability (sd.), 5% of Full Load
to Full Range (g)
0.001 0.01 0.01 0.01
Linearity Deviation, Typical (g)
±0.0006
±0.006
±0.006
±0.006
Linearity Deviation (g)
±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
PX12001
ExCal Model
PX3202/E
PX4202/E
PX5202/E
PX6202/E
PX2201/E
PX4201/E
PX6201/E
PX8201/E
PX12001/E
Capacity (g)
3200
4200
5200
6200
2200
4200
6200
8200
12000
Readability d (g)
0.01
0.01
0.01
0.01
0.1
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
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
0.1
Linearity Deviation,
Typical (g)
±0.006
±0.006
±0.006
±0.006
±0.06
±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
±0.2
Power Supply
Power input: 100-240V ~ 200mA 50-60Hz 12-18VA
Power output: 12 VDC 0.5A
