RS PRO ES-H Series User manual

ES-H, ES-HA Series Precision Balance
Thank you for purchasing the Model ES-H and ES-HA precision balance.
Please read all operating instructions carefully before using and note the
following items to ensure accurate readings.
1.0 Description
·The ES-H, ES-HA balances use a high precision load cell and
microcomputer for simple operation with accurate, stable weight readings
displayed on the large liquid crystal display.
·This balance is an excellent choice for laboratory use and educational
applications, however, it is not recommended for use in production lines,
food preparation areas or any other environment where high heat, cold,
humidity or vibration are present.
·Do not overload the balance. This will damage the load cell and void the
warranty.
·Inspect the platter, draft shield, housing and AC adapter regularly for
damage.
·Refer to the troubleshooting chart at the end of this manual for more
details.
·Do not attempt to repair the balance if you have a problem. Contact your
local representative.
2.0 Unpacking
Please check the contents of this box carefully. Your ES-H, ES-HA balance
should come with one of each of the following:
·Electronic Balance
·Stainless Steel Weighing Platform
·6V AC Power Adapter
·User Manual
3.0 Installation
·Place the balance on a stable, level surface.
·Level the balance using the adjustable feet and level bubble.
·Remove the protective film from the stainless steel platform.

·Gently place the weighing platform on the mounting posts on the top of
the base of the balance. The base’s posts should fit easily into the holes
on the bottom of the platform and the platform should be flat and level.
Note: Do not force the platform as this can damage the balance.
·Connect the AC adapter to the receptacle at the rear of the balance.
·Connect the AC adapter to an appropriate power outlet.
Note: You can also operate this unit using batteries instead of the supplied
AC adapter. Batteries are not included with the unit.
4.0 Key Functions
The following figure shows the front panel with six keys. Each key function is
explained here.
On/Off
Count Cal Tare Mode Units
g/oz
On/Off
Count
Cal
Tare
Mode
Units
Turns the balance on or off or returnsbalance to normal weighing
mode.
Places the balance in piece count mode.
(stands for Calibrate) Enters calibration mode.
Used to tare off, up to 100% of balance capacity, an empty
container and to reset the balance to zero. Use of tare with a
weight or container reduces the scale’s capacity by the tare value
stored. Also works like Enter in some modes.
Toggles the backlight on or off. To extend battery life, turn
backlight off. Also toggles between options in calibration mode.
Allows you to scroll through and select from the available units (g,
oz, ozt, dwt, lb) as well as count (ct) and percentage (%).
5.0 Scale Operation
This section covers the scale operations of weighing and counting.
Note: Always make sure that the balance is on a clean, dry, level and solid
surface.

Simple Weighing
1. Turn the balance on. The balance will go through a series of tests and
then display all zeroes (0’s).
2. Press the Units key until the desired unit of measure is displayed on the
far right of the display.
3. Press the Tare key if the display no longer reads zero.
4. Place item(s) to be weighed on the weighing platform. The weight will
be displayed with the appropriate unit of measure next to it.
5. Remove the item(s) from the balance and repeat steps 2 - 5 to continue
weighing.
Tare Weighing
If you want to do net weighing, such as weighing objects in a container, follow
these steps.
1. Turn the balance on. The balance will go through a series of tests and
then display all zeroes (0’s).
2. Press the Units key until the desired unit of measure is displayed on the
far right of the display.
3. Place the container to be tared on the weighing platform and press the
Tare key. The display should return to zero.
4. Place item(s) to be weighed in the container. The weight will be
displayed with the appropriate unit of measure next to it. The weight
displayed is the net weight and does not include the weight of the
container.
5. Remove the item(s) from the container and repeat steps 3 - 5 to
continue weighing with the same container.
Note: If you remove the container, the balance will show a negative weight.
Press the Tare key to return the balance to zero.
General Counting Function
The ES-H series will count parts based on the weight of a reference sample of
5, 10, 20, 30, 40 or 50 pieces. For best results, the pieces used should be of
equal weight. Also, the larger the sample, the more accurate your counts will
be. Once you have created this reference sample, it will remain in memory
until a new sample is recorded, even when the balance if turned off. This
section explains the counting function in further detail.

1. Turn the balance on and allow it to come to zero.
2. Press the Count key. The balance will display “CON pcs”.
Note: If you are using a container to hold the pieces, place the empty
container on the weighing platform at this point.
3. Press Tare. The balance will display the message “Add 5”.
4. Press Mode until the number of pieces in your sample is displayed. You
can choose from 5, 10, 20, 30, 40 or 50.
5. Place your sample on the platform and press Tare.
6. There will be a short pause and then the balance will show the number
of the sample on the screen.
Note: If the balance displays the message “PC Err”, the sample size was too
small for the balance and a larger sample will be required.
7. Remove the sample from the balance. The balance is now ready to
count.
8. Add pieces to the balance / container. The balance will show the
number of pieces on the display.
9. Press the Units key to exit piece counting and return to normal
weighing. You can return to piece counting by pressing the Units key
until “pcs” is displayed.
General Percentage Function
The % refers to the percentage function of the ES-H series scales. You can
achieve this by following these steps:
1. Put the object on the platform, after reading is stable, press and hold
the “TARE” key until it displays 100%, this means that the scale defines
the current weight as 100%.
2. Put a new object on the platform, the display gives you a percentage
based off of the define weight in step 1.
6.0 Calibration
Occasionally, you may need to calibrate your balance with an appropriate
weight. There are two types of calibration possible: sensitivity calibration and
linear calibration. Linear calibration should only be attempted by a qualified
service technician with correct weights. This section explains how to perform
each type of calibration.

Sensitivity Calibration
1. With the scale in regular weighing mode, press the Tare key to zero the
balance.
2. Press the Cal key.The balance will show “Scale”.
3. Press the Tare key. The balance will display one of the accepted
calibration weights.
Note: The balance can only be calibrated in grams.
4. Press the Mode key to toggle between available calibration weights.
5. Press Tare. The balance will flash “0” briefly and then flash the
calibration weight.
6. Place the correct amount of weight (in grams) on the platform and press
the Tare key.
7. The calibration weight will continue to flash briefly and then become
stable.
8. Once the weight is stable, remove the weight from the balance. The
scale has now been calibrated and is in regular weigh mode.
9. Press the Tare key if the scale does not return to zero.
Linear Calibration
1.
2.
3.
4.
In regular weighing mode, press the Tare key to zero the balance.
Press the Cal key. The balance will show “Scale”.
Press the Mode key. The balance will show “Line”
Press Tare. The balance will flash “0” briefly and then flash the first
calibration weight.
5. Place the correct amount of weight (in grams) on the platform and press
the Tare key.
6. The balance will flash the next calibration weight.
7. Place the appropriate amount of weight on the weighing platter and
press Tare.
8. The calibration weight will continue to flash briefly and then become
stable.
9. Once the weight is stable, remove the weight from the balance. The
scale has now been calibrated and is in regular weigh mode.
10.Press the Tare key if the scale does not return to zero.

Command
Response
Command
Response
O
Off
T
Tare
M
Displays the Counts
F
Mode
C
Cal
U
Units
P
Percentage
7.0 Communications & Printing
The ES-H, ES-HA balances can be connected to a PC or appropriate printer
using a null modem cable (not supplied). The balance will transmit the gross
or net weight and unit or the number of pieces if you are using the piece
counting function.
Connecting to PC
1. Connect the appropriate cable to the 9 pin D connector on the balance.
2. Connect the other end to an available COM port on your PC.
RS232 Data
Baud Rate = 9600
Data Bits = 8
Balance RS232
connector Sample PC RS232 connector
Parity = None
Stop Bits = 1
Note: When connecting to a PC or other device, you must cross the transmit
and receive lines.
3. Start HyperTerminal or similar utility.
The table below shows a list of available commands and their responses.
Note: All commands are capital letters. There is no carriage return after the
command.
Table 1: Available Serial Commands

Care and Maintenance
Your precision balance does not require a lot of maintenance, however, there
are a few things you can do to keep your balance operating properly.
1. Keep the balance housing and weighing platform clean and free of
debris. Clean with a soft cloth dampened with detergent as necessary.
2. Unplug the AC adapter when not in use.
3. Remove batteries for long term storage. (See the section on battery
replacement.)
Battery replacement
You can expect approximately 15 hours of use when powering the balance
with batteries. Use only alkaline batteries of the correct size and pay close
attention to the markings (+ or -) inside the battery compartment.
Your balance should look similar to one of the two pictured below. Detailed
instructions are for models using screws to hold the lid in place only.
1. Remove the two screws holding the battery compartment lid on the
bottom of the scale
2. Gently pry up the battery cover and remove.
3. Insert the correct number of batteries.
4. Replace cover and tighten screws.
5. Return balance to upright position and press the On/Off key to turn the
scale on and resume normal weighing or counting functions.

Problem
Cause(s)
Solution(s)
Err 0
This typically indicates that
the
platform is too light.
Ensure that the stainless steel cover is properly in
place. Turn the scale off and remove the platform.
Replace the platform and reapply power. If error
persists, the weight sensor or circuit board may be
faulty and you should contact your distributor.
Err 1
Overweight error. The
sample
is too heavy for the balance.
Remove some of the sample. If sample is within
the
balance capacity, balance may need to be
calibrated.
Err 2
Underweight error. This error
is similar to Err 0 as it
indicates that the platform is
not properly installed.
Power off the balance and re-seat the platform
before
reapplying power to the balance. The balance
may
need to be calibrated.
Err 3
Non-zero error. This
indicates
that there was weight on the
balance during power up.
Remove any weight(s) from the platform, turn the
balance off and back on.
F1 AZT
A key was pressed during
power up.
Turn the balance off and back on again.
F2 Cnt
A key was pressed during
power up.
Turn the balance off and back on again.
Incorrect Weight
Reading
Balance was not set to zero
or
was not calibrated.
Press Tare to zero the balance. Calibrate the
balance
as necessary.
No Display
Power adapter not properly
connected or batteries are
dead.
Reconnect power adapter or replace batteries.
Table 2: Error Codes and Troubleshooting

MODEL
ES-300H
ES-600H
ES-1000H
ES-3000H
ES-4000H
Capacity &
Resolution
300 x 0.01 g
600 x 0.01 g
1000 x 0.01 g
3000 x 0.1 g
4000 x 0.1 g
MODEL
ES-1200H
ES-2002H
ES-3002H
ES-6000H
ES-8000H
Capacity &
Resolution
1200 x0 .01g
2000 x0.01g
3000 x 0.01g
6000 x 0.1 g
8000 x 0.1 g
STD Deviation (d)
+/-3d
Linearity (d)
+/-3d
Corner Deviation (d)
+/-3d
Tare Range
100%
Overload Capacity
Maximum Capacity+9e
Stabilization
Time
(s)
3 seconds
Applicable
Temperature Range
10° - 35° C
50° - 95° F
0Power Source
AC Adapter (included)or 6 AA Batteries (not included)
Pan Size
120 mm diameter
(approx. 4.7 in.)
172 mm x 172 mm
(approx. 6.8 in x 6.8 in)
Housing
Dimensions
251 (L) x 172 (W) x 58 (H) mm
(approx. 9.9 x 6.8 x 2.3 in)
Net Weight
1050 g
2.2lb
1000 g
2.1lb
8.0 Specifications
Table 3: Specifications

MODEL
ES-300HA
ES-400HA
ES-500HA
ES-103HA
ES-123HA
Capacity &
Resolution
300 x 0.01 g
400 x 0.01 g
500 x 0.01 g
100 x 0.001 g
120 x 0.001 g
MODEL
ES-600HA
ES-1000HA
ES-1200HA
ES-203HA
ES-303HA
Capacity &
Resolution
600 x 0 .01g
1000 x 0.01g
1200 x 0.01 g
200 x 0.001 g
300 x 0.001 g
STD Deviation (d)
+/-3d
+/-4d
Linearity (d)
+/-3d
+/-4d
Corner Deviation (d)
+/-3d
+/-4d
Tare Range
100%+/-4d
Overload Capacity
Maximum Capacity+9e
Stabilization
Time (s)
3 seconds
Applicable
Temperature Range
10° - 35° C
50° - 95° F
Power Source
AC Adapter (included)or 6 AA
Batteries (not included)
Pan Size
120 mm diameter
(approx. 4.7 in.)
Housing
Dimensions
251 (L) x 172 (W) x 58 (H) mm
(approx. 9.9 x 6.8 x 2.3 in)
Net Weight
980 g
2.1 lbs
Table 3: Specifications

Declarations of compliance
United States
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.
Canada
This digital apparatus does not exceed the Class A limits for radio noise
emissions from digital apparatus set out in the Radio Interference Regulations
of the Canadian Department of Communications.
Le présent appareil numérique n’émet pas de bruits radioélectriques
dépassant les limites applicables aux appareils numériques de la Classe A
prescrites dans le Règlement sur le brouillage radioélectrique edicté par le
ministère des Communications du Canada.
EMC compliance
The following warning may be applicable to your machine.
WARNING: This is a class A product. In a domestic environment this product
may cause radio interference in which case the user may be required to take
adequate measures.

Declaration of Conformity
Manufacturer
Type ES-H, ES-HA
Corresponds to the requirements of the following EC directives:-
Electro Magnetic Compatibility
Low Voltage Directive:
The application harmonised standards
are:
EMC 89/336/EEC
LVD 2006/95/EC
EN60950-1: 2002, EN61000-6-3: 2001
EN61000-6-1:2007
A copy of the original signed Declaration of Conformity is available on
request.