TOOLOTS ES-HB Series Analytical Balances or Scales User Manual

: October 30, 2023
: TOOLOTS

Table of Contents

TOOLOTS ES-HB Series Analytical Balances
Product Information
Product Usage Instructions
Operation
Troubleshooting
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TOOLOTS ES-HB Series Analytical Balances

Thank you for purchasing and using the ES-HBseriesbalances, The balances weigh and measure with high precision load cell, microcomputer, and big liquid crystal display screen, which have the advantage of simple operation, speedy weighing, accuracy, stability, and so on, please read this manual carefully before using this product, in order to make full use of this product with the function and the troubleshooting to help you.

Product Information

The ES-HB series balances are precision weighing instruments that use a load cell, microcomputer, and a large liquid crystal display screen to accurately measure weight. They are easy to operate and provide fast, stable, and accurate readings. The product comes with a structure diagram, display and buttons information, an adaptor, operation instructions, RS-232C communication details, and troubleshooting tips.

Product Usage Instructions

Structure Diagram
Refer to the structure diagram to understand the different parts and components of the ES-HB series balance.

Display and Buttons
Use the buttons on the balance to turn it on/off (Power), calibrate the machine (CAL), exchange units (Unit), zero the weight (Zero), print data (Print), and tare the weight (Tare). Refer to the ASCII code table to understand the code for each button.

BUTTON	FUNCTION	ASCII CODE
Power	ON/OFF the machine	0x4F+0x0D+0x0A
CAL	Calibrate the machine	0x43+0x0D+0x0A
Unit	Exchange the units	0x55+0x0D+0x0A
Zero	Weight zero	0x4D+0x0D+0x0A
Print	Date print	0x50+0x0D+0x0A
Tare	Tare	0x54+0x0D+0x0A

Adaptor

The ES-HB series balance requires a DC 6V/200mA adaptor to function properly.

Operation

Follow these instructions to use the ES-HB series balance:

To tare the weight, press Tare. The balance will display the net weight. If the current weight is below zero, pressing the Tare button will show an ERROR message indicating tare failure. After entering the net weight, tare operation will be prohibited, otherwise an ERROR message will appear indicating tare failure.
To exit net weighing, remove the tare items, press Zero button, and enter the gross weighing state.
To enter percentage weighing, press Unit key when pcs unit is opened. If you need to resample, remove the object from the platform, and press Tare or Zero key to display 0. Press CAL key to display PEr=xxx, where xxx indicates the percentage value of the sample. Press CAL key to change the quantity value. If the weight does not vary within 5 seconds, the balance will automatically enter percentage sample and then percentage weighing. If the balance displays an ERROR message, it indicates that the sample’s weight is too light.
To select units, press and hold the Unit key until the display unit symbol appears. The balance will show different units (g, kg, ct, oz, oztl, bl, tldwt, gn, pcs, %), and at the same time, it will display On or Off. Use the Unit key to switch On and Off.

ON/OFF the Machine
With no load on the platform, Put the round plug of AC adapter into the square hole on the back of the balance, then put AC adapter into an alternating outlet, or install 6 alkaline batteries AA SIZE in the battery holder at the bottom of the balance (pay attention to the Plus(+) and minus(-) ends), press the “Power” button to turn on the balance, and the balance will display the capacity and division, and then “0” will show, Press“Zero”to zero, and Normal weighing can be started on, Press“Power”to turn off the balance, It should be noted that the balance has an initial auto zero function, and the initial auto zero range is 20% of capacity, if beyond the range, it will show “ERROR”, that means initial auto zero failure.

Zero Operation
Under the non-net weighing state. Take away all objects from the platform , and press “zero” button to display “0”, “zero” zero indicator appears, then put the objects on the center of the platform, when the unit symbol stop flashing, then the weight can be read. The maximum zero allowable range is ±2% of the capacity, if beyond the range, it will show “ERROR”, that means zero failure.

Tare Operation
Press “Tare” to tare, and the balance display “Net” symbol. If the current weight below zero point, press the “Tare” button will show “ERROR”, That means tare failure. After entering the net weight, it will prohibit tare operation, otherwise appear “ERROR” and tare failure. If you want to exit the net weighing, remove the tare items, press “Zero” button, enter the gross weighing state.

Calibration
Important note: before calibrate, Please cut the calibrate seal rope and open the calibrate screws at the bottom of the balance, then pull calibrate switch which in the bottom of the balance to “cal”, otherwise it is unable to enter the calibration procedure and display “error”. After calibration, pull the calibrate switch to“LOCK”and tighten the screws, then sealed screw. Take away all objects from the platform , and press “CAL” button, the balance enter auto zero calibrate, and then the balance display“Load” and calibrate weight value, according to the shown weight value, put the corresponding calibrating weight on the center of the platform. a few seconds later, calibrate is over.You can press“CAL”to exit calibrate at any time.

Counting Function（pcs）
When “pcs” unit is opened，Press “Unit” key switch to “pcs”，and the balance enters the counting state. If you need resample for counting, please take away the object from the platform, and press “Tare” or “Zero” key, the balance will display “0”,then press “CAL” key，“PCS=xxx” will display，“xxx” indicate the quantity value of samples，and press “CAL” key to change the quantity value，when the weight is no variety within 5 seconds, it will auto enter Counting sample and then counting weighing.

NOTE: If the balance displays “ERROR”，that indicates the samples’ weight is too light.

Percentage Setting Function
When “pcs” unit is opened，Press “Unit” key to switches to “%” and enter percentage weighing；if you need resample, please take away the object from the platform, and press “Tare” or “Zero” key to display“0”，the press “CAL” key to display “PEr=xxx”，and “xxx” indicate the percentage value of sample, press “CAL” key to change the quantity value，when the weight is no variety within 5 seconds, it will auto enter percentage sample and then percentage weighing.

Unit Selection
This balance has the function to select these units: g、kg、ct、oz、 ozt、lb、l、tl、dwt、gn、pcs、%, these units can be set to open and close, Press and hold “Unit” key until display “unit” symbol, the balance will show the above units, and at the same time the balance will display“On”or “OFF”, please “Unit”key to switch “On” and“OFF”.

RS-232C Communication

If you want to connect the ES-HB series balance to a PC or printer, use an RS232C interface. The wiring diagram is provided in the manual. The baud rate is 9600bps, check bit is None, data bit is 8Bit stop bite is 1Bit, and input instruction format should be read. The output data format is 4 bytes of steady state code (STAB or UNST) ++7 bytes of data code +3 byte unit code +2 byte end code, all characters are ASCII code.

RS-232C RS232C interface: Connecting to PC or printer, Wiring diagram is as follows

Baud rate = 9600bps，check bit = None，data bit =8Bit， stop bite=1Bit, input instruction format please read “Button” function；output data format: 4 bytes of steady state code(STAB or UNST) +“：”+7 bytes of data code +3 byte unit code +2 byte end code, all the characters are ASCII code

Troubleshooting

If you encounter any issues with the ES-HB series balance, refer to the troubleshooting section of the manual. Some of the common issues include no display, incorrect weight reading, power adapter not connected, dead or weak batteries, incorrect calibration, and incorrect weights being used.