Kilotech KHA Series User manual

KILOTECH
KHA SERIES
ELECTRONIC BALANCE
INSTRUCTION MANUAL
MAN12122018

Thank you for purchasing a high quality Kilotech KHA precision balance. The KHA will give you
accurate readings as long as you give it the proper care and maintenance.
1.Description
The Kilotech KHA series electronic balances are constructed for weighing and measuring with a high
precision load cell, microcomputer and big liquid crystal display screen. It has the advantage of a simple
operation, speedy weighing, accuracy and stability.
The KHA series is an excellent low priced precision balance which is well suited for laboratory and
educational applications. They should not be used in production lines, in food preparation or any other
environment where high heat, cold, humidity or vibration are a factor. The KHA series is widely used in
laboratories in factories, mines, institutions, agriculture, water conservation, medicine, food analysis,
precious goods etc.
2. Construction and installation
⑴
⑴⑴
⑴ Draft shield
Draft shieldDraft shield
Draft shield
⑵
⑵⑵
⑵ Weighing Platform
Weighing PlatformWeighing Platform
Weighing Platform
⑶
⑶⑶
⑶ Body
BodyBody
Body
⑷
⑷⑷
⑷ Leveling bubble
Leveling bubbleLeveling bubble
Leveling bubble
⑸
⑸⑸
⑸ Display Window
Display WindowDisplay Window
Display Window
⑹
⑹⑹
⑹ Function buttons
Function buttonsFunction buttons
Function buttons
⑺
⑺⑺
⑺ Adjust Feet
Adjust FeetAdjust Feet
Adjust Feet
3. Packing list
Please check the contents of this box carefully.
•One electronic balance and weighing platform.
•One AC adapter
•One draft shield (On 0.01g models only)
•One operation instruction manual

•One calibration weight (With 200g and 600g only)
Weight standard to use when calibrating.
Mode KHA 200 KHA 600 KHA 1000 KHA 201 KHA 601 KHA 1201 KHA 2401 KHA 5001
Cal.
Weight
100/200g 200/500g 500/1000g 100/200g 200/600g 500/1200g 1000/2400g 2000/5000g
4. Operation
Always make sure that the balance is level and on a solid surface in order to eliminate vibration as
much as possible. Only use the balance in a clean and dry environment.
4.1 Turn ON
Use either the AC adapter or install 4alkaline AA SIZE batteries (not included) in the battery compartment under
the balance. With no load on the platform, press “ ”.
All the segments of the indicator will be shown, then the software version is displayed. When “0” is displayed, the
balance can be used.
4.2 Turn off
To turn OFF the balance, press “ ”.
4.3 Weighing method
Press “TARE” to set the display to zero. Put the object to be weighted on the platform . Wait until the measuring unit
symbol (example “g”) appears and is stable, then the weight can be read.
4.4 Balance calibration
Two types of calibration can be done:
Balance sensitivity (SCALE is displayed),
Balance linearity (LINE is displayed).
When precision weighing is done, calibrate the balance as follows:
4.4.1 Sensitivity calibration
1. Empty the platform.
2. Press “TARE” to put balance to 0.
3. Press “CAL” and the balance will display “SCALE”.
4. Press “TARE” and the balance will display a weight required for calibration. When calibrating the balance
sensitivity, two different weight values can be used (interchangeable). You can press “MODE” to display a
second weight that can be used to do sensitivity calibration. Select one of the two requested weights.
5. Press “TARE”. The weight will flash.
6. Put the corresponding test weight on the center of the platform. The display will continue flashing for a few
seconds and stop flashing but still showing the weight of the test weight.
7. Calibration is complete.
8. Remove the test weight from the platform. Normal weighing can be done.
4.4.2 Linear calibration
1. Empty the platform.
2. Press “TARE” to put balance to 0.
3. Press “CAL” and the balance will display “SCALE”.
4. Press “MODE” and the balance will display “LINE”.
5. Press “TARE” and the balance will display the first weight required for calibration.
6. Put the corresponding test weight on the platform. The same weight value will flash while the balance is
calibrating.

7. The display will change to show (and flash) the 2
nd
weight value. Put the corresponding weight on the
platform. The weight value will flash while the balance is calibrating.
8. In a few seconds, the balance will stop flashing and will display the 2nd capacity weight value.
NOTE:
•Press “CAL”, and balance will display “SCALE” or “LINE”. Press MODE to toggle between “SCALE”
and “LINE”
•Press “TARE” and balance will display the needed calibration weights. Press MODE to toggle between
weights.
•The factory has completed the linear calibration. This should not be re-done unless the load-cell needs to be
changed or the weight is linearly inaccurate.
4.5 Counting Function
1. The balance will count pieces based on the weight of a reference sample: 5, 10, 20, 30, 40, or 50 pieces.
2. Press “COUNT”, the balance will display “CON pcs.”.
3. If you plan to use a container to hold the pieces during the count, place the empty container on the platform,
then press “TARE”. If not, just press “TARE”. The balance displays “pc ADD 5”.
4. Press the “MODE” button to toggle between ADD 5, 10, 20, 30, 40, or 50 pieces. Select the
appropriate weighing sample for your application. IMPORTANT: The larger the sample, the less
error there will be when counting.
5. Press “TARE” to activate the reference count.
6. Remove the sample weight.
7. The balance is ready to count. Add pieces to the balance/container as desired and read the quantity on the
display.
NOTE:
•Once you are ready to count, this reference sample will stay recorded in the balance even if the balance is
turned off.
•If you want to count parts of another weight, repeat the steps above in order to establish the new reference
count..
•If “PC Err” is displayed, this means the sample is too light to provide accurate results within the error range
set by the balance.
•Press “UNIT”to switch between parts counting and weighing.
4.6 Unit Selection
Press “UNIT” to switch between g, oz, ozt, dwt, lb, ct and pcs.
4.7 Back-light Function
Press “MODE” to turn the back-light on or off.
4.8 RS232C Communication (ASCII)
4.8.1 Baud rate =9600
4.8.2 Data form output by KHA series electronic balances
+ (-) XXX. XX UNIT< CR>

4.8.3 Wiring method
Computer Balance
1 Empty 1
2 RXD 2 RXD
3 TXD 3 TXD
4 4
5 Ground 5 Ground
6 6
7 7
8 8
9 Empty 9
4.8.4 Demonstrating communication software (BASIC)
10 CLS
20 OPEN “COM2: 9600, N, 8, 1” FOR RANDOM A$ 1#
30 Z$=INKEY $
40 INPUT #1,A$
50 PRINT A$
60 INPUT #1, A$
70 PRINT A$
80 I=I+1
90 IF I<10 THEN GOTO 60
100 PRINT “TIME=”; I
110 END
5. Care and maintenance
•To keep the balance operating properly, the housing and platform should be kept clean and free from foreign
material. If necessary, a cloth dampened with a mild detergent may be used. Keep calibration weights in a
safe dry place.
•Unplug the AC Adapter when not in use. For long term storage, remove the batteries.
6. Error Codes
The following list describes the various errors which may appear on the display and the suggested remedy.
Display description
•Err 0 With the platform on, this signal indicates the platform is too light. If this error still occurs, the sensor
or the circuit board may be faulty/damaged. The balance must be sent to the manufacturer to be serviced.
•Err 1 The sample being weighed exceeds the capacity of the balance. If the error occurs when the sample is
within the balance capacity, the balance may not be correctly calibrated. Re-calibrate the balance.
•Err 2 This indicates, when turning the balance on, that there is no platform on the balance or the platform is
too light. Please put the platform on before turning on the balance or calibrate the balance once again.
•Err 3 This indicates there was weight on the platform when turned on. Remove the weight from the platform
before turning on the balance.
7. Troubleshooting
SYMPTOM
PROBABLE CAUSE
REMEDY
No Display Power Adapter not connected.
Batteries are dead. Connect power Adapter. Replace batteries
Low Battery Indicator Batteries are weak Replace batteries
Incorrect Weight
Reading Balance was not set to zero. Balance has not been
correctly calibrated.
With no load on the platform,
press “TARE”. Then weighing
can be done.
Recalibrate the balance.

Calibration Procedure
does not work Incorrect weights being used Use correct weights.
8. Warranty
This product is warranted against manufacturer defect but not for damages caused by abuse. The warrantee is to
the original end user and is not transferable. Call your original scale dealer.
This warrantee does not cover damage, mal function or breakdown due to mal-operation, erosion from corrosive or
radioactive substances, penetration of foreign matter, damage of load-cell and battery, breakdown resulting from
improper maintenance or any modification, or attempt to repair by unauthorized personnel.
9.Specifications
MODEL KHA 200 KHA 500 KHA 1000 KHA 201 KHA 501 KHA 1201 KHA 2401 KHA 5001
Weighing capacity and
readability (g)
200×0.01 500×0.01 1000×0.01 200×0.1 600×0.1 1200×0.1 2400×0.1 5000×0.1
Standard deviation (e)
11111111
Linearity (e)
+1
Corner deviation (e)
+1
Minimum capacity (g)
0.01 0.01 0.01 0.1 0.1 0.1 0.1 0.1
Taring range
0-200g 0-500g 0-1000g 0-200g 0-600g 0-1200g 0-2400g 0-5000g
Overload capacity Maximum capacity +9e
Time of stabilizing (s) 3
Applicable temperature
range
10-35℃
Power source
AC adapter (supplied with balance); or 4AA Batteries (not included)
Pan size (mm) φ120
Housing dimension (mm) 251 (L) ×172 (W) ×58 (H)
Net weight 1.05kg