Gravity Measurement CWT7 User And Service Manual

Weighing Scale User and Service Manual

Please read this manual carefully before operation

----Important safety info

----Warranty

Model: CWT7

GRAVITY MEASUREMENT, INC.

CWT7 USER AND SERVICE MANUAL

Revision: 03/2018 Page: 1

Important Safety Information

READ ALL INSTRUCTIONS BEFORE USING SCALES TO ENSURE MAXIMUM
SAFETY, BEST PERFORMANCE, AND TO GAIN KNOWLEDGE OF OUR SCALE,
IT IS ESSENTIAL THAT YOU OR ANY OTHER OPERATOR OF THE SCALE READ
AND UNDERSTAND THE CONTENTS OF THIS MANUAL BEFORE OPERATING

THE DEVICE.

When using an electrical device, basic precautions should always be followed,

including the following:

1. Please use only the original power cord or DC adapter supplied with the scale.

Other cords or adapters may damage the scale.

2. DC adaptor is used to charge the battery, and scale can operate without DC
adaptor.

3. Avoid using long power extension cords – this may cause interference

4. Do not use on surfaces or in areas where vibration, air movement or
temperature change.
Do not place in direct sunlight or near air conditioning vents.

5. Avoid high humidity (greater than 80%) that might cause condensation and
keep away from direct contact with water and other corrosive chemicals.

6. Static may influence the weighing result. To reduce the static, wipe the pan an
d scale with anti‐static wipes.

7. Don’t impact or drop heavy objects on the scale – this may affect accuracy, or
cause damage. Do not stack material on the scale when it is not in use.

8. Battery should be removed if the scale is not used for a long period of time.
Battery should be recharged every 3 months.

9. Place items to be weighed as close to center of the pan as possible

10. Only use fingers to operate the keypad. Do not press with hard or sharp
objects.

CWT7 USER AND SERVICE MANUAL

Revision: 03/2018 Page: 2

Warranty

Gravity Measurement, Inc. (Schenectady, New York) offers one-year limited
warranty (parts and labor) for the components failed due to defects in materials or
workmanship. Warranty starts from the date of delivery.

During the warranty period, should any repairs be necessary, the purchaser must
inform its supplier or Gravity Measurement. The company or its authorized technician
reserves the right to repair or replace the components at any of its workshops
depending on the severity of the problems. However, any freight involved in sending
the faulty units or parts to the service center should be borne by the purchaser.

The warranty will cease to operate if the equipment is not returned in the original
packaging and with correct documentation for a claim to be processed. All claims are
at the sole discretion of Gravity Measurement.

This warranty does not cover equipment where defects or poor performance is due
to misuse, accidental damage, exposure to radioactive or corrosive materials,
negligence, faulty installation, unauthorized modifications or attempted repair or failure
to observe the requirements and recommendations as given in this User Manual.
Additionally, rechargeable batteries (where supplied) are not covered under warranty.

Repairs carried out under the warranty does not extend the warranty period.
Components removed during the warranty repairs become the company property.

CWT7 USER AND SERVICE MANUAL

Revision: 03/2018 Page: 3

What Is Inside Box

AC/DC adaptor (110V)
CWT7 weighing scale, with adhesive film covered platter. Two parts are separated to protect
the load cell during transportation.
Rechargeable battery is installed inside the scale.
Two wire seals. The wire seal is used usually by the inspector of Department of Weight and
Measure or authorized dealer. The wire seal is threaded through a metal rode that protrudes
through the bottom of the device and through a hole in the scale base adjacent to the metal
rode.

Set up the Scale

Place the scale on a stable, level surface out of the way of air currents. The scale must
be level during use. Adjust the feet and use the integrated bubble at the front of the
scale to achieve level. Be sure that scale does not rock back and forth. Ensure no
weight is on the pan when turning on the scale. Scale is operated using the

rechargeable battery or AC adaptor. is used to charge the battery, and scale can

operate without DC adaptor.

LCD Display

Size: 130 mm x 46 mm X 2.8 mm
Font height: 30 mm
Segments: 6 or 7??

CWT7 USER AND SERVICE MANUAL

Revision: 03/2018 Page: 4

Key DESCRIPTION

BASIC FUNCTION OPERATION

Press and hold this key for 2 seconds to turn off the balance.

Press this key to turn on the balance

UNITS To select the desired weight unit.
ESC To exit from setup mode.

ZERO To reset the weight to “0”, but the display value has to be

lesser than ± 2% of maximum capacity.

To move one space to the left or downward in setup mode.

TARE To subtract the container´s weight.

To move one space to the right or upward in setup mode.

N/G To view gross or net weight when the balance is on tare status.

All other keys will be disabled when gross weight is activated.

To increase value in setup mode.

PRINT Manually transmitting data through RS232 to print.

Confirmation in setup mode.

CWT7 USER AND SERVICE MANUAL

Revision: 03/2018 Page: 5

BASIC PARAMETER SETTING

To access to functions setting, press the and key at the same time in
weighing mode, and LCD displays U F - 1 . Press key to rotate UF - 1 to U F - 9

“*” This flag indicates that the function is locked when “Approval Version”.

UF- 1 A/D count

1. Press the key to view the A/D count.

2. Press the key to view the the battery voltage or press the key to exit

back to menu UF-1

3. To move to next parameter press the key.

4. To exit and return to normal weighing press the key.

UF- 2 High / Low limits setting

1. Press the key to enter.

2. The display will show 00.0 0 0 L (set low limit).

3. Use the keys and to move cursor and press the to select
number.

4. Press the key to confirm.

5. The display will show 00.0 0 0 H (set high limit).

6. Use the keys and to move cursor and press the to select number.

7. Press the key to confirm.

8. The display will show o .000 ,look at the remarks below.

9. Use the keys and to move cursor and press the to select number.

10. Press the key to confirm.

Remarks: 0 0 0

A B C
A --- Buzzer on: 0= Stable not required 1= Stable required
B –- LCD indicator and RELAY on: 0= Stable not required 1= Stable required
C : Buzzer beeps when: 0= Buzzer off 1= OK 2= LO and HI

 Low limit set as 0 will clear all check weigh values.
 This function is locked when UF-5 is set as “HoLD 1”