Datasheet Content
DS-220R
3G-CBM-01084
Digital Charging Scale
User’s Guide
DS-220R User’s Guide
Introduction
Thank you for your purchase of the AccuTools DS-220R Digital Charging Scale.
The DS-220R is the most accurate and precise refrigerant meter available today
with features that cannot be found anywhere else. It is ideal for HVAC and
Refrigeration service, including Critical Charging of small refrigeration systems.
With the DS-220R, you can measure weight in both metric and english units. The
DS-220R is programmable, and has a built in alarm to indicate a programmed
threshold has been exceeded. Attaching the DS-220R to the CM-500 (optional,
extra) allows automatic refrigerant charging for A/C systems.
Features
• Large, high-visibility LCD display
• Measures Weight in kgs and lbs
• Built-in memory remembers all previous settings
• Refrigerant Tank Capacity Indicator
• Rugged, Compact Design
• Long Battery Life
• High Accuracy and Resolution
• Programmable
• Can be calibrated in the field with inexpensive reference weights
• Expandable with CM-500 (not included)
Specifications
Capacity 100 kilograms (220 Pounds)
Accuracy 0.5% of Reading +/- 1 Least Significant Digit
Resolution 2g, 0.005 lbs., 0.1 oz.
Power 4 x 1.5V ‘AAA’ Alkaline Batteries (6 VDC)
Battery Life 30 hours continuous use
Operating Temperature 0°C – 60°C (32°F – 140°F)
Weight 2.5 kg (5.5 lbs.)
Dimensions 26.7 cm x 26.7 cm x 4.5 cm (10.5” x 10.5” x 1.75”)
NOTE: To prevent damage, never exceed the rated capacity of the DS-220R.
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DS-220R User’s Guide
Parts Diagram
LCD Display
Easel
(Extended)
Keypad
Coiled
Cord
Storage
Dock Easel
(Retracted)
Weighing
Platform Mounting
Hooks
Speaker
Grill
Optical Port
for CM-500
Battery
Cover
Control Box Rear View
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DS-220R User’s Guide
LCD Display
A B
C
E
D
F
G
H
I J K L M N O P
Item Function
A Main Numeric Display
B Alternate Numeric Display
C Tank Capacity Percent Indication
D Units Indicators
E Sound Mute Indicator
“Floating” Negative Indicator (Indicates weight removed from
F
platform)
G Battery Level Indicator
H Fast Adjustment Indicator
I Set Mode Indicator
J Tank Capacity Mode Indicator
K Run Mode Indicator
L Hold Mode Indicator
M Program Complete Indicator
N Calibration Mode Indicator
O Valve Open/Closed Indicator for use with CM-500
P Resolution Indicator
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DS-220R User’s Guide
Keypad
Press for power-on, press/hold for power off.
Press to cycle through displayed units.
Press to select low, medium, or high display resolution.
Press to “zero-out” current reading on display.
. Use to adjust various settings and programming values.
For faster adjustments. Used in conjunction with and .
“Freezes” display.
Starts programming mode
Activates/Deactivates stored program.
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DS-220R User’s Guide
Quick Start
To operate the DS-220R as a basic weigh scale, perform the following steps:
Setup
1. Unpack the scale as described in the “Unpacking the DS-220R” section below.
2. Install the batteries into the control box as described in the “Battery Installation”
section below.
3. Place the Weighing Platform on a firm, level surface.
4. Turn the DS-220R on by pressing .
5. Select the proper measurement units by repeated pressing . The units will
cycle as follows:
kilograms è pounds è pounds and ounces è ounces
6. Select the desired display resolution by repeatedly pressing as described in
the RESOLUTION section.
Basic Weighing Operation
1. If using a container to hold the objects being measured, place it empty on the
center of the platform.
2. Press to “zero-out” the scale. The display will read zero.
3. Place the material to measure in the container or on the center of the platform.
4. Read the weight on the display.
5. A positive number indicates the applied weight is greater than the zero value. A
negative number indicates the applied weight is less than the zero value.
6. Repeat steps 1 through 5 as necessary.
7. Turn the DS-220R off by pressing and holding down until the scale turns off.
8. To conserve battery life, the DS-220R will turn itself off after 30 minutes of
inactivity, unless it is currently running a program (see Programming section).
The last state of the DS-220R will be restored upon power-up.
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DS-220R User’s Guide
Unpacking the DS-220R
1. Remove the DS-220R from the carry case.
2. Remove the control box from the storage dock in right side of the weighing
platform by pulling the control box firmly from the dock.
3. Unwrap the coiled cord from around the weighing platform. When using the DS-
220R, ensure the coiled cord does not touch the top of the weighing platform, or
inaccuracies may result.
4. If desired, extend the easel at the top back of the control box by pulling it out.
The easel may be used straight for hanging, or folded at an angle for resting on
a level surface.
Repacking the DS-220R
1. If extended, restore the easel to the retracted position.
2. Wrap the coiled cord counter-clockwise around the weighing platform.
3. Push the control box firmly into the storage dock of the weighing platform until it
snaps in place.
4. Replace the DS-220R into the carry case.
Battery Installation & Replacement
1. Remove the battery cover from the rear of the control box by compressing tab at
the base of the battery cover.
2. If necessary, remove old set of batteries.
3. Insert 4 ‘AAA’. Replace battery cover by aligning tabs and snapping back into
place.
IMPORTANT: TO PREVENT DAMAGE TO THE DS-220R, CAREFULLY
OBSERVE BATTERY POLARITY AS MARKED INSIDE THE BATTERY
COMPARTMENT. DO NOT LEAVE DEAD BATTERIES INSIDE THE CONTROL
BOX. REMOVE BATTERIES IF THE DS-220R IS NOT TO BE USED FOR AN
EXTENDED PERIOD OF TIME.
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DS-220R User’s Guide
Resolution
The resolution (minimum incremental weight) than can be displayed by the DS-
220R can be adjusted to make the display easier to read. Unstable loads or high
winds can cause the display to fluctuate erratically. By reducing the display
resolution, external influences can be minimized. As shipped, the DS-220R is set to
MEDIUM resolution, suitable for most purposes. The resolution can be changed to
LOW, MEDIUM or HIGH by repeated pressing on the keypad. The table 1
illustrates the displayed resolution for each units mode vs. resolution. Regardless of
the resolution setting, the scale operates internally with the highest resolution;
therefore, only the displayed value is affected.
Units
Pounds
&
Resolution Kilograms Pounds Ounces Ounces
0.005
HIGH 2g 0.1 oz. 0.1 oz.
lbs
.0.010
MEDIUM 5g 0.2 oz. 0.2 oz.
lbs.
0.020
LOW 10 g 0.5 oz. 0.5 oz.
lbs.
TABLE 1. Resolution Settings
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DS-220R User’s Guide
Over Range Indication
If the weight applied to the weighing platform exceeds the maximum capacity of the
DS-220R (100 kg), a single “1” will be shown on the left side of the display. To
prevent damage to the DS-220R, immediately remove the weight from the platform.
Hold Mode
A special feature of the DS-220R allows the emptying or replacing bins or
containers used for weighing without affecting the weight shown on the display.
This Hold Mode may be used as follows:
1. Allow load to settle until display is steady.
2. Press . The HOLD indicator will turn on and the current weight is now locked
on the display.
3. Remove, empty, or replace objects, bins, or containers on the platform.
4. Wait 5 seconds for the new load to stabilize.
5. Press . The HOLD indicator will turn off. Measurements will continue from
where they left off prior to initiating Hold Mode.
Programming
With the DS-220R, a programmable threshold weight will sound an alarm. The
alarm will sound when the displayed weight (either positive for increasing weight, or
negative for decreasing weight) equals the programmed weight. To program the
alarm, perform the following steps:
1. Set up the DS-220R with the desired units and resolution as described in the
Quick Start Setup section above.
2. If measuring decreasing weight, place the objects or container with the objects or
material that will be removed on the weighing platform.
3. Press to start the SET Mode, indicated by the SET annunciator on the LCD
display.
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DS-220R User’s Guide
4. Press and/or hold the or keys to set the desired alarm set point. To
change the set point faster, press . This will activate the FAST SET mode
which will change the set point 10x faster than normal. Press again to return
to the normal speed SET mode.
5. Press . The display will automatically change to zero and the RUN indicator
will show to indicate that the program is running.
6. When the applied (or removed) weight exceeds the programmed amount, the
alarm will sound and the DONE indicator will flash on the display.
7. Press any key to stop the alarm.
8. To cancel the RUN mode at any time, press the key.
NOTE: The RUN mode can only be initiated from the SET mode. If you cancel the
RUN mode by pressing , and wish to RUN again, press…
