AccuTools DS-220 User manual

DS
-
220
VersatileDigitalScale
User’s Guide

DS-220 User’s Guide
1
Introduction
Thank you for your purchase of the AccuTools™ DS-220 Versatile Digital Scale. The DS220 is
the most accurate and precise digital scale available today with features that cannot be found
anywhere else.
With the DS-220, you can measure weight or liquid volume in both metric and English units, in
addition to using it as a parts counter. The DS-220 is also programmable, and has a built in
alarm to indicate a programmed threshold has been exceeded. Attaching the DS-220 to the CM-
500 Charging Module (optional, extra) allows automatic refrigerant charging for A/C systems.
Features
•Large, high-visibility back-lit LCD display
•Measures Mass and Liquid Volume in Metric and English Units
•Functions as a Parts Counter
•Built-in memory remembers all previous settings
•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 Charging Module
•Ideal for Refrigerant Charge/Recover, Industrial, Shop, and General Home Use.
Specifications
Capacity 100 kilograms (220 Pounds)
Accuracy 0.5% of Reading +/-1 Least Significant Digit
Resolution 2g, 0.005 lbs., 0.1 oz, 2 ml, 0.001 gal., 0.1 fl. oz.
Specific Gravity Range 0.500 kg/l to 2.000 kg/liter
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-220.

DS-220 User’s Guide
2
Parts Diagram
LCD Display
Easel
(Extended)
Keypad
Weighing
Platform
Coiled
Cord
Mounting
Hooks
Speaker
Grill
Easel
(Retracted)
Optical Port
for CM-500
Battery
Cover
Storage
Dock
Control Box Rear View

DS-220 User’s Guide
3
LCD Display
Item Function
AMeasurement Mode Indicators
BSpecific Gravity Indication (only in Liquid Measurement Mode)
CAlternate Numeric Display (for Specific Gravity or Tank Capacity)
DTank Capacity Percent Indication
EUnits Indicators
FMain Numeric Display
GKey “Beep” Indicator
H“Floating” Negative Indicator (Indicates weight removed from platform)
IBattery Level Indicator
JFast Adjustment Indicator
KSet Mode Indicator
LTank Capacity Mode Indicator
MRun Mode Indicator
NHold Mode Indicator
OProgram Complete Indicator
PCalibration Mode Indicator
QValve Open/Closed Indicator for use with CM-500 Charging Module
RResolution Indicator
A
C
K
J
D
B
H
E
F
I
M
L
N
R
Q
O
P
G

DS-220 User’s Guide
4
Keypad
Press for power-on, press/hold for power off, press/release for backlight.
Press to cycle through weighing modes.
Press to cycle through displayed units.
Press to select low, medium, or high display resolution.
Press to tare (“zero-out”) current reading on display.
.Use to adjust various settings and programming values.
For faster adjustments. Used in conjunction with and .
Starts Count Mode training.
“Freezes” display.
Starts programming mode
Activates/Deactivates stored program.

DS-220 User’s Guide
5
Quick Start
To operate the DS-220 as a basic weigh scale, perform the following steps:
Setup
1. Unpack the scale as described in the “Unpacking the DS-220” 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-220 on by pressing .
5. If desired, turn on the backlight by momentarily pressing .
6. Select the weigh mode by repeatedly pressing . The mode indicators will cycle as
follows:
WEIGHT èVOLUME èVOLUME SPECIFIC GRAVITY èCOUNT.
7. In Weight or Volume mode, select the proper measurement units by repeated pressing .
The units will cycle as follows for each corresponding mode:
WEIGHT:
kilograms èpounds èpounds and ounces èounces
VOLUME (and VOLUME SPECIFIC GRAVITY):
liters ègallons èfluid ounces
8. In Weight or Volume mode, select the desired display resolution by repeatedly pressing
as described in the RESOLUTION section.
9. If in Volume Specific Gravity Mode, adjust the Specific Gravity as described in the
MEASURING VOLUME section.
10. If in Count mode, train the scale as described in the COUNTING section.

DS-220 User’s Guide
6
Basic Operation
1. If using a container to hold the objects or liquids being measured or counted, 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, volume, or number of items 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-220 off by pressing and holding down until the scale turns off.
8. To conserve battery life, the DS-220 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-220 will be
restored upon power-up.
Unpacking the DS-220
1. Remove the DS-220 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-220, 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-220
1. 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-220 into the carry case.

DS-220 User’s Guide
7
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’ Alkaline batteries. Replace battery cover by aligning tabs and snapping back
into place.
IMPORTANT: TO PREVENT DAMAGE TO THE DS-220, CAREFULLY OBSERVE BATTERY
POLARITY AS MARKED INSIDE THE BATTERY COMPARTMENT. DO NOT LEAVE DEAD
BATTERIES INSIDE THE CONTROL BOX. REMOVE BATTERIES IF THE DS-220 IS NOT TO
BE USED FOR AN EXTENDED PERIOD OF TIME.
Resolution
The resolution (minimum incremental weight or volume) that can be displayed by the DS-220 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-220 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.
Table 1 illustrates the displayed resolution for each weight and units mode vs. resolution.
Regardless of the resolution setting, the scale operates internally with the highest resolution;
therefore, only the displayed value is affected.
Mode
Units
Resolution
HIGH
0.002 kg
0.005 lbs.
0.1 oz.
0.1 oz.
0.002 liter
0.001 gal.
0.1 fl. oz.
MED
0.005 kg
0.010 lbs.
0.2 oz.
0.2 oz.
0.005 liter
0.002 gal.
0.2 fl. oz.
LOW
0.010 kg
0.020 lbs.
0.5 oz.
0.5 oz.
0.010 liter
0.005 gal.
0.5 fl. oz.
Weight Volume
Kilograms Pounds Pounds & Ounces Ounces Liters Gallons Fluid Ounces
TABLE 1. Resolution Settings

DS-220 User’s Guide
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Over range Indication
If the weight applied to the weighing platform exceeds the maximum capacity of the DS-220 (100
kg), a single “1” will be shown on the left side of the display. To prevent damage to the DS-220,
immediately remove the weight from the platform.
Measuring Weight
Measuring Weight with the DS-220 is straight forward:
1. Set up the DS-220 as described in the QUICK START Setup section above.
2. Select WEIGHT using .
3. Select the desired units of measure using .
4. Use as necessary, and apply (or remove) weight to be measured.
Measuring Volume
The DS-220 calculates liquid volume based upon the weight of the liquid being measured. In
order for this calculation to be accurate, the specific gravity of the liquid must be known.
Specific Gravity is defined as the ratio of the density of the liquid to the density of water. Pure
water has a specific gravity of 1.000. Other liquids have a specific gravity other than 1.000. Refer
to the appendix for a list of common liquids and their corresponding specific gravities.
There are two modes of Volume measurement. The first mode, when only the VOLUME indicator
shows on the display, assumes a specific gravity of 1.000 (water). In the second mode, when
SPECIFIC GRAVITY, in addition to VOLUME, shows on the display, the specific gravity is
adjustable, allowing accurate volume measurement of any liquid. To measure liquid volume,
perform the following steps:
1. Setup the DS-220 as described in the QUICK START Setup section above.
2. Select VOLUME (if measuring water) or VOLUME SPECIFIC GRAVITY (if measuring other
than water) using .
3. Select the desired units using .
4. If using specific gravity, adjust the specific gravity shown on the ALTERNATE NUMERIC
DISPLAY by pressing and/or holding or . The specific gravity can be set faster by
pressing .
5. Proceed to measure the volume as described in the QUICK START Basic Operation section
above.
NOTE: The range of specific gravity adjustment is from 0.500 to 2.000.

DS-220 User’s Guide
9
Determining Specific Gravity
It is possible to determine the specific gravity of a liquid if you already know its volume. Using a
graduated container appropriate for the liquid in question, perform the following steps:
1. Ensure the DS-220 is in VOLUME SPECIFIC GRAVITY MODE (refer to the Quick Start
section).
2. Place the empty graduated container to the center of the platform.
3. Press to “zero-out” the weight of the container. The display will read zero.
4. Fill the container to the mark indicating the volume of the liquid in the container.
6. Adjust the specific gravity shown on the ALTERNATE NUMERIC DISPLAY by pressing
and/or holding the or until the displayed volume equals the known volume of liquid
in the container. The specific gravity can be changed faster by pressing .
5. Read the specific gravity of the liquid on the ALTERNATE NUMERIC DISPLAY.
NOTE: The accuracy of the Specific Gravity calculation will be dependent upon the volume
measured. Greater volumes will result in better accuracy.
USE CARE WHEN MEASURING LIQUIDS WITH THE DS-220. DO NOT SPILL LIQUIDS
ONTO THE PLATFORM OR CONTROL BOX, AS THIS CAN DAMAGE THE SCALE.
ALWAYS USE EXTREME CARE WHEN HANDLING FLAMMABLE MATERIALS. IN
ADDITION, OBSERVE PRECAUTIONS WHEN HANDLING COROSSIVE OR TOXIC
MATERIALS, INCLUDING HOUSEHOLD OR INDUSTRIAL CHEMICALS. USE PROTECTIVE
CLOTHING, EYEWARE, AND GLOVES AS REQUIRED.