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When Accuracy Counts
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74162

DS-671 SERIES OPERATING MANUAL
INDEX
SECTION PAGE
NUMBER
1.0 GENERAL 2-3
1.1. Features 2
1.2. Warranty 2
1.3. Keyboard & Display Layout 3
1.4. Key Switch Information 3
1.5. Indicator Lamp Information 3
2.0 SPECIFICATIONS 4
2.1. Technical Specifications 4
Appearance
2.2.
3.0 INSTALLATION 6
3.1. Un-packing 6
3.2. Inspection 6
3.3. Re-packing 6
5
4.0 DS-671 OPERATIONAL PROCEDURES 7-8
4.1. Power On/Off 7
4.2. Automatic Shut Off 7
4.3. Re-zero 8
4.4. Tare Reduction 8
5.0 MAINTENANCE MODE 9-12
5.1. Spec Entry 9
5.2. Spec Entry and Span Adjustment 10
5.3. Internal Count and A/D Count Display 10
5.4. Spec List 11
5.5. Error Messages 12
5.6. Maintenance, Calibration, Test Procedures & Service 12
Warranty 13
1

1.0. GENERAL
1.1. Features
• Wipe down digital weighing scale
• Quick response to weight changes
• Capacity: 100 oz, 200 oz, 600 oz., 1.5 lb, 3 lb, 6 lb, 15 lb, 30 lb, 60 lb
• Resolution:
A. Display resolution1/1000 (multi range) internal res. 1/6000
B. Display resolution1/3000 (single range) internal res. 1/24000
• Low power consumption: 6 x C cell batteries for more than 200 hours of
continuous use
• Fast self test procedure when power on
• Selectable automatic shut off time that prolongs battery life
• Two point low battery detect:
A. When battery is weak, the battery indicator will light
B. When the power from the battery becomes too low to weigh accurately, all displays
will shut off except the battery indicator. The power is shut off after 1 minute.
• Calibration by software
• High contrast LCD display
• 3 keys REZERO key, TARE key, ON/OFF key
• Stainless steel platform and indicator housing
2

1.3. Keyboard & Display Panel Layout
1.4. Key Functions
• REZERO Key Reset weight display to zero
• TARE Key Set or clear a tare
• ON/OFF Key Turn the power ON or OFF
1.5. Indicators Lamps
• Zero On when zero point is adjusted and when weight is stable
• Net On when tare reduction is performed
• Battery On when battery is weak
3

2.0. SPECIFICATIONS
2.1.1. Technical Specifications
This section includes a detailed listing of all pertinent specifications and parameters for the DS671 weighing scales. The system weighing accuracy is 0.03 %. All models meet or exceed the
requirements of OIML, Class III, and NIST Handbook, Number 44.
2.1.2. Operating conditions
• Power source 12VDC w/DC adapter or 9VDC w/6 “C” cell battery
• Operating temperature -10° C ≈ +40° C (OIML)
• Operating humidity 15 – 85% RH
• Power consumption 0.07w when 6V, 0.1w when 9V
2.1.3. Analog specification
• Input sensitivity 0.67mV/V- 10kg & 20kg, all other capacities 1mV/V
• Zero adjust range 40% Full Scale
• Zero balance range 10% Full Scale
• L/C applied voltage DC 5V
• Speed of A/D conversion 4 times /sec.
• Internal resolution 16000 or 24000
2.1.4. Display Specification
• Weight display 6 digits with ZERO, TARE, LOW BATTERY indication
• Spec Display 6 digits
• Decimal Point Spec Selectable
2.1.5. Dimensions
• Platter size 8 _ "L x 8 _ "W
• Overall size 11"L x 9 _ "W x 6 _"H
2.1.6. External connectors
• DC receptacle
4