OHAUS SD35 User manual

SD SERIES BENCH SCALE EN-1
Ohaus SD Series Bench Scale
INSTRUCTION MANUAL
• The contents of this manual applies to all models of the SD Series Bench
Scale.
• Calibration weights are not provided with this product.
• For best results, use the product within the specified operating temperature
range.
• For best accuracy, perform your measurements in a clean environment, free
of electrostatic and magnetic fields, dust and dirt, moisture, vibration and air
currents.
• Use your SD Series Bench Scale with care, gently loading items to be weighed
on the center of the platform. Avoiding rough treatment will aid in extending
the life of your Scale.
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EN-2 SD SERIES BENCH SCALE
Introduction
This manual covers operation for the Ohaus SD Series Bench Scales.
Unpacking
SD Series Bench Scale is shipped with the following components:
• Indicator • AC Power Adapter
• Scale Base • This Instruction Manual
• Mounting Brackets • Warranty Card
Leveling Scale Platform
The Scale Base should be placed on a level, stable surface before operation.
Models SD75L and SD200L are equipped with adjustable leveling feet. Adjust the
four leveling feet under the platform to level it.
Power Options
AC Adapter Operation
• The AC Adapter (included) may be used to power the system when battery
power is not available.
• Check that the AC input power as marked on the Adapter matches the
available power source.
• Connect the round plug of the AC Adapter to the power input jack at the side of
the Indicator housing. See Figure 1.
• Plug the AC Adapter into an AC power outlet.
Figure 1. Connecting Adapter Plug to Indicator.
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SD SERIES BENCH SCALE EN-3
Battery Installation (Optional)
• Open the battery cover on the bottom of the Indicator and install three “C”
size (LR14) alkaline batteries into the compartment. Orient the batteries as
shown on the inside cover. Close the battery cover.
NOTE: Batteries are not included.
Figure 2. Battery Installation.
CAUTION: Do not dispose of used batteries in domestic waste. Follow
the proper disposal or recycling requirements in accordance with local
laws and regulations.
Indicator Mounting and Placement Options
• Table Top Placement:
The Indicator may be placed on a flat table surface without additional
hardware. Four rubber feet provide reduced slippage on most surfaces.
• Direct Wall Mounting:
The Indicator may be mounted directly to a wall using two screws (not
included). Select appropriate size screws that fit into the holes at the bottom
of the Indicator housing. See Figure 3. When mounting to a wall without a
solid backing, use appropriate anchoring hardware.
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EN-4 SD SERIES BENCH SCALE
Figure 3. Direct Wall Mount Arrangement.
• Bracket Wall Mounting/Table Mounting:
Attach the two mounting brackets as shown in Figure 4. Position the
Indicator where desired on the wall or table. Install 2 screws (not supplied)
into the ends of each bracket to secure them to the surface. When mounting
to a wall without solid backing, use appropriate anchoring hardware.
MOUNTING NOTES:
1. When attaching brackets: Insert round pins into holes at bottom of
Indicator, slide each bracket back to lock in place.
2. Mounting brackets may be attached in two different orientations to provide
optimum viewing angle.
3. Some mounting positions may require that the brackets be attached to the
work surface before being attached to the indicator.
Figure 4. Bracket Wall & Table Mount Arrangements.
120mm / 4.72”
120mm / 4.72”
90mm / 3.54”
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SD SERIES BENCH SCALE EN-5
Product Features & Operation
Figure 5. Indicator Panel Controls.
Two Button Keypad
• ON/ZERO Off :A short press turns on the scale when it is off. When the scale
is on, a short press zeroes the scale, and a long press turns the scale off.
• UNITS Cal :A short press changes the weighing unit and weighing mode.
A short press initiates countdown during Dynamic Weighing Mode.
A long press initiates the calibration process.
Display Window
• Large 7-Segment Numeric Characters: Weight (mass) values are
shown using 4 digits including negative sign and decimal places. Prompts
for calibration and possible error conditions are also shown using these
digits.
• Stable Reading Indication: A *will appear in the lower left corner of
the display to indicate when the reading is stable.
• Weighing Unit Indication:The weighing unit selected appears on the
right side of the display.
• Dynamic Weighing Mode Indication:A • will flash next to the
selected unit during this mode.
SD
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EN-6 SD SERIES BENCH SCALE
• Low Battery Indication:The battery symbol on the left side of the
display indicates a low battery condition. When first displayed ,
approximately 12 hours of operation remain. When the battery is fully
depleted, the scale will momentarily display “Lo bAt” and shut off.
Operation
• Power Up Test:When the ON/ZERO Off button is pressed, the scale
is turned on, all display segments will appear for a short time, followed by
the software version. The display will then reset to zero.
• Zero Function: By pressing the ON/ZERO Off button, the scale display
returns to zero. When adding additional mass, the ON/ZERO Off button
may be used repeatedly until the full capacity of the scale is reached.
When a container is used, the ON/ZERO Off button may be used to
simulate a Tare function. Additional mass may then be added as a NET
weight. When removing both the sample and container from the scale, a
negative value may be displayed. Zero the scale again before subsequent
usage.
NOTE: The ON/ZERO Off button will perform a true zero setting function when
displayed values are within +2% of full capacity. Above 2%, the range is
limited to full capacity by subtraction.
• Negative Values:When a load is removed from the scale, any previously
zeroed value will be displayed as a negative number. To return to normal
operation, the negative value is cleared from the display by pressing the
ON/ZERO Off button .
• Overload:If the applied load exceeds the capacity of the scale, an “E” is
displayed. Remove the load and the scale will return to normal operation.
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SD SERIES BENCH SCALE EN-7
• Auto Shut-Off: To extend battery life, the scale will automatically turn off
after approximately four minutes of inactivity. This feature is only active
during battery operation.
Dynamic Weighing
1. With platform empty, press the UNITS Cal button until the
indicator • flashes next to the desired measuring unit.
2. Place a mass on the platform. The scale will show “-A-”.
NOTE: If using a container, press ON/ZERO Off to tare the
weight and return to zero.
3. With a mass on the platform or container, a short press of
UNITS Cal will start the averaging countdown from
5 seconds.
4. The averaged weight is then displayed. The indicator •
stops flashing when the process is complete.
5. The display will hold until a button is pressed.
6. To repeat the process press UNITS Cal with a mass on the
platform or container.
7. To Exit, remove the mass from the platform or container and
press UNITS Cal.
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EN-8 SD SERIES BENCH SCALE
Calibration
For best results, calibrate the scale at regular intervals. (Calibration weights are not
supplied with the scale.)
CAUTION
USE EXTREME CARE WHEN HANDLING CALIBRATION WEIGHTS
AS THEY ARE VERY HEAVY. IMPROPER LIFTING METHODS OR
MISUSE OF CALIBRATION WEIGHTS MAY RESULT IN PERSONAL
INJURY. MULTIPLE WEIGHTS MAY BE USED TO EQUAL THE
REQUIRED CALIBRATION WEIGHT.
1. Allow the scale to warm up and stabilize for a least two minutes before
commencing the calibration procedure.
2. To select the weighing unit to be used for calibration, press the UNITS Cal
button until the correct unit is displayed.
NOTE: The calibration process can be stopped at any time by pressing the
UNITS Cal button or by turning the scale off. The correct span calibration
weights will need to be available before starting the calibration (see
specification table). Calibration is unavailable in Dynamic Weighing Mode.
3. Press and hold the UNITS Cal button until “CAL” is displayed.
4. With the platform empty, press the ON/ZERO Off button to
capture the scale zero. The display will show “-C-”
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SD SERIES BENCH SCALE EN-9
5. After the zero is captured, the required span calibration
weight in the selected unit is displayed.
6. Place the calibration weight on the platform and press
ON/ZERO Off button. The display will again show “-C-”.
7. After span capture, the display will return to the normal
weighing mode.
NOTE: The message “CAL E” will appear if an incorrect calibration weight
was applied. Repeat the procedure using the correct calibration weight.
Calibration Locking: By use of an internal switch, the calibration function may be
locked (disabled), and unauthorized recalibration prevented.
1. With the scale powered off, remove the back housing section of the indicator
by unscrewing the four screws at the bottom.
2. Slide the switch on the PCB (marked SW3) to the position marked “CAL LOCK”.
3. Reassemble the housing.
4. If required, place tamper evident sealing labels over the screw holes or over
the housing edges.
If later recalibration is required, the housing will need to be reopened and the lock
switch returned to the original position.
NOTE: When the lock switch is set to the CAL LOCK position, the power-on zero
range is reduced to 10% of full capacity.
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EN-10 SD SERIES BENCH SCALE
Model SD35 SD75 SD200
Capacity x Readability 35 x 0.02kg
77 x 0.05lb
75 x 0.05kg
165 x 0.1lb
200 x 0.1kg
440 x 0.2lb
Weighing Units kg, lb
Modes Simple Weighing, Dynamic Weighing
Calibration Weights 25kg/50lb 50kg/100lb 100kg/200lb
Stabilization Time Within 3 seconds
Zero Range To capacity by subtraction
Maximum Overload 150%
Error Indications: “E”
“CALE”
“UnSt”
“ErrE”
“Lo bat OFF”
“Lo Line OFF”
- Over load, Under load, Power on Over/Under load
- Calibration Error
- Unstable at Power on
- Memory Error
- Low battery shut down
- Low line voltage shut down (Power Adapter)
Underload Indication Negative value
Auto Shut-Off 4 minutes no activity (battery operation only)
Battery Operating Time 360 hours
Operating Temperature
Range
41° to 104° F / 5° to 40°C at 10% to 80% relative humidity,
non-condensing
Cable Length 1.8m / 72” (uncoiled)
Display 4 Digit, LCD, 0.8”/20mm high
Scale Base Size 316mm L x 280mm W x 45mm H /
12.4” x L x 11” W x 1.77” H
Indicator Size 210mm L x 91mm W x 39mm H / 8.27” L x 3.58” W x 1.54” H
Battery power requirements 3 “C” Alkaline batteries (LR14)
AC Adapter 9-12 Volt DC, 100mA
Net Weight 2.6kg / 5.8lb 3.3kg / 7.3lb
Shipping Weight 3.7kg / 8.1lb 4.3kg / 9.5lb
Shipping Carton Size
380mm L x 100mm W x 465mm H / 15” L x 3.94” W x 18.3” H
Specifications (Standard Base Models)
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