Ohaus D12RQR, D25RQR, D50RQR, D12RTR, D25RTR User Manual
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Defender Series Base
Instruction Manual
Defender Series Base EN-1
INTRODUCTION
This manual covers installation, and maintenance instructions for the OHAUS Defender
TM
Series Base. Please
read this manual completely before installation and operation.
SAFETY PRECAUTIONS
For safe and dependable operation of this product, please comply with the following precautions:
Operate the base only under ambient conditions specified in these instructions
Ensure that the load cell cable does not pose an obstruction or tripping hazard
Do not operate the base in hazardous environments or unstable locations
Do not drop loads on the base
Do not lift the base by the top frame; always lift from the bottom frame when moving the
base
Service should only be performed by authorized personnel
INSTALLATION
Unpacking
Unpack and inspect the product to make sure that all components have been included. The package includes the
following:
• Defender
TM
Series Base • Weighing Pan • Instruction Manual
When purchased as a complete Defender Series Scale, the package will also include:
• Indicator • Column Assembly
ASSEMBLY
Weighing Pan
Remove the shipping spacers, and place the weighing pan securely over the rubber load pads on the top frame of
the base.
Note: Not included with some models
Wiring Connections
When connecting the base to an OHAUS indicator equipped with the matching circular connector, push the base
connector onto the indicator connector and turn the locking ring clockwise to lock it in place.
When connecting the base to an indicator that does not have the matching connector, install the optional load cell
cable adapter (P/N 30429931sold separately) to the indicator using the wiring codes in Table 1. Then attach the
load cell cable to the cable adapter.
Note: As an alternate wiring method, cut off the connector, strip the wires and attach them to the indicator using
the wiring codes in Table 1.
EN-2 Defender Series Base
The extension cable accessory (P/N: 30429931) cannot be used if the scale will be used in a legal for trade or
legally controlled application, because there is no provision to seal the connection between the indicator and
platform.
TABLE 1. LOAD CELL CONNECTION
Type1. DxxxWxx Bases
FUNCTION
WIRE COLOR
+ Excitation
Green
- Excitation
Black
+ Signal
Red
- Signal
White
+ Sense
Blue
- Sense
Brown
Shield
Yellow
Type2. DxxxRxx Bases
FUNCTION
WIRE COLOR
+ Excitation
Green
- Excitation
Black
+ Signal
White
- Signal
Red
+ Sense
Blue
- Sense
Brown
Shield
Yellow
Selecting the Location
To ensure accuracy, proper performance and safety, locate and operate the base on a stable, level surface. Avoid
locations with rapid temperature changes or excessive dust, air currents, vibrations, electromagnetic fields or heat.
Level the base by adjusting the four leveling feet until the bubble in the level indicator is centered. A wrench may
be needed to loosen the locking nut above each leveling foot. When the base is level, retighten the locking nuts up
against the base to lock each foot into place.
Note: Ensure that the base is level each time its location is changed.
CORRECT INCORRECT
MAINTENANCE
Cleaning
The base components should be kept clean and free of excessive material build up.
A damp cloth with water and a mild detergent may be used to wipe clean the external surfaces – do not
use acids, alkalis, strong solvents or abrasive materials.
To maintain surface integrity, do not allow debris to remain on the surface of the painted or stainless steel base
frame.
Remove the pan and use fresh water to clean the base frame surface of any debris. Dry the base with a
clean cloth or allow to air dry before replacing the pan. Repeat daily for best care.
Defender Series Base EN-3
Troubleshooting
Aside from installing components and leveling adjustments, the Defender Series Base does not require any other
adjustments as shipped from the factory.
Operational difficulties that may be encountered can often be traced to simple causes such as:
Loose or incorrect wiring connections
Failure to remove the shipping spacers
Obstructions to the base frame
Unstable environments
Incorrect calibration or setup of the indicator
If the troubleshooting section does not resolve or describe your problem, contact your authorized OHAUS service
agent. For service assistance or technical support in the United States call toll-free 1-800-526-0659 between 8:00
AM and 5:00 PM EST. An OHAUS product service specialist will be available to provide assistance. Outside the
USA, please visit our web site, www.ohaus.com to locate the OHAUS office nearest you.
TECHNICAL DATA
Technical Specifications
The technical data is valid under the following ambient conditions:
Ambient temperature: -10ºC to +40 ºC (14 °F to 104 °F)
Relative humidity: 10% to 90% relative humidity, non-condensing
Altitude: Up to 2,000m
Operability is assured at ambient temperature -10ºC to +40 ºC (14 °F to 104 °F)
Note: Not all models may be available in your area. Check with your local OHAUS representative.
TABLE 2.1 SPECIFICATIONS
MODEL
D12RQR
D25RQR
D50RQR
D12RTR
D25RTR
D50RTR
D50RQL
D125RQL
Capacity
25 lb /
12.5 kg
50 lb /
25 kg
100 lb /
50 kg
25 lb /
12.5 kg
50 lb /
25 kg
100 lb /
50 kg
100 lb /
50 kg
250 lb /
125 kg
Approved Resolution
NTEP and Measurement Canada 5000e
Safe Overload Capacity
150% of capacity
Pan Dimensions
305 x 305 mm
12 x 12 in
305 x 355 mm
12 x 14 in
457 x 457 mm
18 x 18 in
Base Construction
Stainless Steel platform with painted steel frame and rubber leveling feet
Load Cell Capacity
22 kg
50 kg
100 kg
22 kg
50 kg
100 kg
100 kg
200 kg
Load Cell Cable
2 m L x 6-wire
Load Cell Type
350 Ohm, aluminum, single point
Load Cell Excitation
5-15V DC/AC
Load Cell Rated Output
2mV/V
Load Cell Protection
IP67
Net Weight
6.kg / 13.2 lb
7 kg / 15.4 lb
11.5 kg / 25.4 lb
Shipping Weight
7 kg / 15.4 lb
8 kg / 17.6 lb
13.5 kg / 29.8 lb
EN-4 Defender Series Base
TABLE 2.2 SPECIFICATIONS
MODEL
D50RTX
D125RTX
D250RTX
D50RQV
D125RQV
D250RQV
D500RQV
D125RTV
D250RTV
D500RTV
Capacity
100 lb /
50kg
250 lb /
125 kg
500 lb /
250 kg
100 lb /
50 kg
250 lb /
125 kg
500 lb /
250 kg
1000 lb /
500 kg
250 lb /
125 kg
500 lb /
250 kg
1000 lb /
500 kg
Approved
Resolution
NTEP and Measurement Canada 5000e
Safe
Overload
Capacity
150% of capacity
Pan
Dimensions
457 x 610 mm
18 x 24 in
610 x 610 mm
24 x 24 in
600 x 800 mm
24 x 31.5 in
Base
Constructio
n
Stainless Steel platform with painted steel frame and rubber leveling feet
Load Cell
Capacity
100 kg
250 kg
500 kg
100 kg
250 kg
500 kg
750 kg
250 kg
500 kg
750 kg
Load Cell
Cable
2 m L x 6-wire
Load Cell
Type
350 Ohm, aluminum, single point
Load Cell
Excitation
5-15V DC/AC
Load Cell
Rated
Output
2mV/V
Load Cell
Protection
IP67
Net Weight
21.5 kg / 47.4 lb
31 kg / 68.3 lb
39.2 kg / 86.4 lb
Shipping
Weight
24 kg / 52.9 lb
34 kg / 75.0 lb
42.7 kg / 94.1 lb
TABLE 2.3 SPECIFICATIONS
MODEL
D2WQS
D5WQS
D12WQS
D12WQR
D25WQR
D50WQR
D25WQL
D50WQL
D125WQL
Capacity
5 lb /
2.5 kg
10 lb /
5 kg
25 lb /
12.5 kg
25 lb /
12.5 kg
50 lb /
25 kg
100 lb /
50 kg
50 lb /
25 kg
100 lb /
50 kg
250 lb /
125 kg
Approved Resolution
NTEP and Measurement Canada 5000e
Safe Overload
Capacity
150% of capacity
Pan Dimensions
254 x 254 mm
10 x 10 mm
305 x 305 mm
12 x 12 in
457 x 457 mm
18 x 18 in
Base Construction
Stainless Steel platform with stainless steel frame and rubber leveling feet
Load Cell Capacity
6 kg
10 kg
30 kg
30 kg
50 kg
100 kg
50 kg
100 kg
200 kg
Load Cell Cable
1 m L x 4-wire
2 m L x 6-wire
2.5 m L x 6-wire
Load Cell Type
350 Ohm, stainless steel, single point
Load Cell Excitation
5-15V DC/AC
Load Cell Rated
Output
2mV/V
Load Cell Protection
IP67
Net Weight
4.5 kg / 9.9 lb
6 kg / 13.2 lb
12.5 kg / 27.6 lb
Shipping Weight
6 kg / 13.2 lb
7 kg / 15.4 lb
14 kg / 30.9 lb
Defender Series Base EN-5
TABLE 2.4 SPECIFICATIONS
MODEL
D50WTX
D125WTX
D250WTX
D50WQV
D125WQV
D250WQV
D500WQV
Capacity
100 lb /
50 kg
250 lb /
125 kg
500 lb /
250 kg
100 lb /
50 kg
250 lb /
125 kg
500 lb /
250 kg
1000 lb /
500 kg
Approved Resolution
NTEP and Measurement Canada 5000e
Safe Overload Capacity
150% of capacity
Pan Dimensions
457 x 610 mm
18 x 24 in
610 x 610 mm
24 x 24 in
Base Construction
Stainless Steel platform with stainless steel frame and rubber leveling feet
Load Cell Capacity
150 kg
300 kg
500 kg
150 kg
300 kg
500 kg
750 kg
Load Cell Cable
2 m L x 6-
wire
2.5 m L x 6-wire
2 m L x 6-
wire
2.5 m L x 6-wire
Load Cell Type
350 Ohm, stainless steel, single point
Load Cell Excitation
5-15V DC/AC
Load Cell Rated Output
2mV/V
Load Cell Protection
IP67
Net Weight
24 kg / 52.9 lb
31.5 kg / 69.4 lb
Shipping Weight
26 kg / 573 lb
35.5 kg / 78.3 lb
Drawings
Figure 1. Defender Base Dimension Drawing.
TABLE 3. DIMENSIONS
Base
A B D
C
Pan Depth
Pan Width
Height of Pan
Height of Pan to
Surface of Table
DxxxWQS
254 mm / 10.0 in
254 mm /
32 mm / 1.3 in
74 mm / 2.9 in
DxxxRQR
DxxxWQR
305 mm / 12.0 in
305 mm / 12.0 in
52 mm / 2.1 in
95 mm / 3.7 in
DxxxRTR
305 mm / 12.0 in
355 mm / 14.0 in
52 mm / 2.1 in
99 mm / 3.9 in
DxxxRQL
DxxxWQL
457 mm / 18.0 in
457 mm / 18.0 in
65 mm / 2.6 in
110 mm / 4.3 in
DxxxRTX
DxxxWTX
457 mm / 18.0 in
610 mm / 24.0 in
80 mm / 3.2 in
130 mm / 5.1 in
DxxxRQV
DxxxWQV
610 mm / 24.0 in
610 mm / 24.0 in
82 mm / 3.2 in
130 mm / 5.1 in
DxxxRTV
600 mm / 23.6 in
800 mm / 31.5 in
90 mm / 3.5 in
132 mm / 5.2 in
*For leveling purposes, the feet may be extended up to an additional 15 mm.
EN-6 Defender Series Base
COMPLIANCE
This product complies with the applicable harmonized standards of EU Directive 2011/65/EU
(RoHS).
The EU Declaration of Conformity is available online at www.ohaus.com/ce
Disposal
In conformance with the European Directive 2012/19/EU on Waste Electrical and Electronic
Equipment (WEEE) this device may not be disposed of in domestic waste. This also applies to
countries outside the EU, per their specific requirements.
Please dispose of this product in accordance with local regulations at the collecting point specified for
electrical and electronic equipment.
If you have any questions, please contact the responsible authority or the distributor from which you
purchased this device.
Should this device be passed on to other parties (for private or professional use), the content of this
regulation must also be related.
For disposal instructions in Europe, refer to www.ohaus.com//weee.
Thank you for your contribution to environmental protection.
ISO 9001 Registration
In 1994, OHAUS Corporation, USA, was awarded a certificate of registration to ISO 9001 by Bureau Veritus
Quality International (BVQI), confirming that the OHAUS quality management system is compliant with the ISO
9001 standard’s requirements.
On May 21, 2009, OHAUS Corporation, USA, was re-registered to the ISO 9001:2008 standard.
ACCESSORIES
TABLE 4. ACCESSORIES
Part Number
Description
30424024
Base Mount Kit, stainless steel
30424410
Column Kit, 35 cm painted steel
30424411
Column Kit, 68 cm painted steel
30424412
Column Kit, 98 cm painted steel
30424413
Column Kit, 35 cm stainless steel
30424414
Column Kit, 68 cm stainless steel
30424415
Column Kit, 98 cm stainless steel
30429931
Load Cell Cable Adapter Kit
30424025
Printer Holder Kit
Defender Series Base EN-7
LIMITED WARRANTY
OHAUS products are warranted against defects in materials and workmanship from the date of delivery through
the duration of the warranty period. During the warranty period OHAUS will repair, or, at its option, replace any
component(s) that proves to be defective at no charge, provided that the product is returned, freight prepaid, to
OHAUS. This warranty does not apply if the product has been damaged by accident or misuse, exposed to
radioactive or corrosive materials, has foreign material penetrating to the inside of the product, or as a result of
service or modification by other than OHAUS. In lieu of a properly returned warranty registration card, the warranty
period shall begin on the date of shipment to the authorized dealer. No other express or implied warranty is given
by OHAUS Corporation. OHAUS Corporation shall not be liable for any consequential damages.
As warranty legislation differs from state to state and country to country, please contact OHAUS or your local
OHAUS dealer for further details
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