OHAUS Defender Series, D12RQR, D25RQR, D50RQR, D12RTR, D25RTR Manual
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OHAUS Defender Series, D12RQR, D25RQR, D50RQR, D12RTR, D25RTR Manual

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Contents
OHAUS Defender Series, D12RQR, D25RQR, D50RQR, D12RTR, D25RTR Manual

INSTALLATION

Unpacking
Unpack and inspect the product to make sure that all components have been included. The package includes the following:

  • DefenderTM 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.
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.

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.

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

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

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

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 6wire 2.5 m L x 6-wire 2 m L x 6wire 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

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.

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

SAFETY PRECAUTIONS

warning 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

Find Quality Products Online at:
www.GlobalTestSupply.com
sales@GlobalTestSupply.com

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