Ohaus WB User Manual

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Scale BaseScale Base

Scale Base

Scale BaseScale Base

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Models Models

Models

Models Models
WBS10,WBS10,

WBS10,

WBS10,WBS10,

WB10,WB10,

WB10,

WB10,WB10,

WBS25 and WBS25 and

WBS25 and

WBS25 and WBS25 and

WB25,WB25,

WB25,

WB25,WB25,

WB50,WB50,

WB50,

WB50,WB50,

WBS50WBS50

WBS50

WBS50WBS50

Instruction ManualInstruction Manual

Instruction Manual

Instruction ManualInstruction Manual

© Ohaus Corporation 1994, all rights reserved.

INTRODUCTION

This manual covers installation, and operation for the WB and WBS Series Washdown
Scale Base, Models WB10, WB25,WB50, WBS10, WBS25 and WBS50. To ensure
proper operation, please read this manual completely.

DESCRIPTIONDESCRIPTION

DESCRIPTION

DESCRIPTIONDESCRIPTION

The WB Series Washdown Scale Base consists of a stainless steel structure and
platform and an anodized Aluminium load cell. It is intended for use in a washdown
environment and may be hosed down using steam or detergents. The WB Series is
NOT intended for use in extremely hostile environments where caustic materials are
present in the atmosphere or are used during cleaning. Misuse of this equipment may
void the Warranty. The WBS Series Washdown Scale Base, which utilizes a stainless
steel structure, platform and load cell is recommended for such applications.

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APPROVALSAPPROVALS

APPROVALS

APPROVALSAPPROVALS

The WB and WBS Series of Washdown Scale Bases meet the requirements of NIST
Handbook 44, as listed below:

Certificate of conformance 88-204 was issued for the WB Series and Certificate of
Conformance 88-205 was issued for the WBS Series under the National Type
Evaluation Program of the National Conference on Weights and Measures.

MODEL MODEL

MODEL

MODEL MODEL

TYPE APPROVED CAPACITY X RESOLUTION TYPE APPROVED CAPACITY X RESOLUTION

TYPE APPROVED CAPACITY X RESOLUTION

TYPE APPROVED CAPACITY X RESOLUTION TYPE APPROVED CAPACITY X RESOLUTION

WB10 10 lb 0.002 lb
WB25 25 lb 0.005 lb
WB50 50 lb 0.01 lb
WBS10 10 lb 0.005 lb
WBS25 25 lb .01 lb
WBS50 50 lb .02 lb

The WB and WBS Series have also been approved by the U.S. Department of
Agriculture for use in Federally inspected meat and poultry processing plants.

UNPACKING AND SET UPUNPACKING AND SET UP

UNPACKING AND SET UP

UNPACKING AND SET UPUNPACKING AND SET UP

1. Carefully remove the Scale Base from the packing material and place it on a level
and stable surface.

2. Remove the stainless steel Platform and set it aside.

3. Locate the Level Indicator on the Sub-Platform.

4. The Level Indicator bubble should be totally enclosed by the scribed inner circle.
If leveling is required, loosen the locking Nuts of the four Leveling Feet and adjust
them until the Load Receiver is level. Retighten the Locking Nuts when leveling
has been completed.

5. Place the Platform on the Sub-Platform.

NOTENOTE

NOTE: It is recommended that the packing material be saved for use when storing or

NOTENOTE

transporting the Scale Base.

ASSEMBLYASSEMBLY

ASSEMBLY

ASSEMBLYASSEMBLY

When the Scale Base is to be used with an OHAUS I20W Washdown Indicator, connect
the Load Cell cable to the Indicator as indicated in the table.

DESCRIPTION DESCRIPTION

DESCRIPTION

DESCRIPTION DESCRIPTION

+ Excitation Green Red

- Excitation Black Black
+ Output Red Green

- Output White White
Ground Shield Shield

COLORCOLOR

COLOR

COLORCOLOR

WB Series WBS Series

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CALIBRATIONCALIBRATION

CALIBRATION

CALIBRATIONCALIBRATION

Prior to calibration of the weighing system, the Scale Base should be exercised by
applying and removing the full scale weight value several times to ensure more
accurate calibration.

ACCESSORIES AND REPLACEMENT PARTSACCESSORIES AND REPLACEMENT PARTS

ACCESSORIES AND REPLACEMENT PARTS

ACCESSORIES AND REPLACEMENT PARTSACCESSORIES AND REPLACEMENT PARTS

DESCRIPTIONDESCRIPTION

DESCRIPTION

DESCRIPTIONDESCRIPTION

Stainless Steel Platform 76689-01

(9" x 9")

Stainless Steel Platform 76689-02

(12" x 12")
10 lb WB Load Cell 90679-01
25 lb WB Load Cell 90679-02
50 lb WB Load Cell 90679-03
10 lb WBS Load Cell 90680-01
25 lb WBS Load Cell 90680-02
50 lb WBS Load Cell 90680-03
Adjusting Foot 76635-01
Tower Accessory Kit (for use with OHAUS I20W Indicator only).

11" Tall 76973-01

15" Tall 76973-00

NOTENOTE

NOTE: The 11" Tower is recommended for use with WB10 and WBS10.

NOTENOTE

SERVICE INFORMATIONSERVICE INFORMATION

SERVICE INFORMATION

SERVICE INFORMATIONSERVICE INFORMATION

For service assistance in the United States, please call Ohaus Corporation toll-free at
[phone]. An Ohaus Product Service Specialist will be available to help you.

PARTS INFORMATIONPARTS INFORMATION

PARTS INFORMATION

PARTS INFORMATIONPARTS INFORMATION

OHAUS PART NUMBEROHAUS PART NUMBER

OHAUS PART NUMBER

OHAUS PART NUMBEROHAUS PART NUMBER

If you require replacement parts or would like to purchase accessories, please call
Ohaus Corporation toll-free at [phone], an Ohaus Product Parts Specialist will
be available to help you.

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SPECIFICATIONSSPECIFICATIONS

SPECIFICATIONS

SPECIFICATIONSSPECIFICATIONS

MODELMODEL

MODEL

MODELMODEL

Capacity (lb) 10 25 50
Readability (lb) 0.002 0.005 0.005 0.01 0.01 0.02
Platform size (in) 9 x 9 12 x 12 12 x 12
Corner capacity* 100%
Safe overload* 150%
Maximum overload* 300%
Linearity* 0.015% 0.03% 0.015% 0.03% 0.015% 0.03%
Repeatability* 0.01% 0.01% 0.01% 0.01% 0.01% 0.01%
Shift accuracy* 0.02% 0.05% 0.02% 0.04% 0.02% 0.04%

(50% Capacity/
50% Distance)

Load excitation (V dc) 5V to 15V
Output impedance (ohms) 350
Output at rated load (mV/V) 2
Temperature range 32° to 104°F/0° to 40°C

WB10WB10

WB10

WB10WB10

WBS10 WBS10

WBS10

WBS10 WBS10

WB25WB25

WB25

WB25WB25

WBS25WBS25

WBS25

WBS25WBS25

WB50WB50

WB50

WB50WB50

WBS50 WBS50

WBS50

WBS50 WBS50

Storage temperature -30°to 70°C
range

Zero Tc* (%/ °C) 0.0026 0.0027 0.0026 0.0027 0.0026 0.0027
Span Tc* (%/ °C) 0.001 0.0015 0.001 0.0015 0.001 0.0015

* Values are given as % of rated load.

LIMITED WARRANTYLIMITED WARRANTY

LIMITED WARRANTY

LIMITED WARRANTYLIMITED 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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Ohaus Corporation
29 Hanover Road,
Florham Park, NJ 07932, USA
Tel: [phone],
Telex: 6853191 Ohaus UW, Fax: [phone]

Ohaus Europe Ltd.
Cottenham, Cambridge, ENGLAND
Tel: [phone], Fax: [phone]

Ohaus GmbH
Giessen, GERMANY
Tel: [phone], Fax: [phone]

Ohaus de Mexico, S.A. de C.V.
Mexico, D.F. MEXICO
Tel: [phone], Fax: [phone]

Ohaus Corporation
Mississauga, Ontario, CANADA
Tel: [phone], Fax: [phone]

Ohaus s.a.r.l.
Viroflay, FRANCE
Tel: [phone], Fax: [phone]

Ohaus Japan Division
Takarazuka, JAPAN
Tel: [phone], Fax: [phone]

Ohaus Instrumentos S.A.
Barcelona, SPAIN
Tel: & Fax: [phone]

P/N 76960-03

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