Ohaus Champ SQ User Manual

Ohaus Corporation

19A Chapin Road
P.O. Box 2033
Pine Brook, NJ 07058-2033 USA
www.ohaus.com

Champ SQ - Scale Base

INSTRUCTION MANUAL

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Unauthorized changes or modifications to this equipment are not permitted. See manual for replacement parts.

NOTE: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant

to part 15 of the FCC rules.
These limits are designed to provide reasonable protection against harmful interfer- ence when the equipment is operated in
a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed
and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation
of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to
correct the interference at his own expense.

This Class A, digital apparatus meets all requirements of the Canadian Interference. Causing Equipment Regulations.

Cet appareil numerique de la classe A respecte toutes les exigences du Reglement sur le material broilleur du Canada.

This device corresponds to requirements stipulated in 73/23/EEC and features radio interference suppression

in compliance with valid EC Regulation 89/336/EEC. Note: The displayed value may be adversely affected
under extreme electromagnetic influences, eg. when using a radio unit in the immediate vicinity of the

device. Once the interference has been rectified, the product can once again be used for its intended pur­pose. The device may have to be switched on again.

Cet appareil correspond aux exigences selon la norme 73/23/CEE et est déparasité conformément à la directive de la CE
89/336/CEE en vigueur. Remarque: Dans des conditions dinfluences électromagnétiques extrêmes, par exemple en cas
dexploitation dun appareil radio à proximité immédiate de Iappareil la valeur daffichage risque dêtre influencée. Une fois
que linfluence parasite est terminée, le produit peut être de nouveau utilisé de manière conforme aux prescriptions; le cas
échéant, il est nécessaire de le remettre en marche.

Dieses Gerät entspricht den Anforderungen nach 73/23/EWG und ist funkentstört entsprechend der geltenden EG-Richtlinie
89/336/EWG. Hinweis: Unter extremen elektromagnetischen Einflüssen z.B. bei Betreiben eines Funkgerätes in
unmittelbarer Nähe des Gerätes kann eine Beeinflussung des Anzeigewertes verursacht werden. Nach Ende des
Störeinflusses ist das Produkt wieder bestimmungsgemäss benutzbar, ggfs. ist ein Wiedereinschalten erforderlich.

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1. OVERVIEW

2. PHYSICAL DESCRIPTION

Construction

Champ SQ is a single load cell base. The Champ SQ scale base can be connected to
a CD-11, CD-31, CD-33 or Ohaus Industrial Indicator (or other types). The Champ
SQ Washdown scale base (all stainless construction) is used with the Ohaus CW-11
Washdown Indicator.

Platform - Fabricated of stainless-steel
Scale Base - Formed and welded mild steel, painted black. The Champ washdown
scale base is an all stainless-steel design with a stainless-steel Load cell.

Overloading

Operation Environment

3. INSTALLATION PROCEDURES

Assembly and Installation

Corner Loading - 100% of full capacity.
Safe Overload - 150% of full capacity.
Ultimate Overload - 300% of full capacity.

Champ SQ is designed to meet NTEP 5000d and OMIL 3000e requirements to operate
in a temperature range from -10°C to 40°C, 0 to 95% relative humidity.

Examine the shipping box for any signs of damage. If DAMAGE is found, make a
claim with the carrier immediately.

Open the box and remove the scale assembly. Place the scale assembly on a stable
flat surface.

Connect to Ohaus industrial indicator.

Level the scale, apply power and weigh.

Good Wrong

Level Indicator

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Assembly and Installation (Cont.)

BEFORE CALIBRATION OR USE, REMOVE THE RED PLASTIC
SHIPPING T ABS IN THE CORNERS OF THE SCALE BASE.

Four Overload
Bolts ­Factory Setup

Remove Shipping

Spacers

Do Not Remove

Screws

Troubleshooting

Load Cell Replacement

Figure 1. Unpacking and Overload Protection.(Actual design may vary)

If operational difficulties are encountered, first obtain as much information as possible
regarding the problem. Failures and malfunctions often may be traced to simple causes
such as loose connections to the indicator, low battery power, improper setup, etc.

Remove the scale platform and disconnect the indicator battery and AC power source.

IMPORTANT NOTE
Wait 30 seconds after removing power to the
indicator before unplugging the load cell cable.

Remove the top load cell mounting bolts that secure the top frame to the load cell. Set
the top frame and load cell spacer aside. Remove the bottom load cell mounting bolts.
The load cell assembly can be removed from the lower base.

When reinstalling a load cell, reverse the preceding steps. Lubricate the threads and
under the head of the hex bolts before reinstalling. Using a torque wrench, tighten the
hex bolts to the following torque specifications:

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Load Cell Replacement (Cont.)

Overload Stop Adjustments

MODEL TORQUE OVERLOAD STOP OVERLOAD STOP

(Corner) (Center)
CQ10R 10N.m 1mm 0.5mm
CQ25R 10N.m 2mm 0.5mm
CQ50L 10N.m 3mm 0.75mm
CQ100L 15N.m 3mm 0.75mm
CQ250XL 80N.m 6mm 1.2mm
CQ10RW 10N.m 1mm 0.5mm
CQ25RW 10N.m 2mm 0.5mm
CQ50LW 10N.m 3mm 0.75mm
CQ100L 15N.m 3mm 0.75mm
CQ250XLW 80N.m 6mm 1.2mm

The overload stop gaps must be checked and reset if the top or bottom frame, or load
cell is replaced. To set the gaps, remove the platform, loosen the jam nuts (refer to
Figure 2), then use the proper size feeder gauge in the gap, turn the set screws until a
slight drag on the feeder is felt. Tighten the jam nut and recheck the gap. Re-adjust if
necessary, cover the platform and check for full capacity. Refer to Figure 3 for the
location of the overload stops and Table above for the gap settings per Order Number.

Shift Test

Figure 2. Figure 3.

A shift test verifies that all sections of the scale platform weigh within tolerance. If the
scale does not pass the shift test, verify the overload stop gaps before replacing the
load cell. No adjustment for the shift is possible. If the shift test cannot be passed, the
load cell must be replaced.

Place test weights equal to one third scale capacity sequentially at each of the positions
A, B, C, D, as shown in Figure 4. Note the indicator reading at each position.

Positions A, B, C, and D are centered at the
each quarter of the scale platform. The
following table shows the tolerance in d
(division) for the shift test.

Scale Test Acceptable Maintenance

Capacity Weight Tolerance Tolerance

5,000d 1,000d ±1.0d ±2.0d

(New Scale) (In Service)

Table No. 2 Tolerance Table for Shift Test

Figure 4. Shift Test.

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Factory Setup (Bench Scales)

When Champ SQ bases are connected to indicators in the factory, a full span calibra­tion is conducted during the configuration. Because of transportation, local environ­ment and variation in the earths gravitation field, the original factory settings must be
verified and checked in the field before use.

W ARRANTY

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

19A Chapin Road
P.O. Box 2033
Pine Brook, NJ 07058-2033 USA
www.ohaus.com

P/N 80250923

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