GB-1136

Issue Date:

Reference No:

29 February 2012

T1128/0233

Signatory:

for

P R Dixon

Chief Executive

National Measurement Office | Stanton Avenue | Teddington | TW11 0JZ | United Kingdom

Tel +44 (0)20 8943 7272 | Fax +44 (0)20 8943 7270 | Web www.bis.gov.uk/nmo

EC Test Certificate – Rev 1 - 05 September 2011

EC Test Certificate

GB-1136 Revision 6

Issued by The National Measurement Office

Notified Body Number 0126

In accordance

with

Paragraph 8.1 of the European Standard on Metrological Aspects of Non-automatic Weighing Instruments EN45501:1992. The applied error fraction pi with reference to paragraph 3.5.4 of this standard is 0.5.

Applicant

Cardinal Scale Manufacturing Co.

PO. Box 151

Webb City

Missouri, 64870

USA

In respect of The model of an Indicating Device tested as a part of a weighing instrument.

Manufacturer: Cardinal Scale Manufacturing Co. Type: 758 CSV Indicator

Characteristics

Suitable for a non-automatic weighing instrument with the following characteristics: n ≤ 5000 for Class III instruments with single interval. n ≤ 1000 for Class IIII instruments with single interval.

Further details are provided in the Descriptive Annex.

Description and

documentation

The Indicating device is described in the Descriptive Annex. Documents appertaining to this test certificate are held by the National measurement Office.

Remarks

The Indicator has been tested and found to conform to the relevant parts of EN45501 and WELMEC Guide 2.1. A summary of the tests performed in support of this Test Certificate is provided in the Appendix to the Descriptive Annex.

This revision replaces previous versions of the certificate.

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TEST CERTIFICATION NO GB-1136 Revision 6

Descriptive Annex

1 INTRODUCTION

The 758 CSV indicator is a mains or battery operated digital indicating device (Figure 1).

2 FUNCTIONAL DESCRIPTION

2.1 Devices:

− Semi-automatic zero setting device

− Zero-tracking device

− Zero indicator

− Stability indicator

− Net / Gross Indicator

− Semi automatic tare device

− Pre-set tare device

− Tare weighing device

− Display test device

− Low battery indicating device

− Body mass index function

2.2 Construction

The indicator consists of a stainless steel enclosure, which has two stainless steel end plates, which prevent access to the calibration/setup button.

The indicator weight display consists of a 5 digit, 13 mm high, 7 segment LCD. A 3 digit, 13 mm high 7 segment display is used to display body mass index (BMI), and a 4 digit, 9 mm high, 7 segment display is used for height entry for the BMI function (Figure 2). The membrane keyboard consists of 10 numeric keys and 9 function keys, which control the following functions:

− On/Off

− Zero

− Units (kg only)

− Lock/Release (Not for article 1(2)(a) applications.)

− Net/Gross

− Tare

− ID/Height

− 0 – 9 numeric keys

− Enter

− Clear

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Fourteen enunciators are available to indicate:

− Battery low

− Gross

− Tare

− Net

− Stability

− Zero

− Weighing unit

− ID

− Height

− Body Mass Index

− Low – high bar type enunciator

− Percentage

Access to the battery compartment can be gained from the back of the enclosure (Figure 3).

2.3 Functions

The primary functions are detailed below:

2.3.1 The Lock/Release key shall not be enabled.

2.3.2 Power up

On power up, the weight indicator will test all memory functions, then test the display by turning on all the display segments and enunciators for about two seconds. After the display test, the instrument model number then software version number will be shown, before the current weight value using the previously established zero reference is displayed.

This test sequence may also be initiated manually by pressing the ON/OFF key to switch off the indicator then pressing it again to turn the indicator on and perform the test.

2.3.3 Display range

The indicator will display a weight value up to Max +9e; the error “OCAP” will be displayed to the operator for any weights above this.

2.3.4 Zero-Setting

Pressing the ZERO key causes a new zero reference to be established and the ZERO enunciator to turn on indicating the display is at the centre of zero; zero setting can only be successfully completed when the weight display is stable.

Zero-setting range is ≤4% of Max.

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2.3.5 Zero-Tracking

Zero tracking operates when the indication is at zero, (or gross zero after a tare),

when the weight display is stable and at a rate of ≤0.5d/s within 4% Max.

2.3.6 Units

The UNITS key is used to select the units in which the weight is displayed, and this is displayed on the weight display.

Available units of measure are kilograms (kg) or grams (g).

2.3.7 Tare

Semi-automatic Tare

The TARE key must be pressed twice to operate the semi-automatic tare device. The Net enunciator will be illuminated.

Pre-set Tare

The first press of the TARE key will display the current gross weight value with the least significant digit flashing. The numeric keys are used to enter the tare value followed by pressing the ENTER key.

The Net or Gross weight can be indicated by pressing the NET/GROSS key.

Tare Weighing

The current tare value can be viewed by pressing the TARE key. The display will show the TARE enunciator and display the tare value for approximately 1 second before switching back to the net weight mode and displaying the NET enunciator.

2.3.8 Body Mass Index Display

The Body Mass Index (BMI) function is initiated by pressing the ID-HEIGHT key. When the ID-HEIGHT key is pressed, the weight value is blanked and the numeric keys are used to enter the subject’s height in either feet and inches or in centimetres followed by the ENTER key. The BMI value is displayed to the right of the weight display and also shown as an analogue value using the bar graph display below the digital BMI value.

The BMI function is enunciated by the words “BODY MASS INDEX” on the display when the function is in use.

2.3.9 Software Version

The software version number is displayed during the power up sequence of the instrument. The software version uses a format of XX.YY.ZZ where XX is the version of the legally relevant software and YY.ZZ are the versions of the non-legally relevant software. Software versions up to and including 3.YY.ZZ are covered by this approval.

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2.4 Electronics

The 758CSV indicator uses a single printed circuit board, which contains all of the instrument circuitry. The indicator uses an ST Microelectronic 8-bit micro-controller, which has 32 Kb of flash program memory, 1 Kb of static ram and 2 Kb of EEPROM. All calibration and metrological set-up data is contained in non-volatile memory.

The power supply is provided by one of the two external mains power adapter modules specified below. Both can accept an input voltage from the from 190 to 230 VAC 50 or 60 Hz. The indicator may be powered from six internal “C” size batteries. The minimum battery operating voltage is 5.3 VDC.

The mains power adapter may be either:

Cardinal/Detecto type, model: MKD-140300 Altai type, model: P006H(AL650)

2.5 Drawings

Drawing No. Description

8555-C201-02 Controller board circuit diagram

8555-D207-0A Final assembly diagram.

3 TECHNICAL CHARACTERISTICS

3.1 Technical data

Power supply 190 to 230VAC 50/60 Hz

Maximum number of scale intervals 5000

Maximum tare - Max

Loadcell excitation voltage 5 VDC

Minimum loadcell impedance 87 Ω

Maximum loadcell impedance 1000 Ω

Minimum input voltage per verification scale interval

1.2 µV

Measuring range minimum voltage 6 mV

Measuring range maximum voltage 15 mV

Fraction of maximum permissible error

Pind = 0.5

Operating temperature range -10°C to +40°C

Loadcell cable 4 conductor per core, shielded, polymer overall sheath. Maximum length = 3 m

4 INTERFACES

The back of the instrument has the following protected interfaces:

- 12 VDC power input - 9 pin “D” sub-miniature connector for the loadcell signal input.

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5 LOCATION OF INSCRIPTIONS

5.1 The indicator shall bear the following markings:

Manufacturers mark or name Test Certificate number Figure 4 shows the data plate for the indicator when part of a complete instrument.

6 LOCATION OF SEALS, VERIFICATION MARKS AND CE MARK

6.1 Access to the PCB and the calibration/setup button is prevented by the use of a stainless steel end plate, which is secured into position by a wire and lead seal through the drilled heads of the retaining screws (Figure 5).

The load cell cable connector is also secured to the indicator by the use of a wire and lead seal (Figure 5).

Components that may not be dismantled or adjusted by the user will be secured by a wire and lead seal and securing mark. The securing mark may be either:

- a mark of the manufacturer and/or manufacturer’s representative, or - an official mark of a verification officer.

6.2 The data plate will be mounted on the top-side of the indicator and will be mounted in such a manner that it is easily accessible and clearly visible in its regular operating position.

The CE and verification mark shall be affixed to the instrument and distinctly grouped together. It shall be impossible to remove the CE mark without damaging it. The data plate shall be impossible to remove without it being destroyed.

The markings and inscriptions shall fulfil the requirements of Paragraph 1 of Annex IV of the Directive 2009/23/EC.

7 ALTERNATIVES

7.1 Having a time and date feature included in the software.

7.2 Having an RS232 serial protected interface.

7.3 Having rechargeable batteries. The indicator contains a battery charging circuit. The external power supply, although of the same type, may be of a larger capacity.

7.4 Having the legends on the keyboard replaced by pictograms, as shown in Figure 6. The pictograms are explained in the instruction manual.

7.5 Having a facility for a technician or dealer to connect a computer, or similar device, to modify the language and/or format of the printed ticket. The metrological data cannot be changed by this means, remaining fully under the control of the indicator software.

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7.6 Having the indicator powered from any suitable external mains power adaptor module instead of those detailed in Section 2.4 above, but only if the indicator serial number shows that the date of manufacture was day 305 of the year 2005, or later.

Explanation: The serial number is of the form “EXXXYY-ZZZ”, where XXX is the day of the year (from 001 to 365), YY is the last two digits of the year, and ZZZ is a sequential number for that day of manufacture. All these indicators have a low-voltage inhibit which prevents operation when powered from a battery supply if that supply voltage drops too low. On indicators having a serial number of E30505-001 or later, this low-voltage inhibit also operates when an external mains power adaptor module is used.

7.7 Having a modified indicator as follows:

− Microprocessor changed from an ST Microelectronics part number ST72F324K6T6 to a Freescale microprocessor part number MC9S08JM60

− Event counter added to the log calibration and non legal-for-trade parameters

− Amplifier changed from a Linear Tech part number LT1112 to a Texas Instruments part number OPA2333

− Painted metal enclosure

− Additional USB, Ethernet and Digital Height rod interfaces Drawings for this construction are as follows:

− Controller circuit diagram 8555-D444-02 rev B

− PCB 8555-D444-0A rev E

8 ILLUSTRATIONS

Figure 1 758 CSV indicator Figure 2 LCD display and enunciators Figure 3 758 CSV back panel Figure 4 Data plate Figure 5 Sealing diagrams Figure 6 Keyboard with pictograms

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9 TEST CERTIFICATE HISTORY

ISSUE NO. DATE DESCRIPTION

GB-1136 22 October 2002 Test certificate first issued.

GB-1136 Revision 1

8 June 2004 Addition of alternative 7.1 and 7.2.

GB-1136 Revision 2

15 August 2005 Addition of alternative 7.3.

GB-1136 Revision 3

14 December 2005

Addition of alternatives 7.4 and 7.5.

GB-1136 Revision 4

19 January 2006 Addition of alternative 7.6.

GB-1136 Revision 5

17 November 2009

Maximum tare effect added to technical data. Addition of alternative 7.7.

GB-1136 Revision 6

29 February 2012 Section 2.3.9 modified to specify the version numbers covered by the certificate. Section 5 modified to reflect the markings for the indicator only.

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APPENDIX TO DESCRIPTIVE ANNEX

TESTS CARRIED OUT

The following tests were performed with the indicator connected to a loadcell simulator or to a small platform incorporating a loadcell, as specified in WELMEC 2.1 par. 5.

758 CSV:

EN45501 ref.

Test Report number

A.4.4 Weighing performance TR 562

A.4.6.1 Weighing accuracy with tare TR 562

A.4.10 Repeatability TR 562

A.5.2 Warm-up test TR 562

A.5.3.1 Weighing performance at static temperatures TR 562

A.5.3.2 Temperature effect on no load indication SN 1122

A.5.4 Power voltage variation TR 562

B.2.2 Damp heat steady state TR 562

B.3.1 Short time power reductions TR 562

B.3.2 Bursts TR 562

B.3.3 Electrostatic discharges TR 562

B.3.4 Electromagnetic susceptibility TR 562

B.4 Span stability TR 562

B.3.1 Short time power reductions * SN 1122

B.3.2 Bursts * SN 1122

B.3.3 Electrostatic discharges * SN 1122

B.3.4 Electromagnetic susceptibility * SN 1122

*: all interfaces present

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Figure 1 758 CSV indicator

Figure 2 LCD display and enunciators

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Figure 3 758 CSV back panel

Figure 4 Data plate

Loadcell

connectio

12 VDC

power input

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Figure 5 Sealing diagrams

Figure 6 Keyboard with pictograms