Issue Date: Valid Until: Reference No:

27 April26 AprilTS0104/0015

G Stones Technical Manager - Certification ServicesFor and on behalf of the Chief Executive

National Measurement and Regulation Office I Stanton Avenue I Teddington I TW11

Tel +44 (0) 20 8943 7272 I Fax +44 (0) 20 8943 7270 I Web The NMRO is an Executive Agency of the Department for Business Innovation and Skills

EC type-examination certificate UK/0126/0186

Issued by:

The National Measurement Notified Body Number 0126

In accordance with the requirements of the Measuring Filling Instruments) Regulations 2006 (SI 2006/1258) and the Measuring Instruments (NonPrescribed Instruments) Regulations 2006 (SI 2006/1270) which implement, in the United Kingdom, Council Directive 2004/22/EC, this ECissued to:

Webster Griffin Ltd Brooklands Park Farningham Road Crowborough East Sussex TN6 2JD United Kingdom

In respect of a family of automatic gravimetric filling instruments designated the PW*EW*-**-*, utilising the controller type Dialog 165 B, and having the following characteristics:

Reference accuracy class: Maximum capacity: Minimum Fill: Scale interval: Number of scale intervals

The necessary data (principal characteristics, alterations, securing, functioningidentification purposes and conditions (when applicable) are set out in the descriptive annex to this certificate.

UK/0126/

April 2015 April 2025

S0104/0015

Certification Services For and on behalf of the Chief Executive

Regulation Office I Stanton Avenue I Teddington I TW11 OJZ I United KingdomTel +44 (0) 20 8943 7272 I Fax +44 (0) 20 8943 7270 I Web www.gov.uk/nmro

is an Executive Agency of the Department for Business Innovation and Skills

MID Annex B Rev.

examination certificate

The National Measurement and Regulation Office Notified Body Number 0126

In accordance with the requirements of the Measuring Instruments (Automatic Gravimetric Filling Instruments) Regulations 2006 (SI 2006/1258) and the Measuring Instruments (NonPrescribed Instruments) Regulations 2006 (SI 2006/1270) which implement, in the United Kingdom, Council Directive 2004/22/EC, this EC type-examination certificate has been

In respect of a family of automatic gravimetric filling instruments designated the PW*tilising the controller type Dialog 165 B, and having the following characteristics:

Ref(x) = 0.2 Dependent upon load cell(s) specification Dependent upon load cell(s) specification ≥ 1 g ≤ 4000

The necessary data (principal characteristics, alterations, securing, functioningidentification purposes and conditions (when applicable) are set out in the descriptive annex

UK/0126/0186

MI-006

0135

OJZ I United Kingdom

MID Annex B Rev. 4 01 April 2015

Instruments (Automatic Gravimetric Filling Instruments) Regulations 2006 (SI 2006/1258) and the Measuring Instruments (Non-Prescribed Instruments) Regulations 2006 (SI 2006/1270) which implement, in the United

examination certificate has been

In respect of a family of automatic gravimetric filling instruments designated the PW*-**-* or tilising the controller type Dialog 165 B, and having the following characteristics:

The necessary data (principal characteristics, alterations, securing, functioning etc) for identification purposes and conditions (when applicable) are set out in the descriptive annex

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Descriptive Annex

1 INTRODUCTION

This pattern is an automatic gravimetric filling instrument for dispensing predetermined loads of powdered or granular materials. The model types are designated as PW*-**-* (Platform Weighing, for large capacities) or EW*-**-* (Electronic Weighing, for small capacities) and all consist of the following components:

− a material feed device, suitable for the product being packed

− a weighing unit, which may either be a weigh hopper or filling spout, supported by strain gauge load cell(s)

− an electronic indicator designated Dialog 165 B, manufactured by Weber Waagenbau GmbH, which is used in conjunction with either the Dialog 165 V, Dialog 165 G or Dialog 165 T (Dialog Touch) display

The electronic indicator controls the operation of the instrument in response to signals from the load cell(s) and the status of various external plant sensors.

2 DESCRIPTION

2.1 Mechanical

The instrument comprises material handling facilities (feeding device and weighing unit) which shall enable it to respect the MPEs during normal operation.

2.1.1 Material feeding device

The feeding device may be any one of the following:

− Gravity catchgate feeder with 2 feed positions

− Slide valve feeder with 2 feed positions

− Vane feeder with 2 feed positions (optional vibration motors)

− Gravity butterfly valve feeder with 2 feed positions

− Diaphragm valve feeder with 2 feed positions

− Belt feeder with single speed and product plough and catchgate

− Belt feeder with two speeds and product plough and catchgate

− Belt feeder with variable speed and product plough and catchgate

− Single screw feeder with 2 speeds (fast = main feed, slow = fine feed)

− Twin screw feeder (large = main feed, small = fine feed)

− Single screw feeder with variable speed control

− Vibratory table feeder with single vibration rate

− Vibratory table feeder with double vibration rate

− Vibratory table feeder with variable speed control

2.1.2 Weighing unit

2.1.2.1 Net weigher

For the net weigher, the weighing unit is a load receptor (weigh hopper). Mounted above the weigh hopper is the material feed device which discharges product into the hopper until the preset target weight is reached. One, two or three load cells are used to signal the amount of product in the hopper to the weigh controller. Their capacities are arranged to suit the weighed load. The weigh hopper can have one or two discharge doors fitted. These opened and closed by pneumatically controlled cylinders which have sensor switches to signal door(s) closed.

2.1.2.2 Gross weigher

For the gross weigher the weighing unit is a load receptor with no discharge doors so that the product is weighed directly into a bag or container.

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2.1.2.3 Bag clamp To ensure that the weighed product is discharged into the bag, a retaining clamp is fitted to the discharge outlet. This clamp can be operated manually, or automatically after a time delay. 2.1.3 Load cell(s) Any compatible load cell(s) may be used providing the following conditions are met:

− There is a respective OIML Certificate of Conformity (R60) or a Test Certificate (EN45501) issued for the load cell by a Notified Body responsible for type examination under Directive 2009/23/EC.

− The certificate contains the load cell types and the necessary load cell data required for the manufacturer’s declaration of compatibility of modules (WELMEC 2, Issue 6, 2014, section 10), and any particular installation requirements. A load cell marked NH is allowed only if humidity testing to EN45501 has been conducted on this load cell.

− The compatibility of load cells and indicator is established by the manufacturer by means of the compatibility of modules form, contained in the above WELMEC 2 document.

− The load transmission conforms to one of the examples detailed in WELMEC 2.4 Guide for Load Cells.

2.2 Electrical

The controller is designed to be mounted inside a suitable control panel. The controller contains the A/D data processing unit and transmits the weight data via a serial interface to the remote panel mounted display. There are two options for the display as follows:

− Model 165 V (Figure 1) which is a 7-digit, 7-segment vacuum fluorescent display with LEDs provided to show the status of the pushbuttons. The weighing cycle and error alarms are given by a number of text and number messages on the display.

− Model 165 G (Figure 2) which is a graphic display unit with a multi-line 16-digit LCD display provided for status and alarm messages.

− Model 165 T (Figure 3) which is a 7” touch display.

The electronic indicator allows the connection of strain gauge load cells. The load cell output voltage is amplified by a pre-amplifier and is digitised according to the Delta-Sigma procedure. The data is then further processed by the CPU. 2.3 Devices

− Initial zero-setting device (20% of Max)

− Semi-automatic zero-setting (4% of Max)

− Zero-tracking (4% of Max)

− Zero-indicating device

− Semi-automatic subtractive tare balancing device (≤ 100% Max)

− Semi-automatic additive tare balancing device (≤ 110% Max)

− Preset tare (≤ 100% Max or 100% Max1)

− Multiple interval or range (with a maximum of 3 partial ranges)

− Supplementary display for non-legally relevant information

− Enunciators (Net, stability, range)

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− Temporary recall and display of tare or gross

− Printing

− Releasing of zero-setting, tare, switching from gross to net, and summing of weights via interface or digital I/Os

− Checking facilities for detection of significant faults. An error message is shown in the display in the form “Err XX”, where XX is the specific error code

− Checking of display upon power up

− Automatic in-flight correction

− Automatic batching optimisation via coarse feed cut off point

− Automatic final feed correction

2.4 Operation 2.4.1 Sequence of operation i) Following power-on, the weight controller goes through a self-test routine, illuminating all

segments of the display and illuminating the status indicators contained in the function keys.

ii) The target weight is selected by the operator, either by selection of the required SORT

SELECTION on the controller, or via a remote switch or PLC as required. If the START key is used, then only a single will be performed. However, if a remote start signal is used the instrument will automatically fill bags until stopped by the operator, an error occurs, or an end of batch is reached.

iii) For a net weigher, upon receipt of the START signal the weight display will automatically

zero provided that the weight is within the zero setting range of – 1 % to + 3 % of Max. The weigh hopper is filled to the target weight. An automatic top-up sequence is provided to ensure that the fill is to the target weight. At the end of the filling cycle the hopper contents are discharged into the bag positioned below.

iv) For a gross weigher, the operation is as described in 4.1.3 with the exception that upon

receipt of the START signal the weight of the empty bag is automatically tared and the bag is directly filled with material to the target weight. The filling sequence will only commence if a bag is in position.

v) To always ensure there is a suitable supply of product in the supply hopper above the

weighing system a low level probe is connected to the controller. The normal weighing cycle cannot be started if this signal is not present. This signal can be overridden to enable the supply hopper to be cleared.

vi) Automatic zeroing (net weigher) or taring (gross and loss-in-weight weigher) occurs at

the start of the first filling cycle. Zeroing or taring, as appropriate, may be programmed in cycles from 1 to 99.

vii) After-flow correction is manually entered during the set up procedure. The controller automatically adjusts the ‘in-flight’ correction dependent upon the data collected after every checked weighing cycle to achieve the optimum target weight. (Cycle setting 1...99 max).

viii) The sequence control for filling operations may also include the following functions:

− batch mode with pre-selected total weight

− batch mode with pre-selected total quantity

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2.4.2 Interlocks i) The system cannot start if:

− the emergency stop pushbutton has been pressed

− any guard is open or removed

− the main line air pressure is below the set level

− motor overloads or circuit breakers are tripped ii) If the low level probe in the supply hopper is uncovered the weighing cycle cannot start,

unless the override switch is set to enable the hopper to be cleared, in which case a warning lamp will illuminate.

iii) Weighing cannot start if there is an alarm active. iv) If during a check-stop cycle a weighment is found to be outside the upper and lower

tolerances, the weighment cannot be discharged automatically and an alarm is given. v) Weighing cannot start unless the weigh scale reading is within 0.25 e of zero. vi) For the net weigher, zeroing cannot be done automatically outside the limits of + 3 % or

– 1 % of Max around zero. vii) For the net weigher, the weighing cycle cannot start if:

− a discharge cycle is active

− the weigh hopper doors are not closed viii) For the net weigher, the weighment cannot be discharged if a bag is not in position to

receive the load, or if the scale is overloaded. ix) For the gross weigher, the tare operation cannot be performed unless the weight of the

bag is within the allowable value for the system capacity. x) For the gross weigher, the weighing cycle cannot start if:

− no bag is clamped to the spout

− the bag clamps are not fully closed

− a bag from the previous cycle has not been released from the clamps xi) Weighing cannot start if the controller is in static weighing mode or the sort code

selected does not have all of the parameters selected.

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3 TECHNICAL DATA 3.1 The system has the following technical characteristics:

Reference accuracy class Ref(x) 0.2

Power supply 24 VDC

Maximum capacity (Max) Dependent upon load cell(s) specification

Scale interval (d) ≥ 1 g

Maximum number of scale intervals (n) 4,000

Load cell excitation voltage 12-24 VDC

Minimum/Maximum input impedance 37.5/4000 Ω

Load cell connection 4 or 6-wire system

Max cable length (indicator to junction of cell cable(s))

400 m/mm2

Minimum input voltage per scale interval 1.0 µV/div

Apportioning factor for controller pi = 0.5

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

Climatic environment Closed, non-condensing

EM Classification E2

3.2 Minimum load (MinFill)

d (g)

X(0.2) (g)

X(0.5) (g)

X(1) (g)

X(2) (g)

1 301 40 20 10

2 1206 160 40 20

5 3015 1205 200 50

10 6030 2410 1210 200

20 18080 4820 2420 1200

50 45200 18100 6050 3000

100 904000 36200 18100 6000

200 180800 72400 36200 18000

500 452000 181000 90500 45000

3.3 Documentation and drawings

The instrument is fully described in technical file reference TS0104/0015/4/1. 3.4 Software

3.4.1 Verification information The software version for the Dialog 165 B unit can be checked via the software menu and shall be dA 01.0A. 3.4.2 Securing The calibration and setup parameters are stored in a separate non-removable EPROM memory area fitted on the main PCB.

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4 PERIPHERAL DEVICES AND INTERFACES

4.1 Interfaces

The instrument may have the following interfaces (Figure 4):

− Load cell connection

− Serial (RS232/422/485/20mA)

− Parallel I/Os

− Profibus

− CAN-bus

4.2 Peripheral devices

The instrument may be connected to any peripheral device that has been issued with an Evaluation certificate or Parts certificate by a Notified Body responsible for Annex B (MI-006) under Directive 2004/22/EC in any Member State and bears the CE marking of conformity to the relevant directives; or

A peripheral device without a test certificate may be connected under the following conditions:

− it bears the CE marking for conformity to the EMC Directive;

− it is not capable of transmitting any data or instruction into the weighing instrument, other than to release a printout, checking for correct data transmission or validation;

− it prints weighing results and other data as received from the weighing instrument without any modification or further processing; and

− it complies with the applicable requirements of Paragraph 8.1 of Annex I.

5 APPROVAL CONDITIONS

The certificate is issued subject to the following conditions:

5.1 Legends and inscriptions

5.1.1 The instrument bears the following legends (Figure 5):

‘CE’ marking Supplementary metrology marking Notified body identification number Reference accuracy class, Ref(x) Accuracy class X(x) Maximum capacity (Max) Minimum capacity (Min) Rated minimum fill (MinFill) Scale interval (d) Maximum tare (T) Type designation Serial number Manufacturers mark or name Certificate number Information in respect of the conditions of use (climatic environment, EM classification, power supply, pressure, product, rate of operation, number of fills when applicable)

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5.2 The instrument shall be permanently installed or provided with a level indicator and levelling device. 6 LOCATION OF SEALS AND VERIFICATION MARKS

6.1 The ‘CE’ mark shall be impossible to remove without damaging it. The rating plate shall be impossible to remove without it being destroyed.

The markings and inscriptions shall fulfil the requirements of Paragraph 9 of Annex I of the Directive 2004/22/EC.

6.2 Where a load cell junction box is provided, anti-tamper screws and seals shall be fitted to the cover.

6.3 Link between pins 9 & 10 on the load cell connector that prevents access to the calibration feature shall be in place.

6.4 The load cell connector is of a screened metal construction and is fitted with anti-tamper seals to prevent removal of the cover and thus prevent access to the calibration link. A further seal is fitted to prevent disconnection of the load cell cable from the controller.

6.5 The sealing measures (as shown in Figure 6) shall bear a securing mark, which may be:

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

7 ALTERNATIVES

There are currently no authorised alternatives.

8 ILLUSTRATIONS

Figure 1 Model 165 V display Figure 2 Model 165 G display Figure 3 Model 165 T display Figure 4 Dialog 165 B interfaces Figure 5 Rating plate example Figure 6 Sealing measures CERTIFICATE HISTORY

ISSUE NO. DATE DESCRIPTION

UK/0126/0186 27 April 2015 Type-examination certificate first issued.

- - No revisions have been issued.

Figure 1

Figure 2

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Figure 1 Model 165 V display

Figure 2 Model 165 G display

Figure 3

Figure 4

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Figure 3 Model 165 T display

Figure 4 Dialog 165 B interfaces

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Figure 5 Rating plate example

Figure 6

Crown copyright 2015 National Measurement and Regulation OfficeDepartment for Business, Innovation & SkillsThis material may be freely reproduced except for sale

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Figure 6 Sealing measures

egulation Office Department for Business, Innovation & Skills This material may be freely reproduced except for sale