Metro DataVac DPC 20 User Manual

Manometer for aerosols cans

Metro
ZA La Jonchère
F-74420 Boëge France

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User’s guide

MANOMETER DPC 20

Page 2 INTRODUCTION

CONTENTS

1. INTRODUCTION .....................................................................................................3

1.1 Presentation of the product ................................................................................3

1.2 Precautions ........................................................................................................3

1.3 Features.............................................................................................................4

1.4 Front panel.........................................................................................................5

1.5 Battery charge....................................................................................................5

2. CONFIGURATION OF PARAMETERS...................................................................6

2.1 Unit of measure..................................................................................................6

2.2 Displayed value..................................................................................................7

2.3 Limits of tolerance..............................................................................................7

2.4 Sample size .......................................................................................................7

2.5 Mastering ...........................................................................................................8

2.6 Measurement of differential pressure.................................................................9

2.6 Overview of setting options for parameters........................................................9

3. HOW TO MEASURE .............................................................................................10

3.1 Measuring without recording of values.............................................................10

3.2 Measuring with recording of values (SPC application) .....................................10

3.3 Measurement of differential pressure...............................................................11

4. USING THE DPC 20 WITH THE SPC 400 AEROSOL..........................................11

4.1 Using the manometer permanently connected.................................................11

4.2 Walking around measurements with data download ........................................11

5. HOW TO USE THE SERIAL LINK (RS-232) .........................................................12

5.1 The RS-232 connector .....................................................................................12

5.2 Commands.......................................................................................................12

5.2.1 Transfer of the measurement made on part number n..................................12

5.2.2 Transfer of all memorized measurements and reset of memory ...................13

5.2.3 Transfer of all memorized measurements.....................................................14

5.2.4 Transfer and erasure of memorized measurements one by one...................14

5.2.5 Reset of all memorized measurements.........................................................14

5.2.6 Imposed stand-by..........................................................................................15

6. MAINTENANCE OF THE MANOMETER ..............................................................15

MANOMETER DPC 20

INTRODUCTION Page 3

1. INTRODUCTION

1.1 Presentation of the product

The portable manometer DPC 20 was specially designed for measurement of
pressure in aerosol cans. It is particularly fit for Statistical Process Control. The DPC
20 is easy to use and perfectly suited for use in an industrial environment.

All manipulations are made by two control keys on the front panel. Its form and
lightness makes it easily hand-held. Meeting the needs for speed of operation, the
measured value is immediately appears on the digital display. Apart from
instantaneous value, the possibility to display maximum value (or minimum value in
case of negative pressure) enables reading of the value once the measurement is
made, without having to maintain the device on the valve of the can.

The DPC 20 is designed to cope with the conditions of use in an industrial
environment. It meets the requirements of prime importance such as rapidity,
reliability and precision. Its robust receptacle is entirely made of stainless steel and
aluminum, without any setting device. Its purpose conscious design and its high
quality components reflect the aim to make the DPC 20 a true shop floor device.

The sensor contains only a very small amount of gas, to avoid disturbance of
measurements of negative pressure. To enable cleaning, the DPC 20 is equipped
with an easily accessible flush mounted membrane of stainless steel.

1.2 Precautions

• Read this manual thoroughly before using the device.

• Do not expose the device to excessive temperature (more than 35°C).

• Do not use solvents when cleaning it.

• Do not expose the liquid crystal display to direct sun light (its life-time will be

shortened).

• Do not administer constraints on the membrane of the pressure gauge.

• Do not put the membrane of the pressure gauge in contact with metal objects.

• Do not over charge the CdNi accumulator. Do not leave the device in

permanent charge. The CdNi accumulator lifetime would be shorted.

• This device cannot be used in hazardous atmosphere.

MANOMETER DPC 20

Page 4 INTRODUCTION

1.3 Features

• 2000 points liquid crystal display (LCD)

• Memory capacity for recording of 20 measurements

• Configuration of parameters through two tactile keys

• 1 RS232 serial port for:

o Release and transfer of measurements to a PC or an SPC 400 Aerosol
o Loading of configuration parameters from a PC

• Temperature of operation: +15°C to +30°C

• Temperature sensitivity:

o Zero [% PE/K] = 0,02
o Sensibility [% PE/K] = 0,02

• Precision 0,1%

• Maximum relative humidity 80%

• Dimensions: diameter 50 mm, length 155 mm

• Weight: 340 g

• Measurement of pressure and vacuum with a measuring range from -1 to

20 bars

• Delivered with a male adapter (for tubes of dimensions between 3.3 and
4 mm) and a female adapter (316L stainless steel)

• Rechargeable through 220 V adapter

• Autonomy: 10 hours in operation or 100 hours on stand-by

• Flush mounted membrane pressure gauge (316L stainless steel)

This device corresponds to the EN61010-1 safety standard and EN55022 class
B, CEI 801-2 (level II), CEI 801-3 (level III), CEI 801-4 (level IV) electromagnetic
compatibility.

The user is cautioned that changes or modifications not expressly approved by the
party responsible for compliance could void the user’s authority to operate the
equipment.

MANOMETER DPC 20

INTRODUCTION Page 5

1.4 Front panel

low battery
on key indicator

DPC 20

Metro

removable measurement key digital display
adapter
RS-232
on / off switch connection

1.5 Battery charge

The DPC 20 is delivered with a 220 V adapter for charge of the battery. In operation,
the DPC 20 has 10 hours autonomy, and 100 hours in stand-by. When not used for
more than 1 minute (displaying zero), the manometer is automatically set on stand­by.

When the low battery indicator light, the battery of the manometer will have to be
recharged. To do this, connect the DPC 20 to the 220 V adapter and let it charge for
8 hours.

If the DPC 20 is connected to an SPC 400 Aerosol device, its charge is maintained
automatically.

Important notice:

Using the manometer with a low battery during a long time may modify some
permanent parameters. So the manometer should be out of work.

The manometer must be charged as soon as the low battery indicator is on (left
corner of the LCD display)

Do not over charge the CdNi accumulator. Do not leave the device in permanent
charge. The CdNi accumulator lifetime would be shorted.

Do not replace the CdNi accumulator by a battery.