PST MICHELL Instruments ADG400 Manuale utente

ADG400

Advanced Dew-Point Generator

User Manual

99998 Issue 1

November 2022

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ADG400

ADG400 User Manual

iv 99998 Issue 1, November 2022

1 INTRODUCTION ................................................................................................1

1.1 Features ............................................................................................................ 1

1.2 Theory of Operation ........................................................................................... 2

2 INSTALLATION ..................................................................................................3

2.1 Unpacking the Instrument ................................................................................... 3

2.2 Power Supply ..................................................................................................... 3

2.3 USB Connection.................................................................................................. 3

2.4 Dry Gas Supply .................................................................................................. 3

2.5 Gas Connections ................................................................................................. 4

2.6 Typical Setup ..................................................................................................... 4

3 OPERATION ......................................................................................................5

3.1 First-time Operation ............................................................................................ 5

3.2 Typical Calibration Run ....................................................................................... 5

3.3 HMI ................................................................................................................... 6

3.4 Screensaver ....................................................................................................... 6

3.5 Main Screen ....................................................................................................... 7

3.6 Modes of Operation ............................................................................................ 8

3.6.1 Manual Mode ................................................................................................ 8

3.6.1.1 Set Point Picker ....................................................................................... 9

3.6.2 Prole Mode ................................................................................................. 9

3.6.3 Remote Mode ............................................................................................. 10

3.6.3.1 Remote Mode Commands ...................................................................... 11

3.6.4 Remote Access ........................................................................................... 12

3.6.5 Installing and Using the Remote Access Software .......................................... 12

3.6.6 Status Page ................................................................................................ 13

3.6.6.1 Transition Delay .................................................................................... 14

3.6.7 Settings Menu ............................................................................................. 14

3.6.8 Set Point Editor ........................................................................................... 15

3.6.8.1 Converting MFC Values to ml/min Flow Rates .......................................... 16

3.6.8.2 Adjusting Set Points .............................................................................. 16

3.6.9 Prole Editor ............................................................................................... 17

3.6.10 Saturator Filling Mode ................................................................................. 18

3.6.10.1 Saturator Filling Instructions .................................................................. 19

4 MAINTENANCE ................................................................................................20

4.1 Inlet Particulate Filter ....................................................................................... 20

4.2 Fuses .............................................................................................................. 20

4.3 General Troubleshooting ................................................................................... 21

4.4 Emptying the Saturators for Transport ................................................................ 22

Contents

Safety ................................................................................................................................vi

Electrical Safety ..........................................................................................................vii

Pressure Safety ...........................................................................................................vii

Hazardous Materials (WEEE, RoHS3 & REACH) ..............................................................vii

Safe Handling .............................................................................................................vii

Repair and Maintenance ..............................................................................................vii

Safety Conformity .......................................................................................................vii

Abbreviations .................................................................................................................... viii

ADG400 User Manual

Michell Instruments v

Tables

Table 1 Minimum Stabilization Times ........................................................................6

Table 3 Read Command Response Explanation ........................................................11

Table 2 Supported Serial Commands ......................................................................11

Table 4 Span of Installed MFCs ..............................................................................16

Figures

Figure 1 Typical Setup Diagram ................................................................................4

Figure 2 Manual Mode .............................................................................................7

Figure 3 Prole Mode ...............................................................................................7

Figure 4 Main Screen in Manual Mode .......................................................................8

Figure 5 Set Point Picker Screen ...............................................................................9

Figure 6 Main Screen in Prole Mode ........................................................................9

Figure 7 Prole Selection Screen .............................................................................10

Figure 8 Main Screen in Remote Mode ....................................................................10

Figure 9 Main Screen Shown on a PC via Remote Access Software ............................12

Figure 10 Status Page Screen ...................................................................................13

Figure 11 Settings Screen ........................................................................................14

Figure 12 Set Point Editor Screen .............................................................................15

Figure 13 Prole Editor Screen .................................................................................17

Figure 14 Saturator Filling Screen .............................................................................18

Figure 15 Saturator Fill Levels ..................................................................................18

Figure 16 ADG400 with Open Front Panel .................................................................19

Figure 17 ADG400 Internal View ..............................................................................22

Appendices

Appendix A Technical Specications .............................................................................. 24

A.1 Dimensions .................................................................................25

Appendix B Quality, Recycling, Compliance & Warranty Information ................................ 27

Appendix C Return Document & Decontamination Declaration ........................................ 29

ADG400 User Manual

vi 99998 Issue 1, November 2022

Safety

The instrument is designed to be completely safe when installed and operated correctly in accordance

with the information provided in this manual.

This manual contains all the required information to install, operate and maintain this product. Prior

to installation and use of this product, this entire manual should be read and understood. Installation

and operation of this product should be carried out by suitably competent personnel only. The

installation and operation of this product must be in accordance with the instructions provided and

according to the terms of any associated safety certicates. Incorrect installation and use of this

product other than those described in this manual and other than its intended purpose will render

all warranties void.

This product meets the essential protection requirements of the relevant EU & UK directives. Further

details of applied directives may be found in the product specication.

Electricity and pressurized gas can be dangerous. This product must be installed and operated only

by suitable trained personnel.

No user serviceable parts inside

Where this hazard warning symbol appears in the following

sections, it is used to indicate areas where potentially hazardous

operations need to be carried out and where particular attention to

personal and personnel safety must be observed.

Where this symbol appears in the following sections it is used to

indicate areas of potential risk of electric shock.

This product is intended for use only under the following conditions:

a. indoor use

b. altitude up to 2,000 m

c. temperature 5 °C...40 °C

(refer to Appendix A, Technical Specication, for Operating Temperature range)

d. maximum relative humidity 80 % for temperatures up to 31 °C decreasing

linearly to 50 %, relative humidity at 40 °C

e. MAINS supply voltage uctuations up to ±10 % of the nominal voltage

f. TRANSIENT OVERVOLTAGES up to the levels of OVERVOLTAGE CATEGORY ll

g. TEMPORARY OVERVOLTAGES occurring on the MAINS supply

h. applicable POLLUTION DEGREE 2 of the intended environment

ADG400 User Manual

Michell Instruments vii

Electrical Safety

Ensure electrical safety is complied with by following the directions provided here and observing all

local operation & installation requirements at the intended location of use.

This product is completely safe when using any options and accessories supplied by the manufacturer

of this product for use with it. Refer to Section 2 (Installation) of this manual for further details.

Pressure Safety

For this product to operate satisfactorily, pressurized gas must be connected to it. Observe all the

information contained within this manual and all local operation & installation requirements at the

intended location of use. Refer to Section 2 (Installation) of this manual for further details.

Hazardous Materials (WEEE, RoHS3 & REACH)

This product does not contain or release any prohibited chemicals listed on the SVHC (Substances

of Very High Concern) Candidate List. During the intended normal operation of this product it is not

possible for the user to come into contact with any hazardous materials. This product is designed to

be recyclable except where indicated.

Safe Handling

Appropriate lifting and handling techniques should be used when moving and installing the ADG400.

• The total weight of the product is 23 kg (51 lb).

• Before commencing any lifting or handling, ensure that the intended

location is suitable and is appropriately prepared.

• A clear path to the intended location should be made and appropriate

lifting aids used (e.g. a suitably rated trolley).

• Due to the bulky nature and weight of the product, it is recommended

that two people perform all handling operations.

• Be aware that saturators should be emptied of water before transporting

the ADG400. See Section 4.4 for instructions.

Repair and Maintenance

The instrument must be maintained either by the manufacturer or an accredited service agent. For

contact information, visit the website at www.michell.com.

Safety Conformity

This product meets the essential protection requirements of the relevant EU & UK directives. Further

details of applied standards may be found in Appendix B.

ADG400 User Manual

viii 99998 Issue 1, November 2022

Abbreviations

The following abbreviations are used in this manual:

barg pressure unit (=100 kP or 0.987 atm) (bar gauge)

°C degrees Celsius

°F degrees Fahrenheit

DC direct current

g grams

in inch(es)

µm micrometer

m/sec meters per second

mA milliampere

mm millimetres

MPa megapascal

Nl/min normal liters per minute

Nm Newton meter

oz ounces

psig pounds per square inch

RH relative humidity

scfh standard cubic feet per hour

fps feet per second

T temperature

V Volts

Ω Ohms

ø diameter

ADG400 User Manual

Michell Instruments 1

INTRODUCTION

1 INTRODUCTION

The ADG400 is designed for use as part of a hygrometry calibration system. It is capable

of repeatable generation of dew points across a range of -80 °C...+20 °C, when used in

conjunction with the Michell Instruments PSD2 pressure swing dryer.

The generator is based on the volumetric mixing of dry and wet gases. It gives the

fastest response when changing between set points in comparison to other dew-point

generator technologies (such as two-temperature, two-pressure or a combination of

both).

The controller comes pre-programmed with a standard table of dew-point set points,

from -80 °C to +20 °C at 10 °C intervals. The table contains ow rates for each of the 5

MFCs, along with solenoid settings that determine if 1 or 2 stage mixing is used. A user

table is also provided allowing up to 13 user-dened setpoints to be stored.

There are 3 modes of operation: Manual mode for push-button selection of set-points,

Prole mode for automatic timed changing of set-points, and Remote mode for changing

of set-points via serial commands sent over the USB port for integration with customer

software. Further to this, the ADG HMI can be displayed and interacted with on a PC

connected via the USB interface.

The ADG400 is designed to be used in conjunction with a high accuracy reference

instrument such as a Michell Instruments S8000 RS.

1.1 Features

The key features of the ADG include:

• Full-color touch-screen HMI

• 11-point factory-programmed dew-point setpoint table from -80 to +20 °C

at 10 °C intervals

• 13-point user programmable dew-point setpoint table

• 3 programmable 13-point automatic calibration proles with customizable

timings

• Change set points using serial commands via built-in USB port

• Remote Access mode allows HMI to be operated using a connected PC

• Temperature-controlled enclosure to ensure output stability and repeatability

ADG400 User Manual

299998 Issue 1, November 2022

INTRODUCTION

1.2 Theory of Operation

Dried air is supplied to the ADG – some of this dry air is used as-is for mixing, and

some is diverted through the two saturators. Each saturator is lled with distilled or

demineralized water, and the dry air stream is bubbled through this water via a sintered

nozzle, which creates a stream of wet air that can be used for mixing. Each saturator

is followed by a water trap which is necessary to prevent water from escaping the

saturation system when it is pressurized/depressurized.

The rst mixing stage comprises 3 high-precision mass-ow controllers. One MFC

controls the dry air ow from the external dry air source. The other 2 MFCs give coarse

and ne control of the wet air from the saturators. This stage enables dew points from

+20 °C to -20 °C to be generated.

The second mixing stage comprises of 2 further MFCs. One MFC controls a ow of dry

air from the external dry air source. The second MFC controls the ow of air from the

rst stage. This second mixing stage enables dew points from -30 to -80 °C.

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