PST MICHELL Instruments ADG400 Manuale utente
ADG400
Advanced Dew-Point Generator
User Manual
99998 Issue 1
November 2022
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© 2022 Michell Instruments
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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 Prole 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 Prole 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 Prole Mode ...............................................................................................7
Figure 4 Main Screen in Manual Mode .......................................................................8
Figure 5 Set Point Picker Screen ...............................................................................9
Figure 6 Main Screen in Prole Mode ........................................................................9
Figure 7 Prole 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 Prole 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 Specications .............................................................................. 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 certicates. 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 specication.
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 Specication, 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-dened setpoints to be stored.
There are 3 modes of operation: Manual mode for push-button selection of set-points,
Prole 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 proles 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.
Indice
