Michell Instruments Hygrosmart HS3 User manual
Hygrosmart HS3
Advanced RH & Temperature Probe
User’s Manual
97516 Issue 5
July 2017
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© 2017 Michell Instruments
This document is the property of Michell Instruments Ltd. and may not be copied or
otherwise reproduced, communicated in any way to third parties, nor stored in any Data
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For Michell Instruments' contact information please go to
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HygroSmart HS3 Probe
HygroSmart HS3 User’s Manual
iv 97516 Issue 5, July 2017
1 INTRODUCTION ................................................................................................1
1.1 Operating Flexibility ............................................................................................ 1
2 INSTALLATION ..................................................................................................2
2.1 Unpacking.......................................................................................................... 2
2.2 Probe Layout...................................................................................................... 2
2.3 Maintenance Kits ................................................................................................ 3
2.4 Installation Instructions ...................................................................................... 4
2.4.1 Recommended Installation Environment ......................................................... 4
2.4.2 Element Filter Assembly Environment ............................................................. 4
2.4.3 Probe Wall Mounting ..................................................................................... 5
2.4.4 Duct Mounting .............................................................................................. 5
2.4.5 Pressurized Environment Installation .............................................................. 6
2.4.6 Electrical Requirements ................................................................................. 7
2.4.7 Electrical Connections.................................................................................... 7
2.4.8 Digital Serial Output ...................................................................................... 7
2.4.9 Analog Voltage Outputs ................................................................................. 7
2.4.10 Probe Ordered Configuration.......................................................................... 8
2.4.11 Probe Reconfiguration ................................................................................... 8
2.4.12 Probe & Sensor Serialization Tracking ............................................................. 8
3 PROBE MAINTENANCE KIT OPERATION ..............................................................9
3.1 Application Software Overview ............................................................................ 9
3.2 Installation......................................................................................................... 9
3.3 Establishing Communications .............................................................................. 9
3.4 Measurement Data Acquisition .......................................................................... 10
3.5 Probe Configuration.......................................................................................... 11
3.6 Probe Adjustment............................................................................................. 12
3.7 Loop Checking Simulation ................................................................................. 18
4 SENSOR REPLACEMENT ...................................................................................19
5 LOOP CHECKING SIMULATION .........................................................................21
5.1 Simulator Connection........................................................................................ 21
5.2 Checking /Programming the Simulators ............................................................ 21
6 MAINTENANCE ................................................................................................22
6.1 Cleaning the Filter Element ............................................................................... 22
6.2 Probe Adjustment Procedure ............................................................................. 23
Contents
Safety ................................................................................................................................vi
Electrical Safety ...........................................................................................................vi
Toxic Materials .............................................................................................................vi
Repair and Maintenance ...............................................................................................vi
Calibration...................................................................................................................vi
Safety Conformity ........................................................................................................vi
Abbreviations.....................................................................................................................vii
Warnings .......................................................................................................................... viii
HygroSmart HS3 User’s Manual
Michell Instruments v
Figures
Figure 1 HygroSmart HS3 Probe and Interchangeable Sensor .....................................1
Figure 2 HygroSmart HS3 Probe Packaging ...............................................................2
Figure 3 HygroSmart HS3 Probe Layout ....................................................................2
Figure 4 Acceptable Operating Conditions .................................................................4
Figure 5 Mounting Clamp (HS3-PMC) ........................................................................5
Figure 6 Probe Wall Mounting...................................................................................5
Figure 7 Duct Mounting ...........................................................................................5
Figure 8 Probe Metal Gland ......................................................................................6
Figure 9 Securing Tether..........................................................................................6
Figure 10 Electrical Connections .................................................................................7
Figure 11 Connection Console Screen Shot..................................................................9
Figure 12 Probe and Sensor Information Screen Shot ................................................10
Figure 13 Measurement Data Acquisition Screen Shot ................................................10
Figure 14 Output Channel Example Screen Shot ........................................................11
Figure 15 Probe Configuration Screen Shot ...............................................................11
Figure 16 Probe Adjustment Screen Shot ..................................................................12
Figure 17 Probe readings prior to adjustment............................................................13
Figure 18 Editing the Adjustment Table.....................................................................14
Figure 19 Probe readings post-adjustment ................................................................14
Figure 20 Probe readings prior to adjustment............................................................15
Figure 21 Editing the Adjustment Table.....................................................................15
Figure 22 Probe readings post-adjustment ................................................................16
Figure 23 Probe readings prior to adjustment............................................................16
Figure 24 Editing the Adjustment Table.....................................................................17
Figure 25 Probe readings post-adjustment ................................................................17
Figure 26 Simulator Window Screen Shot..................................................................18
Figure 27 Sensor Simulator ......................................................................................21
Figure 28 Filter Cap Removal ...................................................................................22
Figure 29 Filter Element Cleaning .............................................................................22
Figure 30 Dimensional Drawings...............................................................................26
Figure 32 Serial Port Parameters ..............................................................................28
Figure 31 Pinout......................................................................................................28
Appendices
Appendix A Technical Specifications.............................................................................. 25
A.1 Dimensions ................................................................................. 26
Appendix B HS3 Modbus Communications and Register Map .......................................... 28
B.1 Communications .......................................................................... 28
B.2 Code examples............................................................................ 29
B.3 Register Map ............................................................................... 30
Appendix C Quality, Recycling & Warranty Information................................................... 37
Appendix D Return Document & Decontamination Declaration........................................ 39
HygroSmart HS3 User’s Manual
vi 97516 Issue 5, July 2017
Safety
The manufacturer has designed this equipment to be safe when operated using the procedures
detailed in this manual. The user must not use this equipment for any other purpose than that
stated. Do not apply values greater than the maximum value stated.
This manual contains operating and safety instructions, which must be followed to ensure the safe
operation and to maintain the equipment in a safe condition. The safety instructions are either
warnings or cautions issued to protect the user and the equipment from injury or damage. Use
competent personnel using good engineering practice for all procedures in this manual.
Electrical Safety
The instrument is designed to be completely safe when used with options and accessories supplied
by the manufacturer for use with the instrument.
Toxic Materials
The use of hazardous materials in the construction of this instrument has been minimized. During
normal operation it is not possible for the user to come into contact with any hazardous substance
which might be employed in the construction of the instrument. Care should, however, be exercised
during maintenance and the disposal of certain parts.
Repair and Maintenance
The instrument must be maintained either by the manufacturer or an accredited service agent. For
Michell Instruments’ contact information please go to www.michell.com.
Calibration
HS3 Probes are adjusted in the factory prior to delivery. Recalibration is recommended after one
year of operation, depending on application. New, freshly calibrated sensors can be supplied quickly
by Michell Instruments, or recalibration can be carried out on site using one of the Michell humidity
calibration systems. Refer to Section 6.2 regarding calibration checking and adjustment of probes.
Safety Conformity
This product meets the essential protection requirements of the relevant EU standards and directives.
HygroSmart HS3 User’s Manual
Michell Instruments vii
Abbreviations
The following abbreviations may be used in this manual:
barg pressure unit (=100 kP or 0.987 atm) gauge
°C degrees Celsius
°F degrees Fahrenheit
EU European Union
g grams
g/m3grams per cubic metre
kg kilograms
Kj/kg kilojoules per kilogram
lb pound
mm millimetre
oz ounce
RH relative humidity
RS485 serial data transmission standard
RTU Remote Terminal Unit
T temperature
V Volts
V DC Volts of direct current
% percentage
" inch
ø diameter
HygroSmart HS3 User’s Manual
viii 97516 Issue 5, July 2017
Warnings
The following general warning listed below is applicable to this instrument. It is repeated in the text
in the appropriate locations.
!
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.
HygroSmart HS3 User’s Manual
Michell Instruments 1
INTRODUCTION
1 INTRODUCTION
The HygroSmart HS3 is an accurate, stable and user configurable probe designed to
provide reliable relative humidity measurement for process control in a wide range
of applications. The HS3 Probe features interchangeable sensor technology ensuring
minimal process downtime and a low cost of ownership.
Figure 1
HygroSmart HS3 Probe and Interchangeable Sensor
1.1 Operating Flexibility
The HS3 Probe has been developed to be 100% customer configurable. One stock unit
can be set up by a customer into an application specific configuration to cover any RH
demands on site. This flexibility saves time and budget.
• Adjustable zero/span ranging of the RH, Temperature and Calculated
Hygrometric Outputs
• Selectable 0 to 1, 2.5, 5, 10 V output signals
• 2 selectable output voltage measured (RH & T) parameters or a choice of
5 calculated parameters (eg dew point)
• Addressable Modbus RTU over RS485 communications for up to 32 probes
• Probe digital Zero/Span calibration trimming
Alternatively, the HS3 Probe can be configured at the factory at time of ordering for
customers who want a simple fixed configuration solution.
HygroSmart HS3 User’s Manual
297516 Issue 5, July 2017
INSTALLATION
2 INSTALLATION
2.1 Unpacking
Open the cardboard box and remove the plastic tray inside.
Figure 2
HygroSmart HS3 Probe Packaging
Please check that the following components are present:
• HygroSmart HS3 Probe (with the interchangeable HygroSmart HS3 sensor)
• Certificate of Calibration
• Quick Start Guide
• User Manual
2.2 Probe Layout
The HS3 Probe with its constituent parts and physical features is detailed in the layout
below:
98.5mm
3.87”
HygroSmart HS3 Probe Electronics HygroSmart HS3 Interchangeable Sensor
HS3-PE PAA-000002 HS3-PE PAA-000001
123456
1 M12 5-pin probe electrical connector
2 Probe serial number
3 Probe to sensor connector alignment marks
4 Rotating probe cuff
5 Sensor serial number
6 Filter assembly
Figure 3
HygroSmart HS3 Probe Layout
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