Michell Instruments HygroCal100 Bedienungsanleitung

HygroCal100

Humidity Validator

User’s Manual

97500 Issue 3

January 2018

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HygroCal100

HygroCal100 User’s Manual

iv 97500 Issue 3, January 2018

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

1.1 Operating Principle............................................................................................. 1

2 INSTALLATION..................................................................................................2

2.1 Unpacking.......................................................................................................... 2

2.2 Operating Requirements ..................................................................................... 3

2.2.1 Environmental Requirements ......................................................................... 3

2.2.2 Electrical Requirements ................................................................................. 3

2.3 Exterior Layout................................................................................................... 4

2.4 Rear Panel Layout ..............................................................................................7

2.4.1 Probe Input Connections ...............................................................................7

2.4.2 USB Communications Port ............................................................................. 8

2.4.3 Service Access Port....................................................................................... 8

2.4.4 Power Adaptor Input..................................................................................... 9

2.5 Top Panel Layout................................................................................................9

2.5.1 Probe Ports................................................................................................... 9

2.5.2 Desiccant Reservoir..................................................................................... 10

2.5.3 Saturator Reservoir .................................................................................... 10

3 OPERATION ....................................................................................................11

3.1 General Operational Information........................................................................ 11

3.2 Display ............................................................................................................ 11

3.3 Main Screen Layout.......................................................................................... 12

3.4 Menu Structure ................................................................................................ 13

3.4.1 Current Set Point ........................................................................................ 14

3.4.2 Probe Selection........................................................................................... 14

3.4.3 Operational Status Display........................................................................... 14

3.4.4 Calibration Settings..................................................................................... 15

3.4.4.1 Mode ................................................................................................... 15

3.4.4.2 Probes ................................................................................................. 16

3.4.4.3 Program............................................................................................... 17

3.4.4.4 Logging................................................................................................ 18

3.4.4.5 Reference Setup ................................................................................... 20

3.4.5 System Settings.......................................................................................... 21

3.4.5.1 Display................................................................................................. 21

3.4.5.2 Clock.................................................................................................... 22

3.4.5.3 About................................................................................................... 23

3.4.5.4 Correct................................................................................................. 23

3.4.6 Table View.................................................................................................. 24

3.5 Port Adaptors................................................................................................... 25

3.6 Probe Installation ............................................................................................. 25

3.6.1 Chamber Connection................................................................................... 25

3.6.2 Electrical Connection................................................................................... 26

3.7 Battery Operation (Optional) ............................................................................. 27

Contents

Safety ...............................................................................................................................vii

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

Toxic Materials............................................................................................................vii

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

Calibration..................................................................................................................vii

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

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

Warnings..........................................................................................................................viii

HygroCal100 User’s Manual

Michell Instruments v

3.7.1 Power Status Indicator................................................................................ 27

3.8 Operating Guide............................................................................................... 27

3.8.1 Manual Mode.............................................................................................. 27

3.8.2 Automatic Mode.......................................................................................... 28

3.9 Operating Practice............................................................................................ 29

3.9.1 Humidity Stabilization Times........................................................................ 30

3.9.2 Data Logging.............................................................................................. 30

3.10 Standby Mode.................................................................................................. 30

3.11 External Reference Conﬁguration....................................................................... 30

4 MAINTENANCE................................................................................................31

4.1 Desiccant Reservoir ......................................................................................... 31

4.2 Saturator Reservoir .......................................................................................... 32

4.3 Replacing the Internal Reference Sensor............................................................ 32

4.4 Calibration Correction ....................................................................................... 33

4.5 Calibration ....................................................................................................... 35

Tables

Table 1 Operation Mode Screen Parameters............................................................15

Table 2 Probe Setup Screen Parameters..................................................................16

Table 3 HygroCal100 Logging Screen Parameters ....................................................18

Table 4 RH Reference Setup Screen Parameters......................................................20

Table 5 Display Settings Screen Parameters ............................................................21

Table 6 Clock Settings Screen Parameters...............................................................22

Table 7 Port Adapter Order Codes..........................................................................25

Table 8 Electrical Connection..................................................................................26

Table 9 Power Status Indicator...............................................................................27

Table 10 Desiccant Order Codes...............................................................................31

Table 11 Calibration Correction ................................................................................33

HygroCal100 User’s Manual

vi 97500 Issue 3, January 2018

Figures

Figure 1 Front Panel................................................................................................4

Figure 2 Top Panel...................................................................................................5

Figure 3 Rear Panel .................................................................................................6

Figure 4 Probe Input Connections.............................................................................7

Figure 5 USB Communications Port...........................................................................8

Figure 6 Service Access Port.....................................................................................8

Figure 7 Power Adaptor Input ..................................................................................9

Figure 8 Probe Ports................................................................................................9

Figure 9 Desiccant Reservoir ..................................................................................10

Figure 10 Saturator Reservoir...................................................................................10

Figure 11 Main Screen.............................................................................................11

Figure 12 Main Screen Layout..................................................................................12

Figure 13 Set Point Entry Screen..............................................................................14

Figure 14 Calibration Settings Screen........................................................................15

Figure 15 Operation Mode Screen.............................................................................15

Figure 16 Probe Setup Screen..................................................................................16

Figure 17 Program Calibration Routine Screen...........................................................17

Figure 18 HygroCal100 Logging Screen.....................................................................18

Figure 19 Log Files Screen.......................................................................................19

Figure 20 RH Reference Setup Screen.......................................................................20

Figure 21 System Settings Screen.............................................................................21

Figure 22 Display Settings Screen.............................................................................21

Figure 23 Clock Settings Screen ...............................................................................22

Figure 24 About Screen ...........................................................................................23

Figure 25 Calibration Correction Screen ....................................................................23

Figure 26 Calibration in Progress Screen...................................................................24

Figure 27 Table view ...............................................................................................24

Figure 28 Port Adaptor ............................................................................................25

Figure 29 Port Adaptor Tool .....................................................................................25

Figure 30 Set Point Entry Screen..............................................................................27

Figure 31 Example of Calibration Routine..................................................................28

Figure 32 Visualization of Calibration Routine ............................................................28

Figure 33 Calibration Correction Setup Screen...........................................................33

Figure 34 Calibration Correction Screen ....................................................................34

Figure 35 Calibration Certiﬁcate Example ..................................................................35

Appendices

Appendix A Technical Speciﬁcations..............................................................................37

Appendix B Troubleshooting.........................................................................................39

Appendix C Quality, Recycling & Warranty Information...................................................41

Appendix D Return Document & Decontamination Declaration........................................43

HygroCal100 User’s Manual

Michell Instruments vii

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

qualiﬁed personnel and 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. The input power supply voltage is limited to 24 V DC.

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. Refer

to www.michell.com for details of Michell Instruments’ worldwide ofﬁces contact information.

Calibration

The recommended calibration interval for the HS3 control sensor is one year, unless otherwise

speciﬁed by Michell Instruments Ltd. The instrument should be returned to the manufacturer, Michell

Instruments, or one of their accredited service agents for re-calibration (go to www.michell.com for

contact information).

Safety Conformity

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

HygroCal100 User’s Manual

viii 97500 Issue 3, January 2018

Abbreviations

The following abbreviations may or may not be used in this manual:

AC alternating current

atm pressure unit (atmosphere)

bar pressure unit (=100 kP or 0.987 atm)

°C degrees Celsius

°F degrees Fahrenheit

COM common

dp dew point

EU European Union

HMI Human Machine Interface

Hz Hertz

IEC International Electrotechnical Commission

Nl/min normal liters per minute

lb pound

mA milliampere

mAh milliampere hour

max maximum

min minute(s)

mV millivolt(s)

N/C normally closed

N/O normally open

No number

PRT Platinum resistance thermometer (typically type Pt100)

psig pound(s) per square inch (gauge)

rh relative humidity

RTU Remote Terminal Unit

scfh standard cubic feet per hour

SD storage device card (memory card for storing datalog ﬁles)

sec second(s)

temp temperature

USB Universal Serial Bus

V Volts

Warnings

The following general warnings listed below are applicable to this instrument. They are

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.

DANGER

Electric

Shock Risk

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

indicate areas of potential risk of electric shock.

HygroCal100 User’s Manual

Michell Instruments 1

INTRODUCTION

1 INTRODUCTION

The HygroCal100 Portable Humidity Validator enables quick and convenient generation

of a known humidity condition at ambient temperatures.

The chamber allows seven relative humidity probes of various diameters to be installed

into the chamber simultaneously. The probes can be powered directly from the

HygroCal100, and monitored via the intuitive touch screen user interface.

This interface also allows the programming of a calibration proﬁle, so that a series of

humidity values can be generated and held automatically for a set time period. The

readings from all probes under test and the built-in reference can also be logged for

completely autonomous operation.

1.1 Operating Principle

The Validator operates on a divided ﬂow mixing principle. The main calibration chamber

is supplemented by two reservoirs, one of which contains desiccant, the other contains

a saturator, which consists of a small quantity of distilled water and a diffuser.

A pump circulates air through the system, which is directed either to the desiccant or

saturator reservoir by a 2-way valve. When ﬂowing through the desiccant, moisture is

removed from the air; when ﬂowing through the saturator, moisture is added to almost

completely saturate it at the prevailing temperature.

A Michell Instruments' Hygrosmart 3 control sensor is installed inside the calibration

chamber, continually measuring the temperature and relative humidity inside. When a

target humidity level is set via the user interface, the control system uses the reading of

the HS3 control sensor to determine whether to add humid air or dry air to the chamber

in order to reach the desired level. When the reading of the HS3 is equal to that of the

target set point, the system alternates between injections of dry and wet air to maintain

a constant humidity condition in the chamber.

HygroCal100 User’s Manual

297500 Issue 3, January 2018

INSTALLATION

2 INSTALLATION

2.1 Unpacking

The HygroCal100 will be supplied in a carry case (if this option was selected) or in a

cardboard box.

If the HygroCal was ordered with a carry case:

1. Remove the carry case from the packing box.

2. Open the carry case.

3. Remove the instrument and place on a level surface.

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