Fluke 5020A User Manual

®

5020A

Thermo-Hygrometer

Users Manual

December 2003

© 2003 Fluke Corporation, All rights reserved.
All product names are trademarks of their respective companies.

LIMITED WARRANTY AND LIMITATION OF LIABILITY

Each Fluke product is warranted to be free from defects in material and workmanship under normal use and
service. The warranty period is one year and begins on the date of shipment. Parts, product repairs, and
services are warranted for 90 days. This warranty extends only to the original buyer or end-user customer of
a Fluke authorized reseller, and does not apply to fuses, disposable batteries, or to any product which, in
Fluke's opinion, has been misused, altered, neglected, contaminated, or damaged by accident or abnormal
conditions of operation or handling. Fluke warrants that software will operate substantially in accordance
with its functional specifications for 90 days and that it has been properly recorded on non-defective media.
Fluke does not warrant that software will be error free or operate without interruption.

Fluke authorized resellers shall extend this warranty on new and unused products to end-user customers
only but have no authority to extend a greater or different warranty on behalf of Fluke. Warranty support is
available only if product is purchased through a Fluke authorized sales outlet or Buyer has paid the
applicable international price. Fluke reserves the right to invoice Buyer for importation costs of
repair/replacement parts when product purchased in one country is submitted for repair in another country.

Fluke's warranty obligation is limited, at Fluke's option, to refund of the purchase price, free of charge repair,
or replacement of a defective product which is returned to a Fluke authorized service center within the
warranty period.

To obtain warranty service, contact your nearest Fluke authorized service center to obtain return
authorization information, then send the product to that service center, with a description of the difficulty,
postage and insurance prepaid (FOB Destination). Fluke assumes no risk for damage in transit. Following
warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Fluke
determines that failure was caused by neglect, misuse, contamination, alteration, accident, or abnormal
condition of operation or handling, including overvoltage failures caused by use outside the product’s
specified rating, or normal wear and tear of mechanical components, Fluke will provide an estimate of repair
costs and obtain authorization before commencing the work. Following repair, the product will be returned to
the Buyer transportation prepaid and the Buyer will be billed for the repair and return transportation charges
(FOB Shipping Point).

THIS WARRANTY IS BUYER'S SOLE AND EXCLUSIVE REMEDY AND IS IN LIEU OF ALL OTHER
WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY
OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. FLUKE SHALL NOT BE LIABLE
FOR ANY SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES OR LOSSES,
INCLUDING LOSS OF DATA, ARISING FROM ANY CAUSE OR THEORY.

Since some countries or states do not allow limitation of the term of an implied warranty, or exclusion or
limitation of incidental or consequential damages, the limitations and exclusions of this warranty may not
apply to every buyer. If any provision of this Warranty is held invalid or unenforceable by a court or other
decision-maker of competent jurisdiction, such holding will not affect the validity or enforceability of any other
provision.

Fluke Corporation
P.O. Box 9090
Everett, WA 98206-9090
U.S.A.

Fluke Europe B.V.
P.O. Box 1186
5602 BD Eindhoven
The Netherlands

11/99

To register your product online, visit register.fluke.com

Table of Contents

Chapter Title Page

1 Introduction and Specifications ........................................................ 1-1

Introduction........................................................................................................ 1-3

Symbols Used .................................................................................................... 1-4

Safety Information ............................................................................................. 1-4

Technical Support.............................................................................................. 1-6

Specifications..................................................................................................... 1-7

Environmental Conditions................................................................................. 1-8

5020A ............................................................................................................ 1-8

5026A-H/S..................................................................................................... 1-8

AC Adapter.................................................................................................... 1-8

General to all ................................................................................................. 1-8

2 Quick Start .......................................................................................... 2-1

Introduction........................................................................................................ 2-3

Unpacking.......................................................................................................... 2-3

Use Proper Care................................................................................................. 2-3

Learn About the Features and Components....................................................... 2-3

Install the Battery............................................................................................... 2-3

Connect the Sensor ............................................................................................ 2-3

Connect the Power Source................................................................................. 2-4

Switch the Power On ......................................................................................... 2-4

Measure Temperature ........................................................................................ 2-4

3 Parts and Controls ............................................................................. 3-1

Introduction........................................................................................................ 3-3

Front Panel......................................................................................................... 3-3

Top Panel ........................................................................................................... 3-4

Right Side Panel................................................................................................. 3-4

Left Side Panel................................................................................................... 3-5

Back Panel ......................................................................................................... 3-5

Quick Buttons .................................................................................................... 3-6

Configurations ................................................................................................... 3-6

Accessories ........................................................................................................ 3-6

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4 General Operation.............................................................................. 4-1

Introduction........................................................................................................ 4-3

DC Power Source............................................................................................... 4-3

Battery................................................................................................................ 4-3

Sensor Configuration......................................................................................... 4-4

Power Switch ..................................................................................................... 4-4

Power On Self-Test............................................................................................ 4-4

Display Contrast ................................................................................................ 4-4

Display............................................................................................................... 4-4

Alarm Screen ..................................................................................................... 4-4

Measuring .......................................................................................................... 4-4

Unit of Temperature........................................................................................... 4-5

Recording Measurements................................................................................... 4-5

Sensors............................................................................................................... 4-5

5 Menu Functions.................................................................................. 5-1

Introduction........................................................................................................ 5-3

Channel Menu.................................................................................................... 5-3

Channel Setting ............................................................................................. 5-4

Sensor ID....................................................................................................... 5-5

Sensor Lock................................................................................................... 5-6

Sensor Cal...................................................................................................... 5-6

Display Menu..................................................................................................... 5-7

Display Setting .............................................................................................. 5-8

Display Layout .............................................................................................. 5-9

Field Data ...................................................................................................... 5-9

Graph Scale ................................................................................................... 5-11

Display Reset................................................................................................. 5-12

Data Menu.......................................................................................................... 5-13

Data Record................................................................................................... 5-14

Record Setting........................................................................................... 5-14

Data View ................................................................................................. 5-15

Data Print .................................................................................................. 5-17

Data Storage.............................................................................................. 5-17

Data Clear.................................................................................................. 5-18

Daily Stats ..................................................................................................... 5-18

Stats Setting............................................................................................... 5-19

Stats View ................................................................................................. 5-20

Stats Print .................................................................................................. 5-20

Stats Reset................................................................................................. 5-21

Stats Clear ................................................................................................. 5-21

Data Card....................................................................................................... 5-22

File Write .................................................................................................. 5-22

File View................................................................................................... 5-23

Alarm Menu....................................................................................................... 5-24

Alarm Setting................................................................................................. 5-25

Sensor Alarm................................................................................................. 5-26

System Alarm................................................................................................ 5-26

Alarm View ................................................................................................... 5-27

System Menu ..................................................................................................... 5-27

System Setting............................................................................................... 5-28

Date Time ...................................................................................................... 5-29

Comm Setting................................................................................................ 5-30

Serial ......................................................................................................... 5-31

ii

Contents (continued)

IR............................................................................................................... 5-32

Password........................................................................................................ 5-32

System Info.................................................................................................... 5-34

6 Digital Communications Interface..................................................... 6-1

Introduction........................................................................................................ 6-3

Communications................................................................................................ 6-3

Serial Wiring ................................................................................................. 6-3

Interface Commands.......................................................................................... 6-4

Command Summary...................................................................................... 6-4

Command Syntax .......................................................................................... 6-4

Commands ......................................................................................................... 6-12

Alarm Commands.......................................................................................... 6-13

Measurement Commands .............................................................................. 6-22

Data Commands ............................................................................................ 6-26

Measurement Control Commands................................................................. 6-30

Channel Commands....................................................................................... 6-32

Calibration Commands.................................................................................. 6-33

System Commands ........................................................................................ 6-35

Communication Interface Commands........................................................... 6-37

Date and Time Commands ............................................................................ 6-39

Password Commands..................................................................................... 6-41

Status Commands.......................................................................................... 6-44

Port Numbers................................................................................................. 6-52

Date and Time Formats ................................................................................. 6-53

7 Calibration Procedure........................................................................ 7-1

Introduction........................................................................................................ 7-3

Equipment.......................................................................................................... 7-3

Preparation......................................................................................................... 7-3

Calibration Points .............................................................................................. 7-3

Temperature and Humidity Measurement Errors .............................................. 7-4

Temperature and Humidity Adjustments........................................................... 7-4

8 Maintenance and Troubleshooting.................................................... 8-1

Maintenance....................................................................................................... 8-3

Troubleshooting................................................................................................. 8-3

Incorrect temperature or humidity reading.................................................... 8-3

Missing or Scattered Graph Data................................................................... 8-3

Blank screen .................................................................................................. 8-4

Error message at power up ............................................................................ 8-4

Self-Test Error Messages .............................................................................. 8-4

Start-up Error Messages ................................................................................ 8-5

Downloading Recorded Data............................................................................. 8-5

Placement of IR Dongle for Transfer of Data.................................................... 8-5

CE Comments.................................................................................................... 8-6

EMC Directive............................................................................................... 8-6

Immunity Testing...................................................................................... 8-6

Emission Testing....................................................................................... 8-6

Low Voltage Directive (Safety) .................................................................... 8-6

Frequently Asked Questions.............................................................................. 8-6

Index

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iv

List of Tables

Table Title Page

5-1. Field Types............................................................................................................. 5-10

5-2. Aproximate Data Storage Capacity........................................................................ 5-15

6-1. Interface Commands .............................................................................................. 6-4

7-1. 5026A-S Temperature Calibration Points.............................................................. 7-3

7-2. 5026A-S Relative Humidity Calibration Points..................................................... 7-3

7-3. 5026A-H Temperature Calibration Points ............................................................. 7-4

7-4. 5026A-H Relative Humidity Calibration Points .................................................... 7-4

8-1. Self-Test Error Messages....................................................................................... 8-4

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vi

List of Figures

Figure Title Page

3-1. Front Panel ............................................................................................................. 3-3

3-2. Top Panel ............................................................................................................... 3-4

3-3. Right and Left Side View....................................................................................... 3-5

3-4. Back Panel.............................................................................................................. 3-6

5-1. Main Display.......................................................................................................... 5-3

5-2. Main Menu............................................................................................................. 5-3

5-3. Channel Menu ........................................................................................................ 5-4

5-4. Channel Setting ...................................................................................................... 5-5

5-5. Sensor ID................................................................................................................ 5-5

5-6. Sensor Lock............................................................................................................ 5-6

5-7. Sensor Channel Select............................................................................................ 5-7

5-8. Sensor Cal .............................................................................................................. 5-7

5-9. Display Menu......................................................................................................... 5-8

5-10. Display Setting....................................................................................................... 5-8

5-11. Display Layout ....................................................................................................... 5-9

5-12. Field Data ............................................................................................................... 5-11

5-13. Graph Scale, Select Zone ....................................................................................... 5-12

5-14. Graph Scale ............................................................................................................ 5-12

5-15. Display Reset ......................................................................................................... 5-13

5-16. Data Menu.............................................................................................................. 5-13

5-17. Data Record............................................................................................................ 5-14

5-18. Record Setting........................................................................................................ 5-15

5-19. Data View, Begin Time.......................................................................................... 5-16

5-20. Data View, Numeric Format .................................................................................. 5-16

5-21. Data Print ............................................................................................................... 5-17

5-22. Data Storage........................................................................................................... 5-18

5-23. Data Clear............................................................................................................... 5-18

5-24. Daily Stats .............................................................................................................. 5-19

5-25. Stats Setting............................................................................................................ 5-20

5-26. Stats View .............................................................................................................. 5-20

5-27. Stats Print ............................................................................................................... 5-21

5-28. Stats Reset .............................................................................................................. 5-21

5-29. Stats Clear .............................................................................................................. 5-22

5-30. Data Card ............................................................................................................... 5-22

5-31. File Write ............................................................................................................... 5-23

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5-32. File View................................................................................................................ 5-24

5-33. Alarm...................................................................................................................... 5-25

5-34. Alarm Setting ......................................................................................................... 5-25

5-35. Sensor Alarm.......................................................................................................... 5-26

5-36. System Alarm......................................................................................................... 5-27

5-37. Alarm View............................................................................................................ 5-27

5-38. System Menu.......................................................................................................... 5-28

5-39. System Setting........................................................................................................ 5-28

5-40. Data Time............................................................................................................... 5-29

5-41. Comm Setting......................................................................................................... 5-31

5-42. Serial ...................................................................................................................... 5-31

5-43. IR............................................................................................................................ 5-32

5-44. Password ................................................................................................................ 5-33

5-45. System Info ............................................................................................................ 5-34

6-1. Serial Cable Wiring................................................................................................ 6-3

viii

Chapter 1

Introduction and Specifications

Title Page

Introduction........................................................................................................ 1-3

Symbols Used .................................................................................................... 1-4

Safety Information ............................................................................................. 1-4

Technical Support.............................................................................................. 1-6

Specifications..................................................................................................... 1-7

Environmental Conditions................................................................................. 1-8

5020A ............................................................................................................ 1-8

5026A-H/S..................................................................................................... 1-8

AC Adapter.................................................................................................... 1-8

General to all ................................................................................................. 1-8

1-1

5020A

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1-2

Introduction and Specifications

Introduction 1

Introduction

This manual contains information necessary safely operate the Fluke 5020A Thermo­Hygrometer.

The Fluke 5020A is a low-cost, high-accuracy, digital thermo-hygrometer. Its unique
combination of features makes it suitable for a wide variety of applications from
laboratory to industrial ambient measurement. Features of the thermo-hygrometer
include:

• Two channels measure ambient temperature to ±0.125 °C and %RH to ±1.5%

• Two sensors, each measuring temperature and relative humidity; each is

detachable, cable-extendable, and interchangeable, with self-contained
calibration; each may be assigned a unique 16-character identification

• Display resolution is user selectable up to 0.001 °C and 0.01% RH

• On-board memory holds up to 400,000 time/date-stamped readings

• Removable data card option for additional data storage and ease of data transfer

to and from a PC.

• Visual and audio alarms for various alarm or fault conditions

• May be wall mounted or set on a bench top

• Detachable sensors contain their own calibration data for easy recalibrations

• Optional software logs in real-time or shows graphical/statistical data from data

card (Data card is optional and not needed to run the software for real-time
logging.)

• Password protection of settings

• Large, monochrome LCD, displays temperature and humidity data graphically,

numerically, and statistically; 16 pre-defined, user-changeable screen setups;
display viewable in bright or dim lighting

• Serial RS-232 and IR interface standard

• Power 12 VDC from external 110-240 VAC to DC converter.

• Uses a standard 9 V battery backup to allow continued measuring during power

interruptions.

• Certificate of NIST-traceable temperature and humidity calibration with three

each temperature and humidity points

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Symbols Used

Table 1-1 lists the International Electrical Symbols. Some or all of these symbols may be
used on the instrument or in this manual.

Symbol Description

B
D

M

P

F

Y

X

I

)

CAT

;

Table 1-1. International Electrical Symbols

AC (Alternating Current)

AC-DC

Battery

CE Complies with European Union Directives

DC (Direct Current)

Double Insulated

Electric Shock

Fuse

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Manual (Important Information)

Off

On

Canadian Standards Association

OVERVOLTAGE (Installation) CATEGORY II, Pollution
Degree 2 per IEC1010-1 refers to the level of Impulse
Withstand Voltage protection provided. Equipment of
OVERVOLTAGE CATEGORY II is energy-consuming
equipment to be supplied from the fixed installation. Examples
include household, office, and laboratory appliances.

C-TIC Australian EMC Mark

1-4

Safety Information

Use this instrument only as specified in this manual. Otherwise, the protection provided
by the instrument may be impaired.

The following definitions apply to the terms “Warning” and “Caution”.

• “Warning” identifies conditions and actions that may pose hazards to the user.

• “Caution” identifies conditions and actions that may damage the instrument

being used.

Warnings

To avoid personal injury, follow these guidelines.

• DO NOT use this unit in environments other than those

listed in the User's Manual.

• Follow all safety guidelines listed in the User's Manual.

• Calibration equipment should only be used by trained

personnel.

Introduction and Specifications

Safety Information 1

• The AC adapter can present safety concerns if misused

or damaged. To avoid the risk of electric shock or fire,
do not use the AC adapter outdoors or in a dusty, dirty,
or wet environment. If the cord, case, or plug of the
adapter is damaged in any way, discontinue its use
immediately and have it replaced.

• Never disassemble the AC adapter. Use only the AC

adapter provided with the instrument or equivalent
adapter recommended by the manufacturer of this
instrument.

• The AC adapter has circuits with high voltage inside that

could present danger of electrical shock or fire if
exposed. If the AC adapter is damaged in any way or
becomes hot, discontinue its use immediately,
disconnect it from any AC supply, and have it replaced.
Do not attempt to open, repair, or continue using a
damaged or defective AC adapter.

• The instrument battery can present danger if not handled

properly. To avoid the risk of exposure to dangerous
substances or explosion, immediately remove the
battery and discontinue use if it leaks or becomes
damaged. Never allow the battery to be shorted, heated,
punctured, or dropped. If the instrument is physically
damaged, immediately remove the battery to insure that
it does not become shorted. While removed from the
instrument, store the battery in a location so that it will
not come into contact with metal or fluids that might
short circuit the battery and where it is safe from
excessive temperatures.

• Used batteries must be disposed of properly. Check your

local regulations for additional information. Never
dispose of batteries in fire which may result in explosion
with the possibility of personal injury or property
damage.

Cautions

• If the instrument is dropped, struck, or handled in a way

that causes internal or external physical damage,
immediately unplug the AC adapter, remove the battery,
discontinue use, and contact an Authorized Service
Center. Do not attempt to disassemble or repair the
instrument, battery, or AC adapter. Refer repairs or
replacement components to an Authorized Service
Center.

• The instrument and sensors are sensitive and can be

easily damaged. Always handle these devices with care.
DO NOT allow them to be dropped, struck, stressed, or
overheated.

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5020A

Users Manual

Sensors are fragile devices which can be damaged by

•

mechanical shock, overheating, and exposure to fluids.
Damage may not be visibly apparent but can cause drift,
instability, and loss of accuracy. Observe the following
precautions:

• DO NOT allow sensors to be dropped, struck, or

stressed.

• DO NOT overheat sensors beyond their recommended

temperature range.

• Keep the sensors clean and away from fluids and dust.

Technical Support

Contact Fluke if you need technical support. When calling, please have the following
information ready:

• Model: 5020A

• Serial Number

• Voltage

• Complete description of the problem

To call, using one of the following phone numbers:

USA: 1-888-99-FLUKE
Canada: 1-800-36-FLUKE
Europe: [phone]
Japan: [phone]
Singapore: [phone]
Anywhere in the world: [phone]

Or, visit Fluke’s Web site at www.fluke.com

.

1-6

Introduction and Specifications

Specifications 1

Specifications

Temperature Range 0 °C to 50 °C

Temperature Accuracy

(“H” Model)

Temperature Accuracy

(“S” Model)

Delta Temperature Accuracy ±0.025 °C for ±1 °C changes within 15 °C to 35 °C

Temperature Display Resolution User selectable up to 0.001 °C (0.0 1°C recorded)

RH Range 0% to 100% RH

RH Accuracy
(“H” Model)

RH Accuracy
(“S” Model)

Delta Humidity Accuracy ±1.0% for ±5% changes within 20% to 70% RH

RH Display Resolution User selectable up to 0.01% (0.1% recorded)

Inputs Two sensors, each measuring temperature and relative

16 °C to 24 °C: ±0.125 °C (calibrated)

0 °C to 16 °C, 24 °C to 50 °C: ±0.5 °C (uncalibrated
typical)

15 °C to 35 °C: ±0.25 °C (calibrated)

0 °C to 15 °C, 35 °C to 50 °C: ±0.5 °C (uncalibrated
typical)

20% to 70% RH: ±1.5% RH (calibrated)

0% to 20% RH, 70% to 100% RH: ±3% RH
(uncalibrated, typical)

20% to 70% RH: ±2% RH (calibrated)

0% to 20% RH, 70% to 100% RH: ±3% RH
(uncalibrated, typical)

humidity; each is detachable, cable-extendable, and
interchangeable, with self-contained calibration; each
may be assigned a unique 16-character identification

Display 240 x 128 graphics monochrome LCD, displays

temperature and humidity data graphically, numerically,
and statistically; 16 pre-defined, user-changeable screen
set-ups are included

Memory 400,000 typical individual time-stamped readings

(excluding data card storage)

Alarms Visual and audio alarms for temperature, temperature

rate, RH, RH rate, and fault conditions

Communications RS-232 and IR

Data Card Interface Removable data card for transferring data to a computer;

data can likewise be uploaded from a data card into the
5020A for graphical and statistical display

Enclosure The 5020A may be wall-mounted (hardware included) or

set on a benchtop

Power 12 V DC from external 100-240 VAC power supply

Battery Backup Standard 9V battery to allow continued measuring during

power disruptions

Operating Range 0 °C to 50 °C

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5020A

Users Manual

Size (5020A) 125 mm Hx 211 mm W x 51 mm D(4.9 in x 8.3 in x 2.0

in)

Size (Probes) 79 mm H x 19 mm dia. (3.1 in H x 0.75 in)

Weight 0.7 kg (1.5 lb.)

Calibration Certificate of NIST-traceable temperature and humidity

calibration included; supplied data includes three each
temperature and humidity points

Environmental Conditions

Although the instrument has been designed for optimum durability and trouble-free
operation, it must be handled with care. The instrument should not be operated in an
excessively dusty, dirty, or wet environment. Maintenance and cleaning
recommendations can be found in the Maintenance section of this manual.

For full accuracy, operate the instrument within the calibrated temperature and relative
humidity range of the sensors.

5020A

Operating Temperature: 0 °C to 50 °C (32°F to 122°F)

Relative Humidity: 0% to 70% RH

5026A-H/S

Operating Temperature: 0 °C to 50 °C (32°F to 122°F)

Relative Humidity: 0% to 100% RH

AC Adapter

Operating Temperature: 0 °C to 40 °C (32°F to 104°F)

Relative Humidity: 5% to 90% non-condensing de-rating from 40 °C linearly to 50% at
70 °C

General to all

Pressure: 75 kPa-106 kPa

Vibration should be minimized

Altitude less than 2,000 meters

Indoor use only

1-8

Chapter 2

Quick Start

Title Page

Introduction........................................................................................................ 2-3

Unpacking.......................................................................................................... 2-3

Use Proper Care................................................................................................. 2-3

Learn About the Features and Components....................................................... 2-3

Install the Battery............................................................................................... 2-3

Connect the Sensor ............................................................................................ 2-3

Connect the Power Source................................................................................. 2-4

Switch the Power On ......................................................................................... 2-4

Measure Temperature ........................................................................................ 2-4

2-1

5020A

Users Manual

2-2

Quick Start

Introduction 2

Introduction

This section briefly explains the basics of setting up and operating your thermo­hygrometer.

Unpacking

Carefully unpack the thermo-hygrometer and inspect the instrument to make sure all
components are present and in satisfactory condition. Verify that the following items are
present:

• 5020A Thermo-Hygrometer

• AC adapter and power cord

• Serial cable

• Getting Started Manual

• CD-ROM with complete Users Manual

• Report of calibration

• Wall mount bracket

• Sensor

• 9V battery

If all items are not present, call your Fluke Authorized Service Center.

Use Proper Care

First and most important is to understand the safety issues related to the thermo­hygrometer. Carefully read Safety Information.

The thermo-hygrometer and sensors used with it are sensitive instruments that can be
easily damaged. Always handle these devices with care. DO NOT allow them to be
dropped, struck, stressed, or over-heated.

Learn About the Features and Components

Familiarize yourself with the features and accessories of the thermo-hygrometer by
reading Parts and Controls.

Install the Battery

To maintain uninterrupted measurement when power outages occur, you must install the
included battery into the rear battery compartment. A standard 9V alkaline battery
(NEDA 1604A or IEC 6LR61) is recommended. With a fresh alkaline battery installed,
the thermo-hygrometer will continue to measure and record temperature and relative
humidity during a power outage for up to 16 hours, typically. However, without external
power, the display will be inoperable.

Connect the Sensor

The sensor for channel 1 connects to the socket at the top-right, and the sensor for
channel 2, if used, connects to the socket on the right side. Either sensor may be used
with an optional extension cable up to 100 feet (30 meters) in length.

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Connect the Power Source

The thermo-hygrometer draws power from the provided power adapter. Plug the adapter
into a wall outlet of the appropriate voltage and insert the DC plug into the DC power
input of the thermo-hygrometer.

Switch the Power On

Power is turned on and off with the power switch located below the stand on the back
panel. To switch the power on, toggle the power switch to the
off, toggle the power switch to the
power up, initialize, and begin normal operation. A self-test is performed, displaying the
channel configuration and status of the system, calibration, % battery power, memory,
and buttons. If the thermo-hygrometer calibration has expired and the alert message is
enabled, the user is notified and must press the E button to continue initialization. If an
error message is displayed on power up see Troubleshooting.

Measure Temperature

After initialization, the temperature and relative humidity measurements for the enabled
channels are displayed. If recording is enabled, the measurements will be automatically
stored in memory. The display can be configured to display the measurements in a
variety of numerical and graphical formats. For information on the various modes of
operation of the thermo-hygrometer, see Menu Functions.

position. To switch power

position. The instrument takes a few seconds to

2-4

Chapter 3

Parts and Controls

Title Page

Introduction........................................................................................................ 3-3

Front Panel......................................................................................................... 3-3

Top Panel ........................................................................................................... 3-4

Right Side Panel................................................................................................. 3-4

Left Side Panel................................................................................................... 3-5

Back Panel ......................................................................................................... 3-5

Quick Buttons .................................................................................................... 3-6

Configurations ................................................................................................... 3-6

Accessories ........................................................................................................ 3-6

3-1

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Users Manual

3-2

Parts and Controls

Introduction 3

Introduction

The functions of the various features of the thermo-hygrometer are described below.

Front Panel

The front panel buttons E, A, D, B, C and F are used to select and alter the
functions of the thermo-hygrometer (see Figure 3-1).

Figure 3-1. Front Panel

avu052.tif

The buttons have different functions depending on whether the main screen or the menu
system is displayed.

The functions of each of the buttons from the main screen are as follows:

E - This button is used to display the menu options.
F - This button is used to display the alarm window. With the alarm window displayed

the Exit button can be used to return to the main screen while preserving the alarm events
or the Enter button can be used to clear the alarm events and return to the main screen.

B C - These buttons are used to move among enabled display layouts.

A D- These buttons are used to adjust the display contrast, A for darker and D for

lighter.

The functions of each of the buttons within the menu system are as follows:
E - This button is used to select a menu item, to accept a choice, or save changes to a

parameter.
F - This button is used to return from a menu or window or cancel changes to a

parameter. Pressing the Exit button for a second or so returns from most any menu, menu
function, or window back to the main screen.

A D - These buttons are used to move among menu items or parameters. When editing

some numeric or alpha-numeric parameters, these buttons are used to change a digit or
character.

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B C - These buttons are used to change a value or option when editing a parameter. When
editing some numeric or alpha-numeric parameters, these buttons are used to move
among digits or characters.

IR Port - The infrared window provides a means for communicating with the thermo­hygrometer using infrared serial communications (IR COMM mode) or printing
measurements and daily statistics to a IrDA-compatible printer (IRDA mode).

Top Panel

The top panel contains the port for attaching the sensor for Channel 1. An optional
extension cable may be used to allow the sensor to be placed in a remote location (see
Figure 3-2).

Right Side Panel

The right side panel contains the port for attaching the sensor for Channel 2. An optional
extension cable may be used to allow the sensor to be placed in a remote location (see
Figure 3-3).

Figure 3-2. Top Panel

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Parts and Controls

Left Side Panel 3

Figure 3-3. Right and Left Side View

avu054.tif

Left Side Panel

The left side panel consists of the DC power socket, the RS-232 port and the data card
slot.

12 V DC Power Socket - The DC plug of the AC adapter plugs into the 12V DC

power socket to power the instrument.

RS-232 Port Connector - This socket is for interfacing the thermo-hygrometer to a

computer or terminal using serial RS-232 communications.

Data Card Slot - An optional data card is installed in this slot for additional memory

storage and data transfer with a computer.

Back Panel

The back panel contains the stand, power switch, battery compartment, and product
information, including serial number (see Figure 3-4).

Stand - The stand can be used to prop up the thermo-hygrometer on a flat surface.

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Battery Compartment - The battery compartment holds a 9V alkaline battery used as

a backup power source to maintain continuous measurement during a power outage.

Power Switch - The power switch turns the power on and off to the thermo-

hygrometer, including power from the battery. Before disconnecting the AC adapter from
the instrument, switch the power off to prevent draining the backup battery.

Serial Label - The serial label shows the instrument model and serial number.

Quick Buttons

When the main screen is displayed, the buttons have the following functions:

E- This button is used to display the menu options.
F- This button is used to display the alarm window. With the alarm window displayed

the Exit button can be used to return to the main screen while preserving the alarm events
or the Enter button can be used to clear the alarm events and return to the main screen.

B C - These buttons are used to move among enabled display layouts.

A D - These buttons are used to adjust the display contrast, A for darker and D for

lighter.

Configurations

• Model 5020A-H KIT includes a 5020A-H Thermo-Hygrometer readout, a high

accuracy sensor (Model 5026A-H), a thermo-hygrometer readout wall mount bracket,
power supply (Model 5020A-PS), and an RS-232 cable.

• Model 5020A-S KIT includes a 5020A-S Thermo-Hygrometer readout, a standard

accuracy sensor (Model 5026A-S), a thermo-hygrometer readout wall mount bracket,
power supply (Model 5020A-PS), and an RS-232 cable.

Figure 3-4. Back Panel

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Accessories

The following accessories are available to compliment either the high accuracy or
standard thermo-hygrometer readout.

Parts and Controls

Accessories 3

• Model 5026A-S Spare Sensor/Standard Accuracy

• Model 5027A-S Spare Sensor Kit includes a standard accuracy probe (Model 5026A-

S), sensor case (Model 5026A-CASE), sensor wall mount bracket (Model 5030A­MNT), and 25-foot (7.6 m) extension cable (Model Y5028)

• Model 5026A-H Spare Sensor/High Accuracy

• Model 5027A-H Spare sensor Kit includes a high accuracy sensor (Model 5026A-H),

sensor case (Model 5026A-CASE), sensor wall mount bracket (Model 5030A-MNT),
and 25-foot (7.6 m) extension cable (Model Y5028)

• Model 5026A Spare Sensor Protective Case

• Model Y5028 Extension cable, 25-foot (7.6 m)

• Model Y5029 Extension cable, 50-foot (15.2 m)

• Model 5030A-MNT Sensor wall mount bracket

• Model 5032A-64MB data card (PC Card), 64 MB

• Model 5020A-CASE Protective Case (includes space for a 5020A Thermo-

Hygrometer, two sensors, RS-232 cable, and power cord)

• Model 5020A-PS Spare Power Supply, 100-240 VAC to 12 VDC

• Model 5020A-LW3 LogWare III, single-PC license

• Model 5020A-LWLIC LogWare III, license (for additional PCs)

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