ThermoWorks 271-401 User Manual

3101

DRY-BLOCK

HEAT/COOL SOURCE

USER MANUAL

Please read this manual before switching the unit on

IMPORTANT safety information inside

TABLE OF CONTENTS

1 INTRODUCTION 1

2 SAFETY 2

3 OPERATION 3

3.1 Parts and Controls 3

3.1.1 AC Power 3

3.1.2 Power Switch 3

3.1.3 Fan 3

3.1.4 Stand 3

3.1.5 Dry-Block 3

3.1.6 Temperature Controller 3

3.2 Operation 4

3.2.1 Dry-Block Set-Up 4

3.2.2 Temperature Setting 4

3.2.3 Probe Testing 4

3.2.4 Display Units 5

4 MAINTENANCE 6

4.1 Care of the 3101 Units 6

4.2 Warranty 6

5 SPECIFICATIONS 7

1 INTRODUCTION

The 3101 dry-block heating and cooling sources allow users to
check the accuracy of thermometers and sensors as a system,
on site, without the need for heavy, expensive equipment. The
dry-blocks are high accuracy portable temperature sources
that are extremely easy to use. Simply plug in, switch on and
set the dry-block to the temperature that you wish to check,
insert your probe into the well and take the reading. Compare
the temperature reading of your thermometer and probe to the
displayed temperature of the dry-block and the difference is
the error of your instrument. For optimum accuracy and NIST
traceability use a reference thermometer to make comparison
measurements.

The 3101 dry-blocks are controlled by a closed loop
microprocessor based digital PID temperature controller
system incorporating a combination heater/cooler and a
precision platinum RTD sensor housed in the aluminum block.
Fan cooling allows rapid changes in block temperature upon
demand. The required temperature may be adjusted in 0.1°
increments across the range of the instrument using the
buttons on the front panel.

These units are ideal for use in a variety of industrial and
process applications. Each unit is supplied with a traceable

certicate of calibration showing actual test data, which can

be used as part of quality assurance programs.

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