Fluke 2031A Bedienungsanleitung

2031A

Quick Stick

User’s Guide

Rev. 841501

Hart Scientific

Rev. 841501

Fluke Corporation, Hart Scientific Division

799 E. Utah Valley Drive • American Fork, UT 84003-9775 • USA

Phone: +1.801.763.1600 • Telefax: +1.801.763.1010

E-mail: [email protected]

www.hartscientific.com

Table of Contents

1 Before You Start . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.1 Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

1.2.2 Cautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

1.3 Authorized Service Centers. . . . . . . . . . . . . . . . . . . . . . 3

2 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

3 Parts and Features . . . . . . . . . . . . . . . . . . . . . . . . . 7

4 Freezing Process . . . . . . . . . . . . . . . . . . . . . . . . . . 9

5 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . 13

1 Before You Start

1.1 Symbols Used

Table 1 lists the International Electrical Symbols. Some or all of these symbols

may be used on the instrument or in this manual.

Symbol Description

AC (Alternating Current)

AC-DC

Battery

CE Complies with European Union Directives

Double Insulated

Electric Shock

Fuse

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Manual (Important Information)

Off

1 Before You Start

Symbols Used

Table 1 International Electrical Symbols

Symbol Description

Canadian Standards Association

OVERVOLTAGE (Installation) CATEGORY II, Pollution Degree 2 per IEC1010-1 re-

fers 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

The European Waste Electrical and Electronic Equipment (WEEE) Directive

(2002/96/EC) mark.

1.2 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 instru-

ment being used.

1.2.1 Warnings

To avoid personal injury, follow these guidelines.

•EXTREMELY COLD TEMPERATURES PRESENT in this equip-

ment.

•FREEZER BURNS AND FROSTBITE may result if personnel fail to

observe safety precautions.

•The dry ice is extremely cold. Wear gloves to protect against freezer burn

or frostbite when handling the dry ice.

•The dry ice does produce carbon dioxide gas. Only use the dry ice in a

well ventilated area.

•DO NOT use this unit for any application other than freezing the mantle

of a triple point of water cell.

•Always wear protective eyewear when crushing the dry ice.

•Use caution when adding the dry ice to the cup containing alcohol to pre-

vent splashing of the alcohol.

•Always build the mantle in a prechilled cell.

•Follow the directions concerning building the ice ball on the end of the

tube before inserting it in the cell. If this process is not followed, the wa-

2031A Quick Stick

User’s Guide

ter can become super cooled without forming a mantle. Any movement of

the super cooled water will cause a chain reaction within the cell forming

an icy slush rather than building a mantle. If this occurs, the cell must be

melted and re-chilled before building a new mantle.

•Follow all safety guidelines listed in the user’s manual.

•Only trained personnel should use calibration equipment.

1.2.2 Cautions

To avoid possible damage to the instrument, follow these guidelines.

•The 2031A Quick Stick is a precision instrument. Although it has been

designed for optimum durability and trouble free operation, it must be

handled with care. After use, the plastic outer covering is very brittle.

Keep the Quick Stick in an upright supported position until it warms up to

prevent fracture from impact.

•DO NOT drop the Quick Stick. The stem could bend and may result in re-

frigerant loss.

•The Quick Stick is a relatively heavy instrument. Use the Hart model

2031-STND or other support system to prevent accidental tipping and

damage of the Quick Stick and the TPW cell. The cell and Quick Stick

must be supported separately.

1.3 Authorized Service Centers

Please contact one of the following authorized Service Centers to coordinate

service on your Hart product:

Fluke Corporation, Hart Scientific Division

799 E. Utah Valley Drive

American Fork, UT 84003-9775

USA

Phone: +1.801.763.1600

Telefax: +1.801.763.1010

E-mail: [email protected]

Fluke Nederland B.V.

Customer Support Services

Science Park Eindhoven 5108

5692 EC Son

NETHERLANDS

1 Before You Start

Authorized Service Centers

Phone: +31-402-675300

Telefax: +31-402-675321

E-mail: [email protected]

Fluke Int'l Corporation

Service Center - Instrimpex

Room 2301 Sciteck Tower

22 Jianguomenwai Dajie

Chao Yang District

Beijing 100004, PRC

CHINA

Phone: +86-10-6-512-3436

Telefax: +86-10-6-512-3437

E-mail: [email protected]

Fluke South East Asia Pte Ltd.

Fluke ASEAN Regional Office

Service Center

60 Alexandra Terrace #03-16

The Comtech (Lobby D)

118502

SINGAPORE

Phone: +65 6799-5588

Telefax: +65 6799-5588

E-mail: [email protected]

When contacting these Service Centers for support, please have the following

information available:

•Model Number

•Serial Number

•Complete description of the problem

2031A Quick Stick

User’s Guide

2 Introduction

The 2031A Quick Stick heat pipe operates on a continuous, closed loop

two-phase cycle. The heat from TPW cell boils the refrigerant, causing a cool-

ing effect within the evaporator portion of the tubing. The refrigerant travels

upward to the condenser as a vapor. The dry ice/alcohol mixture cools the va-

por and condenses it back to a liquid. The refrigerant travels back down the

walls of the tube to the bottom where cycle begins again. In this way, the Quick

Stick draws the heat out of the water in the TPW cell until an ice mantle is

frozen around the reentrant tube.

2 Introduction

3 Parts and Features

The Quick Stick includes all necessary items needed for forming a mantle in a

TPW cell.

•The double wall insulated stainless steel cup holds enough dry ice for

freezing a good mantle. A plastic cap and plastic insulating outer cover

enclose the cup.

•The Quick Stick is of adequate length for generally available cells.

•The large diameter evaporator allows for faster freezing.

•The centering bushing centers the evaporator inside the reentrant well.

•A copper end plug provides heat transfer to the bottom of the Quick Stick.

•The removable heat pipe, from the cup, provides for ease of cleaning.

•The heat sink helps to prevent ice bridging.

•The stand, Hart model 2031-STND is used to support the Quick Stick and

TPW cell during the mantle creation process.

If all items are not present, contact a Hart Scientific Authorized Service Center

(see Section 1.3).

The Quick Stick (Figure 1 on page 8) consists of an insulated cup at the top for

containing the coolant and the heat pipe itself. The heat pipe has a condenser at

the top (the larger diameter portion) and an evaporator that is the bottom por-

tion that inserts into the cell. A thin wall stainless steel (5/16 inch) diameter

tube forms the evaporator, which is capped at the bottom with a copper plug to

facilitate heat transfer to the bottom of the cell. A wick located inside the tub-

ing facilitates the flow of refrigerant. The refrigerant inside the heat pipe is a

non-CFC. A centering bushing can be used to center the evaporator portion

within the reentrant well of the TPW cell. A stem insulator below the cup insu-

lates the portion of the evaporator that is not inside the cell. The stem insulator

may be adjusted to fit a particular cell by cutting it to a new length. For some

cells, you may need to remove it entirely.

3 Parts and Features

2031A Quick Stick

User’s Guide

Cap

Cup Insulator

Double Wall Cup

Fitting

Stem Insulator

Evaporator

Copper Tip

Condenser

Figure 1 Quick Stick Features

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