Fluke 6102 Operating Manual

6102

Micro-Bath

User’s Guide

PN 3729224

January 2013

© 2013 Fluke Corporation. All rights reserved. Specifications are subject to change without notice. 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	Fluke Europe B.V.
P.O. Box 9090	P.O. Box 1186
Everett, WA 98206-9090	5602 BD Eindhoven
U.S.A.	The Netherlands

11/99

To register your product online, visit register.fluke.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 ..........................................................................................................	4
1.3	Authorized Service Centers .....................................................................		5

2	Introduction .............................................................................		7
3	Specifications and Environmental Conditions......................		9
	3.1	Specifications ...........................................................................................	9
	3.2	Environmental Conditions .........................................................................	9
4	Quick Start..............................................................................		11
	4.1	Unpacking ..............................................................................................	11
	4.2	Setup ......................................................................................................	11
	4.3	Power .....................................................................................................	12
	4.4	Setting the Temperature .........................................................................	12
5	Installation .............................................................................		13
	5.1	Bath Environment ...................................................................................	13
	5.2	“Dry-out” Period .....................................................................................	13
	5.3	Bath Preparation and Filling ...................................................................	13
	5.4	Power .....................................................................................................	14
6	Bath Use .................................................................................		15
	6.1	General ..................................................................................................	15
	6.2	Comparison Calibration .........................................................................	15
	6.3	Calibration of Multiple Probes.................................................................	16
7	Parts and Controls ................................................................		17
	7.1	Back and Bottom Panel ..........................................................................	17
	7.2	Front Panel..............................................................................................	18
	7.3	Accessories ...........................................................................................	19
	7.3.1 Transport/Pour Lid ........................................................................................		19

iii

	7.3.2		Access Cover (Optional) ..............................................................................		19
	7.3.3		Probe Basket ................................................................................................		19
	7.3.4		Stir Bar ..........................................................................................................		20
	7.3.5		Tank Extender (Optional) ..............................................................................		20
8	General Operation..................................................................				21
	8.1	Switching to 230V Operation ..................................................................			21
	8.2	Bath Fluid ...............................................................................................			21
	8.2.1		Temperature Range.......................................................................................		21
	8.2.2		Viscosity ........................................................................................................		22
	8.2.3		Specific Heat.................................................................................................		22
	8.2.4		Thermal Conductivity ....................................................................................		22
	8.2.5		Thermal Expansion........................................................................................		22
	8.2.6		Electrical Resistivity.......................................................................................		22
	8.2.7		Fluid Lifetime .................................................................................................		23
	8.2.8		Safety ............................................................................................................		23
	8.2.9		Cost ...............................................................................................................		23
	8.2.10		Commonly Used Fluids .................................................................................		23
		8.2.10.1		Water (Distilled) ...................................................................................................	24
		8.2.10.2		Mineral Oil ............................................................................................................	24
		8.2.10.3 Silicone Oil (Dow Corning 200.10, 200.20) ..........................................................			24
	8.2.11		Fluid Characteristics Charts..........................................................................		24
		8.2.11.1		Limitations and Disclaimer ..................................................................................	25
		8.2.11.2		About the Graph ..................................................................................................	26
	8.3	Stirring		....................................................................................................	27
	8.4	Power ......................................................................................................			28
	8.5	Heater .....................................................................................................			28
	8.6	Fluid Drain...............................................................................................			28
	8.7	Temperature ..........................................................................Controller			28
9	Controller ..............................................................Operation				31
	9.1	Well Temperature ...................................................................................			31
	9.2	Temperature ...........................................................................Set-point			31
	9.2.1		Programmable ............................................................................Set-points		31
	9.2.2		Set- .............................................................................................point Value		33
	9.2.3		Temperature ..............................................................................Scale Units		33
	9.3	Scan .......................................................................................................			34
	9.3.1		Scan .................................................................................................Control		34
	9.3.2		Scan .....................................................................................................Rate		34
	9.4	Temperature .....................................................................Display Hold			35

iv

9.4.1		Hold Temperature Display	............................................................................35
9.4.2		Mode Setting ................................................................................................	35
9.4.3		Switch Wiring ................................................................................................	36
9.4.4		Switch Test Example ....................................................................................	36
9.5	Secondary Menu ....................................................................................		36
9.6	Heater Power ..........................................................................................		37
9.7	Proportional Band ..................................................................................		37
9.8	Cutout ....................................................................................................		38
9.9	Controller Configuration..........................................................................		39
9.10 Operating Parameters ............................................................................			39
9.10.1		Stir Speed......................................................................................................	39
9.10.2		High Limit .....................................................................................................	40
9.10.3		Cutout Reset Mode .......................................................................................	40
9.11	Serial Interface Parameters ...................................................................		41
9.11.1		BAUD Rate ....................................................................................................	41
9.11.2		Sample Period...............................................................................................	41
9.11.3		Duplex Mode.................................................................................................	42
9.11.4		Linefeed .......................................................................................................	42
9.12	Calibration Parameters ...........................................................................		43
9.12.1		R0 .................................................................................................................	43
9.12.2		ALPHA ..........................................................................................................	43
9.12.3		DELTA ...........................................................................................................	43
9.12.4		C0 and CG ....................................................................................................	44
9.12.5		rCAL ..............................................................................................................	44

10 Digital Communication Interface..........................................			45
10.1 Serial Communications ..........................................................................			45
10.1.1	Wiring ...........................................................................................................		45
10.1.2	Setup ............................................................................................................		45
10.1.2.1		Baud Rate ...........................................................................................................	46
10.1.2.2		Sample Period ......................................................................................................	46
10.1.2.3		Duplex Mode ........................................................................................................	46
10.1.2.4		Linefeed................................................................................................................	46
10.1.3	Serial Operation ............................................................................................		46
10.2 Interface Commands ..............................................................................			47

11 Test Probe Calibration ...........................................................		49
11.1	Calibrating a Single Probe .....................................................................	49
11.2	Stabilization and Accuracy ....................................................................	49

v

11.3 Multiple Probe Calibration .....................................................................

49

12	Calibration Procedure ...........................................................		51
12.1		Calibration Points ...................................................................................	51
12.2		Calibration Procedure ............................................................................	51
	12.2.1 Compute DELTA ...........................................................................................		52
	12.2.2 Compute R0 & ALPHA ..................................................................................		52
	12.2.3 Accuracy & Repeatability .............................................................................		53
13	Maintenance ...........................................................................		55
14	Troubleshooting .....................................................................		57
14.1		Troubleshooting Problems, Possible Causes, and Solutions .................	57
14.2		CE Comments.........................................................................................	58
	14.2.1 EMC Directive ...............................................................................................		58
	14.2.2 Low Voltage Directive (Safety) ......................................................................		58

vi

Tables
Table 1 International Electrical Symbols ...........................................................		1
Table 2 Specifications .......................................................................................		9
Table 3	Table of Various Bath Fluids ...............................................................	25
Table 4	Nominal Stirrer Motor Settings With Different Liquids ........................	28
Table 5	Controller Communications Commands .............................................	48

vii

Figures
Figure 1 6102		Back Panel and Bottom ............................................................	17
Figure 2 6102		Front Panel................................................................................	18
Figure 3 Bath Lids and Lid Parts .....................................................................			19
Figure 4 Probe Basket .....................................................................................			20
Figure 5 Stir Bar ...............................................................................................			20
Figure 6	Chart of Various Bath Fluids .............................................................		26
Figure 7	Controller Operation Flowchart .........................................................		32
Figure 8	Serial Cable Wiring ...........................................................................		45

viii

Before You Start

Symbols Used

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.

Table 1 International Electrical Symbols

Symbol Description

AC (Alternating Current)

AC-DC

Battery

CE

DC

Double Insulated

Electric Shock

Fuse

PE Ground

Hot Surface (Burn Hazard)

Read the User’s Guide (Important Information)

Off

On

Canadian Standards Association

1

6102 Micro-Bath User’s Guide

Safety Information

Symbol Description

C-TICK Australian EMC mark

The European Waste Electrical and Electronic Equipment (WEEE) Directive (2002/96/

EC) mark.

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.

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”.

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

L“Caution” identifies conditions and actions that may damage the instrument being used.

1.2.1Warnings

To avoid personal injury, follow these guidelines.

GENERAL

DO NOT use the instrument for any application other than calibration work. The instrument was designed for temperature calibration. Any other use of the unit may cause unknown hazards to the user.

DO NOT overfill the bath. Overflowing extremely cold or hot fluid may be harmful to the operator. See Section 5.3, Bath Preparation and Filling, for specific instructions.

DO NOT install access cover without holes onto a bath that is energized. Dangerous pressures may result from fluids vaporizing.

Calibration Equipment should only be used by Trained Personnel.

If this equipment is used in a manner not specified by the manufacturer, the protection provided by the equipment may be impaired.

Before initial use, or after transport, or after storage in humid or semi-humid environments, or anytime the instrument has not been energized for more than 10 days, the instrument needs to be energized for a “dry-out” period of 2 hours before it can be assumed to meet all of the safety requirements of the IEC 61010-1. If the product is wet or has been in a wet environment, take necessary measures to remove moisture prior to applying power such as storage in a low humidity temperature chamber operating at 50°C for 4 hours or more.

2

Before You Start

Safety Information

Overhead clearance is required. Do not place the instrument under a cabinet or other structure. Always leave enough clearance to allow for safe and easy insertion and removal of probes.

The instrument is intended for indoor use only.

DO NOT use the unit in environments other than those listed in the user’s guide. DO NOT carry the unit without the transport lid in place and properly secured.

Thoroughly wipe the inside of the well dry when changing fluids as some high temperature fluids react violently to water or other liquid mediums.

Use of this instrument at HIGH TEMPERATURES for extended periods of time requires caution.

Completely unattended high temperature operation in not recommended.

BURN HAZARD

High temperatures may be present in this equipment. Fires and severe burns may result if personnel fail to observe safety precautions.

DO NOT mix water and oil when exceeding temperatures of 90°C (194°F).

ELECTRICAL HAZARD

These guidelines must be followed to ensure that the safety mechanisms in this instrument will operate properly. This instrument must be plugged into an AC only electric outlet as listed in Section 3.1, Specifications. The power cord of the instrument is equipped with a three-pronged grounding plug for your protection against electrical shock hazards. It must be plugged directly into a properly grounded three-prong receptacle. The receptacle must be installed in accordance with local codes and ordinances. DO NOT use an extension cord or adapter plug.

DO use a ground fault interrupt device. This unit contains a liquid. A ground fault device is advised in case liquid is present in the electrical system and could cause an electrical shock.

Always replace the power cord with an approved cord of the correct rating and type. If you have questions, contact an Authorized Service Center (see Section 1.3).

High voltage is used in the operation of this equipment. Severe injury or death may result if personnel fail to observe the safety precautions. Before working inside the equipment, turn off the power and disconnect the power cord.

DO NOT connect this unit to a non-grounded, non-polarized outlet.

Always replace the fuse with one of the same rating, voltage, and type.

3

6102 Micro-Bath User’s Guide

Safety Information

BATH FLUIDS

Fluids used in this unit may produce noxious or toxic fumes under certain circumstances. Consult the fluid manufacturer’s MSDS (Material Safety Data Sheet). Proper ventilation and safety precautions must be observed.

The unit is equipped with a soft cutout (user settable firmware) and a hard cutout. Check the flash point, boiling point, or other fluid characteristic applicable to the circumstances of the unit operation. Ensure that the soft cutout is adjusted to the fluid characteristics of the application. DO NOT exceed the boiling or flash temperatures of the fluid being used.

1.2.2Cautions

DO NOT overfill the bath. Overflowing liquid may damage the electrical system. Be sure to allow for thermal expansion of the fluid as the bath temperature increases. See Section 5.3, Bath Preparation and Filling, for specific instructions.

Read Section 6, Bath Use, before placing the unit into service.

DO NOT change the values of the bath calibration constants from the factory set values. The correct setting of these parameters is important to the safety and proper operation of the unit.

The Factory Reset Sequence should be performed only by authorized personnel if no other action is successful in correcting a malfunction. You must have a copy of the most recent Report of Test to restore the test parameters.

Most probes have handle temperature limits. Be sure that the probe handle temperature limit is not exceeded in the air above the instrument.

The instrument and any thermometer probes 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 overheated.

Operate the instrument in room temperatures as listed in Section 3.2, Environmental Conditions. Allow sufficient air circulation by leaving at least 6 inches of space between the instrument and nearby objects.

Overhead clearance needs to allow for safe and easy insertion and removal of probes for calibration.

Use only clean fluid with the instrument.

The Micro-Bath is a precision instrument. Although it has been designed for optimum durability and trouble free operation, it must be handled with care. Always carry the unit in an upright position to prevent the liquid from spilling out. The convenient fold-up handle allows one hand carrying. The instrument should not be operated in excessively wet, oily, dusty, or dirty environments. It is important to keep the well of the instrument clean and clear of any foreign matter. Do not operate near flammable materials.

4

Before You Start

Authorized Service Centers

If a mains supply power fluctuation occurs, immediately turn off the instrument. Power bumps from brown-outs and black-outs could damage the instrument. Wait until the power has stabilized before re-energizing the instrument.

Components and heater lifetime can be shortened by continuous high temperature operation.

DO NOT operate the instrument without fluid.

The input voltage and heater voltage switch settings must always be set to the same value.

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: [phone]

Telefax: +1.801.763.1010

E-mail: support@hartscientific.com

Fluke Nederland B.V.

Customer Support Services

Science Park Eindhoven 5108

5692 EC Son

NETHERLANDS

Phone: [phone]

Telefax: [phone]

E-mail: ServiceDesk@fluke.nl

5

6102 Micro-Bath User’s Guide

Authorized Service Centers

Fluke Int’l Corporation

Service Center - Instrimpex

Room 2301 Sciteck Tower

22 Jianguomenwai Dajie

Chao Yang District

Beijing 100004, PRC

CHINA

Phone: [phone]

Telefax: [phone]

E-mail: xingye.han@fluke.com.cn

Fluke South East Asia Pte Ltd.

Fluke ASEAN Regional Office Service Center

60 Alexandra Terrace #03-16 The Comtech (Lobby D) 118502

SINGAPORE

Phone: [phone]

Telefax: [phone]

E-mail: anthony.ng@fluke.com

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

LModel Number

LSerial Number

LVoltage

LComplete description of the problem

6

Introduction

2 Introduction

The Hart Scientific 6102 Micro-Bath may be used as a portable instrument or bench top temperature calibrator for calibrating thermocouple and RTD temperature probes. The 6102 is small enough to use in the field, and accurate enough to use in the lab. Calibrations may be done over a range of 35°C to 200°C (95°F to 392°F). The resolution of the 6102 temperature display is 0.01 degrees.

The Micro-Bath calibrator features:

LConvenient handle

LRS-232 interface

LSwitchable AC Input (115 VAC or 230 VAC) Built in programmable features include:

LTemperature scan rate control

LTemperature switch hold

LEight Set-point memory

LAdjustable readout in °C or °F

The temperature is accurately controlled by Hart’s digital controller. The controller uses a precision platinum RTD as a sensor and controls the well temperature with a solid state relay (triac) driven heater.

The LED front panel continuously shows the current well temperature. The temperature may be easily set with the control buttons to any desired temperature within the specified range. The calibrator’s multiple fault protection devices insure user and instrument safety and protection.

The 6102 Micro-Bath was designed for portability, low cost, and ease of operation. Through proper use, the instrument will continuously provide accurate calibration of temperature sensors and devices. The user should be familiar with the safety guidelines and operating procedures of the calibrator as described in the instruction manual.

7

Specifications and Environmental Conditions

Specifications

3 Specifications and Environmental Conditions

3.1 Specifications

The 6102 may not meet the specification published if a different fluid is used other than distilled water or Dow Corning (200.10, 200.20) oil.

Do not exceed the boiling point or flash point temperatures of the fluid. To ensure that the boiling and flash point temperatures are not exceeded adjust the High Limit and Cutout parameters. To set these parameters, refer to Section 9, Controller Operation.

Table 2 Specifications

Range	35 to 200°C (95 to 392°F)
Accuracy	±0.25°C
Stability	±0.02°C at 100°C
	±0.03°C at 200°C
Uniformity	±0.02°C
Resolution	0.01°C/F
Operating Temperature	5 to 45°C (41 to 113°F)
Heating Time	25°C to 200°C: 40 minutes
Cooling Time	200°C to 100°C: 35 minutes
Well Size	1.9" dia. x 5.5" deep (48 x 139 mm)
Size	5.5" W x 10.38" H x 8" D (14 x 26 x 20 cm)
Weight	10 lb. (4.5 kg) with fluid
Power	115 VAC (±10%), 12.3 A, or 230 VAC (±10%), 1.1 A, switchable, 50/60 Hz,
	270 W
System Fuse	115 V: 250 V, 3A, F
	230 V: 250 V, 1.6A, F
Safety	Overvoltage (Installation) Category II, Pollution Degree 2 per IEC 61010-01

3.2 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 or dirty environment. Maintenance and cleaning recommendations can be found in the Maintenance Section of this manual.

The instrument operates safely under the following conditions:

Lambient temperature range: 5 – 45°C (41 – 113°F)

Lambient relative humidity: maximum 80% for temperature <31°C, decreasing linearly to 50% at 40°C

Lmains voltage within ± 10% of nominal

Lvibrations in the calibration environment should be minimized

Laltitudes less than 2,000 meters

9

Quick Start

Unpacking

4 Quick Start

Caution: READ SECTION 6 ENTITLED BATH USE before placing the bath in service. Incorrect handling can damage the bath and void the warranty.

4.1 Unpacking

Unpack the Micro-Bath carefully and inspect it for any damage that may have occurred during shipment. If there is shipping damage, notify the carrier immediately.

Verify that the following components are present:

L6102 Micro-Bath

LTransport/Pour Lid

LProbe Basket

LStir Bar

LPower Cord

LUser’s Guide

LReport of Calibration

LCalibration Label

LRS-232 Cable

L9930 Interface-it Software

LAccess Cover (optional)

LExtender, perf-cage, wrench (optional)

4.2Setup

Place the calibrator on a flat surface with at least 6 inches of free space around the instrument. Plug the power cord into a grounded mains outlet. Observe that the nominal voltage corresponds to that indicated on the back of the calibrator.

Carefully insert the probe basket into the tank. Fill the tank with the appropriate fluid. The set-point temperature and the number of and size of probes determine the fluid level. Be sure to keep the fluid level an adequate distance below the top of the well to prevent overflowing the fluid when the probes are inserted. For example, placing 200.20 oil at room temperature (25°C) into the bath and heating the unit to 200°C, causes a 1-inch (2.54 cm) expansion of the fluid inside the well.

Keep the fluid level at least 0.64 cm (0.25 inches) below the top of the probe basket at all times. With the probe (probes) in the tank fill the tank 3/4 full. Heat to the maximum temperature of the fluid. Slowly fill the well to 1.3 cm (.5 inch) below the top of the probe basket at the maximum temperature of the fluid.

11

6102 Micro-Bath User’s Guide

Power

Turn on the power to the calibrator by toggling the switch on the power entry module. The fan should begin blowing air through the instrument and the controller display should illuminate after 3 seconds. After a brief self test the controller should begin normal operation. If the unit fails to operate please check the power connection.

The display will begin to show the fluid temperature and the tank heater will start operating to bring the temperature of the fluid to the set-point temperature. Insure that the fluid is being stirred.

4.3 Power

Plug the Micro-Bath power cord into a mains outlet of the proper voltage, frequency, and current capability. Refer to Section 3.1, Specifications, for power details. Turn the bath on using the rear panel “POWER” switch. The Micro-Bath will turn on and begin to heat to the previously programmed temperature set-point. The front panel LED display will indicate the actual bath temperature.

4.4 Setting the Temperature

Section 9.2 explains in detail how to set the temperature set-point on the calibrator using the front panel keys. The procedure is summarized here.

1.Press “SET” twice to access the set-point value.

2.Press “UP” or “DOWN” to change the set-point value.

3.Press “SET” to store the new set-point.

4.Press and hold “EXIT” to return to the temperature display.

When the set-point temperature is changed the controller switches the tank heater on or off to raise or lower the temperature. The displayed temperature gradually changes until it reaches the set-point temperature. The 6102 may require 25 minutes to reach the set-point depending on the span. Another 10 to 15 minutes is required to stabilize within ±0.03°C of the set-point. Ultimate stability may take 20 to 30 minutes more of stabilization time.

12