Fluke 1502A User Manual

0 (0)

Hart Scientific

1502A

Thermometer Readout User’s Guide

Rev. 722101 ENG

Limited Warranty & Limitation of Liability

Each product from Fluke Corporation, Hart Scientific Division ("Hart") is warranted to be free from defects in material and workmanship under normal use and service. The warranty period is three years for the Thermometer Readout. The warranty period begins on the date of the shipment. Parts, product repairs, and services are warranted for 90 days. The warranty extends only to the original buyer or end-user customer of a Hart authorized reseller, and does not apply to fuses, disposable batteries or to any other product which, in Hart's opinion, has been misused, altered, neglected, or damaged by accident or abnormal conditions of operation or handling. Hart 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. Hart does not warrant that software will be error free or operate without interruption. Hart does not warrant calibrations on the Thermometer Readout.

Hart 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 Hart. Warranty support is available if product is purchased through a Hart authorized sales outlet or Buyer has paid the applicable international price. Hart reserves the right to invoice Buyer for importation costs of repairs/replacement parts when product purchased in one country is submitted for repair in another country.

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

To obtain warranty service, contact your nearest Hart authorized service center or send the product, with a description of the difficulty, postage, and insurance prepaid (FOB Destination), to the nearest Hart authorized service center. Hart assumes no risk for damage in transit. Following warranty repair, the product will be returned to Buyer, transportation prepaid (FOB Destination). If Hart determines that the failure was caused by misuse, alteration, accident or abnormal condition or operation or handling, Hart will provide an estimate or 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. HART SHALL NOT BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL. OR CONSEQUENTIAL DAMAGES OR LOSSES, INCLUDING LOSS OF DATA, WHETHER ARISING FROM BREACH OF WARRANTY OR BASED ON CONTRACT, TORT, RELIANCE OR ANY OTHER 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 of competent jurisdiction, such holding will not affect the validity or enforceability of any other provision.

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: support@hartscientific.com

www.hartscientific.com

Subject to change without notice. • Copyright © 2005 • Printed in USA

Rev. 722101

Table of Contents

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

1.1

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

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

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

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

1.3Authorized Service Centers. . . . . . . . . . . . . . . . . . . . . . 4

2Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3Specifications and Environmental Conditions . . . . . . . . . . 9

3.1Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

3.2

Environmental Conditions . . . . . . . . . . . . . . . . . . . . . 10

4Quick Start . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1Unpacking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.2Power . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.3Connecting the Probe . . . . . . . . . . . . . . . . . . . . . . . . 11

5Parts and Controls . . . . . . . . . . . . . . . . . . . . . . . . 13

5.1Front Panel Buttons . . . . . . . . . . . . . . . . . . . . . . . . . 13

5.2Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

6General Operation . . . . . . . . . . . . . . . . . . . . . . . . 15

6.1

Selecting Units . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.2Parameter Menus . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.3Menu Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

6.4Selecting the Probe Characterization . . . . . . . . . . . . . . . . 17

6.4.1 Setting the Probe Characterization Type . . . . . . . . . . . . . . . . . . . . 17

6.4.2 Setting the Characterization Coefficients . . . . . . . . . . . . . . . . . . . . 17

6.4.3 ITS-90 PRT and Coefficients . . . . . . . . . . . . . . . . . . . . . . . . . . 18

6.4.4 Callendar-Van Dusen (RTD) Conversion . . . . . . . . . . . . . . . . . . . . 20

6.4.5 IPTS-68 Conversion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.4.5.1 Setting the Characterization Coefficients. . . . . . . . . . . . . . . . . . . . . . . . 21

6.4.5.2 Testing the Coefficients . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

6.5Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.6

Setting the Current . . . . . . . . . . . . . . . . . . . . . . . . . 22

6.7Power Saver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

i

7 Digital Communications Interface . . . . . . . . . . . . . . .

23

7.1

Serial Interface . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

 

7.1.1

Setting the Baud Rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. 23

 

7.1.2

Automatic Transmission of Measurements . . . . . . . . . . . . . . . . . . .

24

 

7.1.3

Time Stamp and System Clock . . . . . . . . . . . . . . . . . . . . . . . . .

24

 

7.1.4

Duplex Mode and Linefeed . . . . . . . . . . . . . . . . . . . . . . . . . . .

25

7.2

GPIB Interface . . . . . . . . . . . . . . . . . . . . . . . . . . .

25

 

7.2.1

Setting the Address . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26

 

7.2.2

Setting the Termination Character . . . . . . . . . . . . . . . . . . . . . . .

26

 

7.2.3

Time Stamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

26

7.3Remote Commands . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.3.1 Measurement Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

7.3.1.1 Reading Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7.3.1.2 Automatically Transmitting Measurements . . . . . . . . . . . . . . . . . . . . . . 29

7.3.1.3 Selecting the Unit of Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.3.1.4 Enabling the Time Stamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.3.1.5 Setting the Clock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.3.2 Probe Characterization Commands . . . . . . . . . . . . . . . . . . . . . . . 29

7.3.2.1 Selecting the Characterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.3.2.2 Testing the Characterization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.3.3 Sample Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

 

7.3.3.1

Setting the Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31

 

7.3.3.2 Setting the Probe Current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31

 

7.3.3.3 Setting the Power Saver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31

7.3.4

Communication Commands . . . . . . . . . . . . . . . . . . . . . . . . . .

31

 

7.3.4.1 Setting the Duplex Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31

 

7.3.4.2 Setting the Linefeed Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

31

7.3.5

Calibration Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32

 

7.3.5.1

Entering the Password . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32

 

7.3.5.2 Setting the Menu Lockout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32

 

7.3.5.3 Setting the Calibration Coefficients . . . . . . . . . . . . . . . . . . . . . . . . . .

32

 

7.3.5.4 Setting the Serial Number . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

32

7.3.6 Other Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.3.6.1 Instrument Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

7.3.6.2 Reading a List of Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . 35

8.1Accessing the Calibration Parameters. . . . . . . . . . . . . . . . 35

8.2Calibration Procedure . . . . . . . . . . . . . . . . . . . . . . . . 36

9Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

10Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . 39

10.1CE Comments . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

10.1.1 EMC Directive . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

10.1.1.1 Immunity Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

10.1.1.2 Emission Testing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41

10.1.2 Low Voltage Directive (Safety) . . . . . . . . . . . . . . . . . . . . . . . . . 41

ii

Figures

Figure 1

Connecting a four-wire probe . . . . . . . . . . . . . . . . . . . . . .

12

Figure 2

1502A Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . .

13

Figure 3

1502A Back Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . .

14

Figure 4

Parameter Menu Structure . . . . . . . . . . . . . . . . . . . . . . . .

16

Figure 5

Serial Cable Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . .

23

iii

Tables

Table1

International Electrical Symbols . . . . . . . . . . . . . . . . . . . . .

1

Table 2

Matching Certificate Values to 1502A ITS-90 Coefficients . . . . . . .

18

Table 3

Setting Coefficients Rtpw, a8, b8, a4, and b4 . . . . . . . . . . . . . .

19

Table 4

Setting Coefficients Rtpw, a5, and b5 . . . . . . . . . . . . . . . . . .

19

Table 5

Setting Coefficients R(273.16), a6, b6, c6, and d . . . . . . . . . . . .

20

Table 6

Command List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

27

Table 6

Command List Continued . . . . . . . . . . . . . . . . . . . . . . . .

28

iv

Fluke 1502A User Manual

1 Before You Start

Symbols Used

1 Before You Start

1.1Symbols Used

Table 1 lists the symbols that may be used on the instrument or in this manual

Table1 International Electrical Symbols

and the meaning of each symbol.

Symbol

Description

 

 

 

 

 

 

AC (Alternating Current)

 

 

 

 

 

 

AC-DC

 

 

 

 

 

 

Battery

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

1

1502A Thermometer Readout

User’s Guide

Symbol Description

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

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

1.2Safety Information

Use this instrument only as specified in this manual. Otherwise, the protection provided by the instrument may be impaired. Refer to the safety information in Sections 1.2.1 and 1.2.2.

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.

1.2.1 Warnings

To avoid possible electric shock or personal injury, follow these guidelines.

DO NOT operate this unit without a properly grounded, properly polarized power cord.

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

DO NOT use this unit for any application other than calibration work.

DO NOT use this unit in environments other than those listed in the user's guide.

DO NOT use this instrument in combination with any probe to measure the temperature or resistance of any device where the probe might come in contact with a conductor that is electrically energized. Severe electric shock, personal injury, or death may occur.

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

2

1 Before You Start

Safety Information

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 1010-1. 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.

Follow all safety guidelines listed in this user's guide.

Calibration Equipment should only be used by Trained Personnel.

To avoid possible burn hazards, follow these guidelines.

This instrument can measure extreme temperatures. Precautions must be taken to prevent personal injury or damage to objects. Probes may be extremely hot or cold. Cautiously handle probes to prevent personal injury. Carefully place probes on a heat/cold resistant surface or rack until they reach room temperature.

1.2.2 Cautions

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

DO NOT change the values of the calibration constants from the factory set values unless you are recalibrating the instrument. The correct setting of these parameters is important to the safety and proper operation of the instrument.

Allow sufficient air circulation by leaving at least 3 inches of space between the thermometer and nearby objects.

For CE compliance and for performance, use only the AC adapter shipped with the instrument. If the AC adapter needs to be replaced, contact an Authorized Service Center.

This instrument and thermometer probes are sensitive and can be easily damaged. Always handle these devices with care. DO NOT allow them to be dropped, struck, stressed, or overheated.

Probes are fragile instruments which can be damaged by mechanical shock, over-heating, and absorption of moisture or fluids in the wires or hub. Damage may not be visibly apparent but nevertheless can cause drift, instability, and loss of accuracy. Observe the following precautions:

DO NOT allow probes to be dropped, struck, bent, or stressed.

DO NOT overheat probes beyond their recommended temperature range.

DO NOT allow any part of the probe other than the sheath to be immersed in fluid.

DO NOT allow the probe hub or wires to be exposed to excessive temperatures.

3

1502A Thermometer Readout

User’s Guide

Keep the probe wires clean and away from fluids.

1.3Authorized 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: support@hartscientific.com

Fluke Nederland B.V.

Customer Support Services

Science Park Eindhoven 5108

5692 EC Son

NETHERLANDS

Phone: +31-402-675300

Telefax: +31-402-675321

E-mail: ServiceDesk@fluke.nl

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: xingye.han@fluke.com.cn

4

1 Before You Start

Authorized Service Centers

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: antng@singa.fluke.com

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

Model Number

Serial Number

Voltage

Complete description of the problem

5

2 Introduction

2 Introduction

The 1502A is a low-cost high-accuracy digital thermometer readout designed to be used with 25Ω and 100Ω RTDs and SPRTs. Its unique combination of features makes it suitable for a wide variety of applications from laboratory measurement to industrial processes. Features of the 1502A include:

Measures 25Ω and 100Ω RTDs and SPRTs

Four-wire connection eliminates lead resistance effects

Accuracy: 0.006°C at 0°C

Resolution: 0.001°C

Fast one-second measurement cycle

Adjustable digital filter

Accepts ITS-90 characterization coefficients

Also accepts Callendar-Van Dusen and IPTS-68 coefficients

Adjustable excitation current

Displays temperature in Celsius, Fahrenheit, or Kelvin or displays resistance in ohms

Password protection of critical parameters

Large, bright eight-digit LED display

Serial RS-232 interface standard; IEEE-488 GPIB interface optional

Detachable power cord

Light weight, small and portable

Sturdy, reliable construction

7

3 Specifications and Environmental Conditions

Specifications

3Specifications and Environmental Conditions

3.1

Specifications

 

 

 

 

 

Resistance Range

0Ω to 400Ω, auto-ranging

 

Resistance Accuracy, one year1

0Ω to 20Ω: 0.0005Ω

 

 

20Ω to 400Ω: 0.0025% (25 ppm) of reading

 

Resistance Accuracy, short

0Ω to 30Ω: 0.0005Ω

 

term1, 2

30Ω to 400Ω: 0.0015% (15 ppm) of reading

 

Temperature Range3

–200°C to 962°C (–328°F to 1764°F)

 

Temperature Accuracy1, 3, 4

–100°C: 0.004°C

 

 

0°C: 0.006°C

 

 

100°C: 0.009°C

 

 

200°C: 0.012°C

 

 

300°C: 0.015°C

 

 

400°C: 0.018°C

 

 

500°C: 0.021°C

 

 

600°C: 0.024°C

 

Temperature Coefficient of

1 ppm/°C

 

Resistance1

 

 

Resistance Resolution

0Ω to 20Ω: 0.0001Ω

 

 

20Ω to 400Ω: 0.001Ω

 

Temperature Resolution

0.001°C

 

Probe

Nominal R(0.01°C): 25Ω to 100Ω

 

 

RTD, PRT, or SPRT

 

Probe Connection

4-wire with shield, 5-pin DIN connector

 

Maximum acceptable lead

100Ω

 

resistance

 

 

Probe Characterizations

ITS-90 sub-ranges 4, 6, 7, 8, 9, 10, and 11

 

 

IPTS-68: R0, α, δ, a4, and c4

 

 

Callendar-Van Dusen: R0, α, δ, and β

 

Probe Excitation Current

0.5 and 1 mA , user selectable, 2Hz

 

Measurement Period

1 second

 

Digital Filter

Exponential, 0 to 60 seconds time constant (user-selectable)

 

Communications

RS-232 serial standard

 

 

IEEE-488 (GPIB) optional, conforms to IEEE-488.1, capability AH1,

 

 

SH1, T6, L4, DC1

 

Display

8-digit, 7-segment, yellow-green LED; 0.5 inch high characters

 

Clock accuracy, typical

0.01%

 

Operating Temperature Range

Full accuracy: 16°C to 30°C

 

 

Absolute: 0°C to 55°C

 

AC power

115 VAC ±10%, 50/60 Hz, 10 W, nominal, 1 A maximum

 

 

230 VAC ±10%, 50/60 Hz, 10 W, 1 A, nominal (optional)

 

 

Detachable power cord

 

Size

5.6 inches (14.3 cm) wide x 7.1 inches (18.1 cm) deep x 2.4 inches

 

 

(6.1 cm) high

9

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