Fluke 1521 7.8.10 IEC751, 7.8.11 CVD

A PRTwas calibrated to ITS-90 and its calibration certificate states values for

coefficientsR(273.16K), a4, b4, a8, and b8. Set the 1521 coefficients to the

certificatevalues as follows.

1521Coefficients CertificateValue

R(.01) R(273.16K)

aa8

bb8

c0.0

d0.0

a4 a4

b4 b4

Example2:

A PRTwas calibrated to ITS-90 and its calibration certificate states values for

coefficientsR(273.16K), a5, and b5. Set the 1521 coefficients to the certificate

valuesas follows.

1521Coefficients CertificateValue

R(.01) R(273.16K)

aa5

bb5

c0.0

d0.0

a4 a5

b4 b5

7.8.10 IEC751

The IEC-751probe type is for standard PRTs (RTDs) conforming to the

IEC-751 or DIN-43760 standards.This type of probe is generally low cost and

has a wide operating range (–180°C to 420°C or higher), but has limited accu-

racy(0.15°C to 4°C). There are no user programmable coefficients associated

with this probe type.

7.8.11 CVD

The CVD (Callendar-Van-Dusen)type is used with PRTs that have unique cal-

ibrationcoefficients or do not match the IEC-751 specification. This type of

Contents

Main Rev. 571203 Table of Contents 7 Display Functions. . . . . . . . . . . . . . . . . . . . . . . . . 25 8 Communications Interface. . . . . . . . . . . . . . . . . . . . 37 9 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 10 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . 45 Page Figures and Tables 1 Before You Start 1.1 Symbols Used 1.2 Safety Information 1.2.1 Warnings 1.2.2 Cautions 1.3 Authorized Service Centers Page 2 Introduction 3 Specifications and Environmental Conditions 3.1 Specifications 9 3 Specifications and Environmental Conditions Specifications 3.2 Environmental Conditions 4 Quick Start 4.1 Unpacking 4.2 Use Proper Care with the 1521 and Accessories 4.3 Learn About the Features and Components 4.4 Connect the Probe 4.5 Connect the Power Source 4.6 Switch the Power On 4.7 Measure Temperature Page Page 5.2 Top and Side Features 5.3 Back Features 5.4 Internal Features 5.5 Accessories Page 6 General Operation 6.1 Battery 6.2 DC Power Source + 6.3 Power Button 6.4 Display and Backlight 6.5 Probe 6.6 INFO-CON Connector 1521 Handheld Thermometer Readout Figure6 Probe Wiring Diagrams 24 7 Display Functions Each of these operating modes is described in the sections that follow. 7.1 Blank Mode This mode is identified by Blank that temporarily appears on the display. 7.2 Min/Max Mode 7.3 Hold Mode 7.4 Delta(x) Mode 7.5 Units 7.6 Rate 7.7 Resolution 7.8 CAL MODE 7.8.1 Mtr Due 7.8.2 Prb Due 7.8.3 Time 7.8.4 Passcode 7.8.5 Date 7.8.6 Probe Lock 7.8.7 Prb # 7.8.8 Prb Type 7.8.9 ITS-90 7.8.10 IEC751 7.8.11 CVD 7.8.12 YSI-400 7.8.13 THERM 7.8.14 Probe Wires 7.8.15 PCal 7.8.16 PDue 7.8.17 Filter 7.8.18 MCal 7.8.19 MDue 7.8.20 CAL1 and CAL2 8 Communications Interface 8.1 RS-232 Connection 8.2 Communication Command List 8.2.1 Primary Commands 8.2.2 Calibration Commands 39 8 Communications Interface Communication Command List Page Page 9 Calibration 9.1 Required Equipment 9.2 Calibration Procedure Page 10 Maintenance 11 Troubleshooting 11.1 An Error Message Is Displayed The followingtable lists possible error messages, their causes, and suggested actions. 47 11 Troubleshooting An Error Message Is Displayed 11.2 CE Comments 11.2.1 EMC Directive 11.2.2 Low Voltage Directive (Safety)