Fluke 5623A инструкция обслуживания

5623A Platinum Resistance Thermometer User’ s Guide Rev. 5A1101 Hart Scientific[...]

Rev. 5A1101 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 © 2004 • Printed in USA[...]

T able of Contents 1 Before Y ou Start ............................1 1.1 Symbols Used ........................................ 1 1.2 Safety Information ..................................... 2 1.2.1 Warnings ................................................... 2 1.2.2 Cautions ................................................... 2 1.3 Hart Scientific [...]

ii Figures Figure 1 PRT Schematic ......................................... 9[...]

iii T ables T able 1 International Electrical Symbols ................................ 1 T able 2 Specifications ......................................... 7[...]

1 Before Y ou Start 1.1 Symbols Used T able 1 list s the International Electrical Symbol s. Some or all of these symbols may be used on the instrument or in this manu al. Symbol Description AC (Alternating Current) AC-DC Battery CE Complies with European Union Directives DC Double Insulated Electric Shock Fuse PE Ground Hot Surface (Burn Hazard) Re[...]

Symbol Description Canadian Standards Association OVERVOL T AGE (Installation) CA TEGORY II, Pollution Degree 2 per IEC1010-1 refers to the level of Impulse Withstand Voltage protection provided. Equipment of OVER VOL TAGE CA TE - GORY II is energy-consuming equipment to be supplied from the fixed installation. Exam - ples include household, office[...]

• Keep the shipping container in case it is necessary to ship the PR T . Incor - rect packaging of the PR T for shipment can cause irreparable damage. 1.3 Hart Scientific Authorized Ser vice Centers Please contact one of the follo wing authorized Service Centers to coordinate service on your Hart product: Hart Scientific, Inc. 799 E. Utah V alley[...]

Fluke South East Asia Pte Ltd. Fluke ASEAN Regional Of fice Service Center 83 Clemenceau A venue #15-15/06 Ue Square 239920 SINGAPORE Phone: +65-737-2922 T elefax: +65-737-5155 E-mail: antng@singa.fluke.com When contacting these Service Cente rs for support, please hav e the follo wing information av ailable: • Model Number • Serial Number • [...]

2 Introduction 2.1 General The Platinum Resist ance Thermometers (PR T) model 5623A is designed to be a secondary standard interpolat ing instr ument con verting temperature to resis - tance. The 5623A assembly design all ows for e xposure to very cold tempera - ture (–200°C) and is an i deal reference for veri fication, monitoring or calibratin[...]

3 Specifications and W arranty 3.1 Specifications See T able 2. Temperature Range –200°C to 156°C Entire Assembly Range –200°C to 156°C Accuracy (Includes calibration uncertainty and short-term stability) ±0.05°C (full range) Long-term Drift (°C) <±0.01 at 0°C per year, when used periodically at 200 Hysteresis (°C) <0.01 Tempera[...]

T o exercise this warranty , the purchas er must forward the product after calling or writing an Autho rized Hart Scientific Service Center (see Section 1.3 on page 3) for authorization. The Service Center assumes NO risk for in-transit damage. THE FOREGOING W ARRANTY IS PURCHASER’S SOLE AND EXCLU - SIVE REMED Y AND IS IN LIEU OF ALL O THER W ARR[...]

4 Installation 4.1 Lead Wire Identification The 5623A PR T is equipped with a four-wi re cable (see Figure 1). Four lead wires are used to cancel lead wire resistance. For best results, the readout de - vice should be equipped to handle four -terminal resistors. The lead wires are two dif ferent colors. Lead wire pairs attached to each end of the s[...]

5 PR T Care and Handling Guidelines 5.1 PR T Care CA UTION: READ THIS SECTION BEFORE REMOVING THE PRT FR OM THE SHIPPING BOX OR CASE Care must be taken i n handling the PR T to maintain calibration accuracy . Care should still be used when handling the PR T ev en though the Inconel sheath is durable and provi des good protection for the sensor . Co[...]

• DO NO T scre w a clamp down so tight that it dents the sheath. This can permanently damage the PR T . 12 Hart Scientific 5 PRT Care and Handling Guidelines[...]

6 Operation 6.1 General For best results, be familiar with the operatio n of the heat source and the read-out instrument. Be sure to follo w the manufacturer’ s instructions for the read-out instrument and the heat source. 6.2 Immersion Requirements Stem effect can cause measurement erro rs for an y thermometer not immersed in the fluid at least [...]

7 T roubleshooting 7.1 T roubleshooting In the e vent that the probe appears to function abnormall y , this section may be of use in solving the problem. Se veral possi ble problem conditions are de - scribed along with likely causes and solutions. If a problem arises, please read this section carefully and a ttempt to understand and sol ve the pro[...]