Instruction/ maintenance manual of the product 5626/5628 Fluke
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5626/5628 Platinum Resistance Thermometer User’ s Guide Rev. 532801 Hart Scientific.
Rev. 532801 Fluke Hart Scientific • 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.
T able of Contents 1 Befor e Y ou Start . . . . . . . . . . . . . . . . . . . . . . 1 1 . 1 Symbols Used . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 .2 Safety Information . . . . . . . . . . . . . . . . . . . . . . . 2 1 .2. 1 W arnings . . .
7 . 1 Case Options . . . . . . . . . . . . . . . . . . . . . . . . . 1 5 7 .2 P RT T ermination . . . . . . . . . . . . . . . . . . . . . . . 1 5 8 Tr oubleshooting . . . . . . . . . . . . . . . . . . . . . 1 7 8. 1 Troubleshooting . . . . . . . . . .
iii Figures Figure 1 Hart Model 5626 and 5628 Platinum Resistance Thermometers . . . . . . 5 Figure 2 Standard Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Figure 3 PRT Schematic . . . . . . . . . . . . . . . . . . . . . . . . .
iv T ables T able 1 International Electrical Symb ols . . . . . . . . . . . . . . . . . . . . . . 1 T able 2 Specifications . . . . . . . . . . . . . .
1 Before Y ou Start 1.1 Symbols Used T able 1 lists the Inter national Electrical Symbols . Some or all of these sym - bols may be used on the instrument or in this manual.
Symbol Description Canadian Standards Association OVE RVOL T AG E (Installation) C A TE G ORY I I, Pollution Degree 2 per I E C 1010 - 1 r e f e r s t o t h e l e v e l o f I m p u l s e W i t h s t a n d V o l t a g e p r o t e c t i o n provided .
• DO N OT drop or bang the probe in any way . This w ill cause damage to the probe internally and affect its calibration. • Read Section 5 entitled “PRT Care and Handling Guidelines” before re - moving the P RT from the shipping box or case. Incorrect handling can damage the PRT and void the warranty .
Phone: +86-1 0-6-5 1 2-3436 T elefax: +86-1 0-6-5 1 2-343 7 E-mail: xing ye.han@fluke.com .cn Fluke South East Asia Pte Ltd . Fluke AS EAN Reg ional Office Serv ice Center 60 Alexandra T errace #03-1 6 The Comtech (Lobby D) 1 1 8502 S INGAPORE Phone: +65 6 799-5588 T elefax: +65 6 7 99-5588 E-mail: antng@singa .
2 Introduction 2.1 General The Hart Platinum Resistance Thermometers (P RT) models 5626 and 5628, are designed to b e the best sec ondary standard interpolating instrument converting temperature to resistance. The P RTs are used with a readout de - vic e to detect temperature changes or actual temperature.
calibrated using a primar y standard that has been calibrated in a primary calibration laborator y using know n intrinsic values . 2.3 Calibration In order for any instrument to be used as a standard it must be calibrated.
3 Specifications and W arranty 3.1 Specifications See T able 2 and Figure 2. 7 3 Specifications and Warranty 5626 5628 Temperature Range –200°C to 661°C R tp 100 Ω ±1 Ω at 0.01°C 25.5 Ω ±0.5 Ω at 0.01°C Resistance RatioW(Ga) W(302.9146K) ≥ 1.
3.2 Construction The Model 5626 and 5628 P RT s cover the range from –200°C to 66 1°C . The sensor elements are crafted using high purity platinum w ire wound in a strain free design on a spec ially designed support . 3.3 Electrical Circuit The PRTs are provided w ith a terminal box handle.
4 Installation 4.1 Environmental Issues Ideally, temperature calibration equipment should be used in a calibration laborator y or other facility spec ifically designed for this purpose.
5 PRT Care and Handling Guidelines 5.1 PRT Care CAUT I O N: R E AD T H I S S E CT I O N B E FO R E RE M OVI N G T H E P RT FR O M T H E S H I P P I N G BOX O R CAS E The 5626 and 5628 Platinum Resistance Thermometers (P RTs) are delicate instruments. Care must b e taken in handling the P RT s to maintain calibra - tion accurac y .
• DO allow sufficient time for the thermometer to stabilize before making measurements. This allows for the best accurac y . • DO use the correct drive current with the thermometer to prevent error in temperature or resistance. Hart Scientific recommends 1mA.
6 Operation 6.1 General F or best results, be familiar w ith the operation of the heat source and the r e a d - o u ti n s t r u m e n t .B es u r et of o l l o wt he manufacturer’s instructions for the read-out instrument and the heat source.
6.4 Thermal EMF Two factors contribute to thermal E M F, chemical c onsistency and physical consistenc y . V ariations in chemical structure due to impurities can contrib - ute to thermal E M F . Also discrepancies in crystal structure can contribute to thermal E M F .
7 Accessories 7.1 Case Options The 5626/5628 PRT comes in a rig id case appropriate for the leng th of the probe. • Model Number 26 0 1 P RT Protective Case for 5626-1 2 and 5628-1 2 PR T • Model Number 26 02 PRT Protective Case for 5626-1 5, 5628-1 5, 5626-20, and 5628-20 PRT 7.
8 T roubleshooting 8.1 T roubleshooting In the event that the probe appears to function abnormally, this section may be of use in solv ing the problem . Several possible problem conditions are described along w ith likely causes and solutions . If a problem arises, please read this section carefully and attempt to understand and solve the problem .
Problem Causes and Solutions Temperature readout differ - ent than expected, e.g. the heat source is set at 300°C, the PRT measures 275°C. • Measure the PRT resistance at TPW. • If the resistance of the PRT is less than the rated resis - tance, e.
An important point after buying a device Fluke 5626/5628 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Fluke 5626/5628 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Fluke 5626/5628 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Fluke 5626/5628 you will learn all the available features of the product, as well as information on its operation. The information that you get Fluke 5626/5628 will certainly help you make a decision on the purchase.
If you already are a holder of Fluke 5626/5628, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Fluke 5626/5628.
However, one of the most important roles played by the user manual is to help in solving problems with Fluke 5626/5628. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Fluke 5626/5628 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
