Instruction/ maintenance manual of the product 50D Fluke
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PN 1281009 October 1999 Rev.1, 3/ 03 ©1999- 2003 Fl uke C orporati on. All rig hts reserv ed. P rinted in U.S .A. All produc t nam es are tr adem arks of their res pecti ve compa nies. 1 50S & 50D Thermometer Calibration Informa tion W Warning These service instructions are fo r use by qua lified personnel only.
50S & 50D Thermomete r Calibration In formati on 2 In t e r n a t ion a l S y mbols Table 1 id entif ies the in ternat ional elect rical symbol s used in this d ocu ment.
Spec i ficat ions 3 Sp ecif i c a ti on s G ener a l Weight 280 g (10 oz) Dimensions (without hols ter) 2.8 cm × 7.5 c m × 16.6 cm (1.1 in × 3 i n × 6.
50S & 50D Thermomete r Calibration In formati on 4 Clean the thermo mete r case w ith a m ild de tergen t and wate r. The pca may be w ashed w ith iso propy l alcohol o r deion ozed wa ter and a soft brush. D ry the pca w ith clean dry air at low pressu re, the n bake it a t 50 o C for 24 hours.
Basic Ma intena nce 5 Chang i ng t h e Bat t ery W Warning • Replace the battery as soon as the low battery indicator ( N ) a ppears. The possibility of false readings increases when the battery is not fully charged. False readings can lead to personal injury.
50S & 50D Thermomete r Calibration In formati on 6 R e qui r e d T e s t Equipm e nt Table 2 list s the requ ired tes t equipm ent need ed to pe rform the perfo rmance test and ca libra tion proced ures for the 5 0S and 50D th ermo meters.
Perform ance Test s 7 K J MAX MIN HOLD REC C F 50S Display 50D Display - + T1 T2 T1-T2 K J HOLD C F - + zf03f. eps Figure 3. Display Seg ments W i d e Range Pe r f o r manc e Test Procedure This tes t veri fies the instrum ent sp ecif icatio ns. If the ins trumen t fails this tes t, perfor m the calib ration procedure.
50S & 50D Thermomete r Calibration In formati on 8 5520A Ice bath Thermocouple wire 50S or 50D Thermometer + _ Copper wire zf05f. eps Figure 4. Ice B ath Equipment Conne ctions Ic e B a t h T e st Use the fo llowing p rocedure to test the the rmomete r.
Calibration 9 Table 3. Performance Test Values Thermocouple Input Voltage Display Reading Type (mV DC) o C o F K -5.587 -182.0 ± (0.9) -295.6 ± (1.6 ) K -3.211 -89.0 ± (0.8) - 128.2 ± (1. 4) K 21.919 530.0 ± (1.2) 986.0 ± (2.3 ) K 54.297 1355.0 ± (2.
50S & 50D Thermomete r Calibration In formati on 10 position unt il th e display i s locked in self-t est (all LCD segm ents on). Thi s ther mometer is now in the Reference Jun ction Sen sor ca libra tion mo de. Shorting o ut the V IEW sw itch grid turns o ff a fi lter so t hat the reading sta bi liz es im med ia tely.
Calibration 11 FLUKE 52-1601 zf09f. eps Figure 6. A1 Main PCA Adjus tments O pt i m i z i ng Th e rm o me t e r Pe r f o r mance i n t h e Negat i ve T e mper a t ur e Range Perfor m the fo llow ing step s to op timize the the rmome ter pe rform ance in the nega tive t emper ature ran ge: 1.
50S & 50D Thermomete r Calibration In formati on 12 5. Allow th e system to stab ilize, then ad just T1 o r T2 offse t adjus tments fo r a te mperature display equ al to the read ing of the lag bath refer ence the rmomet er. 6. Calibra tion of the the rmome ters is com plete.
Replaceab le Par ts 13 R e p la c ea b l e P a rts Refer to T able 4 for a ll rep lacem ent part nu mbers and Figure 8 for par t location s. Unless specifie d in the “Model Nu mber” co lumn, a ll parts are fo r all u nits. To orde r replace able pa rts, se e the “Ser vice Cen ters” section of this manua l.
50S & 50D Thermomete r Calibration In formati on 14 15 6 10 1 12 7 13 3 11 8 16 9 2X 4X 4X 4X 2 4 5 zf08f. eps Figure 8. Exploded Vi ew Diagram (Mod el 50D is Shown).
An important point after buying a device Fluke 50D (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 50D 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 50D - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Fluke 50D you will learn all the available features of the product, as well as information on its operation. The information that you get Fluke 50D will certainly help you make a decision on the purchase.
If you already are a holder of Fluke 50D, 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 50D.
However, one of the most important roles played by the user manual is to help in solving problems with Fluke 50D. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Fluke 50D 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
