FLUKE 16 Calibration Information 电路图.pdf

PN 644226 July, 1997 Rev.1, 3/99 1997,1999 Fluke Corporation, All rights reserved. Printed in U.S.A. All product names are trademarks of their respective companies. 1 16 Multimeter with Temperature Calibration Information WWarning To avoid electrical shock, remove test leads and any input signals from the Meter before opening the case. Caution This Meter contains parts that can be damaged by static discharge. Follow the standard practices for handling static sensitive devices. Introduction The 16 Calibration Information instruction sheet provides the information necessary to calibrate and verify the Fluke Model 16 Multimeter with Temperature (hereafter known as the Meter). This instruction sheet provides the following information: Product specifications Disassembly and reassembly Performance test procedures Calibration procedures and adjustments Replacement parts See the instruction sheet for operating instructions. Service The Meter is warranted to be free from defects in material and workmanship for one year. The complete warranty statement is in the Meters instruction sheet. To contact Fluke, call one of the following telephone numbers: USA and Canada: 1-888-99-FLUKE (1-888-993-5853) Europe: +31-402-678-200 Japan: +81-3-3434-0181 Singapore: +65-738-5655 Anywhere in the world: +1-425-356-5500 Or, visit Flukes Web stie at . Specifications Specifications are in Table 1. Accuracy is specified for a period of one year after calibration, at 18C to 28C (64F to 82F) with relative humidity to 90%. AC conversions are ac- coupled, average responding, and calibrated to the rms value of a sine wave input. Table 1. Specifications Maximum Voltage Between any Terminal and Earth Ground (excludes 10% tolerance) 600 V ac or dc Display3-3/4-digits, 4000 counts, updates 4/sec Operating Temperature-10C to 50C Storage Temperature-30C to 60C indefinitely (to -40C for 100 hrs) Temperature Coefficient0.1 x (specified accuracy)/C (28C) Relative Humidity0% to 90% (-10C to 35C) 0% to 70% (35C to 50C) Altitude Operation/Non-operation2000 m Battery Type9V, NEDA 1604 or IEC 6F22 Battery Life650 continuous hours with alkaline 450 continuous hours with carbon-zinc Shock, Vibration3 meter drops: Sinusoidal vibration up to 3 G 55 Hz Size (HxWxL)1.35 in x 2.75 in x 5.55 in (3.46 cm x 7.05 cm x 14.23 cm) Weight10 oz (286g) EMI RegulationsComplies with FCC Part 15B, Class B, EN50081-1, EN50082-1. SafetyDesigned to Protection Class II requirement of UL1244, ANSI/ISA-S82.01 - 1988, CSA C22.2 No 231, and VDE 0411, and IEC 1010-1 overvoltage category III (CAT III), 600 V CertificationP $ RadioFans.CN 收音机爱 好者资料库 16 Multimeter with Temperature 2 Accuracy specifications are given as follows: (% of reading + number of least significant digits). Table 1. Specifications (cont) FunctionRangeResolutionAccuracy f (50 to 400 Hz) 4000 mV 1 4.000 V 40.00 V 300.0 V 400.0 V 600.0 V 1 mV 0.001 V 0.01 V 0.1 V 0.1 V 1 V (1.9%+3) (1.9%+3) (1.9%+3) NA (1.9%+3) (1.9%+3) E 4000 mV 1 4.000 V 40.00 V 300.0 V 400.0 V 600 V 1 mV 0.001 V 0.01 V 0.1 V 0.1 V 1 V (0.9%+2) (0.9%+2) (0.9%+1) NA (0.9%+1) (0.9%+1) J 400.0 4.000 k 40.00 k 400.0 k 4.000 M 40.00 M 0.1 0.001 k 0.01 k 0.1 k 0.001 M 0.01 M (0.9%+2) (0.9%+1) (0.9%+1) (0.9%+1) (0.9%+1) (1.5%+3) K 1.000 F 10.00 F 100.0 F 1000 F 10000 F 0.001 F 0.01 F 0.1 F 1 F 10 F (1.9%+2) (1.9%+2) (1.9%+2) (1.9%+2) (10%+90) typical 0 to 200 A0.1 A(1% + 2 counts) (50 to 400 Hz) 0 to 200 A0.1 A2% + 3 counts) Temperature 3 (Type K Thermocouple) -10C to 400C 14F to 75F -40C to -10C -40F to 14F 0.1C 0.2F 0.1C 0.2F (1% + 0.8C) (1% + 1.5F) (5% + 1.5C) Typical (5% + 3.3F) Typical C 2 2.000 V0.001 V(0.9%+2) 1. The 4000 mV range can be entered only in the manual range mode. Use the 4000 mV range with accessories. 2. The beeper is guaranteed to come on at 250. The Meter detects opens or shorts of 250 s or longer. 3. Error does not include Type K Thermocouple errors. RadioFans.CN 收音机爱 好者资料库 Specifications 3 Table 1. Specifications (cont) FunctionOverload Protection 1 Input Impedance (Nominal) Common Mode Rejection Ratio (1 k Unbalanced) 2 Normal Mode Rejection 2 f 600 V dc 5 M 2 k 60 dB at dc 50 Hz or 60 Hz E 600 V dc 10 M 2 k 100 dB at dc, 50 Hz or 60 Hz 50 dB at 50 Hz or 60 Hz Open Circuit Test Voltage Full Scale Voltage To 4.0 M 40 M Short Circuit Current J 600 V dc<1.5 V dc<450 mV dc<1.5 V dc<500 A L 2 600 V dc2.4-3.0 V dc2.400 V dc0.95 mA (typical) Burden VoltageCommon Mode Rejection Ratio Normal Mode Rejection 600 V rms or dc100 dB dc 50 Hz or 60 Hz 50 dB 50 Hz or 60 Hz 600 V rms or dc60 dB at dc, 50 Hz or 60 Hz . 1. 3 x 10 6 V Hz maximum. 2. 2 k input impedance up to 50 V. Impedance increases with input voltage to 300 k at 600 V. MIN MAX Recording Accuracy and Response Time Specified accuracy of the measurement function 12 digits in dc for changes 200 ms in duration (40 digits in ac). Typical 100 ms response to 80%. Example 1: this would mean 1.2 when recording temperature. Example 2: This would mean 12 A when recording A or 12 A if used with a dc amp probe. MIN MAX Recording with Elapsed Time Elapsed Time: 0 to 100 hours (99.59) Resolution: 1 minute Accuracy: 0.3% typical Continuity Capture Detects opens or shorts of 250 s or longer. RadioFans.CN 收音机爱 好者资料库 16 Multimeter with Temperature 4 Disassembly and Reassembly Referring to Figure 1, disassemble the Meter as follows. A Phillips-head screwdriver and small flat-blade screwdriver are required. 1. Remove the test leads and set the rotary knob to OFF. 2. Remove the Phillips-head screws from the case bottom. 3. Separate the case top from the case bottom. 4. To replace the battery: lift the battery from the case bottom and insert a new 9V battery. Be sure the positive and negative battery posts are oriented correctly. 5. To remove the pca: insert a small, flat-blade screwdriver between the edge of the case top and the pca where shown in Figure 2. Gently unsnap a side of the case top from the pca. Repeat on the other side of the pca. Unsnap the case from the top of the pca last. Lift the pca from the case top by its edges. If the elastomeric contact strips for the switch assembly and LCD are stuck to the pca, remove them without touching the conductive edges. Note Before reinserting the pca, make sure that the rotary knob is in the OFF position. 7. To reinsert the pca: Place the pca over the four screw posts in the case top, then press gently on the center of the pca while using the small flat-edge screwdriver to shoehorn the pca under the snap on a side of the case top. Repeat on the other side and the top. 8. To remove the switch support, use a small, flat-blade screwdriver to gently unsnap the sides and top of the switch support from the snaps shown in Figure 2. 9. The LCD, switch assembly, and elastomeric contact strips for the LCD and switch assembly are accessible and can be replaced as needed. Do not allow the LCD to get wet. Before installing a new LCD, make sure that all connector contact points are clean. Caution Do not touch the conductive edges of the elastomeric strips or the contacts on the switch assembly. If they are contaminated, clean them with isopropyl alcohol. 9. Reassembling the Meter is the reverse of disassembling it. After the Meter is reassembled, execute the Performance Test to confirm that the Meter is working properly. Cleaning W Warning To avoid electrical shock, remove test leads and any input signals before cleaning. To clean the case, wipe it with a cloth lightly dampened with water and a mild detergent. Do not use abrasives, solvents, or alcohol. Recommended Test Equipment A list of recommended equipment for the performance test and calibration adjustment procedure is shown in Table 2. Table 2. Recommended Equipment EquipmentMinimum Specification Recommended Model AC/DC CalibratorDC Voltage: 0 to 600 V Accuracy: 0.25% AC Voltage: 0 to 600 V Accuracy: 0.5% Frequency: 50 to 400 Hz 5700A, or 5500A Decade ResistorResistance: 1.0 to 40 M Accuracy: 0.25% Fluke 5500A Decade Capacitor Capacitance: 0 to 1.000 F Accuracy: 0.5% Fluke 5500A Thermocouple Wire K-Type -Fluke 80 PK-1 Temperature Probe Accuracy: Certified to 0.2C ambient Fluke 80T-150U Mercury Thermometer 0.02C resolution 0.05F resolution Princo Model ASTM 56C Princo Model ASTM 56F Flask with cap-Dewar Flask Recommended Test Equipment 5 Case, Top Decal Switch Assembly Actuator, Switch Main PCA Shield, Bottom Foot LCD Conn. Elastomeric Conn. Elastomeric LCD to PCA Support, Switch Assembly Battery Shock Absorber Case, Bottom Screw, THD Form, PH.P.STL, 5-14 x .750 ig3f.eps Figure 1. Model 16 Disassembled Unit 16 Multimeter with Temperature 6 1 2 3 Snap Snap Snaps ig2f.eps Figure 2. Removing and Reinserting the Printed Circuit Assembly Performance Test 7 Performance Test W Warning To avoid electric shock, do not execute the performance tests procedures unless the Meter is fully assembled. To ensure that the Meter is working properly and performs to specifications, use the following procedures. If the Meter fails this test, it needs calibration adjustment or repair. Multimeter Note The following performance test is for all functions except for temperature. Temperature performance test follows this procedure. 1. Referring to Table 3, put the Meter in the function and range shown for Test 1. 2. Apply the input from the appropriate source to the + and COM jacks on the Meter. The reading on the display should be within the MINIMUM and MAXIMUM values shown in Table 3. 3. Test the remaining functions and ranges. Repeat steps 1 and 2 for test numbers 2 through 41. Temperature Note The performance test for the other functions must be done before this test is done. 1. Connect the equipment as shown in Figure 3. 2. Insert a mercury thermometer to the same depth as the thermocouple wire to verify that the ice bath temperature is 0.0C. 3. Short (or apply 0.0 mV) to the copper wires at the 5700A Calibrator. 4. Verify that the Meter reads 0.0C 0.8C. 5. If this test fails, reposition the thermocouple wires and mercury thermometer in the ice bath and repeat steps 3 and 4. If the Meter continues to fail, use steps 6 through 8 to verify the temperature performance tests. 6. Remove the short applied in step 3. 7. Set the 5700A using the input voltage shown in Table 4. The reading on the display should be within the values shown in Table 4. 8. Repeat step 3 to verify that the ice bath temperature is at 0.0C 0.3C. Calibration Adjustments Perform the following calibration adjustment procedures if the Meter fails the performance test. Initial Steps 1. Remove any input signals to the Meter. 2. Remove the four screws on the back and separate the case bottom and case top. Notice that when you do so the battery remains in the case top and power to the Meter is disconnected. Note To avoid stretching or bending the battery contacts, connect leads to the base of the contacts as shown in Figure 4. 3. Observing correct polarity, connect a 9 V battery to the battery contacts using easy hook jumpers or alligator clip leads (see Figure 4). Multimeter Note The following calibration adjustment procedure is for all functions except for temperature. Temperature calibration adjustment follows this procedure. 1. Set the calibrator for 0 V dc. Put the Meter in the 4.000 V dc range. 2. Connect the calibrator to the + and COM jacks on the Meter. 3. Apply an input of +4.000 V dc 0.25% The Meter display should read between 3.997-4.003 V. If it does not, adjust R4 as described in step 4 (see Figure 4). 4. Adjust R4 (see Figure 4) so that the Meter display reads between 3.997 and 4.003 V. 5. Proceed to adjust the Temperature function. 16 Multimeter with Temperature 8 Table 3. Performance Tests Test No. Meter Range Input To Meter Switch Position Display Minimum Display Maximum 1 2 3 4 5 6 7 8 9 1 10 4.000 V ac 4.000 V ac, MIN MAX 4.000 V ac 4.000 V ac 4.000 V ac 4.000 V ac 40.00 V ac 40.00 V ac 400.0 V ac 600 V ac 0 V 0 V 10 mV, 50 Hz 10 mV, 400 Hz 3.5 V, 50 Hz 3.5 V, 400 Hz 35 V, 50 Hz 35 V, 400 Hz 350 V, 80 Hz 600 V, 400 Hz Center Center Center Center Right Center Center Right Right Center 0.000 0.000 0.007 0.007 3.430 3.430 34.30 34.30 343.0 586 0.003 0.040 0.013 0.013 3.570 3.570 35.70 35.70 357.0 614 11 12 13 14 15 16 17 18 4.000 V dc, MIN MAX 4.000 V dc 40.00 V dc 400.0 V dc 4.000 V dc 40.00 V dc 400.0 V dc 600 V dc 0 V 0 V +20 mV dc -200 mV dc +3.5 V -35 V dc +100 V dc -600 V dc Center Center Center Center Center Center Center Center -0.012 -0.002 00.01 -000.3 +3.466 -35.33 +99.0 -606 0.012 0.002 00.03 -000.1 +3.534 -34.67 +101.0 -594 19 20 21 22 23 24 25 26 27 200 A dc 200 A dc 200 A dc 200 A dc 200 A dc 200 A ac 200 A ac 200 A ac 200 A ac 0.0 A, dc 10.0 A, dc -10.0 A, dc 200.0 A, dc -200.0 A, dc 40.0 A, 50 Hz 40.0 A, 400 Hz 200.0 A, 50 Hz 200.0 A, 400 Hz Right Right Right Right Right Right Right Right Right -0.2 9.7 -10.3 197.8 -202.2 38.9 38.9 195.7 195.7 0.2 10.3 -9.7 202.2 -197.8 41.1 41.1 204.3 204.3 28 29 2 30 2 31 32 33 34 35 36 37 38 39 40 4 41 4 Continuity Continuity, Automatic Selection Continuity, Automatic Selection 400.0 400.0 400.0 4.000 k 40.00 k 400.0 k 4.000 M 40.00 M , Automatic Selection 1.000 F 1.000 F +2 V dc 2 +3.43 V dc 2 -0.5 V dc 2 0.0 1.0 350.0 1.0 k 35 k 100 k 2.9 M 35 M 1.96 V dc 0.0 F 0.95 F Right Right Right Right Right Right Right Right Right Right Right Right Right Right 1.980 3.397 3 -0.507 3 0.0 0.8 346.6 0.990 34.67 99.0 2.873 34.44 1.940 3 -0.001 F 0.930 F 2.020 3.463 3 -0.493 3 0.2 1.2 353.4 1.010 35.33 101.0 2.927 35.56 1.980 3 0.001 F 0.970 F 1. In the Automatic Selection mode, the Meter uses a low-impedance thermistor (2.5k for circuit protection and load testing (referred to as low-Z input circuitry). When using the 5100B, 5500A, or 5700A to drive the Meter with high voltages, avoid an overload/current limit condition by gradually stepping the voltage up (waiting two seconds between each step) from 90.0 V, 120.0 V, 180.0 V, and 350.0 V at 80 Hz each step. 2. Calibrator 50 divider override. 3. The dc volts annunciator must be on. 4. Conducting performance tests of the 400 , 4 k, 40 k, and 1 F ranges (tests no. 22, 23, 24, 25, 26, 31, and 32) verifies that the discrete and integrated circuitry needed to support the other capacitance ranges are working within specifications. Therefore, the tests indirectly verify that the Meter will meet specification in the 10 F, 100 F, 1000 F, and 10,000 F ranges. Table 4. Temperature Performance Tests Input VoltageDisplay Readings CF 0.00.0 0.832.0 1.5 0.919 mV23.0 1.073.4 2.2 4.095 mV100.0 1.8212.0 3.6 Calibration Adjustments 9 + + 5700A Ice Bath AK-80 Banana Plug Temperature Yellow Red Copper 0 ig6f.eps Figure 3. Performance Test for Temperature + _ 9V BATTERY + Clip to Base Contacts Adjust R4 for 3.997-4.003V DC Input Receptacles + ig1f.eps Figure 4. Calibration Adjustment for DC Voltage 16 Multimeter with Temperature 10 Temperature Note Adjust DC voltage (R4) before adjusting temperature (R38). The following describes three temp