®
16
Multimeter with Temperature
Calibration Information
W
Warning
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.
To contact Fluke, call one of the following telephone
numbers:
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:
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
•
•
•
•
•
Product specifications
Anywhere in the world: +1-425-356-5500
Disassembly and reassembly
Performance test procedures
Calibration procedures and adjustments
Replacement parts
Specifications
Specifications are in Table 1. Accuracy is specified for a
period of one year after calibration, at 18ºC to 28ºC (64ºF to
82ºF) with relative humidity to 90%. AC conversions are ac-
coupled, average responding, and calibrated to the rms
value of a sine wave input.
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 Meter’s instruction sheet.
Table 1. Specifications
Maximum Voltage Between any Terminal and Earth Ground (excludes 10% tolerance) 600 V ac or dc
Display
3-3/4-digits, 4000 counts, updates 4/sec
-10°C to 50°C
Operating Temperature
Storage Temperature
Temperature Coefficient
Relative Humidity
-30°C to 60°C indefinitely (to -40°C for 100 hrs)
0.1 x (specified accuracy)/°C (<18°C or >28°C)
0% to 90% (-10°C to 35°C)
0% to 70% (35°C to 50°C)
Altitude Operation/Non-operation
Battery Type
2000 m
9V, NEDA 1604 or IEC 6F22
Battery Life
650 continuous hours with alkaline
450 continuous hours with carbon-zinc
3 meter drops: Sinusoidal vibration up to 3 G @ 55 Hz
1.35 in x 2.75 in x 5.55 in
Shock, Vibration
Size (HxWxL)
(3.46 cm x 7.05 cm x 14.23 cm)
10 oz (286g)
Weight
EMI Regulations
Safety
Complies with FCC Part 15B, Class B, EN50081-1, EN50082-1.
Designed 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
Certification
P $
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
Specifications
Table 1. Specifications (cont)
Function
Overload
Input Impedance
(Nominal)
Common Mode
Normal Mode
Protection1
Rejection Ratio
Rejection2
(1 kΩ Unbalanced)2
>5 MΩ <100 pF2
Automatic Selection
and LoZ = >2 kΩ
<200 pF
600 V dc
>60 dB at dc 50 Hz or
60 Hz
f
(ac coupled)3
>10 MΩ <100 pF2
Automatic Selection
and LoZ = >2 kΩ
<200 pF3
600 V dc
>100 dB at dc, 50 Hz or
60 Hz
>50 dB at 50 Hz or 60
Hz
E
Open Circuit Test
Voltage
Full Scale Voltage
Short Circuit
Current
To 4.0 MΩ
40 MΩ
600 V dc
600 V dc
<1.5 V dc
<450 mV dc
<1.5 V dc
<500 µA
J
L2
2.4-3.0 V dc
2.400 V dc
0.95 mA (typical)
Burden Voltage
Common Mode Rejection
Ratio
Normal Mode
Rejection
600 V rms or dc
600 V rms or dc
<5 mV/µA
<5 mV/µA
>100 dB @ dc 50 Hz or 60
Hz
>50 dB @ 50 Hz or
60 Hz
µ[
µ\
>60 dB at dc, 50 Hz or
60 Hz
.
1. 3 x 106 V Hz maximum.
2. ~2 kΩ input impedance up to 50 V. Impedance increases with input voltage to >300 kΩ 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 µA when recording µA 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 µs or longer.
3
16
Multimeter with Temperature
Disassembly and Reassembly
Referring to Figure 1, disassemble the Meter as follows. A
Phillips-head screwdriver and small flat-blade screwdriver
are required.
Cleaning
W Warning
To avoid electrical shock, remove test leads
and any input signals before cleaning.
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.
To clean the case, wipe it with a cloth lightly dampened with
water and a mild detergent. Do not use abrasives, solvents,
or alcohol.
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.
Recommended Test Equipment
A list of recommended equipment for the performance test
and calibration adjustment procedure is shown in Table 2.
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.
Table 2. Recommended Equipment
Equipment
Minimum
Specification
Recommended
Model
AC/DC Calibrator DC Voltage: 0 to
600 V
5700A, or 5500A
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.
Accuracy: ±0.25%
AC Voltage: 0 to
600 V
Accuracy: ±0.5%
Frequency: 50 to
400 Hz
Note
Before reinserting the pca, make sure that the
rotary knob is in the OFF position.
Decade Resistor
Resistance: 1.0 to
40 MΩ
Accuracy: ±0.25%
Fluke 5500A
Fluke 5500A
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.
Decade
Capacitor
Capacitance: 0 to
1.000 µF
Accuracy: ±0.5%
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.
Thermocouple
Wire K-Type
---
Fluke 80 PK-1
Temperature
Probe
Accuracy: Certified
to ±0.2°C ambient
Fluke 80T-150U
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.
0.02°C resolution
Princo Model ASTM
56C
Princo Model ASTM
56F
Mercury
Thermometer
0.05°F resolution
Flask with cap
---
Dewar Flask
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.
4
Recommended Test Equipment
Decal
Case, Top
LCD
Conn.
Elastomeric
Conn.
Elastomeric
LCD to PCA
Switch Assembly
Actuator, Switch
Support, Switch Assembly
Battery
Shock Absorber
Case, Bottom
Main PCA
Shield, Bottom
Screw, THD Form, PH.P.STL,
5-14 x .750
Foot
ig3f.eps
Figure 1. Model 16 Disassembled Unit
5
16
Multimeter with Temperature
3
2
Snap
Snaps
1
Snap
ig2f.eps
Figure 2. Removing and Reinserting the Printed Circuit Assembly
6
Performance Test
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.
Performance Test
W
Warning
To avoid electric shock, do not execute the
performance tests procedures unless the
Meter is fully assembled.
8. Repeat step 3 to verify that the ice bath temperature is
at 0.0°C ±0.3°C.
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.
Calibration Adjustments
Perform the following calibration adjustment procedures if
the Meter fails the performance test.
Multimeter
Initial Steps
1. Remove any input signals to the Meter.
Note
The following performance test is for all functions
except for temperature. Temperature performance
test follows this procedure.
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.
1. Referring to Table 3, put the Meter in the function and
range shown for Test 1.
Note
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.
To avoid stretching or bending the battery
contacts, connect leads to the base of the
contacts as shown in Figure 4.
3. Test the remaining functions and ranges. Repeat steps
1 and 2 for test numbers 2 through 41.
3. Observing correct polarity, connect a 9 V battery to the
battery contacts using easy hook jumpers or alligator
clip leads (see Figure 4).
Temperature
Multimeter
Note
Note
The performance test for the other functions must
be done before this test is done.
The following calibration adjustment
procedure is for all functions except for
temperature. Temperature calibration
adjustment follows this procedure.
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 0.0°C.
1. Set the calibrator for 0 V dc. Put the Meter in the 4.000
V dc range.
3. Short (or apply 0.0 mV) to the copper wires at the
5700A Calibrator.
2. Connect the calibrator to the [+] and COM jacks on the
Meter.
4. Verify that the Meter reads 0.0°C ±0.8°C.
3. Apply an input of +4.000 V dc ±0.25%
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.
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.
6. Remove the short applied in step 3.
5. Proceed to adjust the Temperature function.
7
16
Multimeter with Temperature
Table 3. Performance Tests
Switch
Meter Range
Display
Display
Test No.
Input To Meter
Position
Minimum
Maximum
1
2
3
4
5
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
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
Center
Center
Center
Center
Right
Center
Center
Right
0.000
0.000
0.007
0.007
3.430
3.430
34.30
34.30
343.0
586
-0.012
-0.002
00.01
-000.3
+3.466
-35.33
+99.0
-606
0.003
0.040
0.013
0.013
3.570
3.570
35.70
35.70
357.0
614
0.012
0.002
00.03
-000.1
+3.534
-34.67
+101.0
-594
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
0 V
6
7
8
91
Right
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
292
302
31
32
33
34
35
36
37
38
39
404
414
Center
Center
Center
Center
Center
Center
Center
Center
Center
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
Right
0 V
+20 mV dc
-200 mV dc
+3.5 V
-35 V dc
+100 V dc
-600 V dc
0.0 µA, dc
10.0 µA, dc
-10.0 µA, dc
200.0 µA, dc
-200.0 µA, dc
40.0 µA, 50 Hz
40.0 µA, 400 Hz
200.0 µA, 50 Hz
200.0 µA, 400 Hz
+2 V dc2
200 µA dc
-0.2
9.7
-10.3
197.8
-202.2
38.9
0.2
10.3
-9.7
202.2
-197.8
41.1
200 µA dc
200 µA dc
200 µA dc
200 µA dc
200 µA ac
200 µA ac
38.9
41.1
200 µA ac
195.7
195.7
1.980
3.3973
-0.5073
0.0
204.3
204.3
2.020
3.4633
-0.4933
0.2
200 µA ac
Continuity
Continuity, Automatic Selection
Continuity, Automatic Selection
400.0 Ω
+3.43 V dc2
-0.5 V dc2
0.0 Ω
400.0 Ω
1.0 Ω
0.8
1.2
400.0 Ω
350.0 Ω
346.6
0.990
34.67
99.0
2.873
34.44
1.9403
-0.001 µF
0.930 µF
353.4
1.010
35.33
101.0
2.927
35.56
1.9803
0.001 µF
0.970 µF
4.000 kΩ
1.0 kΩ
40.00 kΩ
35 kΩ
400.0 kΩ
100 kΩ
4.000 MΩ
2.9 MΩ
40.00 MΩ
35 MΩ
Ω, Automatic Selection
1.000 µF
1.96 V dc
0.0 µF
1.000 µF
0.95 µF
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 50Ω divider override.
3. The dc volts annunciator must be on.
4. Conducting performance tests of the 400 Ω, 4 kΩ, 40 kΩ, and 1 µF 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 µF, 100 µF, 1000 µF, and 10,000 µF
ranges.
Table 4. Temperature Performance Tests
Input Voltage
Display Readings
°C
°F
0.0
0.919 mV
4.095 mV
0.0 ± 0.8
23.0 ± 1.0
100.0 ± 1.8
32.0 ± 1.5
73.4 ± 2.2
212.0 ± 3.6
8
Calibration Adjustments
Temperature
AK-80
+
5700A
Red
Yellow
Copper
+
Banana
Plug
0
Ice Bath
ig6f.eps
Figure 3. Performance Test for Temperature
Clip to Base Contacts
+
+
Input Receptacles
_
+
9V
Adjust R4 for 3.997-4.003V DC
BATTERY
ig1f.eps
Figure 4. Calibration Adjustment for DC Voltage
9
16
Multimeter with Temperature
4. Connect the other end of the thermocouple wire to the
Meter using a Fluke 80AK Adapter Plug (see Figure 6).
Allow the instrument reading to settle.
Temperature
Note
Adjust DC voltage (R4) before adjusting
temperature (R38).
5. Adjust R38 so that the Meter display has the same
reading of the ice bath temperature.
The following describes three temperature calibration
procedures:
Lag Bath Calibration
•
•
•
Calibrating at room temperature. Use this procedure if
it is not necessary to optimize the Meter’s performance.
The following adjustment optimizes the Meter’s
performance at room temperature using a specific
thermocouple.
Calibrating in an ice bath. Use this procedure to
optimize the Meter’s performance at around 0.0°C.
Calibrating in a lag bath. Use this procedure to
optimize the Meter’s performance at room temperature.
1. Put the Meter in the temperature function and °C
mode.
2. Insert a thermocouple in a lag bath (see Figure 6).
Room Temperature Calibration
The following procedure allows you to make the calibration
adjustment at room temperature.
3. Insert a mercury thermometer to the same depth as the
thermocouple wire to verify that the lag bath
temperature is at room temperature
4. Connect the other end of the thermocouple wire to the
Meter using an 80AK Adapter Plug(see Figure 6).
Allow the instrument reading to settle.
1. Allow the Meter to stabilize at room temperature. After
the temperature stabilizes, do not touch the COM jack.
2. Turn to temperature function and °C mode.
5. Adjust R38 so that the Meter display has the same
reading of the lag bath thermometer.
3. Observing the correct polarity, connect a copper short
across the input jacks of the Meter (see Figure 5).
Replacement Parts
Replacement parts are listed in Table 4 and shown in
Figure 1.
4. Using a temperature probe with the appropriate Meter
(Fluke 45 or equivalent), measure the temperature of
the COM input jack (see Figure 5). Be sure to place the
probe on the COM closest to the pca.
Table 4. Replacement Parts
5. Adjust R38 so the Meter display is the same as the
temperature probe reading.
Parts
Part No.
Window decal
Case, top
LCD
617974
617966
643541
867242
867247
618022
203445
879031
696534
618097
832246
885884
Ice Bath Calibration
The following procedure optimizes the Meter’s performance
near 0°C (32°F) using a specific thermocouple.
Connection elastomeric
Connection Elastomeric LCD to PCA
Switch assembly
1. Put the Meter in the temperature function and °C
mode.
Actuator, Switch
2. Insert a thermocouple in an ice bath (see
Figure 6).
Support, Switch Assembly
Battery
Case, Bottom assembly
Screw, THD Form, PH.P.STL, 5014 x .750
Foot
3. Insert a mercury thermometer to the same depth as the
thermocouple wire to verify that the ice bath
temperature is 0.0°C .
10
Replacement Parts
DUAL DISPLAY MULTIMETER
45
V
10A
FUSED
1000V
750V
MAX
m V
CAL
ENABLE
!
100
mA
COM
dB
2ND
V
V
A
A
REL
500mA
F
250V
REF#
REF
LOCAL
LL INPTS
1kV MX
AUTO
COMP
FREQ
HOLD
MN MX
RATE
HI
LO
THRESH ADDR
BAUD
POWER
Clip to Base Contacts
8
+
+
_
+
9V
BATTERY
R38
ig4f.eps
Figure 5. Calibration Adjustment for Temperature Using the 80T-150U
Thermometer
Ice or Lag Bath
Clip to Base Contacts
+
+
80AK
+
_
+
R38
9V
BATTERY
Thermocouple
ig5f.eps
Figure 6. Calibration Adjustment for Temperature Using an Ice or Lag Bath
11
16
Multimeter with Temperature
12
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