Fluke 18B+

Function

range

resolution

accuracy

AC voltage 
(40 Hz to 500 Hz) 1

4.000 V
40.00 V
400.0 V
1000 V

0.001V
0.01V
0.1V
1V

1.0 % + 3

DC voltage

4.000 V
40.00 V
400.0 V
1000 V

0.001V
0.01V
0.1V
1V

0.5 % + 3

AC voltage (millivolts)

400.0 mV

0.1 mV

3.0 % + 3

DC voltage (millivolts)

400.0 mV

0.1 mV

1.0 % + 10

Diode Test 2

2,000 V

0.001V

10%

Resistance 
(ohms)

400.0 Ω
4,000 kΩ
40.00 kΩ
400.0 kΩ
4,000 MΩ
40.00 MΩ

0.1 Ω
0.001 kΩ
0.01 kΩ
0.1 kΩ
0.001 MΩ
0.01 MΩ

0.5 % + 3
0.5 % + 2
0.5 % + 2
0.5 % + 2
0.5 % + 2
1.5% + 3

Capacitor 3

40.00 nF
400.0 nF
4,000 µF
40.00 µF
400.0 µF
1000 µF

0.01 nF
0.1 nF
0.001 µF
0.01 µF
0.1 µF
1 µF

2 % + 5
2 % + 5
5 % + 5
5 % + 5
5 % + 5
5 % + 5

Frequency 1
Hz
(10 Hz – 100 kHz)

50.00 Hz
500.0 Hz
5.000 kHz
50.00 kHz
100.0 kHz

0.01 Hz
0.1 Hz
0.001 kHz
0.01 kHz
0.1 kHz

0.1 % + 3

Duty cycle 1

1 % to 99 %

0.1 %

1% Typical Case 1  4

Alternating current μA
(40 Hz to 400 Hz)

400.0 μA
4000 μA

0.1 μA
1 μA

1.5 % + 3

Alternating current mA
(40 Hz to 400 Hz)

40.00mA
400.0mA

0.01mA
0.1mA

1.5 % + 3

Alternating current (A)
(40 Hz to 400 Hz)

4.000 A
10.00 A

0.001 A
0.01 A

1.5 % + 3

DC current μA

400.0 μA
4000 μA

0.1 μA
1 μA

1.5 % + 3

DC current mA

40.00mA
400.0mA

0.01mA
0.1mA

1.5 % + 3

DC current A

4.000 A
10.00 A

0.001 A
0.01 A

1.5 % + 3

1. All current, frequency, and duty cycle ranges from 1% to 100% of the range. Input values ​​below 1% of the range are not specified.
2. Typically, the open-circuit test voltage is 2.0 V, and the short-circuit current is <0.6 mA.
3. Specifications do not include errors caused by test lead capacitance and capacitor plate (maximum error of 1.5 nF at a 40 nF range).
4. Typically means a frequency of 50 Hz or 60 Hz and a duty cycle between 10% and 90%.

Function

Light emission range

Measurement range

resolution

accuracy

LED VF Test  1  (LED Test Socket)

1.00 to 6.00 V

THAT

THAT

THAT

LED VF Test  2  (Test Lead)

1.00 to 6.00 V

1.00 to 6.00 V

0.01V

10 % 3

On/off threshold

not applicable

not applicable

not applicable

70Ω

1.  Open circuit test voltage is ±12 V, short circuit current > ±5 mA (normal condition)
2.  Open circuit test voltage is ±12 V, short circuit current > ±3 mA (normal condition)
3.  VF measurement, drive current is less than 2.2 ±0.4 mA.

Function

Overload protection

Input impedance (nominal value)

Common-mode rejection ratio

Normal mode suppression ratio

AC voltage

1000 in  1

>10 MΩ <100 pF

At DC current, at 50 Hz or 60 Hz, greater than 60 dB

-

AC voltage (millivolts)

400 mV

>1MΩ, <100pF

At 50 Hz or 60 Hz, greater than 80 dB

-

DC voltage

1000 in  1

>10 MΩ <100 pF

At DC current, at 50 Hz or 60 Hz, greater than 100 dB

At 50 Hz or 60 Hz, greater than 60 dB

DC voltage (millivolts)

400 mV

>1MΩ, <100pF

At 50 Hz or 60 Hz, greater than 80 dB

-

1  10 6  V Hz Maximum value

General technical specifications

The highest voltage between any terminal and ground

1000V

Display Screen (LCD)

4000 counts, updated 3 times per second

Battery Type

2 AA, NEDA 15A, IEC LR6

Battery lifespan

Minimum 500 hours (50 hours in LED test mode without load. Under load, battery life depends on the type of LED being tested.)

temperature

Operating temperature

0 °C to 40 °C

Storage temperature

-30 °C to 60 °C

relative humidity

Operating humidity

Non-condensing (<10°C): 10°C to 30°C, ≤90% RH; 30°C to 40°C, ≤75% RH.

40 MΩ, ≤80% RH for 10 °C to 30 °C; ≤70% RH for 30 °C to 40 °C.

altitude

Operating temperature

2000 m

Storage temperature

12,000 m

Temperature coefficient

0.1 x (specified precision) /°C (<18 °C or >28 °C)

Fuse protection for current input

440 mA, 1000 V fast fuse, for specified Fluke parts only. 11 A, 1000 V fast fuse, for specified Fluke parts only.

Volume (height x width x length)

183 x 91 x 49.5 mm

weight

455 g

IP Class

IP 40

Security

IEC 61010-1, IEC61010-2-030 600 V CAT III, 1000 V CAT II, ​​Pollution Degree 2

Electromagnetic environment

IEC 61326-1: Portable