Fluke 15B+ multimeter: specs
Handheld 4000-count digital multimeter for voltage, current to 10 A, resistance, capacitance, diode test and continuity. Rated CAT III 600 V by Fluke.
Specs
| Spec | Value | Source |
|---|---|---|
| DC voltage | 400.0 mV to 1000 V in 5 ranges; accuracy 0.5 % + 3 (V), 1.0 % + 10 (400 mV) | source Specifications, Voltage |
| AC voltage | 4.000 V to 1000 V (40 Hz to 500 Hz); accuracy 1.0 % + 3 | source Specifications, Voltage |
| DC current | 400.0 uA, 4000 uA, 40.00 mA, 400.0 mA, 4.000 A, 10.00 A; accuracy 1.5 % + 3 | source Specifications, Current |
| Resistance | 400.0 ohm to 40.00 Mohm; accuracy 0.5 % + 3 to 1.5 % + 3 by range | source Specifications, Resistance |
| Capacitance | 40.00 nF to 1000 uF; accuracy 2 % + 5 (nF ranges), 5 % + 5 (uF ranges) | source Specifications, Capacitance |
| Accuracy basis | Plus-or-minus (% of reading + least significant digits), valid 1 year after calibration at 18 C to 28 C, 0 % to 75 % relative humidity | source Specifications, accuracy note |
| Safety rating | CAT III 600 V, IEC 61010-1 and IEC 61010-2-030, Pollution Degree 2; 1000 V maximum between any terminal and earth ground | source Specifications, Safety; datasheet Product highlights |
| Current input fuses | mA input: 440 mA, 1000 V fast fuse; A input: 11 A, 1000 V fast fuse (Fluke specified parts only) | source General specifications, Fuse protection for current inputs |
| Battery | 2 AA, 500 hours minimum battery life | source Specifications, Battery |
| Operating temperature | 0 C to 40 C (storage -30 C to 60 C) | source Specifications, Temperature |
Power
| Value | Source | |
|---|---|---|
| Supply | 2 x AA cells | source Specifications, Battery |
| Current | 500 hours minimum battery life | source Specifications, Battery |
Pinout
We don't publish a pin table for this part: no official source we could verify gives one. Check the labels printed on your module, and see the notes below.
A meter has no header; see the Fluke user manual for jack positions.
Build with it
Project ideas for the Fluke 15B+ multimeter. Each link opens Soldr with the prompt filled in; Soldr assigns the pins, checks power and shows how to wire every part.
- Current draw of an ESP32 project: Learning measurement task on a low-voltage circuit. Set the converter to 5.0 V first and check it with the meter. The mA input is fused at 440 mA and an ESP32 with Wi-Fi can pass bursts above that, so use the A input with the 4.000 A or 10.00 A range, not the mA input. Never connect the meter across the supply.
- Battery pack voltage under load: DC volts only on a 9 V pack, far below the 600 V rating. Compare unloaded and loaded readings to see the pack sag.
- Component check bench for capacitors and an LDR: The 400.0 nF range covers a 100 nF part (2 % + 5 accuracy plus lead capacitance); the resistance ranges cover the LDR. Remove parts from circuits first.
Common mistakes
- Using the wrong current input: the mA input is protected by a 440 mA fuse and the A input by an 11 A fuse, so a current above 440 mA through the mA input blows the fuse. Place the meter in series with the load only (source)
- Using it above its rating: CAT III 600 V and 1000 V maximum to earth ground; do not use it on mains wiring unless you are a qualified person (source)
- Reading outside its stated conditions: accuracy is specified at 18 C to 28 C and up to 75 % humidity (source)
Not covered by the official source
- Values are from the Fluke product page specification table; the technical data PDF is used for CAT III 600 V, the fuse ratings and the general specifications.