# 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.

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Handheld 4000-count digital multimeter for voltage, current to 10 A, resistance, capacitance, diode test and continuity. Rated CAT III 600 V by Fluke.

Every value cites its sourcePinout not published

[Buy on Compoden](https://compoden.com/products/fluke-15b-digital-multimeter)

## 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](https://app.soldr.ai/?prompt=I%20want%20to%20build%20a%20current%20draw%20check%20of%20an%20ESP32%20board%20with%20an%20OLED%20display%20using%20a%20Fluke%2015B%2B%20in%20series%20with%20the%205%20V%20feed%20from%20a%20buck%20converter%20and%20a%209%20V%20battery%20pack): 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](https://app.soldr.ai/?prompt=I%20want%20to%20build%20a%20battery%20pack%20health%20check%20measuring%20a%209%20V%20six-cell%20AA%20pack%20with%20a%20Fluke%2015B%2B%20while%20it%20powers%20an%20Arduino%20Uno%20and%20an%20LCD): 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](https://app.soldr.ai/?prompt=I%20want%20to%20build%20a%20parts%20check%20bench%20with%20a%20Fluke%2015B%2B%20to%20measure%20100%20nF%20capacitors%20and%20an%20LDR%20in%20light%20and%20in%20shadow): 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](https://media.fluke.com/b3348117-f004-46d2-869b-b10600686a7d_original%20file.pdf))
- 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](https://www.fluke.com/en-in/product/electrical-testing/digital-multimeters/fluke-15b-plus))
- Reading outside its stated conditions: accuracy is specified at 18 C to 28 C and up to 75 % humidity ([source](https://www.fluke.com/en-in/product/electrical-testing/digital-multimeters/fluke-15b-plus))

## 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.

## Sources

- [link](https://www.fluke.com/en-in/product/electrical-testing/digital-multimeters/fluke-15b-plus) (Fluke 15B+ product page, specifications)
- [link](https://media.fluke.com/b3348117-f004-46d2-869b-b10600686a7d_original%20file.pdf) (Fluke 15B+/17B+ Technical Data)