The Fluke 787 and its updated version, the Fluke 787B, are both process meters designed for technicians who need the power of a digital multimeter combined with the ability to source and measure mA signals.
These tools are especially popular in process control, instrumentation, and calibration work. If you’re unsure whether to stick with the original 787 or go for the upgraded 787B, this guide will break down the key differences.
📋 Overview of Both Models
Fluke 787
- Combines a full-featured 1000 V digital multimeter with a loop calibrator.
- Capable of sourcing, simulating, and measuring mA signals.
- A trusted model that’s been in the field for decades.
Fluke 787B
- The enhanced version of the 787, offering the same core functionality but with added improvements.
- Features a larger, clearer display with two levels of backlighting.
- Improved battery access and better ergonomics.
📊 Comparison Table
| Feature | Fluke 787 | Fluke 787B |
|---|---|---|
| DC Voltage Accuracy | ±0.1% | ±0.05% |
| AC Voltage Accuracy | ±0.5% | ±0.2% |
| mA Source Range | 0–20 mA | 0–20 mA |
| Loop Power | Yes (24 V) | Yes (24 V) |
| Backlight | Single level | Two-level backlight |
| Battery Access | Requires opening case | Separate battery door |
| Display | Smaller, simpler | Larger, clearer |
| Safety Rating | CAT III 1000 V | CAT III 1000 V |
| Weight | ~500 g | ~500 g |
| Price Range | Lower | Higher |
✅ Pros and Cons
Fluke 787 – Pros
- Proven reliability with a long track record.
- Combines DMM and loop calibrator functions.
- Lower cost compared to the 787B.
Fluke 787 – Cons
- Less accurate than the 787B.
- Smaller display, harder to read in low light.
- Battery replacement requires case disassembly.
Fluke 787B – Pros
- Improved accuracy for both DC and AC voltage measurements.
- Larger display with dual-level backlight for better readability.
- Easy battery access with a separate compartment.
- Enhanced ergonomics for everyday use.
Fluke 787B – Cons
- Higher price.
- Functionally similar to the 787—mainly incremental upgrades.
🎯 Which One Should You Buy?
- Choose the Fluke 787 if you’re looking for a cost-effective, reliable process meter and don’t mind the older display or slightly less accuracy.
- Choose the Fluke 787B if you want a more modern tool with improved visibility, easier battery replacement, and higher accuracy, especially if you’ll use it daily in demanding conditions.
Both models are excellent for technicians in process control and calibration, but the Fluke 787B is clearly the better choice if budget isn’t your primary concern.