Fluke 789 Multi-Function Calibrator, 1, 1000V ac 50 mm 203 mm 100mm

Fluke Multi-Function Calibrator, 1000V Maximum Voltage Measurement, 30mA Maximum Current Measurement - FLK-789/IR3000FC

This multi-function calibrator combines a safety-rated digital multimeter with mA loop sourcing and simulation for field and workshop use. It is designed for technicians working on current-loop instruments and general electrical measurements, offering true‑rms voltage readings, frequency measurement to 20 kHz and HART-capable loop functions when used with the specified Interface module.

Features & Benefits

• 0.02%+2 accuracy for high-precision calibration work
  20.000 mA source with 1 mA resolution for loop testing
  24V loop power supply to energise transmitter circuits
  CAT IV 600V and CAT III 1000V safety for industrial sites
  Up to 140 h measurement battery life for extended field shifts
  HART port compatibility enabling communication with HART instruments

**Applications**

• Suitable for commissioning and calibrating current-loop transmitters
  Used for routine process control loop troubleshooting
  Ideal for field checks of true‑rms voltage and frequency measurements
  Can be used for bench verification of mA sources and simulators
  Used with HART instruments when paired with the wireless adaptor

What battery arrangement does it use and how does that affect logistics?

It runs on four AA alkaline cells, enabling easy swaps on site and compatibility with commonly stocked batteries.

What is the instrument’s maximum current and associated drive capability?

The maximum measurable and sourced current is 30 mA with 24V compliance and the Ability to drive typical loop impedances for calibration.

How does it perform across temperature extremes?

It operates between -20 °C and 55 °C with specified temperature coefficients outside 18–28 °C to maintain accuracy.

Which approvals cover its use in regulated environments?

It carries CSA, IC, FCC and CE approvals and meets IEC 61010 safety standards suitable for industrial applications.

How is wireless data logging achieved without built-in radio hardware?

Wireless logging requires the compatible IR3000FC adaptor to enable Fluke Connect® functionality for remote monitoring and data transfer.