Fluke 718 300G Pressure Calibrator

The Fluke 718 300G Pressure Calibrator is a portable instrument for calibrating pressure transmitters and switches in the field. It sources pressure to 300 psi while simultaneously measuring 4–20 mA loops, eliminating the need for separate tools. An integrated hand pump with fine adjustment knob enables precise pressure setting, and the easy-to-clean, field-serviceable pump design reduces downtime and maintenance costs.

– Technical Specifications

Pressure Range & Accuracy:
• Sourcing and measurement: –12 psi to 300 psi (–850 mbar to 20 bar, –85 to 2068.42 kPa)
• Resolution: 0.01 psi, 1 mbar, 0.1 kPa
• Accuracy (internal sensor): 0.025% of full scale, 0.05% of full scale
• Overpressure limit: 375 psi, 25 bar
• Units supported: psi, inH₂O (4°C), inH₂O (20°C), cmH₂O (4°C), cmH₂O (20°C), bar, mbar, kPa, inHg, mmHg, kg/cm²
• Media: Dry air and non-corrosive gases only

Current Measurement:
• Loop accuracy: 0.015%
• Supply voltage: 24 V DC
• Drive capability: 20 mA into 1000 Ω (battery > 6.8 V); 700 Ω (battery 5.8 to 6.8 V)

Power:
• Battery: One or two 9 V alkaline batteries (ANSI/NEDA 1604A or IEC 6LR61)
• Runtime: 4 to 20 hours typical
• Maximum non-operating voltage: 30 V

Environmental:
• Operating temperature: –10°C to 55°C
• Storage temperature: –40°C to 60°C
• Dimensions: 216 × 94 × 66 mm (8.50 × 3.72 × 2.60 inches)
• Weight: 992 g (35 oz)
• 1 M drop tested; vibration rated 2 g, 5 Hz–500 Hz

– Key Features

• Simultaneous pressure sourcing and mA loop measurement
• Integrated switch test function with error % calculation for pass/fail decisions
• Zero, Min, Max, Hold, and Damp operating modes
• Dual display shows pressure and current concurrently
• Check-valve–protected pump inhibits fluid ingress

– Typical Applications

• Pressure transmitter calibration and verification
• 4–20 mA loop testing and diagnostics
• Pressure switch setting and functional validation
• Field service and maintenance of industrial instrumentation

– Compatibility & Integration

The 718 300G accepts Fluke 700 Series and 750P Series Pressure Modules, extending measurement capabilities across a wider range of pressures and media types. Supplied with protective holster, TL75 test leads, and alligator clips.