The Fluke Calibration P3000 Series is a family of hydraulic deadweight testers used as primary pressure standards for calibrating pressure-sensing devices including transducers, transmitters, gauges, and pressure switches. The series comprises the P3100 mineral-oil-operated models and the P3200 distilled-water-operated models, with configurations spanning single piston-cylinder units (PCU) and dual-PCU instruments. The product represents the culmination of over 50 years of experience in the design and production of primary pressure standards.

The P3000 Series operates on the piston-gauge principle: a vertically mounted, precision-lapped piston and cylinder assembly supports calibrated weight masses, and the upward force generated by system pressure balances those weights when the piston is correctly spinning and floating within its cylinder. Pressure is calculated as the summation of the weight masses plus the piston weight carrier assembly divided by the effective piston area. This makes the deadweight tester the primary standard against which other pressure measurement devices are calibrated.

ValueTronics International stocks, inspects, and supports Fluke Calibration P3000 Series deadweight testers from our 20,000 sq ft secure warehouse at 1675 Cambridge Drive, Elgin, Illinois. Every unit we sell — new through our authorized distribution channels or verified used — passes through our technician verification process before shipment, and we maintain the documentation and accessory tracking that primary-standard customers expect when an instrument enters their calibration chain.

Compare Other Models in This Series

The P3000 Series spans two operating-fluid families — the P3100 mineral-oil models and the P3200 distilled-water models — with each family further divided into single piston-cylinder unit (PCU) configurations and dual-PCU configurations that combine a low-pressure and a high-pressure piston in one base for wide-range coverage. Within each configuration, individual model numbers correspond to a specific pressure range and a specific engineering unit (psi, bar, kgf/cm², kPa, or MPa) indicated by the model-number suffix.

Oil-operated single-PCU models run from the P3111 at 1 to 35 bar / 10 to 500 psi up through the P3116 at 20 to 1,400 bar / 200 to 20,000 psi. Oil-operated dual-PCU models span the P3123 at 1 to 350 bar / 10 to 5,000 psi up through the P3125XT at 1 to 1,200 bar. Water-operated single-PCU models are offered as the P3211, P3213, and P3214 covering 1 to 700 bar maximum; water-operated dual-PCU models are the P3223 and P3224 covering 1 to 700 bar maximum.

Each new model below is listed on its own dedicated product page with condition-matched pricing and the appropriate accessory and calibration documentation set. Select the model that matches the operating fluid your application requires (oil or water), the pressure range your devices under test occupy, and the engineering unit your calibration program standardizes on.

The primary differentiators across the family are operating fluid (oil vs. water), pressure range (single-PCU models cover a focused range; dual-PCU models cover a wide range from one instrument), and engineering unit. Oil-operated models reach the highest pressures in the series — to 20,000 psi (1,400 bar) on the P3116 — while water-operated models are capped at 10,000 psi (700 bar) on the P3214 and P3224. Water is used where the calibration program requires it; oil is the default for higher-pressure work.

Within the oil-operated configurations, the P3112 single-PCU model is noted as having 1 psi (0.1 bar) standard weight increments throughout its 40 to 2,000 psi range, finer than the standard 10 psi (1 bar) increments that apply to most single-PCU models in the 500 psi to 5,000 psi (35 bar to 350 bar) band. The comparison table that follows lists each available model with its pressure range and engineering unit so the right configuration for your application is straightforward to identify.

Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below.

Accessories Supplied

• Accredited calibration report
• Weight mass details
• M14 x 1.5 female adaptor
• M20 x 1.5 female adaptor
• 1/8 inch NPT and BSP female adaptors
• 1/4 inch NPT and BSP female adaptors
• 3/8 inch NPT and BSP female adaptors
• 1/2 inch NPT and BSP female adaptors
• Spare seals

Product Core & Specifications

Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.