# Fluke Calibration P3125XT-BAR 1 to 1,200 bar Dual Piston Hydraulic Deadweight Tester # Fluke Calibration P3125XT-BAR 1 to 1,200 bar Dual Piston Hydraulic Deadweight Tester ## Key Features At A Glance - Pressure ranges to 20,000 psi (1,400 bar) on oil-operated models; to 10,000 psi (700 bar) on water-operated models - Accuracy of ±0.015% of reading standard, with optional ±0.008% improved accuracy configuration - Mineral oil (P3100) and distilled water (P3200) operating fluid variants to match application requirements - Dual piston models extend calibration coverage across a wide pressure range from a single instrument - Built-in lever-style hand pump standard on all hydraulic models for system priming and large-volume requirements - Test station design with O-rings — eliminates need for PTFE tape or wrenches when connecting devices under test - Pressure units available in psi, bar, kgf/cm², kPa, and MPa across the model range - Each unit ships with ISO/IEC 17025 accredited calibration report on the piston/cylinder assembly 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. Model Pressure Range Operating Fluid PCU Configuration **P3125XT-BAR** 1 to 1,200 bar Mineral oil Dual PCU P3111-BAR 1 to 35 bar Mineral oil Single PCU P3111-KGCM2 1 to 35 kgf/cm² Mineral oil Single PCU P3111-PSI 10 to 500 psi Mineral oil Single PCU 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 - Operating fluid (where applicable) - Spare seals ## Product Core & Specifications Specification Value Pressure ranges Oil operated Ranges to 20,000 psi (1,400 bar) Distilled water operated Ranges to 10,000 psi (700 bar) Accuracy ± 0.015 % of reading (± 0.008 % optional). Accuracy based on % of reading from 10 % to 100 % of the piston range when used in accordance with the corrections found on the calibration certificate. Below 10 % ± (accuracy class) x 10 % of the piston range. Materials of construction Standard weight material Series 3 non-magnetic austenitic stainless steel. Density: 7.8 g/cm³ Optional fractional weights Solution heat treated aluminum. Density: 2.7 g/cm³ Piston material Tungsten carbide with nickel binder. Density: 15.0 g/cm³ Cylinder material Hardened martensitic steel; Tungsten carbide (water above 500 psi, 35 bar) Thermal coefficients of expansion Oil piston/cylinder 16.5 ppm/°C; Water (above 500 psi, 35 bar) 11 ppm/°C General Test port adaptors M14 x 1.5, M20 x 1.5, 1/8 in, 1/4 in, 3/8 in and 1/2 in NPT and BSP Weight 16 kg (36 lb) Dimensions (W x D x H) 440 mm x 300 mm x 215 mm (17.5 in x 12 in x 8.5 in) Mass set weight (typical) 36 kg (80 lb) Reservoir volume 150 cm³ (9.2 in³) Screw press displacement 5.5 cm³ (0.34 in³) Pump displacement 4.7 cm³ (0.29 in³) per stroke O-ring seal materials Viton® Minimum standard weight increments Up to 500 psi (35 bar) 1 psi (0.1 bar) 500 psi to 5,000 psi (35 bar to 350 bar) 10 psi (1 bar) 5,000 psi to 20,000 psi (350 bar to 1,400 bar) 20 psi (2 bar) Model P3112 1 psi (0.1 bar) Optional fractional weights Up to 500 psi (35 bar) 0.1 psi (0.01 bar) 500 psi to 5,000 psi (35 bar to 350 bar) 1 psi (0.1 bar) 5,000 psi to 20,000 psi (350 bar to 1,400 bar) 2 psi (0.2 bar) Operating fluids Mineral oil Shell spindle oil 22, reference 55-655, viscosity 40 cs @ 20 °C (68 °F) Water Distilled or deionized water **Important:** Mineral oil P3100 models operate to 20,000 psi (1,400 bar); distilled water P3200 models operate to 10,000 psi (700 bar). Confirm operating fluid before ordering — the two model families are not interchangeable in application.**Important:** Accuracy is based on % of reading from 10 % to 100 % of the piston range when used in accordance with the corrections found on the calibration certificate. Below 10 % of range, accuracy is ± (accuracy class) x 10 % of the piston range.**Important:** Improved Accuracy (0.008 %) requires PressCal Windows-based software to apply all necessary corrections. PressCal is provided as standard with all 0.008 % instruments.**Important:** Each instrument can be trimmed to local gravity at no extra cost. If unspecified, instruments will be calibrated to Standard Gravity at 980.665 cm/s².**Important:** Cylinder material for water-operated units above 500 psi (35 bar) is tungsten carbide.Recommended pairing: when ordering a P3000 Series unit, specify the deployment latitude and elevation so the instrument can be trimmed to local gravity at no extra cost. If unspecified, the unit is calibrated to Standard Gravity at 980.665 cm/s². **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.** ## Details - **Price:** 19395.65 USD - **Vendor:** Fluke Calibration - **Type:** Cal Kit - **Tags:** Calibrator, Fluke, Manufacturers, Other Equipment, Pressure, product_manual_group_2, Product_new ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 19395.65 USD | In stock | ## Images - P3125XT-BAR Fluke Pressure Calibrator --- > Source: [ValueTronics](https://valuetronics.com/products/p3125xt-bar-fluke-pressure-calibrator-new) > Updated: 2026-05-30