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The P3000 Hydraulic Deadweight Tester.
Pressure ranges:
Oil operated:  Ranges to 20,000 psi (1400 bar)
Distilled water operated: Ranges to 10,000 psi (700 bar)

The P3000 Series Deadweight tester is the culmination of over 50 years experience in the production
and design of primary pressure standards.
With features designed to improve accuracy and performance, increase reliability and simplify operation
these deadweight testers can be used to calibrate virtually any pressure sensing device, including
transducers, transmitters, gauges or pressure switches.

Hydraulic deadweight tester.

Model  Description 
P31XXX-X  Hydraulic Deadweight Tester.

Pressure ranges to 20,000 psi (1400 bar)
Accuracy better than 0.025% of reading.
Increased accuracy option of 0.015%
Dual vacuum/pressure models available
Psi, bar, kgf/cm2, kPa and MPa ranges available
Piston/cylinder design provides stability and repeatability
High quality needle valves provide optimum control
Mounted spirit level and adjustable feet
Improved case with spring-loaded latches for hood
Sturdy weight box with hinged lid and side handles for easy transport

Each deadweight tester is supplied with a detachable lid that makes it neat, compact, and easily portable.
The weight masses are stored in a high-quality case with a self-locking mechanism to protect them
during transit.
All DWTs are provided with a traceable certificate of accuracy, weight mass details, 1/8, 1/4,
3/8, and 1/2 NPT or BSP female adaptors, operating fluid (where applicable), and spare seals.

Hydraulic Deadweight Testers Models
Oil Operated - Single PCU
Model Pressure range Model Pressure range
P3111-1
P3111-2
P3111-3
P3111-4
P3111-5
1 to 35 bar
1 to 35 kgf/cm2
10 to 500 psi
100 to 3,500 kPa
0.1 to 3.5 MPa
P3112-1
P3112-2
P3112-3
P3112-4
P3112-5
4 to 140 bar
4 to 140 kgf/cm2
40 to 2,000 psi
400 to 14,000 kPa
0.4 to 14 MPa
     
P3113-1
P3113-2
P3113-3
P3113-4
P3113-5
10 to 350 bar
10 to 350 kgf/cm2
100 to 5,000 psi
1000 to 35,000 kPa
1 to 35 MPa
P3114-1
P3114-2
P3114-3
P3114-4
P3114-5
20 to 700 bar
20 to 700 kgf/cm2
200 to 10,000 psi
2,000 to 70,000 kPa
2 to 70 MPa
       
P3115-1
P3115-2
P3115-3
P3115-4
P3115-5
20 to 1,100 bar
20 to 1,100 kgf/cm2
200 to 16,000 psi
2,000 to 110,000 kPa
2 to 110 MPa
P3116-1
P3116-2
P3116-3
P3116-4
P3116-5
20 to 1,400 bar
20 to 1,400 kgf/cm2
200 to 20,000 psi
2,000 to 140,000 kPa
2 to 140 MPa
Oil Operated - Dual PCU
Model Pressure range Model Pressure range
P3123-1
P3123-2
P3123-3
P3123-4
P3123-5
1 to 350 bar
1 to 350 kgf/cm2
10 to 5000 psi
100 to 35000 kPa
0.1 to 35 MPa
P3124-1
P3124-2
P3124-3
P3124-4
P3124-5
1 to 700 bar
1 to 700 kgf/cm2
10 to 10,000 psi
100 to 70,000 kPa
0.1 to 70 MPa
     
P3125-1
P3125-2
P3125-3
P3125-4
P3125-5
1 to 1,100 bar
1 to 1,100 kgf/cm2
10 to 16,000 psi
100 to 110,000 kPa
0.1 to 110 MPa
   
Water Operated - Single PCU
Model Pressure range Model Pressure range
P3211-1
P3211-2
P3211-3
P3211-4
P3211-5
1 to 35 bar
1 to 35 kgf/cm2
10 to 500 psi
100 to 3,500 kPa
0.1 to 3.5 MPa
P3213-1
P3213-2
P3213-3
P3213-4
P3213-5
10 to 350 bar
10 to 350 kgf/cm2
100 to 5,000 psi
1000 to 35,000 kPa
1 to 35 MPa
     
P3214-1
P3214-2
P3214-3
P3214-4
P3214-5
20 to 700 bar
20 to 700 kgf/cm2
200 to 10,000 psi
2,000 to 70,000 kPa
2 to 70 MPa
   
Water Operated - Dual PCU
Model Pressure range Model Pressure range
P3223-1
P3223-2
P3223-3
P3223-4
P3223-5
1 to 350 bar
1 to 350 kgf/cm2
10 to 5,000 psi
100 to 35,000 kPa
0.1 to 35 MPa
P3224-1
P3224-2
P3224-3
P3224-4
P3224-5
1 to 700 bar
1 to 700 kgf/cm2
10 to 10,000 psi
100 to 70,000 kPa
0.1 to 70 MPa

Accuracy* ±0.025% of reading (±0.015% 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.
Operating Fluids Mineral oil Shell spindle oil 22, our reference 55-655, viscosity 40 cs@ 20°C
Distilled or deionized water

Materials of construction
Materials of Construction
Standard weight material
Weight density
Optional fractional weights
Weight density
Series 2 non-magnetic austenitic stainless steel
7.8 g/cm3
Solution heat treated aluminum
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/degC
Water (above 500 psi, 35 bar) 11 ppm/degC
General
Test port adaptors 1/8, 1/4, 3/8 and 1/2 NPT or BSP
Instrument weight 26 lbs (16 kg)
Instrument size (W x D x H) 17.5 in x 12 in x 8,5 in
Mass set weight (typical) 80 lbs (36 kg)
Reservoir volume 150 cc
Screw press displacement 5.5 cc
Pump displacement 4.7 cc per stroke
O-ring seal materials Buna N as standard, Viton and EPDM available
Minimum Standard Weight Increments
Up to 500 psi (35 bar)
500 to 20,000 psi (350 to 1400 bar)
5000 to 20,000 psi (350 to 1400 bar)
Model S3112

1 psi (0.1 bar)
10 psi (1 bar)
20 psi (2 bar)
1 psi ((0.1 bar)

Optional Fractional weights
Up to 500 psi (35 bar)
500 to 20,000 psi (350 to 1400 bar)
5000 to 20,000 psi (350 to 1400 bar)
0.1 psi (0.01 bar)
1 psi (0.1 bar)
2 psi (0.2 bar)