
PRECISION DEADWEIGHT TESTERS
0.1% ACCURACY; 15 to 10,000 psi
DWT1305 Series
Optional*
U Easy-to-Use 2-Stage
Hydraulic Pump
U 2 Interchangeable
Piston/Cylinder
Assemblies
U Vernier Screw Adjustment
for Pressure Settings
U Portable—Rugged
Carrying Case Provided
Each Unit Includes
U Hydraulic Pump
U Weight Set
U 2 Piston/Cylinder
Assemblies
U 3 Wrenches
U Spare O-Rings
U Piping and Fittings
U Rugged Carrying Case
U Operator’s Manual
U Optional NIST-Traceable
Calibration
DWT1305 deadweight testers
are dual-range, precision-built
hydraulic instruments for testing,
setting, calibrating, or repairing
pressure-measuring devices.
Each instrument is self-contained
and comes with tools and metal
carrying case.
With the optional “-CAL-3”
calibration, the DWT1305 can
be a primary standard with 0.1%
accuracy of the pressure produced.
Each unit is adjusted for standard
gravity conditions, all weights are
labeled, and an NIST-traceable
certification is supplied.
For optimal accuracy, deviation
from standard gravity conditions
must be applied to the readings.
Each unit comes with 2
interchangeable piston and
cylinder assemblies. One is for
DWT1305D-30, shown
smaller than actual
size, comes complete
as shown.
low pressure (below 2000 psi/
14,000 kPa); the other is for
high pressure (through 10,000 psi/
70,000 kPa). The same weights are
used with both pistons.
SPECIFICATIONS
Accuracy: 0.1% of produced pressure
Operating Pressure: 15 to 10,000 psi
(100 to 70,000 kPa)
Body Material: Aluminum alloy
Piston and Cylinder Material:
Stainless steel
Weights: Non-magnetic die-cast zinc
alloy, NBS traceable
Operating Fluid: SAE 20 automotive
or machine oil
“O” Rings: Standard Buna-N
Reservoir Volume: Approximately
0.7 liter (1.5 pints)
A
PRESSURE INSTRUMENTS
To Order
PISTON ASSEMBLY PISTON NUMBER OF WEIGHTS BY VALUE
MODEL NO. PRESSURE RANGE VALUE L-5 L-10 L-20 L-40 L-100 NET WT.
psi TYPE LOW HIGH LOW HIGH H-25 H-50 H-100 H-200 H-500
DWT1305D-10 15/200 75/1000 5 25 1 3 2 3 — 60 27
DWT1305D-20 15/400 75/2000 5 25 1 3 2 3 2 70 32
DWT1305D-30 15/600 75/3000 5 25 1 3 2 3 4 85 39
DWT1305D-50 15/1000 75/5000 5 25 1 3 2 3 8 105 48
DWT1305D-100 15/2000 75/10,000 5 25 1 3 2 3 18 175 80
DWT1305D-10-CAL-3
DWT1305D-20-CAL-3
DWT1305D-30-CAL-3
DWT1305D-50-CAL-3
DWT1305D-100-CAL-3
Comes complete with pump, weights, piston assemblies (2), o-rings, piping/fittings, wrenches, case and operator’s manual.
Units with “-CAL-3” suffix feature NIST traceable calibration as a primary standard.
*
Ordering Examples: DWT1305D-100-CAL-3, tester with 15 to 10,000 psi range with NIST-traceable calibration.
DWT1305D-50, tester with 15 to 5000 psi range.
15/200 75/1000 5 25 1 3 2 3 — 60 27
*
15/400 75/2000 5 25 1 3 2 3 2 70 32
*
15/600 75/3000 5 25 1 3 2 3 4 85 39
*
15/1000 75/5000 5 25 1 3 2 3 8 105 48
*
15/2000 75/10,000 5 25 1 3 2 3 18 175 80
*
A-50
lb kg