M3800 SeriesHigh Pressure HydraulicDeadweight Testers
Models M3830,
M3840 and M3860
The Pressurements M3800
Series is the culmination ofover 50 years experience in thedesign and manufacture of primary pressure standards. Withfeatures and options designed
to improve accuracy, increase
reliability, and simplify operation, the M3800 Series can beused to calibrate virtually any
high pressure sensing device
including transducers, transmitters, gauges or pressure
switches.

Features• Three models available in ranges from
30 000 psi to 60 000 psi (2 000 bar to4 000 bar)
• Two accuracy classes available; 0.02 %or 0.015 % of Reading• Select nominal increments in PSI, Bar,kgf/cm2 and MPa pressure units• NIST traceable calibration certificate
standard, Accredited ISO/IEC 17025
available• Presscal software• P3000 Series available for pressure/vacuum ranges and hydraulic pressures
to 20 000 psi (1 400 bar) and below

Technical Data

Piston/cylinder
The piston/cylinder is the“heart” of the deadweighttester. M3800 Series pistons
are manufactured from tungsten carbide which provides
excellent long term stability,durability, and extremely low
coefficients for temperature andpressure.

Weight sets

Standard weight masses areseries 3 non-magnetic stainless steel. Each mass is marked
Instrument basewith the serial number of theThe Instrument base includes
instrument and the nominal
all items required for operation.
pressure value. Select either
A high quality hand pump isPSI, bar kgf/cm2 or MPa prescoupled to a 7 to 1 intensisure units. Presscal software
fier, allowing the operator to
can be used to support addieasily generate high pressuretional pressure units.
in the system. An oil reservoir
is included so the pump to beGravity correction
re-charged when calibrating
Gravity varies significantly withlarge volume devices. A Test
Station is provided for connect- geographical locations. Each
instrument can be calibrated
ing the Device under Test toto local gravity a no additional
the M3800 Series. Adjustablecost. If unspecified, instruments
feet and the level vial allow
are calibrated to standard
the operator to insure thegravity at 980.665 cm/s2.
instrument is level to achieve
the ultimate performance. A
Piston Float Reference allows
the operator to determine when
the piston is in the ideal, “midfloat” position.

Specifications
Pressure ranges
M3830

500 psi to 30 000 psi, or 40 bar to 2 000 bar, or 4 MPa to 200 MPa, or 40 kgf/cm2 to 2 000 kgf/cm2

M3840

500 psi to 40 000 psi, or 40 bar to 2 600 bar, or 4 MPa to 260 MPa, or 40 kgf/cm2 to 2 600 kgf/cm2

M3860

500 psi to 60 000 psi or 40 bar to 4 000 bar or 4 MPa to 400 MPa or 40 kgf/cm2 to 4 000 kgf/cm2

AccuracyStandard accuracy is 0.02 % of Reading*. Optional accuracy of 0.015 % of Reading is available. Calibration
certificate with traceability to NIST is provided with each instrument. An optional ISO/IEC 17025 accredited
calibration certificate is available.
*Accuracy is based on % of Reading from 10 % to 100 % of the piston range when used in accordance withthe 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

Piston material

Tungsten carbide with nickel binder

Cylinder material

Tungsten carbide with cobalt binder

Thermal coefficient ofexpansion

11 ppm/°C

GeneralTest port adaptors

9/16 in – 18 UNF (Autoclave); 3/8 in BSP; 1/2 in BSP and 3/4 in BSP

Weight30 Kg (66 lb) Instrument base only

Dimensions (W x D x H)

455 mm X 340 mm X 478 mm (18 in X 13.5 in X 19 in)Reservoir volume

235 cm3 (14.3 in3)

Intensifier ratio

7 to 1

Seal materials

NitrileOperating Fluid

Dioctyl Sebacate (DOS), our reference 55-600

Ordering information
ModelsM3830 High Pressure Hydraulic Deadweight Tester, 500 to 30 000 psiM3840 High Pressure Hydraulic Deadweight Tester. 500 to 40 000 psi
M3860 High Pressure Hydraulic Deadweight Tester, 500 to 60 000 psi
Options
A. PressCal Software Windows-based software program that allows users
to easily apply all necessary corrections to enhance the deadweight tester
performance. Supports additional 12 pressure units (bar, mbar, MPa, kPa, psi,
kg/cm2, atm, inH2O, mH2O, mmH2O, inHg, mmHg).
Conversion Weight Sets For applications that require nominal pressure
increments in measurement units different than the main unit, conversion
weight sets are available. Available measurement units are: PSI, bar kgf/cm2or MPa.

Fluke. Keeping your world
up and running.®
Fluke Calibration
PO Box 9090, Everett, WA 98206 U.S.A.
Fluke Europe B.V.
PO Box 1186, 5602 BD
Eindhoven, The Netherlands
For more information call:In the U.S.A. (800) 443-5853 or
Fax (425) 446-5116
In Europe/M-East/Africa +31 (0) 40 2675 200 or
Fax +31 (0) 40 2675 222
In Canada (800)-36-FLUKE or
Fax (905) 890-6866
From other countries +1 (425) 446-5500 or
Fax +1 (425) 446-5116
Web access: http://www.fluke.com©2010 Fluke Calibration.
Specifications subject to change without notice.
Printed in U.S.A. 7/2010 3833630A D-EN-N

2   Fluke Calibration

M3800 Series High Pressure Hydraulic Deadweight Testers

Modification of this document is not permitted
without written permission from Fluke Calibration.