Druck DPI 330, DPI 335 Data sheet

GE

Sensing

Druck Portable High
Pressure Hydraulic
Calibrators

g

• High accuracy 0.025% full scale (FS)

• Generates pressures up to 10,000 psi (700 bar)

• Dual pressure and electrical readout

• Thermal compensator for high speed stable control

• Unique vacuum priming of hydraulic system

• RS232 interface and documenting versions

The DPI 330/335 Series is designed to make the
calibration of hydraulic systems and instrumentation
quick and simple. Two versions are available, the DPI 330
and the DPI 335. The DPI 330 is the standard model with
RS232 interface and the DPI 335 has full documenting
capability.

These self-contained portable calibrators provide
unparalleled accuracy and performance. Hydraulic
pressures up to 10,000 psi (700 bar) can be generated
quickly and easily with excellent setpoint control.

Features

DPI 330/335 Series is a Druck
product. Druck has joined other GE
high-technology sensing
businesses under a new name–
GE Industrial, Sensing.

DPI 330/335 Series

Unique Priming System

The DPI 330/335 uses a unique priming system to
conveniently fill the hydraulic system under test . The
pressure/vacuum selector valve, combined with the
priming pump, first evacuates the system and then fills
the system with fluid from the reservoir and generates
the initial pressure. Once the system is primed, any
desired pressure can be easily set using the pressure
pump and volume adjuster.

Excellent Control Stability

The thermal compensator eliminates adiabatic thermal
effects which are generated by pressure changes within
the hydraulic system. This innovative feature holds the
generated pressure steady while a nudge facility allows
the exact pressure to be set. Overall test/calibration time
and precision is significantly improved.

Dual Channel Display

The DPI 330/335 are dual channel instruments able to
display the input and output values simultaneously. The
calibrators are capable of providing current and voltage
excitation to the device under test and can measure DC.
voltage, DC current and ambient temperature. Electrical
terminations are made via industry standard 4 mm
sockets and the large backlit display provides a clear
readout of the process parameters.

Application Specific Task Menu

A dedicated task key provides instant access to the task
menu permitting the calibrator to be configured for
specific applications. For example, the P-I task configures

the calibrator to source pressure and measure current.
24 VDC loop power is also available to allow complete
pressure transmitter calibration. Running the Pressure
Switch task captures the open and closed switch values
and calculates switch hysteresis. The contact resistance
of the switch can also be monitored.

Reduced Process Downtime

The DPI 335 version enables calibration criteria to be
easily entered via the keypad allowing fast diagnosis of
field instruments and automatic reporting of errors with a
Pass or Fail status. When used in conjunction with i4i
(Intecal for Industry) calibration management software,
test procedures can be downloaded to the DPI 335 from
a PC. The calibrator will prompt the technician during the
calibration routine and the results will be recorded
electronically, reducing plant downtime and human
errors.

GE

Sensing

Rugged transit case

High contrast,

menu-driven dual

function display

Thermal
compensator
control panel

1/8 NPT or BSP

test port

Volume adjuster

Pressure pump

Priming pump

Pressure/

vacuum

selector valve

Reservoir

Remote

sensor

connection