Atec DPI515-A, DPI515-B2 User Manual

GE

Sensing

Features

• Pressure ranges 10 inH20 to 3000 psig (210 bar)

• Precision 0.01% Full Scale (FS)

• Control stability 0.001% of span

• User friendly, high-speed control

• Unique, patented control system

• RS232 and IEEE 488 communications

The DPI 515 high-speed precision pressure
controller/calibrator is the most advanced instrument of
its type. It incorporates many new features and
enhances all the core functions of GE’s previous
best- selling pressure controllers.

DPI 515

Druck Precision Pressure
Controller/Calibrator

DPI 515 is a Druck product.
Druck has joined other
GE high-technology sensing
businesses under a new
name—GE Sensing.

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Innovation

The latest measuring and control technology is
incorporated into one compact, functional instrument.
Multiple processors, advanced software and a large area
display are among a host of features that make the
DPI 515 the most flexible controll the market, along with
simplified operation and reduced maintenance.

This is the first controller of its type to offer automatic
control valve compensation, giving dependable
operation over long, sustained periods of use with a
variety of system pressures and volumes. Special
attention has been given to ensure suitability for bench
use, with recessed retractable feet to provide a
comfortable viewing angle, or for 19 in (483 mm) rack
installation using the optional rack mounting kit.

Measuring

GE’s ability to design and manufacture both sensor and
instrument has resulted in a powerful combination of
silicon sensor and digital compensation. Precision of

0.01% FS enables high accuracy calibration over a wide
range. Long term stability and temperature effects have
been significantly improved and re-calibration simplified.
High resolution (typically 1 ppm) measurement is
achieved with high performance, self-calibrating
electronics and a full seven-digit display.

Control

The DPI 515 patented (patent numbers: EP0710905A1,
US315540-101 and UK2295249) digital control sets a
new standard for control performance with fast
response, no overshoot and unsurpassed setpoint
stability, better than 0.001% of span.

At setpoint the controller continues to operate with low
noise, wide bandwidth and the result is an almost
immeasurable pressure ripple and stable pressure
control unique to this method.

The fast control loop automatically compensates for
small leaks and thermal changes within the system.
Significant leaks should be avoided for calibration
applications, so the DPI 515 continuously monitors the
pressurized system, indicating leaks on the unique
‘activity Indicator.

Quality

GE is ISO 9001-approved, with all instruments
manufactured to strict quality control procedures and
calibrated against international traceable reference
standards, such as the National Institute of Standards
and Technology (NIST) and NPL, NVLAP and UKAS.
Certification is available upon request.

Simplicity

The DPI 515 is simple to operate, even for those
unfamiliar with pressure calibration or control. The
intuitive menu-style software allows quick selection of
the required function, ensuring that within minutes,
calibrations can be performed with ease and confidence.

High-Speed Calibrations Can be
Performed With Ease and Confidence.

The DPI 515 offers high productivity and improvements
in accuracy and quality, with faster calibrations on
multiple units or in-line processes. It’s the perfect tool for
high speed automation.

Installation

The DPI 515 is designed for 19 in (483 mm) rack systems
using an optional rack mounting kit. For benchtop use,
retractable and recessed feet are fitted as standard,
providing a comfortable viewing angle for the operator.

GE

Sensing

Functions

The following pressure measurement and control
functions can be readily selected from the DPI 515 user
menu:

Dual Range

This option extends both the measuring and control
accuracy of the DPI 515. For this feature the unit is
equipped with a second pressure sensor and a control
manifold is fitted. Uniquely, both ranges are fully
independent, providing control stability based on each
individual FS range. Any two pressure ranges may be
selected. Each range is mechanically independent, with
its own dedicated input and output pressure port
connections, and can be selected either manually or
automatically.

Barometric Reference

A high-precision barometric sensor option can be
installed, which enables gauge pressure ranges to be
converted into absolute pressure values. Precision is
determined by the addition of the barometric reference
precision to that of the pressure range being used.

This option increases the versatility of the pressure
controller, allowing it to perform both gauge and
absolute pressure control/calibration with the same
instrument.

Selecting gauge pressure ranges and using the
barometric reference for absolute pressures ensures
easy zeroing by eliminating the need to apply a vacuum
reference.

Pressure Switch Testing

This function permits automatic and accurate calibration
of pressure switches for opening and closing pressure
values, displaying all associated data, including
hysteresis.

Leak Testing

This function automatically measures leak rates in the
desired units/minute. Once the control system achieves
the required pressure, the controller is isolated, leaving
the measurement software to record any system leaks
over the specified time period.

Test Program

For those who perform regular calibration routines or
process procedures, a facility is included to write and
save up to sixteen test programs. This saves time and
reduces procedural errors.

Span Divider

For quick calibration, each soft key is defined as equal
divisions of a specified pressure span; alternatively, the
soft keys can be set quickly to 10% points.

Preset

For quick calibration, each soft key can be defined as an
individual pressure setpoint value.

Control Rate

The response of the pressure controller is adjustable for
fast, no overshoot and variable. This allows user
selection according to the speed and sensitivity of the
application, for example, “no overshoot” for a valid
hysteresis calibration of dial gauges.

Pressure Units

Twenty-four pressure units are supplied as standard, the
six most popular of these may be set up for quick
selection by the soft function keys.

Aeronautical Units

Full control is available in aeronautical units, altitude in
feet/meters, airspeed in knots, km/hr, Mach and rate of
climb in ft/min and m/min.

Multi-language

The instrument display can be selected to read in
English, French, German, Italian, Portuguese or Spanish,
according to the user preference.

Jog

The setpoint can be moved in small incremental steps
using the rotary control, for example, to determine exact
cardinal points on dial gauges.

GE

Sensing