Druck DPI-841 Data sheet

GE Infrastructure

Sensing

DPI 841/842

Druck Frequency Calibrat or/
Loop Calibrat or

DPI 841/842 is a GEDruck product .
GEDruck has joined other GE
high-technology sensing
businesses under a new name

_

GE Infrastructure Sensing.

Features

• Advanced frequency meter and generator with three
output waveforms from 0.1 V to 24 V amplitude

• Measure or source 0.01 Hz to 50 kHz

• CPM, CPH and totalizing counter

• Sine, square and triangular waveforms

• mA measure, switch test and 24V loop power

• Large backlit display, menu driven interface

• HART®loop resistor

• Robust and weatherproof

• Compact, simple t o use, easy to carry

• Convenient, one-handed operation

• Secure grip, impact resistant, elastomer
protected

• Electronic test and maintenance

• Transmitter calibration and switch test

• Loop set-up and diagnostics
The DPI 800 Series is a complete range of advanced, robust

and simple to use hand-held instruments. Highly cost effec­tive, these tools are ideal for test/calibration of many popu­lar process parameters. Advanced features and technical
innovations address more applications in less time and deliv­er results you can rely on.

Applications

• Plug/play connector for Intelligent Digital Output
Sensors™ (IDOS) Universal Measurement Modules

g

GE Infrastructure

Sensing

Type P P RTD °F (°C) TC mA/V Hz

Indicator (measure pressure) !!
Calibrator (measure or source) !! ! ! ! ! !
Thermometer (dual input T1, T2, T1 - T2) !

Dual Capability

mA measure with 24 V loop power !! !! !
Switch test !! !! !
HART resistor !! !! !
IDOS Universal Measurement Modules !!!! ! !! ! !!

Features

Programmable step and ramp output !! !! ! ! !
Hold, scaling, max/min/avg, filter, alarm, !!!! ! !! ! !!

tare
25 pressure units, flow scaling, leak test !!"" " "" " ""
1000 point data memory, RS232 #### ! ## # ##

Applications

Measurement and monitoring !!!! ! !! ! !!
Indicator, controller and recorder testing !!!! !! ! !!
Transmitter maintenance and calibration !! !! !
Process loop set-up and maintenance !! !! !
Switch, trip and safety system testing !! !! !

!Optional (please refer to IDOS datasheet), "When f itt ed with IDOS pressure module
#Optional (please refer to accessories IO800E).

DPI 800

DPI 832

DPI 841

DPI 842

DPI 802

DPI 811

DPI 812

DPI 820

DPI 821

DPI 822

DPI 841/842
Specifications

Measures or sources Hz, kHz, CPM, CPH and pulses. It is
the ideal instrument for process technicians and elec­tronic engineers, providing a highly accurate calibration
standard and versatile test tool. Dedicated features facil­itate test and maintenance of electronic circuits and fre­quency instruments including frequency meters, batch
counters, tachometers, motion pickups, integrators and
flowmeters.

DPI 841 Frequency Loop Calibrator

Automatic Trigger

Detects the best value regardless of waveform or
amplitude

Frequency Scaling

Reads in process units; e.g. flow or revolutions/minute

Programmable Step and Ramp Outputs

Simplify calibration and diagnostics

Adjustable “Nudge” Value

Provides an incremental output for setting switches,
relays, trips and alarms

Advanced Features

Hold, maximum/minimum/average (with time stamp),
scaling, tare (offset) and damping f ilt er facilitat e syst em
checks and troubleshooting

Dual Readings

Provides simultaneous frequency output and mA meas­urement for transmitter and loop maintenance

24 V Power Supply

Energize transmitters and control loops

Automatic Switch Test

Captures open/closed trip values providing a fast and
highly accurate “safety system” check

HART Resistor

Can be switched into the loop when required for a HART
digital communicator and avoids the inconvenience of
carrying a 250 S resistor

DPI 842 Frequency Loop Calibrator

GE Infrastructure

Sensing

DPI 841/842
Specifications

DPI 841 and DPI 842
Measure Accuracy*

0 to 999.999 Hz 0.003% of reading + 2 counts
0 to 50.0000 kHz 0.003% of reading + 2 counts
0 to 999999 cpm/cph 0.003% of reading + 2 counts
0 to 999999 total count

Source Accuracy*

0 to 999.99 Hz 0.003% of reading + 0.0023 Hz
0 to 50.000 kHz 0.003% of reading + 0.0336 KHz
0 to 99999 cpm 0.003% of reading + 0.138 cpm
0 to 99999 cph 0.003% of reading + 0.5 cph
0 to 999999 pulse with

variable rate 0 to 99999 Hz
Temperature Coefficient 14°F to 50°F, 86°F to 122°F; 0.0011% FS/°F

(-10°C to 10°C, 30°C to 50°C; 0.002% FS/°C)

Waveform sine, square and triangular

(unipolar or bipolar)
Voltage Input 30 V maximum
Trigger Level 0 to 24 V, resolution 0.1 V
Output Amplitude 0 to 24 VDC ±1% (20 mA maximum)

0 to 24 VAC ±5% (20 mA maximum)

Operating Temperature

14°F to 122°F (-10°C to 50°C)

Storage Temperature

-4°F to 158°F (-20°C to 70°C)

Humidity

0% to 90% non-condensing, Def Stan 66-31 8.6 Cat III

Shock and Vibration

BS EN61010:2001, Def Stan 66-31, 8.4 Cat III

EMC

BS EN61326-1:1998 + A2:2001

Safety

Electrical BS EN61010:2001. CE marked

Display

Graphic LCD with backlight . Resolution 99999

Size (l x w x h) and Weight

7.1 in x 3.3 in x 2 in (180 mm x 85 mm x 50 mm),
14 oz (400 g)

Batteries

3 AAalkaline, >60 hours frequency measure, 10 hours
mA source (24 V @ 12 mA)

Electrical Connectors

Four (4 mm) sockets

DPI 800 Series Common Specif ication

DPI 842/Additional Specification

Measure Accuracy*

0 to 55.000 mA 0.02% of reading + 3 counts
Temperature Coefficient 14°F to 50°F, 86°F to 122°F; 0.0011% FS/°F

-10°C to 10°C, 30°C to 50°C; 0.002% FS/°C
Switch Detection Open and closed, 2 mA current
Loop Power Output 24 V ±10% (35 mA maximum)
HART mA Loop Resistor 250 S (menu selection)

* Accuracy includes operation over 50°F to 86°F (10°C to 30°C), one year stability and calibration

uncertainty.

Intelligent Digital Output Sensor (IDOS)

Universal Pressure Modules are available from
10 inH2O to 10,000 psi (25 mbar to 700 bar)

Total Flexibility

Means IDOS modules can be used with any compatible
instrument; for example, a DPI 842 frequency loop cali­brator can become a fully featured pressure calibrator

Plug and Play

Modules are interchangeable between instruments,
requiring no set-up or instrument calibration.

Please refer to IDOS UPM data sheet.

IDOS Flexibility

GE Infrastructure

Sensing

g

DPI 841/842
Specifications

©2005 GEInfrastructure Sensing, Inc. All rights reserved.
920-129A

All specifications are subject to change for product improvement without notice.
Intelligent Digital Output Sensors™ is a trademark of GE Infrastructure Sensing, Inc.
GE®is a registered trademark of General Electric Co. Other company or product
names mentioned in this document may be trademarks or registered trademarks of
their respective companies, which are not affiliated with GE.

Ordering Information

Please state the model number DPI 841 or 842 and
accessories as separate items.

Each unit is supplied with batteries, test leads, calibration
certificate and user guide.

IO800A

Soft fabric carrying case with accessory pocket

IO800B

Belt clip, wrist strap/hanging loop and bench stand

IO800C

NiMh batteries with charger (charged externally)

IO800E

Data logging upgrade and RS232 lead

Log Data periodically (1 second to 23 hours 59 minutes 59
seconds) or manually by key press. Review data on-
screen or upload to a PC via the RS232 interface. No soft­ware purchase is necessary as standard Microsoft®appli­cations provide data transfer (HyperTerminal) and analysis

Related Products

GEis a world leader in the design and manufacture of
pressure, temperature and electrical f ield cal ibrators,
laboratory/workshop calibration equipment and pres­sure sensors.

Accessories

(Excel). Alternatively, print directly to a compatible serial
printer. Real time clock with dat e format. Memory: 1000
single or 750 dual reading screens with date and time.
Header tag: 6 user characters to identify groups of read­ings. RS232: 19.2 k baud, 8 data bits, 1 stop bit, no parity,
Xon/Xoff. Data output: comma separated ASCII.

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