Cooper Instruments DFI-9000 Installation Manual
DFI 9000
PORTABLE DIGITAL INDICATOR
USER’S GUIDE
www.cooperinstruments.com
PH: 540-349-4746 • FAX: 540-347-4755
CONTENTS
1.0 INTRODUCTION ....................................................................................................................1
2.0 SETUP AND USE...................................................................................................................1
2.1 Your DFI 9000 ..................................................................................................................................1
2.2 Additional Tools..............................................................................................................................1
2.3 Setup Overview ............................................................................................................................... 1
2.4 Connect the Transducer................................................................................................................. 2
2.4.1 Cable Type ................................................................................................................................ 2
2.4.2 Connection................................................................................................................................2
2.5 Turn On the Unit.............................................................................................................................. 2
2.6 Set the Decimal Point Location .....................................................................................................3
2.7 Verify Calibration ............................................................................................................................3
2.8 Fine Tune ......................................................................................................................................... 4
2.9 Using the DFI 9000..........................................................................................................................4
3.0 CALIBRATION .......................................................................................................................4
3.1 When to Calibrate ...........................................................................................................................4
3.2 Methods of Calibration ...................................................................................................................4
3.3 Calibration Overview ......................................................................................................................4
3.4 Center the Fine Tuning...................................................................................................................4
3.5 Disable Scaling ...............................................................................................................................4
3.6 Adjust for No Load.......................................................................................................................... 5
3.7 Adjust for a Known Load................................................................................................................5
3.7.1 Standard Calibration................................................................................................................5
3.7.2 Shunt Calibration .....................................................................................................................5
4.0 OPTIONS ...............................................................................................................................6
4.1 Peak Detector .................................................................................................................................. 7
4.2 Analog Voltage Output ...................................................................................................................7
4.3 High Input ........................................................................................................................................7
5.0 MAINTENANCE AND REPAIR ..............................................................................................7
5.1 General Care.................................................................................................................................... 7
5.1.1 Cleaning .................................................................................................................................... 7
5.1.2 Storing....................................................................................................................................... 7
5.2 Troubleshooting.............................................................................................................................. 7
5.2.1 Low Battery............................................................................................................................... 7
5.2.2 Overrange indications .............................................................................................................7
5.2.3 Erratic Readings....................................................................................................................... 8
6.0 SPECIFICATIONS..................................................................................................................8
6.1 Physical Characteristics ................................................................................................................8
6.2 Environmental ................................................................................................................................. 8
6.3 Power Supply ..................................................................................................................................8
6.4 Transducer Interface ......................................................................................................................8
6.5 Amplifier ..........................................................................................................................................8
6.6 Digital Display .................................................................................................................................9
6.7 Options ............................................................................................................................................9
7.0 WARRANTY REPAIR POLICY ..............................................................................................9
CF12 DFI 9000 ii Rev. C May 2004
1.0 INTRODUCTION
The DFI 9000 Portable Indicator is a battery-powered signal conditioner and readout device. The DFI provides
precise electrical drive to a transducer and converts the transducer output into a digital of engineering units.
The signal conditioner supports transducer outputs between 1 and 4 millivolts/volt (mV/V); a high input option
supports outputs up to 40 mV/V. The readout device is a 4-1/2 digit, liquid-crystal display.
Enclosed in a rugged, weatherproof aluminum case, the DFI 9000 is specially designed for remote field operations.
Quick field setup allows the DFI 9000 to be used for a variety of applications, from checking the load on an oil well
drilling bit to determining natural gas line pressure.
Coarse zero and Course span controls allow broad adjustment for a wide variety of transducer outputs. To prevent
accidental misadjustment, these controls are located on the edge of the circuit board inside the unit, easily
accessible when the panel is removed from the case. Fine zero and fine span controls on the front panel allow
precise adjustment for offsets and gain variations up to +/-15 percent of full scale.
An optional peak detector toggles between peak mode and track mode via a front-panel switch. In both modes, the
unit monitors the input signal. In peak mode, the DFI 9000 stores, digitizes, and displays the highest signal level.
2.0 SETUP AND USE
2.1 Your DFI 9000
The DFI 9000 can be purchased in one of two ways:
• As a stand-alone unit with a mating connector for the input connector
• As a set with a transducer and a mating connector for the input connector
Some transducers are equipped with internal cables that are used to connect the transducer to the DFI 9000.
Cooper offers separate cables for transducers without integral cables.
If you purchased Assembly /Calibration with the DFI 9000 and a Cooper transducer, as a system, they are
calibrated together as a system. If Assembly/Calibration was not purchased, follow the setup procedures in this
section before using the unit.
If you purchased the DFI 9000 as a stand-alone unit or if you replace the original transducer, follow the setup and
calibration procedures before using the unit for the first time.
2.2 Additional Tools
Use the following tools to set up and calibrate your DFI 9000:
• Two inches of #20 AWG wire (if needed)
• Needle-nose pliers
• Small, standard screwdriver
• Calculator
• Solder and soldering iron (if needed)
2.3 Setup Overview
1. Connect the transducer to the unit
2. Turn on the unit
3. Set the decimal point location
4. Verify the calibration
5. Fine tune
CF12 DFI 9000 1 Rev. C May 2004
2.4 Connect the Transducer
2.4.1 Cable Type
Determine the distance between the transducer’s installed location and the DFI 9000. If the distance is less than
30 feet, use a four-wire hookup. If it is greater than 30 feet, use a six-wire hookup and the ”sense” feature.
Transducers with integral cables generally have four wires, designated:
+ Excitation
- Excitation
+ Signal (or + Output)
- Signal (or – Output)
For long six-wire cables, the additional two wires are used for ”sense” feature and are designated:
+ Sense
- Sense
The “sense” feature reduces the effect of signal voltage loss over a long cable, increasing display accuracy. The
“sense” feature is only needed for cables longer than 30 feet.
2.4.2 Connection
Use the transducer’s integral cable if available. If the transducer is not equipped with an integral cable, wire your
own cable as follows:
• Four –wire hookup (Figure 1)-Disable the “sense” feature by soldering two small wires inside the mating
connector to jumper:
+ Excitation (pin A) to + Sense (pin B)
- Excitation (pin C) to – Sense (pin D)
DFI 9000 MATING
CONNECTOR
Six-wire hookup (Figure 2)- Jumpers are not needed in this configuration.
DFI 9000 MATING
CONNECTOR
2.5 Turn On the Unit
Flip the on/off toggle switch on the front panel to on and allow the DFI 9000 to stabilize for a few seconds.
1. Make sure that no load is applied to the transducer, then press and hold the shunt cal button.
2. If the number on the display drifts, the unit is not yet stable.
3. Release the shunt cal button and try again in a few seconds.
CF12 DFI 9000 2 Rev. C May 2004
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