Cooper-instruments-systems DFI 7000 Digital Force Indicator Bedienungsanleitung

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CF11 1 V-May 2003-008-0186-00
DFI 7000 DIGITAL FORCE INDICATOR USER’S GUIDE
1.0 INTRODUCTION
The DFI 7000 Signal Conditioner-Indicator is a complete 4-1/2-digit signal conditioner and indicator housed in a 1/8
DIN case. This unit provides many of the features found on expensive, larger signal conditioning units.
Full 20,000 count resolution
Accepts strain-gage transducer inputs from 0.5 to 50 mv/v
0-5V output
+/-0.03% accuracy
Screw-type power and I/O connectors
Shunt calibration from front-panel
1/8 DIN “panel meter size” case
5- or 10-volt transducer excitation
Optional Dual Limits
Optional Peak Detector
Optional Track-and-Hold
110- or 220-V Power
2.0 DESCRIPTION
2.1 Configuration
Within the DFI 7000’s enclosure there are three printed circuit boards (four if an option is selected). The Main
Board contains the circuitry for the power supply and A/D converter. The Display Board contains all circuitry
needed to drive the LED display and the units display bar. The Signal Conditioner Board contains circuitry for the
signal amplifier and for the excitation power supply.
The Display Board solders to the main Board, whereas the Signal Conditioner plugs into it. If the Dual Limits, Peak
Detector or Track-and-Hold option is supplied, a fourth plug-in board houses it. DUE TO SPACE CONSTRAINTS,
ONLY ONE OPTION CAN BE INSTALLED ON A PARTICULAR UNIT. Adjustments for COARSE SPAN, COARSE
ZERO, FINE ZERO, and SCALING are provided. FINE ZERO and FINE SPAN may be adjusted from the front
panel without removing the front bezel. The entire unit may be quickly panel- or rack-mounted with the snap-on
attachments supplied with every unit.
2.2 Specifications
GENERAL
# Channels 1
Case Material Noryl Plastic
Temperature Storage
-20° F to 200° F
Temperature Operating
32° F to 130° F
TRANSDUCER INTERFACE
Transducer Excitation 5 or 10 VDC
Type of inputs accepted 0.5 mv/v to 5.0 mv/v or 5 mv/v to 50 mv/v
Transducer Current drive (ma.) 50
Input Gain Range 10-1000
Push Button Shunt Cal Yes
Calibration Method Manual (front panel)
Zero Balance +/- 15% F.S. Min.
Noise & Ripple <100 microvolts
Transducer Minimum Impedance 350 (10v Exc.)
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Inhaltsverzeichnis

Seite 1 - 2.2 Specifications

CF11 1 V-May 2003-008-0186-00 DFI 7000 DIGITAL FORCE INDICATOR USER’S GUIDE 1.0 INTRODUCTION The DFI 7000 Signal Conditioner-Indicator is a com

Seite 2

CF11 10 V-May 2003-008-0186-00 9.0 WARRANTY REPAIR POLICY Limited Warranty on Products Any Cooper Instruments product which, under normal operati

Seite 3 - LIMIT TWO (L2)

CF11 2 V-May 2003-008-0186-00 AMPLIFIER CHARACTERISTICS Full-Scale Output 5 Volts Output Impedance <2 ohms Accuracy +/-0.03% Frequency Respon

Seite 4 - 4.0 INTIAL ADJUSTMENTS/SETUP

CF11 3 V-May 2003-008-0186-00 3.2 Mounting the Unit For panel mounting, cut a rectangular hole 3.58” in width by 1.73” in height. Remove the panel

Seite 5 - 4.2 Span Adjustment

CF11 4 V-May 2003-008-0186-00 button on the front panel, or by interconnecting the RESET and COMMON terminals momentarily on the rear connector.

Seite 6 - 5.0 OPERATIVE ADJUSTMENTS

CF11 5 V-May 2003-008-0186-00 14.7 psi) and adjustment cannot be made using the ZERO adjustment only. 1. Remove the bezel and front panel with a

Seite 7 - 7.0 OPTIONS

CF11 6 V-May 2003-008-0186-00 4.3 Scaling Adjustment Scaling adjustment permits the DFI 7000 to display values in the engineering units desired by

Seite 8 - 7.3 Track-And-Hold Option

CF11 7 V-May 2003-008-0186-00 3. Carefully pull the Main Board out of the unit. All boards will come out simultaneously. 4. Gently remove the Si

Seite 9 - 8.0 TROUBLESHOOTING GUIDE

CF11 8 V-May 2003-008-0186-00 7.1.1 Setting The Limits Adjustments Proceed to adjust as follows: 1. Unplug the AC power and remove the bezel and f

Seite 10 - 9.0 WARRANTY REPAIR POLICY

CF11 9 V-May 2003-008-0186-00 track the input signal unless the HOLD mode is active. The AMP OUT terminal will always track the input signal regar

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