Cooper-instruments-systems DFI 7000 Digital Force Indicator Instrukcja Użytkownika Pobierz pdf

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 350Ω (10v Exc.)

1 2 3 4 5 6 7 8 9 10

Podsumowanie treści

Strona 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

Strona 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

Strona 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

Strona 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

Strona 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.

Strona 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

Strona 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

Strona 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

Strona 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

Strona 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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