Interface Gold Standard Calibration System

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Interface Gold Standard Calibration System
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INTERFACE

• Developed in 1989, Interface, Inc. began to
  market the Gold Standard System in 1991. It is
  now used in more than 250 labs throughout the
  world.

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Gold StandardTM Load Cell Calibration System
INTERFACE

• One 9840 2 Channel Indicator for Load Cell
  Exitation/ Signal Conditioning
• One ICS-202 Force Calibration Software
• One SIS-103 One-Day Training at Interface
• One CT-139-10 SCB1 to GS Load Cell Cable
• One CT-142-10 SCB1 to Standard Load Cell Cable
• One CX-0440 mV/V Transfer Standard
• One SIS-104 System Setup

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Interface Gold StandardTM Calibration Systems
INTERFACE

• Controlled calibration process reduces
  calibration times by 50 to 90 and produces
  consistent calibration results
• Easy-to-use software reduces operator training
  time
• Fully integrated reporting functions
• Automatic archiving of calibration results
• Supports ASTM E74, ASTM E4 and ISO 7500/1,
  EH10002
• Industry Accepted terms and calculations
• 0.1µV display resolution
• Used in over 250 calibration labs world-wide

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Gold StandardTM Calibration System Options
INTERFACE

• GS-USB Provides USB interface for HRBSC, SCB1,
  DA-101 and HL4IO instrument boards includes
  internal power supply, cooling fan and USB cable.
• SCB1 20 bit instrument board provides signal
  conditioning for the Gold StandardTM System.
  Available in single or dual channel versions.
• HRBSC High-resolution 22 bit instrument board
  increases accuracy over the SCB1. 
• DA-101 Digital to analog board for generating
  command signal for system control. Provides
  setpoint signal for servo controlled hydraulic
  force testing.
• HL4IO High level 4-channel input board allows
  calibration of 5 and 10 VDC output transducers
  and includes all features of the DA-101.
• Load Cell Simulator mV/V transfer standards are
  used to calibrate the Gold StandardTM system, and
  for setting up and testing load cell readout
  devices. CX-0404 - specifically designed for
  instrument substitution testing as per ASTM E74.
• Desktop, laptop or portable PC Contact factory
  for currently available configurations.
• Gold StandardTM or Platinum StandardTM load cells
  as required.

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1600 Gold StandardTM Calibration Load Cell
INTERFACE

• Tension and compression in one unit
• .005 nonrepeatability
• .01 creep
• High output - to 4mV/V
• High precision base installed
• 3 run NIST traceable calibration
• Factory installed calibration adapter
• Eccentric load compensated
• .0008/F temp. effect on output
• 4 lower load limit per ASTM E74

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1600 Gold StandardTM Calibration Compression Only
Load Cell
INTERFACE

• .005 nonrepeatability
• .01 creep
• High output - to 4mV/V
• High precision base installed
• 3 run NIST traceable calibration
• Eccentric load compensated
• .0008/F temp. effect on output
• 4 lower load limit

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Model 1800 Platinum SeriesLow Profile Load Cells
INTERFACE

• .005 non-repeatability
• .01 Creep
• Designed to be used at 2 lower load limit
• .008 /F temp effect on output
• Eccentric load compensated

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Model 9840 Intelligent Indicator
INTERFACE

• 24 bit internal resolution
• /-999,999 Count Bipolar Display
• Nonlinearity lt ? 0.005
• Stores calibration for up to 25 load cells
• Fast, direct analog output
• ? VDC scalable analog output
• Full duplex RS232C
• Peak/Valley hold
• Front panel and remote tare

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Precision mV/V Load Cell Simulator
INTERFACE

• Most accurate load cell simulator.
• Special low thermal
• emf construction.
• Each unit individually calibrated,
• aged and recalibrated.
• Strong, rugged design.
• Instrument substitution testing.
• MDL CX-0404 is specifically designed for
  instrument substitution testing as per ASTM E74.

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Why use a simulator or mV/V Standard ?

• Calibrate Indicator or Signal Conditioner
  periodically
• Daily sanity check on measurements
• Establish true
• zero
• Check cables

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Model CX Standard

• 6 digit calibration
• 10 ppm uncertainty

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Shunt Calibration

• Technique of unbalancing bridge with external
  shunt resistor
• Less Expensive
• OK for medium-accuracy work
• Affected by preload, temperature, bridge
  resistance drift, cable length

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Transducer Calibration Procedures
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Machine Calibration Procedures
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Measurement Uncertainty Model, Calibrating Load
Cell by Comparison
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Uncertainty Components

• CNS Cal of Standard Transducer by NIST
• DS Drift in Standard since last cal
• PS Creep in Standard Transducer
• TS Temperature effect on output of Standard
• RHF Nonreproducibility of frame, load string
• CH Calibration of HRBSC Instrument
• DH Drift in HRBSC since last cal
• TH Temperature effect on HRBSC Instrument
• LH Nonlinearity of HRBSC Instrument
• NH Noise of HRBSC Instrument

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CH Uncertainty in calibration of HRBSC

•   (rectangular
  distribution)
•  Source of Uncertainty Type
  Uncertainty (RDG)
  
  
  
  
  
  
• CCX Calibration of CX-0610 B
  0.0008
• DCX Drift in transfer function of
• CX-0610 between calibrations B
  0.0010
• TCX Temperature effect on
• CX-0610
  B 0.0054
• NCX Noise of the HRBSC
• instrument during calibration
• with the CX-0610 B
  0.0003
•  
  ------------
• Combined (Root Sum of Squares)
  0.0056

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Uncertainty Budget Example
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Dominant Uncertainty Components

• Nonreproducibility of load frame, threads,
  adaptors, alignment
• Calibration of Standard at low end of range
• Drift in Standard since last cal

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Load Cell Calibration System Software - Opening
Screen
INTERFACE
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INTERFACE
DUT Description
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Setpoint Entry
INTERFACE
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Setpoint File Selection
INTERFACE
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Exercise Load Cells
INTERFACE
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Begin Calibration
INTERFACE
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Calibration
INTERFACE
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Completed Calibration
INTERFACE
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Error Plot
INTERFACE
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Curve Fit
INTERFACE
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Load Cell History
INTERFACE
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INTERFACE
INTERFACE
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Report Designer
INTERFACE
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Custom Report
INTERFACE
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Gold StandardTM E4 Machine Calibration System
INTERFACE

• 9840-100-1 Intelligent Indicator
• One ICS-205 E4 Machine Calibration Software
• One CT-177-10 Gold Standardtm Interconnect Cable
  Assemby
• Serial Cable, Laptop to 9840
• One CX-0440 4mV/V Transfer Standard
• One SIS-104 System Setup
• Training at Interface

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Features of the Portable E4 Machine
Calibration Software
INTERFACE

• Capable of providing the user with printed
  copies of
• E4-02 Test Machine Verification Report.
• ISO 7500/1 Test Machine Verification Report.

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Portable E4 System Software Opening Screen
INTERFACE
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Setpoint Entry
INTERFACE
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Setpoint File Selection
INTERFACE
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Meter Configuration
INTERFACE
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Machine Details
INTERFACE
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Load Point Entry
INTERFACE
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Load Point Entry
INTERFACE
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Begin Verification
INTERFACE
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Data Collection
INTERFACE
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Completed Verification
INTERFACE
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E4 Report
INTERFACE
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Verification History
INTERFACE
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ISO 7500-1 Report
INTERFACE
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ISO 7500-1
INTERFACE
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Report Designer
INTERFACE
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Custom E4 Report
INTERFACE
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Custom ISO Report
INTERFACE