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Summary of Contents for Advance Instrument AE Series
- Page 1 AE Series Strain Indicator Calibrator Model AE-120 / AE-350 User’s Manual Advance Instrument Inc. service@advanceinstrument.com Phone:+886-2-8695 1100 • Fax:+886-2-2693 1460...
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Page 2: Table Of Contents
INSTRUCTION MANUAL AE Series Strain Indicator Calibrator Model AE-120 / AE-350 SECTION 1: DESCRIPTION ................. 2 GENERAL ......................2 SPECIFICATIONS ....................3 FUNCTIONAL DESCRIPTION ................4 SECTION 2: INDICATOR CALIBRATION ............5 CONNECTIONS....................5 CALIBRATOR SET-UP ..................6 INDICATOR SET-UP ................... 6 DATA REDUCTION ..................... -
Page 3: Section 1: Description
MODEL AE STRAIN INDICATOR CALIBRATOR SECTION 1: DESCRIPTION GENERAL The AE Strain Indicator Calibrator is a passive instrument designed to simulate strain gage circuits for the purpose of statically calibrating the indicator or conditioner to which they would be connected. True Wheatstone bridges circuits: quarter-, half- and full bridge of both 120Ω... -
Page 4: Specifications
SPECIFICATIONS Accuracy 0.3% of setting ± 3με ( 0.0015 mV/V ), max. Repeatability ± 3με ( 0.0015 mV/V ), max. Stability ( 0.3% of setting ± 3με ) /℃, max. Thermal emf 1.0μv per volt of excitation, max. Bridge Resistances AE-120 for 120Ω... -
Page 5: Functional Description
FUNCTIONAL DESCRIPTION BINDING Posts The active bridge is between P+ and S-, while a fixed resistor is in between P- and S-. A fixed resistor is also in between each P post and each S+ post respectively, these forms a half bridge if the shorting link at S+ is closed. -
Page 6: Section 2: Indicator Calibration
SECTION 2: INDICATOR CALIBRATION 2-1 While the following instructions explain proper use of this instrument in detail, a brief instructions found on the instrument rear lid will normally be adequate for subsequent use. CONNECTIONS 2-2 Check proper calibrator requirement: AE-120 for 120Ω resistance, while AE-350 for 350Ω. -
Page 7: Calibrator Set-Up
b. Unstable zero due to changes in lead resistance with ambient temperature. c. Span errors when the indicator is "calibrated" by shunt-calibration of arms external to the indicator. All the above effects are proportional to the ratio of the lead resistance to the gage ( or bridge arm ) resistance. -
Page 8: Data Reduction
DATA REDUCTION 2-9 Strain Indicator: a. If set for GF = 2.000 and, no data reduction is necessary: the indicator reading and calibrator can be directly compared. Some non-linearity in the indicator would be expected at the higher readings. b. If set for any gage factor other than 2.000, the following relationship applies: Ideal indicator reading = calibrator setting multiplied by 2.0 / GF where GF = The gage factor of the strain gage connected to the users indicator. - Page 9 Table 1. Bridge Non-Linearity with Error Range One Active Arm One Active Arm MICROSTRAIN Bridge Output Simulate Strain Simulate Strain Rotary Switch Standard Include Error Range Non-Linearity position με ( μm/m ) με ( μm/m ) με ( μm/m ) 0.3% Setting ±...
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Page 10: Ae As Precision Attenuator
AE AS PRECISION ATTENUATOR 2-11The AE Strain Indicator Calibrator is simply a passive network in a real Wheatstone bridge configuration with an output/input ratio from 0 to 0.05 in 100, linear steps. It therefore has application where large but precise attenuations are required. For example it can be used to check the linearity of low-input instruments. -
Page 11: Section 3: Servicing
SECTION 3: SERVICING 3.1 The AE Strain Indicator Calibrator is a completely passive device consisting of only switches and precision resistors. Routine or preventive maintenance is not required. In view of the intended purpose of this instrument as a "standard," it should be accorded more than the normal care in handling.
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