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Table of Contents
Related Manuals for LSI ECT Series
Summary of Contents for LSI ECT Series
- Page 1 Larson Systems Inc. ECT / CDHT / FDHT / DHT User Manual...
- Page 3 COPYRIGHT © 2003 Larson Systems, Inc. (LSI) All rights reserved. No part of this manual may be reproduced by any means without written permis- sion of the author except portions necessary for internal use only by the purchaser of the LSI system.
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Page 4: Table Of Contents
Table of Contents Page 1.0 About Your Tester ............................ 1 1.1 Description - What it can do ......................1 1.1.1 Individual Tester Features and Options ..................2 1.2 Safety and Use Considerations ......................3 1.3 Specifications (All models) ........................ 4 1.3.1 ECT Specifications ........................ -
Page 5: About Your Tester
- 100% factory set overload protection for the load cell. - Two inch diameter load platforms with a 5/16-18 threaded center for using optional tension hooks or for mounting special fixtures. - LSI supplied 6V battery charger. - Peak capture capability. -
Page 6: Individual Tester Features And Options
1.1.1 Individual Tester Features and Options Options: Features: - High Resolution Force 0-100% of FS. - Force Capacities of 110 and 750 - High Resolution Length (.001") - Single micro-adjust length stop screw to - 5" stroke (travel) and 5" range simplify and speed up repetitive measurement (between the measurements. -
Page 7: Safety And Use Considerations
1.2 Safety and Use Considerations Remember that a compressed or extended spring has stored potential energy proportional to the spring constant. Use care and release this energy in a controlled manner to avoid possible injury. Before using your tester, read this manual to gain an understanding of its proper operation to measure force / length relationships of an object and observe the following important operating considerations. -
Page 8: Specifications (All Models)
1.3 Specifications (All models) Actuation Manual handle Dimensions 8 X 12 X 22" Weight Approx. 22 lb Operating temperature range 60-100° F Power requirement 100-135VAC 60 hz (Optional 210-250 VAC 50 hz) Deflection 0.001 max Parallelism 0.001 TIR (Total Indicator Reading) 1.3.1 ECT Compression capability only ) ±... -
Page 9: Fdht Specifications
1.3.3 FDHT Compression / extension capability — Maximum Range: 18" Extended Stroke: 7" Length: 18" 2" ± 1.3.4 DHT Compression / extension capability — ) ± ) ± & Maximum Range: 12" Extended Stroke: 6" Length: 12" 2" ±... -
Page 10: Setting Up Your Tester
Lay the shipping box on its side and pull out the two styrofoam pieces that encase the tester. Check to make sure that you have the following items as shown in Figure 1. * SAVE PACKAGING TO RETURN TESTER TO LSI FOR CALIBRATION * 2 Calibration Report... -
Page 11: Installation
2.2 Installation Observe the considerations outlined in Section 1-2 when selecting a work station for operating the tester. - Place the tester on a level and stable work area where the operator can perform compression and tensile testing in a comfortable manner;... -
Page 12: How To Operate Your Tester
3.0 How to Operate Your Tester 3.1 Features 3.1.1 Power On Press On/Clear The tester will respond by lighting and first displaying: Next it will display: The first line is the model designation, force capacity, /H is high resolution force and software revision, the second line is the length resolution. -
Page 13: Force And Length Zeroing (Intitialization)
3.1.4 Force and Length Zeroing (Initialization) The force and length displays must be zeroed at a reference point. The normal reference for force is with the platforms apart with nothing on the platforms or with the specimen spring on the lower platform. The normal reference for length is with the platforms together or the hooks interlocked. -
Page 14: Test Modes
3.1.5 Test Modes Normal Tracking Mode In the normal tracking mode the tester displays the current length and force. Peak Force Mode In the peak mode the tester remembers and displays the largest force that has occurred since entering the peak mode. The tester samples the force 4000 times each second, so forces of very short duration can be measured accurately. -
Page 15: Optional Automatic Force Resolution Selection
3.2 Optional High Resolution Force The tester automatically displays 10X normal resolution improving resolution and accuracy at all force levels. 3.3 Length Lock The length lock shown in Figure 8 locks the upper platform under load at any selected position in the length range. Using this feature simplifies setting the length stops and promotes accurate repetitive testing at two different lengths. -
Page 16: Setting Micro-Adjust Length Stops
3.4 Setting Micro-Adjust Length Stops Repetitive testing at one or two specified lengthsis made simple through use of the Micro-Adjust system which consists of two threaded stop rods, a dual clamping top support and a sliding stop block. Features: -Loosening the clamping knob a fraction of a turn permits hand rotation of the threaded stop rod for fine positioning -Loosening the clamping knob several turns frees the rod for large platform adjustment;... -
Page 17: Extension Stop
Extension Stop - Place your spring on the extension hooks - Determine the specified length for measurement. - Loosen the right clamping knob and remove the right stop rod. - Loosen the left clamping knob and remove and reinsert the extension rod in the reverse direction - through the sliding stop block, head down (figure 11) - Set the left stop rod to the extension test length and tighten the left stop rod clamp. -
Page 18: Tester Calibration
NIST traceable certified load cell. Length Calibration Calibration requires NIST traceable gage blocks, in increments to test at ten equally spaced lengths and indicator, LSI PN 025-0000-202. 4.1 Force Calibration 4.1.1 Offset Adjustment Pressing the Zero Force button will zero and tare load or drift up to maximum force of the tester. -
Page 19: Platform Parallelism
10. Evaluate results, error at each load increment must be less than the accuracy listed in section 1.3 and the largest positive error should match the largest negative error. Repeat steps 6 to 9 until results are acceptable. Return to Larson Systems for service if it is not possible to achieve the accuracy limits listed in section 1.3. 11. -
Page 20: Deflection Compensation
4.3 Deflection Compensation 4.3.1 Verifying Deflection Compensation 1. Starting with the tester off, press on/clear to turn on the Tester. Compression deflection 2. Bring the platforms together, apply a load of 20 to 30% of the tester full scale and press zero length. 3. -
Page 21: Warranty Information
10073 Baltimore St. NE Minneapolis, MN 55449-4425 Any shipment sent freight collect will be rejected. 3. Warranty determination will be made at the factory. Warranty service will be processed promptly. 4. The tester will be returned freight collect per LSI’s current shipping procedures. - Page 24 Larson Systems Inc. 763-780-2131 10073 Baltimore St. NE 1-877-780-2131 Minneapolis, MN 55449-4425 Fax: 763-780-2182 www.larsonsystems.com info@larsonsystems.com...
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