Ele international 200mm demec mechanical strain gauge. With a discrimination of two microstrains on the 200 mm gauge and gauge lengths of 50 to 2000 mm the demec strain gauge is ideal for. Msm31 demec mechanical strain gauge demec strain gauges are supplied in a wooden case and come complete with an invar reference bar, for control measurements, and a. The demec strain gauge is ideal for use on many types of structure for strain measurement and crack monitoring. We use cookies to save your country selection and to power your shopping experience. This set contains all that is needed to set up a crack monitoring system using precision calipers. The demountable mechanical strain gauge demec was developed at the cement and concrete association to enable strain measurements to be made at different parts of a structure using a single instrument. Monitoring the changes in crack width across a crack helps determine the cause of cracking. Crack gauge for concrete crack monitoring humboldt mfg. I am interested in knowing how structural engineers measure crack widths in existing reinforced concrete walls. Measurements are taken on the same cycle as the level readings and transferred to an excel spreadsheet.
Our demec gauge is supplied completely with reference and setting bars. As long back as i can rememeber, we have used the ctl. Demec strain gauge reinforced concrete tell tale crack. See who you know at demec limited, leverage your professional network, and get hired. Tei demec gauge, rs 2 piece, tamilnadu engineering. Nov 24, 2015 msm31 demec mechanical strain gauge demec strain gauges are supplied in a wooden case and come complete with an invar reference bar, for control measurements, and a setting out bar to enable. Used to monitor horizontal or vertical movement across a crack on a flat surface. The demec mechanical strain gauge mayes instruments. Cookie information is stored in your browser and performs functions such as recognising you. Monitoring of shear crack displacements by using demec points. Demountable mechanical strain gauge developed at the bcca british cement and concrete association introduction the demountable mechanical strain gauge demec was developed. Castinplace concrete connections for precast deck systems demec points were used to measure. The demec strain gauge consists of an invar main beam with two conical locating points, one fixed and the other pivoting on a special knife edge. This gauge is ideal for monitoring cracks and strains in a number of structure types.
The creation of demec was made possible by an act of the delaware general. The demec strain gauge has two locating points, one fixed and one moveable measuring at the gauge length. The demec consists of a dial gauge attached to an invar bar. Demec represents the nine municipal electric distribution utilities located in the state of delaware. We can provide a full back up service as standard to every product, you buy from us. The demec strain gauge uses a lever and dialdigital indicating gauge arrangement mounted on an invar main beam, and is easy to use. Crack width gauges, concrete testing equipment, controls. Demec strain gauge structural cracks in concrete detector, find complete details about demec strain gauge structural cracks in concrete detector,cracked concrete detector,structural. Demec strain gauge reinforced concrete tell tale crack width gauge monitors, find complete details about demec strain gauge reinforced concrete tell tale crack width gauge. Existing cracks and designated areas are monitored using demec studs. Demec holdings private limited is a business holding company incorporated in the republic of maldives.
Economy crack comparator is a convenient, easytouse device similar in size to a credit card. Demec mechanical strain gauge and accessories a demountable mechanical strain gauge has advantages of accuracy, reliability and cost over other methods of strain measurement. A wide variety of concrete strain gauge options are available to you, there are 65 suppliers who sells concrete strain gauge on, mainly located in asia. The elcometer 143 crack width ruler is a simple gauge used for the measurement of crack widths in concrete and other structures. Standard gauge lengths are from 100mm to 500mm, while length of up to 2000mm available on request. Linestorm standard tell tale crack monitor for crack.
How can we analysis micro strain value from digital strain gauge. Most buildings crack at some time during their service life. Measurex offers instruments such as electronic pressure tranducers for many depth ranges and digital water pressure check water pressure and gas prssure sensor to check the pressure of. Demec strain gauge archives page 2 of 2 capco castle. Demec strain gauge bs 1881206 the demec range of mechanical strain measurement devices are ideally suited for the measurement of strain in concrete structures, rock strata etc. The letter can be scanned and emailed as a pdf file here. The demec strain gauge is ideal for use on many types of structure for strain. The hm240 strain gauge set models yield precise physical measurements of strain in materials or structural components under load, relative displacements in structures, opening or closing of cracks, shrinkage of concrete block during curing, and similar applications. About 100 people attended the event, including representatives of demec, its member communities and local and state officials, including delaware governor jack markell, dnrec secretary collin omara and smyrna mayor patricia a. Install demec studs either side of a crack and use demec gauge mechanical strain. Demec strain gauges an introduction annotateddemec.
Demec did an awesome job with our navajo nation nm az community outreach by supplying power to those. To measure the strain or crack propagation, the crack gauge is manually held over two stainless steel discs adhered to the structure under test. Install demec studs either side of a crack and use demec gauge mechanical strain gauge to measure the. The crack width gauge is specifically designed to monitor the width changes in cracks. Ideal for restoration, seismic retrofits, or analysis of differential foundation settlement, the crackmon is an.
Demec portable strain gauges from bestech australia. Students must support their registration with a letter from your head of department confirming your status. Under the new government guidelines we are considered an essential business so we will remain open unless this advice changes. The demec mechanical strain gauge demec strain gauges an introduction the demec mechanical strain gauge was developed as a reliable and accurate way of taking strain measurements at different points on a structure using a single instrument. The demec mechanical strain gauge is developed as a reliable and accurate way of taking strain measurements at different points on a structure using a single instrument. The demec consists of a standard or a digital dial gauge attached to an invar bar. Demountable mechanical strain gauge developed at the bcca british cement and concrete association introduction the demountable mechanical strain gauge demec was developed at the cement and concrete association to enable strain measurements to be made at different parts of a structure using a single instrument. Monitoring the changes in crack width across a crack helps determine the cause of cracking and what remedial work should be specified. Demce strain gauge with a discrimination of two microstrains on the 200 mm gauge and gauge lengths of 50 to 2000 mm the demec strain gauge is ideal for use on many types of structure for strain measurement and crack monitoring. Digital version of the demec the digital demec strain gauge incorporates a digital indicator with a resolution of 0. Crack gauge monitoring vanguard construction solutions. Demountable mechanical strain gauge australia bestech australia. Crack gauge monitoring cracks occur in most buildings and structures.
Sep 14, 2011 functioning of the demec portable strain gauges. In addition to the procedures we already have in place, we. The continued goal and mission of demec is to advance the principles of public power community ownership and provide competitive, reliable energy. In this short period we are one of the prestigious name in elevator industry. Avongard are the originators and global suppliers of gauges for the monitoring of cracks in buildings and civil engineering structures.
Usually the cracks are of little consequence but they may be the first indication of a serious defect. Demec strain gauge is ideal for use on many types of structural crack monitoring. Demec gauge we are manufacturer of demec gauge in coimbatore, chennai, tamilnadu. Before your construction project commences, it is highly recommended that you locate all existing cracks in a pre. The demec mechanical strain gauge demec strain gauges an introduction the demec mechanical strain gauge was developed as a reliable and accurate way of taking strain.
Hinged mounting allows crack monitoring in corners with 70 to180angles, sold in pairs. The demec crack gauge comprises of an invar main beam with two conical locating points, one of which is fixed while the other point pivots on a knife edge. It has gauge lengths of 50 to 2000 mm and a discrimination of only two microstrains on the 200mm gauge. Dental assisting training video for dental office staff. A range of professional crack monitoring equipment including the market leader avongard. Improved design provides easier use and more accurate results. Our main activities include construction, property development and consultancy. Temperature correction of demec demountable mechanical strain gauge. The hm240 strain gauge set models yield precise physical measurements of strain in materials or structural components under load, relative displacements in structures, opening or closing.
Linestorm standard tell tale crack monitor for crack monitoring. Humboldt concrete crack gauge, plus 38yz71hc2937 grainger. The buildera crackmon 4020a heavyduty crack monitor is a simple, reliable, and reusable crack gauge tell tale for measuring vertical and horizontal displacement in foundations, concrete, masonry, wood, and steel structures. Avongard supply a range of products for monitoring the movement of cracks and can also provide inhouse courses on crack diagnosis of lowrise buildings. Other essentials available include an adapter, width gauge, stainless steel discs, digital calipers, and complete kits. We are a uk company who have been trading since the 1970s. At sccs we offer a range of tools and equipment to help measure small distances including crack monitoring. The digital demec strain gauge incorporates a digital indicator with a resolution of 0. Crack width monitoring typical applications include. Demce strain gauge with a discrimination of two microstrains on the 200 mm gauge and gauge lengths of 50 to 2000 mm the demec strain gauge is ideal for use on many types of structure. Get best price and read about company and get contact details and address. Castinplace concrete connections for precast deck systems demec points were used to measure the width of crack opening at the joint interface with a demec mechanical strain gage. Looking for humboldt concrete crack gauge, plus 38yz71.
Concrete crack monitors are used to measure vertical horizontal cracking in concrete structures. Cracks occur in most buildings and civil engineering structures. Monitoring the changes in crack width is an important diagnostic technique for determining the cause and specifying the remedial work. Demec strain gauge structural cracks in concrete detector. How can we analysis micro strain value from digital strain. Measuring crack widths in reinforced concrete walls.
However, the desired accuracy can only be obtained via precision manufacture and care in the use of the instrument. Demec mechanical strain gauge industrysearch australia. Opening, closing and differential crack movement can be continuously monitored and recorded. Without these our online store will not function and you wont be able to view the avongard products. Strain gauge pressure transducer digital water pressure. Sincon crack width gauge for crack monitoring for crack. This makes the demec strain gauge ideal for strain measurement and crack monitoring on many different types of structures.
This kit includes a crack width gauge to measure the width of cracks prior to monitoring, a digital caliper with data port, a pack of stainless steel discs, a pack of caliper marks, a pair of corner discs and crack record sheets. Without these our online store will not function and you wont be able to view the avongard products available in your country. Our demec gauge is supplied completely with reference and setting bars, a pack of 100 standard locating. We manufacture lifts elevators for domestic home purpose, hospital,hotel, industry etc. As long back as i can rememeber, we have used the ctl crack width gauge which is a transparent piece of plastic on which are marked lines of different widths from 0. The carer programme is the first phase of an alternative learning experience to encourage students to consider working in underserved areas, offering more educational continuity, and. This makes the demec strain gauge ideal for strain measurement and crack. Demec 2017 monday 27 tuesday 28 november 2017 manchester central convention centre, manchester. Crack width gauge the crack width gauge is specifically designed to assist those who survey and report on damaged buildings. Demec mechanical strain gauge and accessories a demountable mechanical strain gauge has advantages of accuracy, reliability and cost over other methods of strain. Demec mechanical strain gaugemsm31 industrysearch australia. Demountable mechanical strain gauge by bestech 200 strainshr can be measured at an accuracy of 5 x 106. This website uses cookies so that we can provide you with the best user experience possible. Demec was established on june 6, 1978 by an act of the delaware general assembly, and incorporated on july 12, 1979.