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NOTICE BOARD From: Durk Wildschut - 29.4.2008 Durk is looking for a sensor to detect the thin and thick spots in artificially made yarns. The sensor shown is from Elektrotec / Heberlein and is apparently no longer available. Anyone that can help, please email Durk direct. Durk Wildschut Email : durkwildschut@grupoeuronete.pt From: Thakur Ajit - 15.2.2008 Sir, Can you suggest me the manufacturer/manufacturers of sensors with the following requirements. Preferably Indian Make I want to maintain Level of the Tank High, Medium & Low.Tank height is maximum 1Metre. 1. which can work in ALKALINE SOLUTIONS having Temperature @ 80 Degree Centigrade 2.The main criteria is that it that it should be rugged,reliable and should work in humid environment for longer periods. Anticipating an early reply from you, Regards, Thakur Ajit Email: thakurajit89@yahoo.co.in From Ganapathy - 17.12.2007 Hi, I am trying to make Load Cells using Aluminium material, but i am encountering problem on bonding Strain gage (gage doesnt bond with the material properly), Plz suggest me a clear bonding procedure. With Regards, Ganapathy. Email: ganapaathy@yahoo.co.in From: Mark Kilburn - 14.12.2007 I require sensors for accurate measurement TCP(tricresyl phosphate) and in air and Particle counting. (Constant or pulsed). The TCP will be contained within Oil Vapor. Application is monitoring within engine room with high pressure hyd hoses. Will look at any sensor types including Chemical, Particle counters and Spectrum. A backend module would be ideal (why re-invent the wheel). Please contact me if you are available to assist Mark Kilburn Csmu technologies 61 2 49661826 Email: mark.kilburn@csmu-tech.com.au From: Kartik Panchal - 10.12.2007 Good morning, I like to know if it is neccessory that center of gravity of the load must pass thro center of load cell OR from the point of loading at the end of the load cell to avoid negetive loading effect.Can you make a sketch how to fix load on the the cell. Thanks, Kartik D Panchal. E mail- dinesh@pwsengineers.com From: DR. A.K.Gulati - 11.11.2007 Hi ! I am pediatrician in India looking for a sensor manufacturer for bedwetting alarms, somewhat like www.dri-sleeper.com. Will it be possible to help me? Thanks Sincerely, Dr A K Gulati Email: gulatianil@hotmail.com From: Yair Tzur - 1.10.2007 Hi, I need a sensor that detects break of glass in vehicles. The sensor will be on 24/7, so it should NOT be activated because of holes in the roads, for example. Is it possible to create a sensor that detects ONLY break of window and not be activated of mistakes (like vibrations or movements of the vehicle)? Thanks! Yair Tzur Email ytytyt@gmail.com From: Varun - 21.9.2007 Sir, Can you suggest me the manufacturer/manufacturers of sensors with the following requirements: 1. which can work in ocean conditions 2. Mainly for tidal measurement 3.The main criteria is that it that it should be rugged,reliable and should work in saline environment for longer periods. Anticipating an early reply from you, With regards, Varun Email: gvarunakumar@yahoo.com From: Wisarute Decharin - 10.8.2007 I visited your site and it was a good resources as I spent hours browsing your site. Well, I was wondering if you can help me find the following sensors to match my work. 1. can select the recording interval from 1 minutes to 30 minutes or better. 2. can measure depth range 0-10 meters or better (>34psi) 3. has internal logger for over 13,000 records 4. has internal backup batteries 5. accuracy of 3 mm or better (something like than 0.03% FSO) Many thanks in advance for your help. Best Regards, Wisarute Decharin ( Kong ) Service Coordinator S.D.A. Group Company Limited Email: kong@sdagroup.com From: Gustav Rogstrand - 1.8.2007 I am hoping to get some help with choosing a sensor for detecting the electrical current in the power supply to fans. We are trying to measure the volumetric air output from poultry barns. The problem is that the fans run on thermostat so we don't really know when they go on or how long they stay on. The problem is further complicated by various (7) ventilation stages that consist of different combinations of fans (seven 36" fans and seven 22" fans). The selection of stage, timing and length of the ventilation sequence is all atomized and connected to the thermostat. We thought we would somehow install sensors in the vicinity (or around) each power supply cable to each of the fans and connect that to a Campbell Sci data logger to log the time on and the time off for all fans during a full poultry production cycle (6 weeks). The fans are single speed so we only need to know on/off, i.e. a digital 1/0 (current or no current) signal out to the loggers would be enough. Since there are many fans and many barns we would like to keep the cost as low as possible. Would you be able to advice on the simplest way to measure this and a low cost sensor that would do the job? Is there limitation in the cable length that can be used with digital outputs from the sensors? The barns are 120 m long so the furthest fan will be 60 m away from the logger. I would be very happy for any advice on this matter. Gustav Rogstrand Waste Management Engineer, P.Eng., MSc. BC Ministry of Agriculture and Lands Resource Management Branch 1767 Angus Campbell Rd Abbotsford, BC V3G 2M3 Canada Telephone: 604 556-3111 Cell phone: 778 668 0037 Facsimile: 604 556-3099 From: David Clark - 5.6.2007 Hello Mike, The mast of my sailing dinghy passes through the deck where it is hinged to the floor below. Wind via the sail and mast exert a pressure to the deck to propel the boat.I wish to measure this pressure and would appreciate your advise as to how this could be done. Kind regards. David Email: d.clark4@ukonline.co.uk From: Manpreet - 5.6.2007 We need a very specific type of motion sensor that can detect quick dog movements. In our application we need to know the true position of "gravity" even when dynamic acceleration is taking place. That is, we want to use gravity as an orientation reference. We were using a 3-axis accelerometer to determine gravity as reference, however, this signal can only be isolated when the accelerometer is motionless. We need to be able to get fix reference of gravity even when there is linear and centripetal acceleration. For example, we have a PCB board mounted in the dog collar and when a dog runs or move his head we need to know the true orientation of this PCB board in real-time. The problem we are facing is when the dog makes quick movements or running, because of dynamic acceleration we cannot tell which way is the earth gravitational pull? thus we get a wrong output of position. Is there a motion sensor that can over come dynamic acceleration and tell us the true position of a PCB board mounted on the dog and use gravity as an orientation reference in real-time? Thank you. Manpreet Email: manpreet@bumperboy.com For Glossary of Terms page, click here ... 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