Chris, Interesting picture. What's on the axes of your image? Can this picture be seen, effectively, as a side-scan sonar image with a stationary transducer?...
Speaking of RS-232, I’ve seen air sonar designs where the output of RS-232 drivers (e.g. MAX202) was used to drive ultrasonic transducers. The drivers...
The liquid will expand/contract due to temperature variation. The dielectric constant could change also. These changes would depend on the chemical content...
Nick, Thanks. They didn't help much really. But in the long run did some searching through Analog Devices and Burr-Brown ICs and found some instrumentation...
Hi, I'm working with MPX4115 (pressure sensor) from Freescale semiconductors. I'd like to know the proceedure for: 1. Interfacing it with a PIC16F877a 2....
Hi I am a scuba diver and I am trying to build a ROV(Remotly Operated Vehicale) and i need it to be able to tell it`s onboard computer(PIC`s) how deep it is by...
I have used sensors like this 287-1116-ND from Digi-Key. They are about $75 to $100, not cheap and you have to do your own amplification and temperature...
... Operated ... (PIC`s) ... BAR or ... find ... budget.Does ... There are some available from Honywell. I do not know what type of package you require but a...
intersemsa ms5535 or ms5541 These are 14bar absolute (130m) sensors and are used in several dive computers. http://www.intersema.com/site/technical/ms5535.php ...
Have you looked on E-Bay? I was just looking there for 1500-2000lb sensors but I remember seeing some others I think in the range you were looking for....
Get creative! Dive guages in that range are common. There is an IC for less than $10 that gives pressure from intell I think. Also, a tube, open at one end ...
hi dudes i need datasheet of MQ-5 for sensing ch4(methan) is there any budy help me and sending link of this datasheet if any one know a better sensor for ch4...
Hi Ehsan-- Take your pick:-) http://tinyurl.com/2agsdm Regards/Roger, in Bangkok On Feb 17, 2008 10:18 AM, Ehsan Moazen 1367/5/9 <ehsan_moazen1@...> ... ...
Hi All, Im doing my Masters in Gas Sensors based on Semiconducting MOs. Im collecting info to get an overview of the major firms into sensors & also the...
Hello Here's another LINK to an MQ-5 Gas Sensor. I just Googled the name and this 2 page PDF file was returned. My Adobe reader needed to be updated with the...
... Water really complicates the issue. It has a dielectric coefficient of 80, and air is about 1. I don't know what granule you want to measure, but if it is...
What kind of sensor should you use when you are monitoring the level of a viscous substance like toothpaste? the sensor is to be placed in a hopper -- it is a...
Hello, New to the group but I thought I would jump in on this one... A few questions first... What is the rate of use of this material? What kind of resolution...
Keith, I think you have the better answer. For one you don't have any sensing down in the material to get in the way of mixing, cleaning, or whatever else...
Depending on the conductivity of the substance, and the container material, an external current sensing meter (Off the shelf from an RV or camper supplier, ...
I want to develop something that detects if it is in the ear or not. It will be in a set of headphones and I want it to be small and use the least amount of...
A capacitive sensor would work fine I suppose, as long as the application is not sensitive to false triggering. Capacitive sensors are sensitive to anything...
If you have a piezo transducer in the ear-plug, it could work as a microphone. You could potentially listen to the heart-beat, and you wouldn’t need to run...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
