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> New industrial scientific M40 gas monitor * * feb 2010
New industrial scientific M40 gas monitor * * feb 2010
WORKING Confined space entry gas monitor detector
Firstly please let me ask you this:
DO YOU WANT A WORKING GAS DETECTOR,
A quality Monitor for a sensible price
Open (no) box, unused, unmarked.
by INDUSTRIAL SCIENTIFIC M40 4-gas
New M40, 4gas monitor, working 100%
the M40 monitor 4-gas monitor.
Heavy Duty locking quick release belt clip.
Comes with a "used" protective pouch. (better than none at all)
This is for a perfect, 100% working,
LEL/methane/explosive/multiple flammable,
FREE re-calibration in 6 months (plus and parts and postage only)
Not many sellers show you these screens !!!! If you wonder why !!
this is it's final monitoring display screen
showing all 4 gas concentrations being read real-time.
This is an indication it is working correctly.
It should always look like this (or similar) for a 4 gas unit.
If it doesn't, then you're in for a very expensive surprise
when you price up replacement sensors and calibration costs.
I don't show "stock" photos from web sites.
Not a manufacturers web site listing description.
What you see is what you get with no surprises.
If it doesn't look like or perform like I say,
SEND IT BACK FOR A FULL REFUND.
More Gas Monitors HERE: click on this LINK
I CAN NOT AND WILL NOT BE HELD RESPONSIBLE FOR LOSS OR DAMAGE
* Gas detectors or monitors are expensive when new and require regular calibration and maintenance to keep them running as designed.
* Most don't know or understand that the sensors degrade with age and abusive exposure to most industrial chemicals, heat or shock.
* The sensors can cost from $160 to $350 each, (4 usually required) more for some types, and have a limited shelf and operation life of 1yr to 3 yrs.
* Most "multi-gas units read oxygen, carbon monoxide, hydrogen sulfide and explosive (LEL) gasses. With some more expensive optional sensors.
* The oxygen sensor is usually the first to die followed shortly afterwards by any/all of the others.
* Replacement of all 4 sensors and usually a calibration is then required and can cost megabucks.
* This is asuming they are treated with respect and most won't read correctly or calibrate after 1 to 2 years max, some will, some won't.
* So when you are searching used detectors it can be very expensive if you make the wrong choice based on a sellers description only.
* Most sellers either don't know the above, or deliberately skate round the facts in order to make a sale, indicating it works ok.
* This is NOT always the case, some sellers actually tell you it's 3 years old and will need sensors replacing immediately and price them accordingly.
* Look for the clean and clear photographs of actual units for sale, not some "stock photo from the manufacturers web site"
* The same goes for the description of its physical condition and operation, quoted manufacturer's specs mean nothing if it doesn't work like that.
* Means nothing if the seller can't verify it works as designed. give an actual date it was built, OR the price is low to justify it's condition.
