[Stoves] Emission testing

[frank]

Stovers

Feel like I am beating a dead horse but here is more info regarding 
these type of semi-conductors sensors. No need to buy a CO, H and CH4 
sensors. Just one and call it 'combustible gases'
 IMO. and no need to put 'Dr' in front of my name. I tried but never got 
close. : )

Frank


Dear Dr. Shields,

My colleagues inform me that you have seen a cross-sensitivity between 
CH4 and CO when using our sensors.  The sensors do, indeed, have a 
degree of cross sensitivity, since all SnO semi-conductor sensors will 
detect, to differing degrees depending on sensor type and sensor 
temperature, various oxidisable gases.   Where possible, we try to avoid 
provision of sensors for applications in which the partial pressure of 
more than one detectable gas is relatively high, or the cross 
sensitivity of the sensor for each gas is equivalent.  Often, sensors 
can be chosen with a ten fold specificity for a particularly gas.

Please let me know if I can inform you further.

Best regards,

Steve

Dr. Stephen Hunt

President and CEO
Qubit Systems Inc.
4000 Bath Rd. Second Floor
Kingston, Ontario, Canada K7M 4Y4
Phone: 613-384-1977
Fax:  613-384-9118
www.qubitsystems.com


-- 
Frank Shields
Soil Control Lab
42 Hangar way
Watsonville, CA  95076
(831) 724-5422 tel
(831) 724-3188 fax
frank at compostlab.com
www.compostlab.com