| Monitored
gases - detect a target gas or hydrolysis byproducts? |
| Suitability | -
monitoring location e.g. duct, tool jungle, room air, etc. - physical
constraints e.g. temperature, humidity, RF interference |
| Sensitivity
- how repeatable is detection of a specific gas concentration? |
| Stability
- how does response degrade with time? |
| Response
Time - how fast would it detect a leak? |
| Selectivity
- how specific is it to a target gas? |
| Poisoning
- loss of sensitivity after exposure to high gas concentration |
| Useful
life - how long before sensor cell or electrolyte needs replacement? |
| Maintenance
- how often and how long the system would be off-line? |
| Warm-up
period - how soon the system would be on-line after maintenance? |
| Ease
of calibration - can facility staff be trained or does system need special skills? |
| Smart
features - self diagnostics check on circuit and sensor performance |
| Immunity
to false alarms - is system shielded and grounded against RFI/EMI interference? |