This sensor measures the amount of Oxygen (O2) gas
in
air.
 |
Model SO-111: |
$289 |
|
 THERMISTORS VERSUS THERMOCOUPLES
|
Apogee Instruments offers oxygen sensors with either a
thermistor or thermocouple for sensor temperature
measurement.
We recommend thermistors
for sensor temperature measurement of the Oxygen sensor.
|
THERMISTORS |
v. |
THERMOCOUPLES |
|
|
+ |
require no reference temperature |
|
- |
require
accurate ref.
temperature |
| + |
larger signal |
|
- |
smaller signal |
|
+ |
single-ended channel |
|
- |
differential
channel |
| + |
inexpensive,
rugged wire |
|
- |
expensive
wire |
|
- |
require
excitation
voltage |
|
+ |
self-powered
|
|
- |
multiple
steps in
datalogger program |
|
+ |
easy
datalogger
program |
|
|
|
 |
 |
|
|
