Oxymax COS22 Technical data
Endress+Hauser 29
13 Technical data
13.1 Input
Measured values Dissolved oxygen [mg/l, µg/l, ppm, ppb or % SAT or hPa]
Temperature [˚C, ˚F]
Measuring ranges Measuring ranges apply for 20 ˚ (68 ˚F) and 1013 hPa (15 psi)
Measuring range Optimum operational range
1)
COS22-*1 0.01 to 60 mg/l
0 to 600 % SAT
0 to 1200 hPa (0 to 6 psi)
0 to 100 Vol%
0.01 to 20 mg/l
0 to 200 % SAT
0 to 400 hPa (0 to 6 psi)
0 to 40 Vol%
COS22-*3 0.001 to 10 mg/l
0 to 120 % SAT
0 to 250 hPa (0 to 6 psi)
0 to 25 Vol%
0.001 to 2 mg/l
0 to 20 % SAT
0 to 40 hPa (0 to 6 psi)
0 to 4 Vol%
1) Applications in this range guarantee a long service life and minimum maintenance
13.2 Performance characteristics
Response time From air to nitrogen at reference operating conditions:
• t
90
: < 30 s
• t
98
: < 60 s
reference operating
conditions
Reference temperature: 25 ˚C (77 ˚F)
Reference pressure: 1013 hPa (15 psi)
Reference application: Air-saturated water
Signal current in air COS22-*1 (standard sensor): 40 to 100 nA
COS22-*3 (trace sensor): 210 to 451 nA
Zero current COS22-*1 (standard sensor): < 0.1 % of the signal current in air
COS22-*3 (trace sensor): < 0.03 % of the signal current in air
Measured value resolution
COS22-*1 (standard sensor): 10 ppb in aqueous, 0.2 hPa or 0.02 Vol% in
gaseous media
COS22-*3 (trace sensor): 1 ppb in aqueous, 0.02 hPa or 0.002 Vol%
in gaseous media
Corresponds to the recommended measured value resolution at the transmitter
Maximum measured error COS22-*1 (standard sensor): ≤ ±1 % of measuring range + 10 ppb
*
COS22-*3 (trace sensor): ≤ ±1 % of measuring range + 1 ppb
*
*
at reference operating conditions
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