10
Technical data
General specifications
Manufacturer
Hauser
Instrument name
Liquisys COM 223
Liquisys COM 253
Input
Measured variables
O
2
, temperature
O
2
measurement with sensor COS 41 / COS 4 / COS 4HD
Display and measuring range
0 ... 20 mg/l or 0 ... 200 % SAT or 0 ... 400 hPa
Temperature compensation range
0 ... 50 °C
Altitude adjustment range
0 ... 4000 m
Salinity adjustment range
0 ... 4.0 %
Nominal slope (sensor in air, 25 °C, 1013 hPa)
290 nA
Required conductor cross-section
COM 223
COM 253
0.75 mm
2
/ AWG 18
1.50 mm
2
/ AWG 14
Terminal cross-section
2.5 mm
2
Maximum cable length to sensor
50 m
O
2
measurement with sensor COS 31 / COS 3 / COS 3S / COS 3HD
Display and measuring range
0 ... 60 mg/l or 0 ... 600 %SAT or 0 ... 1200 hPa
Temperature compensation range
0 ... 50 °C
Pressure compensation range
500 ... 1100 hPa
Location height setting range
0 ... 4000 m
Salinity setting range
0 ... 4 %
Nominal slope (sensor in air, 25 °C, 1013 hPa)
290 nA
Required conductor cross-section
COM 223
COM 253
0.75 mm
2
/ AWG 18
1.50 mm
2
/ AWG 14
Terminal cross-section
2.5 mm
2
Maximum cable length to sensor
100 m
O
2
measurement with sensor COS 71
Display and measuring range
0 ... 20 mg/l or 0 ... 200 % SAT or 0 ... 400 hPa
Temperature compensation range
0 ... 50 °C
Pressure compensation range
500 ... 1100 hPa
Location height setting range
0 ... 4000 m
Salinity setting range
0 ... 4 %
Nominal slope (sensor in air, 25 °C, 1013 hPa)
8000 nA
Required conductor cross-section
COM 223
COM 253
0.75 mm
2
/ AWG 18
1.50 mm
2
/ AWG 14
Terminal cross-section
2.5 mm
2
Maximum cable length
100 m
O
2
signal input
Signal current
0 ... 3000 nA (DX/DS) or 0 ... –7500 mV (WX/WS)
Slope adaptation
75 ... 140 % of nominal slope (COS 71: 50 ... 150 %)
Temperature measurement
Temperature sensor
NTC, 30 k
Ω
at 25 C
Display range
–10 ... +60 °C
Digital inputs 1 and 2
Voltage
10 ... 50 V
Current consumption
max. 10 mA
%
Ω
°C
OM253D10.CHP
Liquisys M COM 223 / 253
Technical data
Hauser
73