home > Environmental Sensor Top > Optical Dissolved Oxygen Sensor DOS-20

Combination use with MLSS Analyzer for biological treatment or MBR process
Robust Design -Inert ABS construction
Long Term Stability -No Influence by water flow rate

Detector: DOS-20
Detector: DOS-20
Optical Dissolved Oxygen Sensor
Robust Design
IP65 Water Jet Proof
Simple Key Operation

Trasmitter -Outdoor Type-
Mounting Attachment (DA-1) Replacement Sensor Cap (DOS-CP)
option   option


Detector DOS-20 ^ Transmitter (Outdoor Type) SC-DO
Measuring Parameter Dissolved Oxygen (mg/L)@ Temperature ()@Dissolved Oxygen Saturation Rate () @Oxygen Partial Pressure (kPa)
Measuring Range/
Display Resolution
mDissolved Oxygenn 0.00 `20.00mg/L (0.01mg/L)@
m Dissolved Oxygen Saturation Raten 0.0 `200.0% (0.1%)
mTemperaturen0.0 `50.0 (0.1) @@
m Oxygen Partial Pressuren0.0 `150.0kPa (0.1KPa)
Measurement Accuracy ±0.1mg/L (0`8mg/L) , ±0.2mg/L (8`20mg/L)
Response Time 90%<45 seconds, 95%<60 seconds (Water temperature : 25)
Sensor Cap Replacement Term About 3 Years
Power Supply AC100-240V@15VA max.
Signal Output 4-20A(load resistance 500 max.) x2
Relay Output non-voltage C-contact capacity 240VAC, 2A resistance load
Cleaning Output Connect to a cleaning device
(non-voltage A-contact capacity 240VAC, 2A resistance load)
Calibration 1-Point, 2-Point, Concentration Option, Initialized Calibration
Correction [Salinity Concentration Correction] 0`42PSU [Altitude Correction] 0`5000m
Measuring water temperature 0 to 50
Ambient Temperature Transmitter F -20 to 50@
Humidity 95%Rh or less (Avoid direct sunlight)
Material Detector ABS
Transmitter Polycarbonate
Dimensions Detector Φ44 x 203mm
Transmitter 162(H)x240(W)x75(D)mm
Weight Detector 850g (including 10m cablej
Transmitter Approx.1.6kg (including the Mounting Bracket)
Degree of
Detector Underwater type, maximum depth of 200m@(IP68)
Transmitter Jetproof type (IP65)
Cable Length 10m
Option Mounting Attachment (DA-1), Replacement Sensor Cap (DOS-CP)