Process (2)0 pages

"Dissolved Oxygen: Hach LDO nnProbe How does Luminescent Dissolved Oxygen work? nn

Process Instruments

nnThe HACH LDO sensor is coatedwith a luminescent material. Blue
light from an LED is transmitted to
the sensor surface. The blue light
excites the luminescent material. As
the material relaxes it emits red light.
The time from when the blue light
was sent and the red light is emitted
is measured. The more oxygen that
is present the shorter the time it
takes for the red light to be emitted.
This time is measured and correlated
to the oxygen concentration.
Between the flashes of blue light a
red LED is flashed on the sensor and
used as an internal reference. Primary Applications

Ε Wastewater Industrial WaterՕ Drinking Water >

nnSpecifications*

LDO Flow CellNew and improved Air Blast Head Measuring Range Sensitivity Probe Immersion Depth andPressure Limits 0 to 20.0 ppm, 0 to 20.0 mg/L, 0 to 200% saturation 0.5% of span Accuracy 107 m (350 ft.), 1050 kPa (150 psi), maximum >

nnThis sensor requires a Hach sc100 or sc1000 Digital Controller. See pages 388-391 for details.

Measurement: ѱ0.2% of spanTemperature: 0.2ѰC Transmission Distance 100 m (328 ft.) maximum1000 m (3280 ft.) maximum whenused with a termination box Repeatability >

nnPr od. No. Description Price

0.5% of span >

nn5790000 HACH LDO nn

Ѯ

nnDissolved Oxygen Probe $1,410.005790001

Response Time at 20C >

nnHACH LDO nn

ڮ

nnProbe Class I, Div 2 1,491.00

Sensor Cable (integral) To 90% in less than 40 seconds
To 95% in less than 60 seconds Resolution 10 m (33 ft.) terminated with quick-disconnect plug >

nnACCESSORIES

Below 10 ppm:0.01 ppm or mg/L, ѱ0.1%saturationAbove 10 ppm:0.1 ppm or mg/L, ѱ0.1% saturation >

nn5867000 Junction box for cable extensions 103.005796000

Wetted Materials >

nn25 ft. extension cable 127.005796100

Probe: Foamed Noryl >
and 316stainless steel Sensor: Polybutyl methacrolate >

nn50 ft. extension cable 190.005796200 100 ft. extension cable 254.006190250

Interferences Dimensions >

nnLDO Air Blast head kit 90.005795100

No interferences from the following:H 60 x 292 mm (2.4 x 11.5 in.) >

nnAir Blast Cleaning System, 115 V 722.005795200

Weight >

nnAir Blast Cleaning System, 230 V 722.006170000

1.4 kg (3 lbs., 2 oz.) >

nnHigh Output Air Blast Cleaning System, 115 V 1,205.006170100

Warranties >

nnHigh Output Air Blast Cleaning System, 230 V 1,205.007300700

Probe: 3 Years; Sensor Cap: 1 Year >

nnLDO flow cell 270.00

Hazardous Location Ratings >

nnREPLACEMENTPARTS nn

+1 +1 +2 +2 2 S, pH, K , Na , Mg , Ca ,NH ETL listed (cETLus marked) toCanadian and US General Safety
and Hazardous (Class I, Div. 2)Locations >
+3 +2 +2 +2

nn5791100 Replacement Sensor Cap 127.00 nn

4+1 , Al , Pb , Cd , Zn , Cr (total), Fe >
+2 , Fe >
+3 , Mn >
+2 , Cu >
+2 ,Ni >

nnMOUNTINGKITS nn

+2 , Co >
+2 , CN >
-1 , NO >
-2 -1 3-1 , SO >
4-2 , S ,PO Noryl >

nn5794400 Pole Mount Kit 343.005794300 nn

4+3 , Cl , anion active tensides,crude oils, or Cl >

nnBall Float Mount Kit 471.00 nn

2-1 ή is a registered trademark ofGeneral Electric Co. Operating Temperature 0 to 50C (32 to 122аF) >

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For more information, call to request

Flow Rate >
*Subject to change without notice.

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Literature #2455, or visit www.hach.com

None required >

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See page 151 for reagents, test kits, and accessories for measuring dissolved oxygen in the lab or field.

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Find it here Buy it today on www.hach.com

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413 U.S. customers only.

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