Hach LDO sc Model 2, DO Probe with Luminescent Dissolved Oxygen Technology
Accurate monitoring of dissolved oxygen in source water and for precise aeration process controlThe Luminescent Dissolved Oxygen (LDO) sc, Model 2 is an optical dissolved oxygen probe that accurately measures dissolved oxygen levels in water.This optical DO probe has a robust design with a small
Introduction
Accurate monitoring of dissolved oxygen in source water and for precise aeration process control
The Luminescent Dissolved Oxygen (LDO) sc, Model 2 is an optical dissolved oxygen probe that accurately measures dissolved oxygen levels in water.
This optical DO probe has a robust design with a small footprint which allows for easier handling and enhanced durability from the LDO 1. Using this probe will save you time and money through overall reduction in your aeration blower energy usage.
This Hach LDO probe comes ready to use right out of the box, with no calibration required for life of the sensor cap.
The probe comes with a 3-year warranty, and the sensor cap has a 2-year warranty and is compatible with all Hach digital SC controllers.
Luminescent Dissolved Oxygen Technology
The LDO sc Model 2 uses luminescent dissolved oxygen technology within the O₂ sensor (oxygen sensor) cap ensuring high levels of accuracy.
Virtually no Maintenance Required
As this is an optical dissolved oxygen probe, there is virtually no maintenance required — as there are no membranes to replace, no electrolyte solution to replenish, and no anodes or cathodes to clean. Compare this with traditional optical DO probes which require sensor calibration (increasing maintenance).
Just replace the cap every two years, and customizable service trigger indicators ensure you'll never miss a cleaning cycle or cap replacement.
Claros Enabled
This instrument connects to Claros, Hach’s innovative Water Intelligence System, enabling you to seamlessly connect and manage instruments, data, and process – anywhere, anytime.
Benefits
No Calibration Required
The Hach LDO sc probe uses luminescent dissolved oxygen technology. Traditional membrane style DO probes require sensor calibration, which increase maintenance requirements.
No Missed Cleaning Cycles
The Hach LDO sc probe is equipped with Prognosys, a predictive diagnostic system, that allows you to be proactive in your maintenance by alerting you to upcoming instrument issues. Know with confidence whether changes in your dissolved oxygen level measurements are due to changes in your instrument or your water. To make sure routine cleaning cycles are never missed, the probe offers operators customizable diagnostic alert indicators, ensuring the probe can operate at its maximum performance level.
Customizable service indicators trigger a service message so that a cleaning cycle is never missed.
No Complications
Our newest Model 2 DO probe has a robust design with a smaller footprint allows for easier handling with enhanced durability.
No Membranes to Replace
There is virtually no maintenance with Hach's breakthrough luminescent technology. There are no membranes to replace, no electrolyte solution to replenish, and no anode or cathode to clean.
No Drift Technology
Cutting-edge 3D calibration procedure is conducted prior to shipping, the DO probe will not drift and is more accurate than ever before, compared to membrane style probes.
Specifications
Technical Attributes
| Accuracy | Below 5 ppm: ± 0.1 ppm |
| Accuracy 2 | Above 5 ppm: ± 0.2 ppm |
| Accuracy 3 | Temperature: ± 0.2 °C |
| Body material | Stainless |
| Cable Length | 10 m (33 ft) |
| Calibration Method | All Probes are factory calibrated and ready to use Air Calibration: one point, 100% water saturated air Sample Calibration: comparison to standard instrument, or comparison to Winkler Titration method |
| Communication | Modbus via SC controller |
| Controller Compatibility | SC4500, SC1000, SC200 |
| Diameter | 48.25 mm |
| Dimensions (D x L) | 48.25 mm x 254 mm |
| Flow Rate | None required |
| Hazardous Location Ratings | ETL listed (cETLus marked) to Canadian and US General Safety and Hazardous (Class l, Div. 2) Locations |
| Interferences | No Interferences from the following: H2S, pH, K+, Na+, Mg2+, Ca2+, NH4+, Al3+, Pb2+, Cd2+, Zn2+, Cr (total), Fe2+, Fe3+, Mn2+, Cu2+, Ni2+, Co2+, CN-, NO3-, SO42-, S2-, PO43-, Cl-, anion active surfactants, crude oils, Cl2 < 4 ppm |
| Length | 254 mm |
| Measurement Range 2 | 0 - 20.00 mg/L |
| Measurement Range 3 | 0 - 200% saturation |
| Operating Temperature Range | 0 - 50 °C |
| Options | None |
| Pressure Range | Max 3.5 bar |
| Range | 0 - 20.00 ppm |
| Repeatability | ± 0.1 ppm (mg/L) |
| Resolution | 0.01 ppm (mg/L) 0.1% saturation |
| Response Time | T90 < 40 s T95 < 60 s |
| Sensor Cable | 10 m (31 ft.) terminated with quick-disconnect plug |
| Sensor Immersion Depth | Down to 34 m (112 ft.), 345 kPa (50 psi), maximum; accuracy may not be maintained at this depth |
| Sensor Thread | Outer thread |
| Storage Conditions | -20 °C to 70 °C |
| Transmission Distance | 100 m (328 ft.) maximum |
| Transmission Distance | 400 m (1312 ft.) maximum when used with a termination box |
| Warranty | 36 months |
| Weight | 1 kg (2.2 lbs), probe only |
| Wetted Materials | Sensor Cap: Acrylic; Probe Body: CPVC, Polyurethane, FKM/FPM, Noryl, 316 Stainless Steel |
| What's included? | Includes: sensor with cable, calibration bags, and manual |
