Trang chủ / Sản phẩm / Thiết bị phân tích online / Cảm biến / HACH LDO ® PROBE MODEL 2
Các ứng dụng
• Nước thải
• Nước thải công nghiệp
• Nước uống

Accurate process monitoring of dissolved oxygen in water for precise aeration control

Hach's next generation DO Probe, the LDO sc Model 2 (Luminescent Dissolved Oxygen), accurately measures dissolved oxygen levels in water by utilizing luminescent dissolved oxygen technology within the O2 sensor (oxygen sensor) cap ensuring high levels of accuracy. The Hach LDO probe requires no calibration and can be used right out of the box. Using this DO probe to monitor dissolved oxygen levels in your water applications saves time and money through minimum maintenance (no electrolyte solution) and overall reduction in aeration blower energy usage.

An improved body design optimizes the probe’s temperature sensor to provide an even faster response time to process variability as well. The probe comes with a three year warranty, and the sensor cap has a two year warranty.

  • No Calibration Required

  • No Membranes to Replace

  • No Missed Cleaning Cycles

  • No Drift

  • No Complications




0 to 20.00 ppm

0 to 20.0 mg/L (or ppm)

0 to 200 % air saturation


± 0.05 ppm below 1 ppm

± 0.1 ppm below 5 ppm

± 0.2 ppm above 5 ppm

Response Time

T95 < 60 s

T90 <40 s


0.01 ppm DO

0.1% saturation


± 0.1 (mg/L) ppm

Flow Rate

None required

Sensor Immersion


Down to 345 kPa 345 kPa (50 psi),

maximum; accuracy may not be maintained at this depth

Transmission Distance

1000 m (3280 ft.) maximum when

used with a termination box

Cable Length

10 m

(options with 30m, 60m, 100m)

Dimensions (D x L)

1.9 in x 10 in

(48.25 mm x 254 mm)


2.2 lbs. (1 kg), probe only



  • Datasheet
  • LDO Digital Sensor, Model 2, User Manual