Description
DO Meter, ST400D-B – 30378541
Optical DO probe requires minimal maintenance and offers immediate measurement readings. No warm up or sample preparation needed.
Large backlit LCD screen provides easy to read results – even in low light environments. Ideal for secure field use with a meter stand, wrist strap and durable IP54 housing.
The 99-measurement library stores data for future reference and allows for easy one-touch recall of the last calibration data.
Family Tag Line:  High-Performance, Low-Maintenance Dissolved Oxygen (DO) Meter with Optical Technology for Accurate Measurements
Family Name:  Starter 400D DO Portable
Display:  Backlit Color Liquid Crystal Display (LCD)
Applications:  Field and lab Dissolved Oxygen measurement
Construction:  ABS Housing
Design Features:  99 measurement memory, last calibration data recall, auto barometric pressure measurement, auto temperature compensation with manual salinity compensation
Communication:  NA
Family Overview:  For over a century, OHAUS has perfected the art of measurement through our line of weighing products. Taking the same approach to our weighing equipment, OHAUS now delivers Starter ST400D – a practical, affordable, low-maintenance DO Portable Meter equipped with optical technology. The ST400D is ideal for applications that require simple yet accurate DO measurements.
Operation:  4 AAA batteries (included)
Model No.:  ST400D-B
Measurement Range:  0.00 – 20.0 mg/L(ppm);0 – 50°C
Measurement Resolution:  0.01 mg/L;0.1%;0.1 °C
Accuracy ± (mV):  
Display:  Color LCD Graphics
Working Environment:  41°F – 104°F, 80% RH, Non-condensing (5°C – 40°C, 80% RH, Non-condensing)
Net Weight:  0.35 lb (0.16 kg)
pH accuracy (±):  
Dimensions:  5.91 in x 1.38 in x 3.54 in (150 mm x 35 mm x 90 mm) (LxHxW)
Accuracy ± (Temperature):  0.3 °C
Parameter:  Dissolved Oxygen
Accuracy:  ±0.2 mg/L(<8 mg/L) or ±0.3 mg/L(8~20 mg/L);±0.3 °C
Power:  4 AAA (LR03) Batteries (Included)






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