Ohaus ST20D Dissolved Oxygen Pen Meter with Temperature Display Starter pen meters provide what should be expected of a small pen meter: simple, fast, straightforward, no-frills yet highly accurate operation time and time again. They are the economical option when you are looking for accurate measurements with no restrictions. With durable plastic housing, a protective cap that safeguards the sensor, and an automatic shutdown feature to preserve battery life, the Starter pen meters can endure consistent use in rugged environments. Equipped with a wrist strap that helps to prevent unintentional dropping, Starter pen meters are constructed with an IP67 waterproof design that can prevent water damage when accidentally dropped into liquid. Specifications: Meter Type: Dissolved Oxygen Measurement Range: 0 – 19.9 mg/L Accuracy ±: 5 °C Measurement Resolution: 1 mg/L ATC: Yes Temperature Compensation: Automatic Automatic Shutdown: Yes, after 6 minutes of non-use Battery Life: 100 hours with disposable batteries Calibration: 1-point Dimensions: 5 in x 7.28 in x 1.77 in (38 mm x 185 mm x 45 mm) (LxHxW) Net Weight: 88 oz (110 g) Measurement Range (Temperature): 0 °C ; 99 °C Number of Buttons: 3 Power: 4 AG13 batteries (included) Protection Rating: IP67 Temperature Display: Yes Temperature Sensor: 50 KΩ NTC Working Environment: 41°F – 104°F, 80%RH, non-condensing (5°C – 40°C, 80% RH, Non-condensing) Wrist Strap: Yes Starter Pen Meters Data Sheet ST20D Manual
