After more than a century of perfecting the art of measurement through our durable weighing products, OHAUS precision is now available in a line of pen meters that provide accurate measurement of pH, oxidation-reduction potential (ORP), conductivity, salinity, and total dissolved solids (TDS).
Starter pen meters are the economical option when you are simply looking for meters that will provide accurate measurement without restriction.
Applications
Dissolved oxygen (DO)
Display
Liquid crystal display (LCD) display with secondary information line (on select models)
Operation
4 1.5V batteries (included)
Communication
N/A
Construction
ABS housing
Design
Easily replaceable electrodes, automatic shut off feature
Specifications
| Measurement Range | 0.0 - 80.0 ppt |
| Measurement Resolution | 0.1 mg/L |
| Calibration | 1 Point - In air. No Calibration solution required. |
| Temperature Compensation | Automatic |
| Working Environment | 41°F - 104°F, 80%RH, non-condensing (5°C - 40°C, 80%RH, non-condensing) |
| Net Weight | 3.88 oz (110 g) |
| Accuracy | ±0.5 °C |
| Accuracy ± (Temperature) | 0.5 °C |
| ATC | Yes |
| Meter Type | Dissolved Oxygen |
| Temperature Display | Yes |
| Temperature Range | 0 °C - 99 °C |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Battery Life | 100 Hours with Disposable Batteries |
| Dimensions (HxLxW) | 1.5 in x 7.28 in x 1.77 in (38 mm x 185 mm x 45 mm) |
| Number of Buttons | 3 |
| Power | 4 AG13 Batteries (Included) |
| Protection Rating | IP67 |
| Temperature Sensor | 50 KΩ NTC |
| Wrist Strap | Yes |
The ST20D is supplied with the following:
· X3 membrane caps
· Electrolyte solution (to fill membrane cap during installation)
Calibration & Maintenance Guide
