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Ohaus Pen Meter ST20M-C Portable Electrochemical Meter for pH, Conductivity, and Salinity
Product Description
Ohaus Pen Meter ST20M-C Model #30393200
- Measurement capabilities: Conductivity, pH, Salinity, and Temperature
- Ranges:
- Temperature: 0.0 – 99.0 °C
- pH: 0.00 – 14 pH
- Conductivity: 0.00 – 19.99 mS/cm
- Salinity: 0.0 – 10.0 ppt
- Accuracy:
- pH: ±0.05
- Temperature: ±0.5 °C
- Conductivity: ±2.0 % Full Scale
- Resolution:
- pH: 0.01
- Conductivity: 0.01 mS/cm
- Salinity: 0.1 ppt
- Temperature: 0.1 °C
- Temperature compensation: Automatic Temperature Compensation (ATC) enabled, using 50 KΩ NTC sensor
- Calibration: 3-point calibration for accuracy
- Design: Durable plastic housing with IP67 waterproof rating, protective sensor cap, wrist strap, and automatic shutdown after 6 minutes of inactivity
- Power: Operates with 4 AG13 disposable batteries, providing approximately 100 hours of battery life
- Physical dimensions: 185 mm x 38 mm x 45 mm (L x H x W)
- Weight: 110 g (3.88 oz)
- User interface: 3 buttons for simplified operation
- Operating conditions: Ambient temperature 10°C – 40°C, up to 85% relative humidity, non-condensing environments
- Additional features: Temperature display function and rugged design suitable for field and laboratory use
Item Stats
Product details
| Meter Type | Conductivity; pH; Salinity |
| Measurement Range | 0.0 – 99.0 °C; 0.00 – 14 pH; 0.00 – 19.99 ms/cm; 0.0 – 10.0 ppt |
| Accuracy | ± 0.05 pH / ± 0.5 °C; ±2.0 % F.S. |
| Measurement Resolution | 0.01 pH; 0.01ms/cm; 0.1 ppt; 0.1 °C |
| ATC | Yes |
| Temperature Compensation | Not Applicable |
| Automatic Shutdown | Yes, After 6 minutes of non-use |
| Battery Life | 100 Hours with Disposable Batteries |
| Calibration | 3 Point |
| Conductivity accuracy (±) | 2 % |
| Conductivity measuring range | 0.00 – 19.99 mS/cm |
| Dimensions (LxHxW) | 7.28 in x 1.5 in x 1.77 in (185 mm x 38 mm x 45 mm) |
| Net Weight | 3.88 oz (110 g) |
| Number of Buttons | 3 |
| pH accuracy (±) | 0.05 |
| pH measuring range | 0 |
| Power | 4 AG13 Batteries (Included) |
| Protection Rating | IP67 |
| Temperature Display | Yes |
| Temperature Sensor | 50 KΩ NTC |
| Working Environment | 50°F – 104°F, 85%RH, non-condensing (10°C – 40°C, 85%RH, non-condensing) |
| Wrist Strap | Yes |
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