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- Calibration function
- HOLD function
- Automatic Temperature Compensation(ATC) function
- Sensor sensitivity display function
- Calibration, HOLD, Auto power-off function
- Stable display function
- Waterproof property : JIS C 0920 IPX5, (operatable with wet hands)
- Replaceable sensors
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| Model | SK-660PH | SK-661PH | SK-662PH |
| Measuring range | pH 2.0 to12.0pH Temp. 0.0 to 50.0°C |
pH 0.0 to 14.0pH Temp. 0.0 to 50.0 °C |
pH 0.00 to 14.00pH Temp. 0.0 to 50.0 °C |
| Measuring accuracy | pH ±0.6pH Temp. ±1.0°C |
pH ±0.2pH Temp. ±1.0°C |
pH ±0.01pH Temp. ±0.5°C |
| Resolution | pH 0.1pH, Temp. 0.1°C | pH 0.1pH, Temp. 0.1°C | pH 0.01 Temp. 0.1°C |
| Waterproof property | JIS 0920 equivalent to IPX5 | ||
| Functions | Calibration, HOLD (Display hold). Auto power-off, Automatic Temperature Compensation (ATC), Sensor sensitivity display, Stability display. | ||
| Sensor | Glass electrode (Inner solution(KCI): not replaceable) | ||
| Power Requirement | Button cell battery:LR44(GPS 76E)x 4. | ||
| Materials | Display: ABS resin Sensor: glass | ||
| Dimensions | (φ)38x(L)171mm | ||
| Weight | Approx. 82g (including batteries) | ||
| Accessories | Button cell battery:LR44(GPS 76E)x 4, Wrist strap x 1 | ||
| Consumable | Replaceable sensor No. 6431-00 model 660S | ||