The Benetech GT770 is a split-type 3-in-1 meter for solution pH, temperature and mV: pH 0.00-14.00 (0.01, ±0.05), 0-60 °C (0.1 °C, ±1.0 °C) and -500 to 500 mV (1 mV, ±3%), with temperature compensation, 8 MB data memory, PC data transfer and a USB-charged lithium battery.
The Benetech GT770 is a split-type three-in-one tester: a handheld main unit with a separate probe that measures solution pH, solution temperature and sensor voltage (mV). pH is read from 0.00 to 14.00 with 0.01 resolution and ±0.05 accuracy, temperature from 0 to 60 °C (32 to 140 °F) with 0.1 °C resolution and ±1.0 °C accuracy, and voltage from -500 to 500 mV with 1 mV resolution and ±3% accuracy. Solution temperature compensation covers 0 to 60 °C.
Readings can be recorded automatically or manually at an adjustable sampling interval and kept in 8 MB of internal memory (about 397,000 records), where they can be viewed, deleted or turned into reports. Connected to a PC, the meter transfers data to the PC software, generates CSV and BMP files compatible with Windows and can also serve as a small-capacity USB storage drive for other files.
The meter runs on a built-in 3.7 V 1000 mAh lithium battery charged over USB, with a 4-level battery indicator and automatic shutdown below 3.3 V. The display shows OL. when a reading exceeds the range, NC. when the probe is not connected or the signal is lost, and ATC while temperature compensation is active; for solutions whose pH is not affected by temperature, ATC can be cancelled with a short press of the ENTER key.
| Manufacturer | Benetech |
|---|---|
| Model | GT770 |
| pH Measuring Range | 0.00 ~ 14.00 pH |
| pH Resolution | 0.01 pH |
| pH Accuracy | ±0.05 pH |
| Temperature Measuring Range | 0 ~ 60 °C (32 ~ 140 °F) |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±1.0 °C |
| Voltage (mV) Measuring Range | -500 ~ 500 mV |
| Voltage Resolution | 1 mV |
| Voltage Accuracy | ±3% |
| Temperature Compensation Range | 0 ~ 60 °C (32 ~ 140 °F) |
| Calibration Buffers | [4.00]-[6.86]-[9.18] or [4.00]-[7.00]-[10.00] |
| Data Memory | 8 MB (approx. 397,000 records) |
| Data Output | PC software; CSV and BMP files; USB storage drive |
| Operating Environment | 0 ~ 50 °C (32 ~ 122 °F), ≤85 %RH |
| Battery | 3.7 V 1000 mAh lithium battery |
| Low Battery Indication | 4-level battery indicator; automatic shutdown below 3.3 V |
| Charging Adapter | 5 V / 2 A |
| Interface Language | Chinese / English |
| Dimensions (Main Unit) | 160 × 65.35 × 35 mm |
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