testo 175-S1 data logger is a safe and reliable AC current, DC current and voltage data logger. It can measure voltage, current, frequency, active power, reactive power, power factor, active energy, reactive energy and total energy.
This simple user manual describes the functions of the display LEDs and buttons, explains the waiting, start, and recording modes, and gives guidance on safe use of the data logger. It also points out that the full manual and software are required for programming and detailed operation.
The device is intended for testing currents (0‑20 mA) and voltages (0‑10 V) in laboratory, automation, and technical system applications. Safety instructions emphasize using the logger only within its rated parameters and handling the battery and probes carefully. This manual is written in Chinese.
| Voltage measurement range | 0 ~ 10 V |
|---|---|
| Accuracy (0‑1 V) | ±2 mV |
| Accuracy (0‑10 V) | ±20 mV |
| Test rate | 0.1 s ~ 24 h (selectable) |
| Memory capacity | 16 000 readings |
| Operating temperature | -10 ~ +50 °C |
| Storage temperature | -40 ~ 470 °C |
The red warning LED flashes three times every 15 seconds.
Long‑press the G9 key for about 3 seconds; the green LED flashes five times.
The device should be operated between –10 °C and +50 °C.