Shanghai Guyu Environmental Technology Co., Ltd.'s AV38 is a digital type general controller that can automatically identify sensors and provide calibration, configuration, and diagnosis functions. AquaClear is a low-range turbidity meter that meets or exceeds USEPA180.1 standards. Its unique flow pool can effectively remove bubbles from water samples, eliminating the most important interference in low-range measurements, and the system is easy to calibrate, clean and maintain.
The AV38 is a digital general controller for the DataStick™ sensor system. It can automatically recognize up to 247 Datastick sensors, provides calibration, configuration and diagnostic functions, and supports plug‑and‑play sensor connections without additional input modules. The controller can be mounted on a DIN rail or wall and offers a high‑contrast back‑lit LCD, NEMA 4X protection, and power options of 24 VDC or 100‑240 VAC.
The AquaClear low‑range turbidity meter complies with USEPA 180.1, featuring a compact flow cell that removes bubbles for accurate measurements. It measures turbidity from 0 to 200 NTU with 0.001 NTU resolution, temperature from –5 °C to 50 °C, and supports flow rates of 250‑750 mL/min. The unit is designed for easy cleaning, maintenance, and installation in a 300 × 300 mm footprint. This manual is written in Chinese.
| Maximum sensor connections | 247 Datastick sensors |
|---|---|
| Power supply | 24VDC or 100‑240VAC |
| Protection rating | NEMA 4X |
| Current outputs | Maximum 2 channels |
| Relay outputs | Maximum 2 channels |
| Supported communication protocols | Modbus, DeviceNet, EtherNet, RS‑232/RS‑485, DF1, Profibus DP |
| Installation size (controller) | 1/4‑DIN or 1/2‑DIN |
| Measurement range (turbidity) | 0–200 NTU |
| Resolution (turbidity) | 0.001 NTU |
| Accuracy (turbidity) | ±2 % (<40 NTU) / ±5 % (>40 NTU) |
| Flow rate range | 250–750 mL/min |
| Operating temperature range | -20 °C to 60 °C |
| Inlet/outlet size | 3/8" ID soft hose or 1/4" NPT hard pipe |
| Installation dimensions (turbidity meter) | 300 × 300 mm |
The AV38 can connect up to 247 Datastick sensors simultaneously.
It supports Modbus, DeviceNet, EtherNet, RS‑232/RS‑485, DF1 and Profibus DP.
The turbidity meter measures from 0 to 200 NTU.
It can be powered by either 24 VDC or 100‑240 VAC.