The ST-731 is an inline turbidimeter designed for a wide range of turbidity monitoring in various applications. Each device is configured with a specific scale for NTU detection, ranging from 1–10NTU. This sensor is more robust and tolerant to fouling, rendering alternative turbidity sensors inferior due to particulate and air bubble challenges. The ST-731 also offers desired resolution and accuracy in high turbidity applications commonly using suspended solid meters.
| Item | ST-731 |
| Part Number | 53505 |
| Range | 0-10NTU |
| Resolution | 0.05NTU |
| Accuracy | ±2% of Reading |
| Method | Nephelometric Turbidity Units (NTU) |
| Light Source | White LED |
| Power Supply | 22-26VDC, Power Consumption – 1W |
| Outputs | Isolated 4-20mA Analog Isolated RS-485 Modbus Digital |
| Dimension | 6.8in (172.7mm) L, 1.44in (36.6mm) D |
| Weight | 170g (0.37lbs) |
| Installation | ST-001 Inline Tee with 3/4in FNPT with Union Socket & Thread Adapters |
| Material | UPVC |
| Pressure | 100psi (6.9Bar) |
| Temperature | Operation: 40-120 °F (4-49 °C) Storage: 20-150 °F (-6-66 °C) |
| Cable Length | 1.5m 7-Pin Bulkhead with Adapter 1.5m 7-Pin Flying Lead with Adapter |
| Calibration | Two Point Calibration against Formazin Standard Solutions |
| Rating | IP66 |
| Regulation | CE / RoHS |
| Compliance | US-EPA |
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