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| Brand | YST (Dalian Yist Instruments) |
|---|---|
| Origin | Liaoning, China |
| Model | YST209B-RP880 |
| Measurement Range | -1999 to +1999 mV |
| Accuracy | ±2 mV @ 25 °C |
| Response Time | ≤10 s (to 90% of final value) |
| Temperature Compensation | Automatic, 0–100 °C |
| Output Signals | Isolated 4–20 mA + RS485 digital interface |
| Sensor IP Rating | IP68 |
| Transmitter IP Rating | IP65 |
| Operating Ambient | 0–60 °C, ≤90% RH (non-condensing, away from strong magnetic fields) |
| Power Supply | 220 V ±10%, 50 Hz |
| Installation Type | Submersible (tank/pipeline) |
| Brand | YST (Dalian Yist) |
|---|---|
| Origin | Liaoning, China |
| Model | YST109B-HP880 |
| Measuring Range | pH 0–14 |
| Accuracy | ±0.1 pH |
| Temperature Compensation | 0–99.9 °C (25 °C reference, automatic) |
| Output Signals | 4–20 mA (2-wire), RS485 (Modbus RTU) |
| Power Supply | 24 VDC (wide-input tolerant) |
| Protection Rating | IP65 |
| Response Time | <30 s |
| Stability | ±0.02 pH/24 h |
| Brand | YST (Dalian Yist) |
|---|---|
| Origin | Liaoning, China |
| Model | YST109B-HP880 |
| pH Range | 0–14 |
| ORP Range | −2000 to +2000 mV |
| pH Accuracy | ±0.02 |
| ORP Accuracy | ±5 mV |
| Temperature Compensation | 0–99.9 °C (reference 25 °C |
| Output Signals | 4–20 mA (2-wire), RS485 (Modbus RTU) |
| Power Supply | 24 VDC (wide-range, solar-compatible) |
| Media Compatibility | Aqueous solutions, weakly corrosive liquids (pH 2–12), suspensions |
| Drift Stability | ±0.02 pH/24 h |
| Enclosure Rating | IP65 |
| Response Time | <30 s |
| ADC Resolution | 24-bit |
| Calibration Modes | Manual & Automatic (single-/two-point) |
| Data Logging | 30-day local history storage |
| Electrode Options | Glass, antimony, or refillable gel-filled pH electrodes |
| Brand | YST (Dalian Yist) |
|---|---|
| Model | YST109B-HP880 |
| Measurement Range | pH 0.00–14.00 |
| Accuracy | ±0.1 pH |
| Resolution | 0.01 pH |
| Temperature Compensation | 0–60 °C (Automatic) |
| Power Supply | DC 12 V |
| Power Consumption | ≤1 W |
| Protection Rating | IP65 |
| Operating Temperature | −10 °C to 50 °C |
| Communication Protocol | RS485 Modbus-RTU |
| Brand | YSTorp (Dalian Yistorp) |
|---|---|
| Origin | Liaoning, China |
| Model | YST209B-RP880 |
| Measuring Range | ORP –1999 to +1999 mV (0.1 mV resolution) |
| Accuracy | ±1 mV (ORP), ±0.5 °C (Temperature, 0–60.0 °C) |
| Automatic Temperature Compensation (ATC) | 0.0–120.0 °C (reference 25 °C) |
| Output | 4–20 mA isolated analog output |
| Power Supply | AC 220 V ±10 %, 50 Hz ±1 Hz |
| Enclosure Rating | IP65 |
| Dimensions | 96 × 96 × 110 mm (panel cutout: 92 × 92 mm) |
| Installation Options | Flow-through, submersible, flanged, pipe-mounted, sidewall-mounted |
| Operating Environment | 0–60 °C ambient, RH <85 % non-condensing |
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