
产品概述与应用
The Alpha pH 2000D Controller/Transmitter and combination electrode system employs differential pH measurement technology. What’s unique about this system is the differential electrode, which uses a pH glass bulb in place of the conventional reference system, making it more resistant to contamination or fouling in harsh wastewater applications. Replaceable salt bridge and reference solution add lifespan to the electrode when junction clogs.
Wide pH Range - Measures from -2.00 to 16.00 pH with two-decimal accuracy
Dual Mode Operation - ORP mode measures in mV or % concentration, with independent calibration modes
Master-Slave Operation - Control and measure pH and ORP simultaneously by placing two controllers side by side
Flexible Mounting - Wall mount, pipe mount or panel mount options with compact design and universal 1.5” NPT mounting threads
Cost-Effective Maintenance - Soiled salt bridge and buffer reference solution can easily be replaced at a fraction of the cost of a new combination electrode
Built-in Temperature Compensation - Automatic temperature compensation with built-in temperature electrode
Flexible Reference Standards - Use any buffer standard from 2 to 10 pH as a reference, ideal for applications requiring adjustable isopotential points
Enhanced Signal Processing - Built-in electronic amplifier provides low impedance output, allowing analyzers to be located up to 3000 feet away
Noise Reduction - Ground rod minimizes electrical interference from motors, pumps, transformers and ground currents
General: Useful for any batch or on-line type application that requires accurate pH or ORP control.
Water Treatment: Use for batch and on-line control of incoming process water, rinse water treatment, recirculating system and waste water treatment.
Industrial: Ideal for chemical processing, food processing, aquarium, pharmaceutical, hydroponics and waste control industries.
Regulatory: Hook to recorder to document data for regulatory compliance.
技术参数
| 型号/系列 | Thermo Scientific Alpha pH 2000D |
|---|---|
| Range | -2.00 to 16.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.01 pH |
| Range | -1000 to 1000 mV / 0 to 100% |
| Resolution | 1 mV / 0.1% |
| Accuracy | ±1 mV / ±0.2% |
| Range | -10.0 to 110 °C / 14.0 to 230.0 ºF |
| Resolution | 0.1 ºC / 0.1 ºF |
| Accuracy | ±0.5 ºC / ±1.0 ºF |
| Sensor | NTC 300; 2 wire |
| Compensation | Auto/manual (independent process/CAL temperature) |
| Set Points | SP1/SP2: -2.00 to 16.00 pH or -1000 to 1000 mV or 0 to 100% |
| pH Hysteresis | 0.1 to 1 pH |
| ORP Hysteresis | 10 to 100 mV or 1 to 10.0% |
| Control Modes | P/PI control (pulse length/pulse frequency/proportional integral); limit control; off |
| Pulse Length Period | 0.5 to 20 sec |
| Pulse Frequency | 60 to 120 pulse/min |
| Integral Action Time | 0 to 999.9 min |
| Delay | Pickup/Dropout: 0 to 2000 sec |
| Wash Cycle/Duration | 0.1 to 200.0 hr / 1 to 2000 sec |
| Contact Outputs | 1 SPDT, 3 SPST relays |
| Switching Specs | 1/8 HP at 125 VAC (max. 0.74 A / max. 93 VA) 1/8 HP at 250 VAC (max. 0.37 A / max. 93 VA) |
| Mode | Steady or fleet (pulse) |
| Pickup Delay | 0 to 2000 sec |
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