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Industrial Process Controllers & Monitors
 alpha-pH800 1/4 DIN pH/ORP Controller
User-Customization through Advanced Setup Menu offers flexibility in matching the controller's functions to suit individual's specific requirement Automatic Calibration with Auto-Buffer Recognition eliminates mistakes during calibration Symmetrical Mode Operation eliminates electronic noise problems when used with solution ground One-Point Online Calibration without shutting down the line Hold Relay for use with float switches/flow switches and other controllers as a failsafe function 0 to 2000 Second Time Delay Adjustment on control and alarm delays Galvanically Isolated Scaleable 0-20/4-20 mA Outputs for pH/ORP Hysteresis Band Protection against rapid control switching of relays from wear and tear Non-Volatile Memory retains all stored parameters and calibration data even if power fails Large Dual Display shows pH (or ORP) with temperature simultaneously - features clear multiple icons, set points, and status messages Choice of Temperature Sensor Pt100/Pt1000 with 2-wire or 3-wire temperature input selection Easy Installation and Wiring with detachable plug-in connectors
Applications:
General: Useful for any batch or on-line type application that requires accurate pH or ORP control.
Water Purification/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.
Specifications:
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Product Specification
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Description |
| pH Range |
0.00 to 14.00 pH |
| Resolution & Accuracy |
0.01 pH & ±0.01 pH |
| mV Range |
-999 to 1000 mV |
| Resolution & Accuracy |
1/ ±2 mV |
| Temperature Range |
-10 to 110 °C |
| Resolution & Relative Accuracy |
0.1 °C & ±0.5 °C |
| Temperature Sensor |
Pt 100 (3-wire) |
| Temperature Compensation |
Auto / Manual (0°C to 100°C) |
| Set Point and Controller Functions |
| Function |
Limit Control |
| Switching pH/ORP Hysteresis |
0.00 to 2.00 pH or 0 to 100 mV |
| Contact Outputs, Controller |
2 SPDT relays |
| Switching Voltage/ Current/ Power |
Max 250 VAC/ Max 3A/ Max 600 VA |
| Electrical Data and Connections |
| Power Requirement |
85 to 260 VAC, 50/60 Hz or DC |
| Signal Output/ Load |
4-20mA galvanically isolated / 200Ω |
| pH/ORP Input |
BNC (1012 Impedence) |
| Connection Terminals |
3 detachable connectors (3-pin; 7-pin & 9-pin terminal blocks) |
| Main Fuse |
250mA, Anti-surge (BUSSMAN S504 + 250mA) |
| Environmental Conditions |
| Maximum Relative Humidity |
80% up to 31°C decreasing linearly to 50% at 40°C |
| Ambient Temp. Operating Range |
-10 to 50 °C (14 °F to 122°F) |
| Mechanical Specifications
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| Dimensions |
96 x 48 x 150 mm |
| Weights |
300 g (boxed) |
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