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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
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pH Range
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0.00 to 14.00 pH
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Resolution & Accuracy
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0.01 pH & ±0.01 pH
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mV Range
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-999 to 1000 mV
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Resolution & Accuracy
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1/ ±2 mV
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Temperature Range
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-10 to 110 °C
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Resolution & Relative Accuracy
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0.1 °C & ±0.5 °C
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Temperature Sensor
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Pt 100 (3-wire)
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Temperature Compensation
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Auto / Manual (0°C to 100°C)
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Set Point
and Controller Functions
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Function
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Limit Control
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Switching pH/ORP Hysteresis
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0.00 to 2.00 pH or 0 to 100 mV
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Contact Outputs, Controller
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2 SPDT relays
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Switching Voltage/ Current/ Power
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Max 250 VAC/ Max 3A/ Max 600 VA
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Electrical
Data and Connections
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Power Requirement
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85 to 260 VAC, 50/60 Hz or DC
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Signal Output/ Load
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4-20mA galvanically isolated /
200Ω
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pH/ORP Input
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BNC (1012 Impedence)
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Connection Terminals
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3 detachable connectors (3-pin;
7-pin & 9-pin terminal blocks)
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Main Fuse
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250mA, Anti-surge (BUSSMAN S504
+ 250mA)
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Environmental
Conditions
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Maximum Relative Humidity
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80% up to 31°C decreasing linearly
to 50% at 40°C
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Ambient Temp. Operating Range
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-10 to 50 °C (14 °F to 122°F)
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Mechanical
Specifications
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Dimensions
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96 x 48 x 150 mm
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Weights
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300 g (boxed)
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