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Large dual LCD shows pH (or ORP) and temperature simultaneously
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Two set point, two SPDT relay for on/off control
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Symmetrical mode operation eliminates electrical noise
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HOLD feature deactivates relays on contact closure; ideal for float switches or dual controller applications
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0 to 2000 second time delay adjustment on all relays
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Separately adjustable high and low set point hysteresis bands prevent rapid contact switching near set points
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Push button two-point calibration and electrode offset adjustment
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Protected against electromagnetic interference
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LED indicators signal control activities to monitor controller status
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Battery back-up of memory maintains set-up if power fails
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The pH 800 controller provides ±0.01 pH accuracy for reliable, easy-to-use on/off control of your pH and mV process. Two separately programmable relays are ideal for acid feed/base feed applications. Use the isolated 4-20 mA output to send data to your recorder or data acquisition system for hard copy reports.
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Customize your controller to fit your exact application! This unit is selectable for pH or ORP (mV) control and manual or automatic temperature compensation. The 1/4 DIN size fits into standard panel cutouts. IP54 rated front panel keypad is weather resistant. Mounting hardware included.
Click below to download Acrobat (.pdf) file of:
pH 800 controller Product Bulletin
pH 800 Controller Manual
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Measures
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pH, mV, °C
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pH Range
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0.00 to 14.00 pH
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pH Resolution
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0.01 pH
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pH Accuracy
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±0.01 pH
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pH Calibration
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one or two points (select from pH 1.00, 4.01, 6.86, 7.00, 9.00, 9.18, or 10.00)
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mV Range
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±1000 mV
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mV Resolution
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1 mV
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mV Accuracy
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±1 mV
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mV Calibration
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mV offset
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Temperature Range
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-9.9 to 125°C
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Temperature Resolution
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0.1°C
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Temperature Accuracy
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±0.1°C
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Temperature Calibration
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offset up to ±5°C
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Control type
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on/off
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Number of inputs
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one
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Number of set points
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two (high and low)
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Separate alarm relay
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no
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Output Control
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2 SPDT relays, 6 A at 110 VAC, 250 VAC maximum
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Output Current
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isolated 4-20 mA, 600 W maximum load
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Hysteresis
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0.1 to 1.0 pH, 10 to 100 mV, or 1 to 10%
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Relay delay
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selectable, 0 to 2000 seconds
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Input impedance
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10^6 MW
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Electrical isolation
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yes, galvanically
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Temperature Sensor
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100 W or 1000 W Pt RTD
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Temperature Compensation
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Automatic or manual from -9.9 to 125°C
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Password protection
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two level password
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Display
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dual line LCD, 4-digit upper and 3 1/2 digit lower
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Operating Temperature
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-10 to 60°C
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Housing
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1/4 DIN
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Dimensions
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3.8" x 3.8" x 6.9" (9.6 x 9.6 x 17.5 cm)
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Shipping weight
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2.5 lbs (1.2 kg)
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Back to pH Controllers
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