	Large dual LCD shows pH (or ORP) and temperature simultaneously
	Two set point, two SPDT relay for on/off control
	Symmetrical mode operation eliminates electrical noise
	HOLD feature deactivates relays on contact closure; ideal for float switches or dual controller applications
	0 to 2000 second time delay adjustment on all relays
	Separately adjustable high and low set point hysteresis bands prevent rapid contact switching near set points
	Push button two-point calibration and electrode offset adjustment
	Protected against electromagnetic interference
	LED indicators signal control activities to monitor controller status
	Battery back-up of memory maintains set-up if power fails

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.

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

Measures	pH, mV, °C
pHRange	0.00 to 14.00 pH
pHResolution	0.01 pH
pHAccuracy	±0.01 pH
pHCalibration	one or two points (select from pH 1.00, 4.01, 6.86, 7.00, 9.00, 9.18, or 10.00)
mVRange	±1000 mV
mVResolution	1 mV
mVAccuracy	±1 mV
mVCalibration	mV offset
TemperatureRange	-9.9 to 125°C
TemperatureResolution	0.1°C
TemperatureAccuracy	±0.1°C
TemperatureCalibration	offset up to ±5°C
Control type	on/off
Number of inputs	one
Number of set points	two (high and low)
Separate alarm relay	no
OutputControl	2 SPDT relays, 6 A at 110 VAC, 250 VAC maximum
OutputCurrent	isolated 4-20 mA, 600 W maximum load
Hysteresis	0.1 to 1.0 pH, 10 to 100 mV, or 1 to 10%
Relay delay	selectable, 0 to 2000 seconds
Input impedance	10^6 MW
Electrical isolation	yes, galvanically
Temperature Sensor	100 W or 1000 W Pt RTD
Temperature Compensation	Automatic or manual from -9.9 to 125°C
Password protection	two level password
Display	dual line LCD, 4-digit upper and 3 1/2 digit lower
Operating Temperature	-10 to 60°C
Housing	1/4 DIN
Dimensions	3.8" x 3.8" x 6.9" (9.6 x 9.6 x 17.5 cm)
Shipping weight	2.5 lbs (1.2 kg)

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