	Large dual LCD shows both pH (or mV) and temperature
	Two set point, two SPDT relay operation- choose from lo/lo, lo/hi, hi/lo or hi/hi control
	Separate alarm relay
	0 to 2000 second time delay adjustment on all relays
	Separately adjustable high and low set point hysteresis bands
	0-20/4-20 mA transmitter/recorder output
	Push button two-point calibration
	On-line electrode offset adjustment
	Hold feature lets you connect flow or level switches to protect your pump
	Two level password protection
	LED indicators signal control activities
	Battery back-up of memory

OAKTON is proud to present our highly versatile 1000 series pH/ORP controller. Select from three control types. Use on/off control to shut off your pump or valve when your process passes its set points. Use pulse frequency or pulse length proportional control to gradually increase or decrease your pump’s or valve’s response, depending on the amount by which your process has passed the set point.

Customize your controller to fit your exact application! This unit is selectable for pH or ORP (as mV or percent) control; 0-20 or 4-20 mA scaleable, isolated recorder output; normally open or closed relays; and manual or automatic temperature compensation. Controller also features a safety Hold function, manual override of the relays, and resistance to electrical signal input noise.

Click below to download Acrobat (.pdf) file of:
pH 1000 controller product bulletin
pH 1000 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, 4.00, 7.00, 9.00, 10.00)
mVRange	±1000 mV
mVResolution	1 mV
mVAccuracy	±1 mV
mVCalibration	offset for ORP mV calibration, or two points (20% and 80%) for ORP % calibration
TemperatureRange	-9.9 to 125°C
TemperatureResolution	0.1°C
TemperatureAccuracy	±0.1°C
TemperatureCalibration	offset up to ±5°C
Control type	on/off or proportional (selectable)
Number of inputs	one
Number of set points	two (high and low)
Separate alarm relay	yes
OutputControl	2 SPDT relays, 6 A at 110 VAC, 250 VAC maximum
OutputAlarm	1 SPDT relay, 6 A at 110 VAC, 250 VAC maximum
OutputPulse	pulse length (0.5 to 20 sec) or pulse frequency (60 to 120 pulses per min)
OutputCurrent	isolated 0-20.4-20 mA, with 20% to 100% full-scale scalable boundaries, 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	10^12 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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