ORP Process Controllers Model 353

Model 353 ORP Process Controllers

Product Information

The Model 353 ORP Controllers are designed for ORP control in process and wastewater systems.

These ORP Controllers use the latest technology available in amplifier interface techniques to allow for the widest range of applications with increased sensing accuracy. Sensor amplifiers employ the latest electronics technology to provide drift-free noise-free signal transmission. The amplifier output of 10 mV/ORP Unit is high enough for long-distance transmission without terminal block potential problems, loss of signal strength and noise pick-up.

Features

0-1 mA output for recorder.
Alarm timer limits overfeed.
HIGH and LOW setpoints for chemical feed or alarms.
Remote mounting of ORP sensors with amplifiers.

Benefits

Can use different styles of ORP sensors.
Controller can be applied in various process and wastewater ORP control systems.

Specifications

Inputs
Power		120 VAC
		120/240 VAC w/-F
Sensor Input		Requires amplifier on ORP sensor
Flow switch		Dry contact

Outputs
Relays		3 Amps @ 120 VAC
0-1 mA		Non isolated
4-20 mA		Isolated, internal power w/-35

Controller
ORP Range		0-1,000 mV
Accuracy		±5 mV
Resolution		1 mV
Deadband		Adjustable
Setpoints		HIGH and LOW
Alarm Timer		5-90 minutes. Locks out both HIGH and LOW setpoints.
Ambient Temperature		32-158°F (0-70°C)
Enclosure		ABS Plastic

Ordering Information

353	ORP ON/OFF controller with High and Low setpoint. 0 to +1000 mV range. UL Listed. Unit is set up to use a preamp. (No power cord, outlets or sensor.)
	*NOTE: specify -1 or -2 option when ordering 530 sensor.*
CONTROLLER OPTIONS (optional)
-F	250 VAC 50 Hz power option.
PLUG-IN OUTPUT OPTIONS (optional; select one only)
-35	Isolated 4-20 mA output for remote data acquisition.
-39F	Frequency output contact for electrically pulsed chemical pump. One required for each chemical pump.
-39P	Percent on-time modulating contact: Period, Zero & Span adjust.
-42	HIGH/LOW conductivity dry alarm contacts with adjustable setpoints.
-44	Isolated 4-20 mA output, plus high/low alarms.
ENCLOSURE OPTIONS (optional)
-DU	Duplex outlet for chemical pump, power cord.
MOUNTING OPTIONS
PM	Panel mount 6¼ inch square cutout.
BM	Bracket for pipe mounting.