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pH Process Controller Model 352


pH Process Controller Model 352
 

Model 352 pH Process Controllers

Product Information

The Model 352 pH Controllers are designed for pH control in process and wastewater systems. It can use several different styles of pH electrodes for different process applications.

These pH 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 590 mV/pH 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 neutralizing amine overfeed.
  • HIGH and LOW setpoints for chemical feed or alarms.
  • Remote mounting of pH sensors with amplifiers.
Benefits
  • Can use a wide range of various pH sensors.
  • Controller can be applied in various process and wastewater pH control systems.
Specifications

Inputs
Power 120 VAC
120/240 VAC w/-F
Sensor Input Requires pH amplifier in sensor assembly
Flow switch Dry contact
Outputs
Relays 3 Amps @ 120 VAC
0-1 mA Non isolated
4-20 mA Isolated, internal power w/-35
Controller
pH Range 0-14 pH
Accuracy ±0.05 pH
Resolution 0.01 pH
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
352   pH ON/OFF controller with High and Low setpoint. 0-14 pH scale. UL Listed. Unit is set up to use a preamp. (No power cord, outlets or sensor.)
NOTE: specify -1 or -2 option when ordering 520 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.

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