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pH Condensate Controller Model 350S


pH Condensate Controller Model 350S
 
Product Information

The Model 350S pH Condensate Controller installed at critical condensate return points or in the de-aerator condensate return line allows you to determine the condensate pH and ensure the efficient management of your system. Monitoring boiler steam condensate allows you to detect corrosion due to process contamination that affects pH. Alarm contacts can be wired to divert the flow of the condensate or activate an alarm when necessary.

The rugged sensor assembly consists of a 316SS ball valve with a stainless steel body. These sensors can be adjusted and even removed without shutting down the condensate return line. They can withstand process temperatures and pressures normally associated with steam line condensate.

These controllers use the latest technology available in pH electrode construction and 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
  • Model 520-2-7R-18-HT pH electrode suitable for high temperatures.
  • Retractable sensor minimizes service interruptions.
  • Alarm timer limits neutralizing amine overfeed.
  • HIGH and LOW setpoints for alarms or to divert condensate.
  • Control of condensate pH and corrosion potential.
Benefits
  • Maximum efficiency of condensate corrosion and inhibitor feed.
  • Diversion of contaminated condensate from the boiler in order to provide greater protection.
  • Helps prevent costly damage of your boiler system, piping and related metal surfaces.
Specifications

Inputs
Power 120 VAC
120/240VAC w/-WP
Sensor pH Combination glass electrode in 316SS body.
Flow switch Dry contact
Outputs
Relays 3 Amps @ 120 VAC
0-1 mA Non isolated
4-20 mA Isolated, internal
power w/-35
pH SENSOR ASSEMBLY (520-2-7R-18-HT)
Pressure 70 psi (4.8 bar)
Temperature -5 to 260°F (-20 to 130°C)
Auto Temp. Comp. 10K Ohms, 32 to 212°F (0 to 100°C)
Sensor Materials Glass, 316 SS, Viton
Sensor Removal Retractable with 1 inch 316 SS ball valve connection.
Min. Cond. for Operation 5 µS
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

350S   Condensate pH analyzer 0-14 pH. UL Listed. Includes retractable 316SS High Temp. Sensor 520-2-7R-18-HT. Max. 260°F (130°C) @ 150 psi (10.2 bar). No power cord or outlets.
 
SYSTEM OPTIONS (optional, select one or more)
AV   Audible and visible alarm with "PUSH TO SILENCE" push button.
-F   250 VAC 50 Hz power option.
 
CONTROLLER OUTPUT OPTIONS (optional, select one only)
-35   Isolated 4-20 mA output for remote data acquisition.
-39F   Frequency output contact for electronically pulsed chemical pump.
-39P   Percent on time modulating contact for solenoid chemical feed systems.
-42   HIGH/LOW 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 6 ¼ inch square cutout.
BM   Bracket for pipe mounting.
 
MOTORIZED BALL AND DIVERTING VALVE OPTIONS
MBV1   Motorized ½ inch blowdown valve, with 1036 actuator; rated to 250 psi @ 400°F (17.2 bar @ 204°C).
MBV2   Motorized ¾ inch blowdown valve, with 1036 actuator; rated to 250 psi @ 400°F (17.2 bar @ 204°C).
MBV3   High pressure motorized ½ inch blowdown valve, with 1275 actuator; rated to 600 psi @ 550°F (41.4 bar @ 288°C).
MBV4   High pressure motorized ¾ inch blowdown valve, with 1275 actuator; rated to 600 psi @ 550°F (41.4 bar @ 288°C).
DV3/4   3-way full port motorized ball valve with actuator for ¾ inch. Temperature rating and psi are inversely proportional (200-800 psi è 350°F-125°F).
DV1   3-way full port motorized ball valve with actuator for 1 inch. Temperature rating and psi are inversely proportional (200-800 psi è 350°F-125°F).

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