|
Model 330 ORP Cooling Tower Controllers
Product Information
The Model 330 allows you to control ORP levels in your cooling tower. This model features an alarm timer
which prevents excessive chemical feed and a flowswitch which prevents chemical feed if there is no sample flow. For cooling tower applications only. Includes plumbing.
Specifications
|
Inputs
|
|
|
|
Power
|
|
120 VAC
|
|
120/240 VAC
|
|
w/-WP
|
|
Sensor ORP
|
|
Combination glass electrode in PVC housing.
|
|
Flow switch
|
|
Dry contact
|
|
Outputs
|
|
|
|
Relays
|
|
3 Amps @ 120 VAC
|
|
0-1 mA
|
|
non isolated
|
|
4-20 mA isolated,
|
|
internal power w/-35
|
|
Plumbing
|
|
|
|
Pressure
|
|
140 psi (9.7 bar) 100°F (38°C)
|
|
Max. Temp.
|
|
140°F (60°C)
|
|
Min. Flow
|
|
1 gpm (3.8 Lpm)
|
|
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 Rating
|
|
ABS Plastic
|
|
|
|
NEMA 4X Optional
|
Ordering information
|
330
|
|
ORP controller for direct and reverse feed setpoints, 0-1,000 mV range, a feed limit timer with
push button reset, flowswitch, sensor, power cord, outlets and a digital display.
|
|
|
|
ENCLOSURE OPTIONS (optional)
|
|
-WP
|
|
Watertight enclosure with 120/240 VAC 50/60 Hz power switch. ½ inch conduit knockouts. No outlets or power cord.
|
|
|
|
PLUG-IN 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 alarm contacts with adjustable setpoints.
|
|
-44
|
|
Isolated 4-20 mA output plus High/ Low alarms.
|
|
