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Cooling Tower Controller Model 330 ORP
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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 |
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| Power |
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120 VAC |
| 120/240 VAC |
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w/-WP |
| Sensor ORP |
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Combination glass electrode in PVC housing. |
| Flow switch |
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Dry contact |
| Outputs |
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| Relays |
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3 Amps @ 120 VAC |
| 0-1 mA |
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non isolated |
| 4-20 mA isolated, |
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internal power w/-35 |
| Plumbing |
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| Pressure |
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140 psi (9.7 bar) 100°F (38°C) |
| Max. Temp. |
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140°F (60°C) |
| Min. Flow |
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1 gpm (3.8 Lpm) |
| Controller |
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| ORP Range |
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0-1,000 mV |
| Accuracy |
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±5 mV |
| Resolution |
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1 mV |
| Deadband |
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Adjustable |
| Setpoints |
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HIGH and LOW |
| Alarm |
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Timer 5-90 minutes. Locks out both HIGH and LOW setpoints. |
| Ambient Temperature |
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32-158°F (0-70°C) |
| Enclosure Rating |
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ABS Plastic |
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NEMA 4X Optional |
Ordering information
| 330 |
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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 |
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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 |
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Isolated 4-20 mA output for remote data acquisition. |
| -39F |
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Frequency output contact for electronically pulsed chemical pump. |
| -39P |
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Percent on-time modulating contact for solenoid chemical feed systems. |
| -42 |
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HIGH/LOW alarm contacts with adjustable setpoints. |
| -44 |
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Isolated 4-20 mA output plus High/ Low alarms. |
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