70 CT SERIES
MULTIPARAMETRIC CONTROLLER FOR COOLING TOWERS
Water-treatment professionals choose Chemitec’s 70CT Series controller for the monitoring and management of as many as eight parameters in cooling or evaporative towers where precision and repeatability are essential.
The system’s intelligent design and user-friendly interface simplifies measurement calibration and setting of dosing parameters. Meanwhile, in the absence of flow, a dedicated digital input immediately stops dosing and sends a signal via an alarm relay.
FEATURES
- 7" RGB 800x480 colour display
- Displays up to 8 measurements simultaneously
- Readings saved in internal data logger
- Stored data downloadable via integrated Wi-Fi module or USB.
- Up to 8 mA outputs available for proportional dosing
- Modbus RS485 serial protocol
- 8 relays
MEASURES
- Conductivity (digital sensor)
- Conductivity
- ORP
- pH
- Temperature
- Analogue input (4-20 mA) freely programmable
TECHNICAL SPECIFICATION
| Feature | DESCRIPTIOn |
|---|---|
| Display | 7" TFT LCD graphic colour display 800x480 RGB with resistive touch 16:9 |
| Languages | Italian, English, French, German, Spanish |
| Data Logger | Internal Flash 64Mbit. Download by USB port or Wi-Fi |
| Recording Method | Circular (F.I.F.O.) or filling |
| Display of Stored Data | In tabular and graphical form with indication of maximum, minimum, and average values of the period recorded; Zoom function |
| PID Control | Settable functions: P [Proportional]; PI [Proportional – Integral]; PID [Proportional – Integral – Derivative] |
| Activation | On analogue or digital output |
| Proportional Range | 0...500% |
| Time Integral and/or Derivative | 0:00...5:00 min |
| Analogue Outputs | Eight programmable; 0/4...20 mA; galvanic separation; opto-isolator 1KV; maximum load 500 Ohm; freely programmable output limits within the measuring ranges |
| Digital Outputs | Eight freely programmable; 1A 230V ON-OFF or PWM function |
| Alarm Output | NAMUR; 3.6 mA [with range 4...20 mA] |
| Alarm/Wash | Two alarms: instrument fault, minimum/maximum value, delay set point delay (live check); Washing: programming of interval (minimum 15 minutes) and duration from 00:00...24:00 hh:mm |
| Digital Inputs | Two for dosage disabling or washing cycle activation |
| Input Voltage | 24 Vdc/ac |
| Absorption | 10mA max |
| Serial Outputs/Ports | Programmable RS485 for setup and remote real-time data or stored data download |
| Baud Rate | 1200...38400 |
| Manual Commands | Simulation of all analogue and digital outputs via keyboard |
| Power Supply | 90 - 240 Vac/dc 47 - 63 Hz |
| Transformer Isolation | 4 kV |
| Power Consumption | ≤ 20W |
| Electrical Protection | EMI/RFI CEI-EN55011 - 05/99 |
| Mounting | Wall |
| Container | Red ABS |
| Dimensions (WxHxD) | 250x160x116 mm |
| Mechanical Protection | IP66 |
| Weight | 1 kg |
| Operating Temperature | 0...50°C |
| Humidity | 10...95% non-condensing |
| Storage and Transport | -25...65°C |