ETC8420 е програмируем цифров термостат с входове за термодвойки(J,K,T,S,R) или pt100. 2x4 цифров дисплей за моментната и настроената стойност с обхват до 1600С с хистерезис 1...50С.Един SSR и 2 релейни изхода за On/Off, P, PI, PD, PID функции.С помощта на Self Tune автоматична настройка на най -добрите PID параметри.Има възможност за добавяне на RS 485 модул, който служи за комуникация чрез Modbus RTU протокол.Защен параметър за оторизиран достъп до настройките Display & Keyboard | Process Value Display (PV) | 4 digits, 9.1 mm, 7 segment red LED |
| Set value display (SV) | 4 digits, 12.5 mm, 7 segment yellow LED |
| Mounting method | Suitable for flush-panel mounting |
| Weight | Approx. 400g (after packing) |
| Electrical Characteristics |
| Supply |  230Vac +%10 -%20, 50/60Hz
24Vac ±%10, 50/60Hz
9-30Vdc / 7-24Vac ±%10 SMPS module |
| Connection | 2.5 mm2 screw-terminal connections |
| Entry | Selectable multi input (thermocouple or Pt100) |
| Scale | Fe-Const (J) thermocouple : 0...600 C NiCr-Ni (K) thermocouple : 0...1200C Cu-Const (T) thermocouple : 0...400C Ptt10Rh-Pt (S) thermocouple : 0...1600C Pt13Rh-Pt (R) thermocouple : 0...1600 Pt100 resistance thermometer : -200...600C Pt100 resistance thermometer : -99.9...300.0C |
| Accuracy | ±0.2% full scale ±1 digit |
| Operation Temperature °C | 0...50 °C |
| Data Retention | EEPROM (minimum 10 years) |
| Control Output | 12Vdc 20mA logic out |
| Alarm 1 Output | 1 relay: 250Vac, 2A (resistive load),NO/NC (select program) |
| Control Algorithm | On-Off, P, PI, PD, PID (select program) |
| Proportional Band | Adjustable between 0% and 100% |
| Integral Time | Adjustable 0.0 and 100.0 min |
| Derivative Time | Adjustable 0.00 and 25.00 min |
| Control Period | Adjustable between 4 and 250s |
| Hysteresis | Adjustable between 1 and 50C/F |
| Output Power | The ratio of power at a set point can be adjusted between 0% and 100% |
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