In the Basic versions an electronic PID controller ensures that the selected temperature is accurately reached and maintained. The multi-functional fuzzy-supported PID control on the Excellent versions guarantees maximum security. Two high-grade platinum sensors are responsible for temperature control and for monitoring temperature and level. Like a climbing team on a rope they communicate with each other and ensure uninterrupted fault-free temperature control; the high-grade 4-wire circuit guarantees uncorrupted transmission of measurements.
The result can readily be seen behind the easy-clean glass window: all essential settings and operating states are clearly displayed.
BASIC version
WNB
EXCELLENT version
WNE/ WPE/ ONE
1. Normal operation
Press the SET key, select the setpoint temperature |
2. Delayed switch-on
Go home in the evening; in the morning the bath is already at temperature.
From 0 to 99:59 hrs (Excellent: 999 hrs) setting accuracy: 1 minute |
3. Programmable hold time
Select to the nearest minute how long the waterbath should hold the temperature.
From 0 to 99:59 hrs (Excellent: 999 hrs) setting accuracy: 1 minute |
4. Visual alarm
If the setpoint temperature is exceeded by more than 10 °C the monitor relay permits emergency operation, indicated visually by the flashing alarm signal. If the factory-set maximum temperature is exceeded the mechanical temperature limiter TB switches off the heating permanently and the alarm symbol is on continuously. |
| 5. Electronic overtemperature protection
Set the monitoring temperature with 0.1 °C accuracy up to 10 °C above nominal temperature. If there should be a fault, you can choose in setup through standard function selection between continuation of the procedure (TWW) or abort (TWB) |
| 6. Level
This flashes on low liquid level. At the same time there is an audible alarm and the heating is switched off automatically. |
| 7. Audible signals
There is a brief beep at programme end and also as input acknow-ledgement. On overtemperature and low liquid level there is an audible signal together with a visual alarm. |
| 8. Circulating pump (WPE45 only)
The circulating pump in the WPE45 optimises the thermal uniformity of the large water volume!. |
| 9. Hold period
Start of hold period only after reaching the setpoint. |
| 10. Recalibration facility
Excellent quality assurance on standardised or documented material tests through +/-5 K recalibration facility on the controller. |
