Testomat 808 - External Flushing; Flush Process - Internal;External in Manual Mode; Further Basic Functions and Settings; Internal Flushing

Further basic functions and settings
30
Further basic functions and set-
tings
Internal flushing
To ensure that the analysed sample represents the current value, the
sampling line must be sufficiently flushed.
Duration of the internal flush time
 The duration of the internal flush time is preset (10 s before and
after a measurement) and cannot be influenced by the operator.
The quantity of flush water for internal flushing depends on the pres-
sure:
Pressure
Max. water quantity
per analysis
1 bar
80 ml
2 bar
120 ml
3 bar
160 ml
External flushing
If a very long (approx. 3 – 10 metres) sampling line or a line with a
large diameter is used, install an external flush valve upstream of
Testomat
®
808. Connect the external flush valve to the "Relay 1"
outlet.
Flush process – internal/external in manual mode
Proceed as follows to additionally flush the instrument:
 At first switch the instrument into standby mode for flushing. Short
press key 3 (standby) to achieve this.
 If a measurement is running, wait until the measurement has been
completed.
Internal flush process:
 Short press key 2 (Flush) to open the internal flush valve.
The valve opens and the measuring chamber is flushed.
The LED above key 2 (Flush) flashes as long as the internal flush
valve is activated.
 Short press key 2 (Flush) again to terminate the flush process.
NOTE