Analysis Process - Heyl Testomat 808 Manual De Instrucciones

Automatic interval mode can be interrupted via standby and analyses
started manually.
Operating
mode
Standby The instrument is switched on and in standby.
Short press key 3 (pause) to switch standby on/off.
Note: During an interval pause, the instrument
immediately switches to standby; a started analy-
sis is always completed.
Manual Precondition: The instrument is in standby or in an
interval pause.
Short press key 1 (manual) to switch on manual
mode.
An analysis is started immediately, irrespective of
the set interval pause.

Analysis process

The analysis takes approx. 2 minutes. The water analysis process for
determining the residual total hardness is as follows:
Analysis start
 The solenoid valve for water inlet opens
 The measuring chamber is flushed
 The solenoid valve closes after the flush time
 The optical transmitter is switched on to measure possible
turbidity in the water
 The measurement continues until the turbidity clears (the wa-
ter has been fully outgassed)
 The measurement starts when the measured value is con-
stant
 The dosing pump and stirring bar are activated
 The current measured value is read
 The colour change in the measuring chamber is evaluated
 If necessary, switch relay, result is displayed
 The measuring chamber is flushed
Analysis end
Instrument settings and analysis
Function/Process
31