HF scientific MicroTOL Online Turbidimeter - Manual (Page 27)

MICRO TOL (5/10) 21
Rev. 4.8
7.7 Enabling the Security Access
The instrument is equipped with a security access. If this option is turned on, the user is
required to input the access code into the instrument to get to any mode other than AUTO.
The only code is 333. This code may not be changed. See section 4.2 for more
information on this security feature. The security key icon will be visible and flashing on
the display whenever the access option is selected using the
t or u buttons. (On or
OFF).
7.8 Extended Settings
The last few settings are grouped together to prevent them from being adjusted by
accident. To gain access to the extended settings, select On using the
t or u buttons and
press the
↵ button.
7.9 Speed of Response
The speed of response for both displayed and output values of NTU can be adjusted in this
menu. The default setting is 10, however 100 response speeds are available. Although the
displayed number is a relative speed, the approximate response time, in seconds, is the
displayed number multiplied by 5. Select the desired speed of response using the
t and
u buttons. Press the ↵ button to accept it.
To avoid reading air and other anomalies, select the slowest speed (highest number).
Select the fastest response where monitoring of rapid changes is needed.