HF scientific 19998 Triple Validation Turbidimeter - 0-100 NTU - Manual (Page 10)

TVT 1 (5/02) 4
Rev. 2.6 (.pdf)
Figure 2 illustrates the touch pad. The touch pad has four buttons: MODE,
↵ ↵↵ ↵, t,
and
u. The MODE button is used to cycle between the three operational modes of the
instrument: CAL, SETUP, and AUTO (Measurement) mode. The
↵ ↵↵ ↵
button enters the
option (or mode) that is highlighted or chosen. The
t
and
u
buttons are used to scroll
through lists and to increase or decrease settings.
2.0 Safety
This manual contains basic instructions that you must follow during the commissioning,
operation, care and maintenance of the instrument. The safety protection provided by
this equipment may be impaired if it is commissioned and/or used in a manner not
described in this manual. Consequently, all responsible personnel must read this manual
prior to working with this instrument.
All relay contacts are held at the last valid condition and will not change state while the
instrument is in the calibration and/or in the configuration mode. In addition, in these
modes, the instrument has a time-out feature that automatically returns the system
operation to the normal operation mode from any other mode after a five (5) minute
period of inactivity.
In certain instances NOTES, or helpful hints, have been highlighted to give further
clarification to the instructions. Refer to the Table of Contents to easily find specific
topics and to learn about unfamiliar terms.