2 audit trail for si792 p series transmitters, 3 product models, Section 2.2.2.1 – Hach-Lange SI792 P, SI792x P, SI792x P-FF, SI792x P-PA User Manual User Manual
Page 16: Section 2.2.2.2, Make the t, General information

General information
14
2.2.2.1
Electronic signatures for si792 P series transmitters
Device functions are protected by passcode access, which prevents
unauthorized modification of device settings or manipulation of
measurement results. Passcodes may be used as electronic
signatures. Passcodes can be edited with the passcode editor
(
).
2.2.2.2
Audit trail for si792 P series transmitters
The si792 series can automatically track all changes to the device
settings. Each change is tagged with a Configuration Change flag,
which is documented using HART communication. Altered device
settings or parameters can be retrieved from the transmitter using
HART communication.
2.3 Product models
The si792 P series instruments are programmed at the factory with
default settings for specific sensors and probes. The default settings,
chosen to accommodate regional safety standards, can be changed by
the user.
Parts and accessories on page 87
for a list of instrument models.