Garnet SeeLevel II 900-D4D DUAL, Руководство пользователя, Страница: 10 / 24

Page 10 900D4D Manual
T
he keypad consists of the 16 buttons on the front of the display,
and is used for the following functions:
1. To show inches, alarm status, and battery condition as
described in the previous chapter.
2. To turn on the backlight.
3.
To turn the gauge display on or off.
4. To select Fahrenheit or Celsius for the temperature display.
5.
To program the 4-20 mA outputs on/off or to set the volume
4-20 mA calibration scale factor.
6. To set the alarm points.
7.
To set the gauge offset (the zero point).
8. To enter a linear calibration factor for the volume display.
9. To enter a point by point calibration table for the volume
display.
10. To allow the memory to be copied or programmed remotely.
11. To enter the 4 digit short user code which permits access to
functions 3 and 4 only.
12. To enter the 6 digit long user code which permits access to
functions 5 and 6 only.
13. To enter the 8 digit master code which permits authorized
personnel to set the user codes and to access functions 7 to
10.
Since the operation of the gauge can be severely compromised by
improper keypad use, there are security features incorporated into
the gauge. These security features also allow the owner of the
tank to better manage rentals and billing by being able to control
access to the gauge functions. For example, the gauge can be
shut off, or only the visual display functions can be turned on.
There are three levels of security, as indicated by three different
access codes:
1. Short User Code: this is a four digit code used by the customer
to turn the gauge on and off and to select Fahrenheit or Celsius
temperature readouts only. This can be used when a customer
rents a tank with the gauge turned off, and later decides to
use the gauge, but without any remote communications or
alarms. The customer can be told the code over the phone
CHAPTER 3 - KEYPAD OPERATING INSTRUCTIONS