3D Instruments Accu-Cal Platinum Instruction Booklet page 4

OPERATING INSTRUCTIONS
2. Set Auto Off (Default = 30 minutes)
The auto shut-off can be set in 1
minute increments from 1 to 30 min-
utes or "off" (continuous operation).
Use the ▲ and ▼ keys to set the
desired interval. The "off" setting is at
the low end of the choices, below 1
minute. With the auto shut-off off, it will
remain on until manually switched off.
3. Display Battery Voltage
Displays actual voltage of battery
"pack" and a "percent of life" bargraph
indicating battery condition.
4. Display Actual Temperature
A PN junction based temperature sen-
sor is built into the microprocessor,
which is mounted on the PC board. It
can accurately read the temperature
inside the gauge case. The value can
be set to °F or °C using the ▲ and ▼
keys. The factory default value is °C.
5. Set Damping (Default = OFF)
Choices are "on" and "off" set with the
▲ and ▼ keys. Turning damping on will
smooth readings from pulsating pres-
sure sources. The Damping function
averages 10 successive measure-
ments prior to updating the LCD dis-
play and MAX/MIN registers.
6. Set Sample Rate (Default = 10/sec)
This determines how often pressure is
sampled and both the display and
MAX/MIN registers are updated.
Choices are 0.5, 1, 3, and 10 sam-
ples/second with 10/sec being fastest.
7. Set TARE
This function allows you to build in a
constant offset value, which is then
subtracted from the measured pres-
sure. Example: if a TARE is set at 30
PSI and the measured pressure is 37
PSI, the displayed value will be 7 PSI.
A pressure of 27 PSI would be dis-
played as –3 PSI. TARE is settable
across the entire span of the gauge.
KT-099
06/07
Page 4 of 20
The TARE value is set manually with
the ▲ and ▼ keys, and is based on the
engineering units and resolution select-
ed for display. TARE value can be set
to the maximum range of the gauge.
Note: The bar graph will always display
the actual pressure based on the full
range of the gauge regardless of the
TARE setting. This is done for safety to
insure that even with a "0" reading that
pressure is being applied to the gauge.
8. FUnC Lock
Access to each of the settable parame-
ters above can be turned "off" once
set, to prevent unauthorized changes
to configuration. This is accomplished
through a password protected "supervi-
sory mode". This function is accessed
through the Configuration menu - refer
to the next section.
SUPERVISORY MODE
Press the ENTER key when "FUnC LOCK"
is displayed, 0 PWRD will be displayed on
the gauge display. The password to enter
the supervisory mode is 101, set using the
▲ and ▼ keys. Holding a key continuously
will cause the display to advance quicker
for faster setting. Press the ENTER key to
reach the supervisory mode.
Note: The password is factory set and
cannot be changed.
1. The Accu-Cal Platinum is shipped from
the factory with all accessible settings
"unlocked" or available to be changed.
2. In order, the functions that can be
unlocked, locked or accessed are:
• Zero function (enable/disable)
• Set pressure units (enable/disable)
• Auto shutdown adjustment
(enable/disable)
• Damping settings (enable/disable)
• Sample rate setting (enable/disable)
• TARE setting (enable/disable)
• Custom engr. units (set scale factor)