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Memory Label Selection
Up to 6 pressure readings can be stored. While in the memory
mode the peak reading is captured.
The six memory locations may be renamed as follows for aircraft
landing gear applications. Each of the memory locations may be
renamed as desired in any sequence. Care should be taken to avoid
duplication or omission of a position.
MEM 1
NLG 1
Nose landing gear tire 1
MEM 2
NLG 2
Nose landing gear tire 2
MEM 3
MLG 1
Main landing gear tire 1
MEM 4
MLG 2
Main landing gear tire 2
MEM 5
MLG 3
Main landing gear tire 3
MEM 6
MLG 4
Main landing gear tire 4
After auto shutoff time selection, the number
1 is displayed on the upper display. The
lower display will indicate the label for
memory 1.
Use the s and t buttons to select MEM
1, NLG 1, NLG 2, MLG 1, MLG 2, MLG 3, or
MLG 4.
When the desired label for memory 1 is
displayed, press and release the Power
button.
Repeat the steps for the other memory
locations.
When the desired label for memory 6 is
displayed, press and release the Power
button to save the user configuration and
restart the gauge.
Using the Memory
With the gauge powered up and in the
normal operating mode, press and release
the Memory button to sequence through the
memory locations.
When the Memory button is pressed the
gauge is in the peak hold mode. A new
higher reading will replace an existing
reading, but a pressure reading lower than
the one displayed will not be saved.
When desired memory location is displayed,
take the pressure reading. The peak
reading will be captured.
Remove the gauge from the pressure
source and press the memory button for the
next location.
Repeat until all readings are taken.
The readings will be saved even if the
gauge is shut off.
Press and release the Power button to
exit the memory mode and return to live
pressure readings.
Clear a Memory Location
Before clearing a memory location, make
sure the gauge has no pressure applied.
Press and hold the Zero/Clear button.
Release the button when clr is displayed.
The reading for the memory location
indicated on the lower display will be
cleared.
With gauge reference models if no pressure
is applied, the gauge will return to zero.
If pressure is applied the new pressure
reading will be stored in memory.
With absolute reference models the current
atmospheric pressure reading will be stored
if the gauge port is open to atmosphere.
Press and release the Power button to
exit the memory mode and return to live
pressure readings.
Calibration Preparation
Gauges are calibrated at the factory using equipment traceable
to NIST. There is no need to calibrate the gauge before putting
it into service. Calibration should only be performed by qualified
individuals using appropriate calibration standards and procedures.
Calibration intervals depend on your quality control program
requirements, although many customers calibrate annually.
The calibration system must be able to generate and measure
pressure/vacuum over the full range of the gauge and should be
at least four times more accurate than the gauge being calibrated.
A vacuum pump able to produce a vacuum of 100 microns (0.1
torr or 100 millitorr) or lower is required for vacuum and absolute
gauges. Warning: application of vacuum to non-vacuum models will
result in damage to the sensor.
Allow the gauge to acclimate to ambient temperature for 20
I
minutes.
Install fresh batteries.
Mem I
Entering Calibration Pass Code
Zero/Clear
Memory
s
t
With the gauge off, press and hold the t
- or -
button. Then press the Power button. Release
all buttons when the display indicates CAL.
I
The display begins by indicating the full-
scale positive pressure rating of the gauge
NLG I
in the engineering units as configured by
the factory, and then shows all display
Zero/Clear
Memory
segments.
s
t
Before the gauge enters the Calibration
Mode, the display initially indicates _ _ _
_ with the first underscore blinking, and
with CALPC (calibration pass code) on the
lower display.
0
0
Enter the 3510 pass code as described in
the Configuration Pass Code section.
PSIG
Zero/Clear
Memory
s
t
Calibration
The gauge enters and remains in the Calibration Mode until
0
0
restarted manually or power is removed. Features not related to
calibration are disabled.
MEM I
The calibration may be performed in any of the available
engineering units as well as percent (PCT).
For greatest accuracy, use the s and t buttons to select
engineering units for calibration with highest resolution (highest
number of display counts).
Press and release the Power button when the appropriate
engineering units are displayed. Suggested units are listed below.
Sensor
2
0
0
0
5 PSI
15 PSI
MEM I
30 PSI
0 . 0
50 PSI
60 PSI
100 PSI
psig
200 PSI
Zero/Clear
Memory
300 PSI
s
t
500 PSI
1000 PSI
2000 PSI
3000 PSI
2
0
0
0
5000 PSI
The display will then indicate the currently applied pressure in the
MEM I
engineering units selected for calibration.
Zero/Clear
Memory
s and t Button Operation
s
t
Each time one of the s or t buttons is pressed and released
quickly, a small change is made to the digitized pressure signal. It
may take more than one of these small changes to result in a single
c
r l
digit change on the display.
To make larger changes, press and hold the appropriate
MEM I
button. After about one second, the display will begin to change
continuously. Release the button to stop. Then make fine
adjustments by pressing and quickly releasing the buttons as
0
0
previously described.
Gauge Reference Pressure Gauges
MEM I
Apply zero pressure by venting the gauge port to atmosphere. The
character display will alternate between ZERO and CAL. Adjust
for a display indication of zero using the s and t buttons.
Apply full-scale pressure. The character display will alternate
between +SPAN and CAL. Adjust for a display indication of full-
scale pressure using the s and t buttons.
Apply 50% full-scale pressure. The character display will alternate
between +MID and CAL. Adjust for a display indication equal to
50% of full-scale pressure using the s and t buttons.
DPG2001B and DPG2004B Series Digital Pressure Gauges
Zero/Clear
s
2
C
A
power up sequence
_
_
CALPC
Suggested units for calibration
5.000 PSI
775.7 MMHG or TORR
61.08 INHG
50.00 PSI
60.00 PSI
7.031 KG/CM2
407.2 INHG
610.8 INHG
3447 KPA
6895 KPA
4613 FTH2O
6920 FTH2O
5000 PSI
Calibration—continued
Gauge Reference Vacuum Gauges
Apply zero pressure by venting the gauge port to atmosphere. The
character display will alternate between ZERO and CAL. Adjust
for a display indication of zero using the s and t buttons.
Apply full-scale vacuum. The character display will alternate
between +SPAN and CAL. Adjust for a display indication of full-
scale vacuum using the s and t buttons.
Apply 50% full-scale vacuum. The character display will alternate
between +MID and CAL. Adjust for a display indication equal to
50% of full-scale vacuum using the s and t buttons.
Absolute Reference Gauges
Apply full vacuum to the gauge. The character display will alternate
between ZERO and CAL. Press the s and t buttons to obtain a
display indication of zero.
Apply full-scale pressure. The character display will alternate
between +SPAN and CAL. Press the s and t buttons to obtain
a display indication equal to full-scale pressure.
Apply 50% of full-scale pressure. The lower display will alternate
between +MID and CAL. Press the s and t buttons to obtain an
indication equal to 50% of full-scale pressure.
Bipolar Gauges
In addition to the steps described above for pressure gauges, apply
Memory
full-scale vacuum. The character display will alternate between
t
-SPAN and CAL. Adjust for a display indication of actual applied
1
hold
vacuum using the s and t buttons.
For bipolar ranges only, apply 50% full-scale vacuum. The
L
character display will alternate between -MID and CAL. Adjust for
a display indication equal to 50% of full-scale vacuum using the s
and t buttons.
Save Calibration
Press and hold the Power button until the display indicates - - - -
then release the button to store the calibration parameters in non-
_
_
volatile memory and restart the gauge.
Verify the pressure indications at 0%, 25%, 50%, 75% and 100%
of full scale.
User-Defined Pass Code Configuration
The factory default pass code 3510 may be changed to a different
value for configuration and/or calibration.
Configuration Pass Code
With the unit off, press and hold the s button to view and/or
change the user configuration pass code. Then press the Power
button. Release all buttons when the display indicates CFG.
Calibration Pass Code
With the unit off, press and hold the t button to view and/or
change the user calibration pass code. Then press the Power
button. Release all buttons when the display indicates CAL.
Change Pass Code Mode
Before the unit enters the view or change pass code mode, the
display initially indicates _ _ _ _ with the first underscore blinking,
and with CFGPC or CALPC on the character segments.
Note: The unit will automatically revert to normal operation if no
buttons are operated for approximately 15 seconds. To cancel and
return to normal operation, press and release the Power button
without entering any pass code characters.
Enter access code 1220:
Use the s and t buttons to set the left-most digit to 1.
Press and release the Power button to index to the next position.
The 1 will remain, and the second position will be blinking.
Use the s and t buttons to select 2.
Press and release the Power button to index to the next position. 1
2 will remain, and the third position will be blinking.
Use the s and t buttons to select 2.
Press and release the Power button to index to the next position. 1
2 2 will remain, and the fourth position will be blinking.
Use the s and t buttons to select 0.
Press and release the Power button to proceed.
Note: If an incorrect access code was entered, the gauge will return
to the start of the access code entry sequence.
Change Pass Code
Once the access code has been entered correctly, the display
will indicate the existing user-defined pass code with CFGPC or
CALPC on the character segments.
Press the s or t button to select the first character of the new pass code.
When the correct first character is being displayed, press and
release the Power button to proceed to the next pass code character.
Repeat above until the entire pass code is complete.
To exit the User Defined Pass Code change mode, press and hold
the Power button.
Release the button when the display indicates - - - - to restart the gauge.
3
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