LEDs will blink to indicate unacknowledged alarm conditions.
Alarms may be configured to be automatically acknowledged
when the alarm condition clears or configured to be manually
acknowledged by pressing the
TEST
button.
Displaying Trip and Reset Points
The applied pressure, the SET trip points, and the RESET trip
points may be selected for display as follows.
While the applied pressure is being displayed, press and release
the
SEL
button. The upper display will indicate the value of set
point 1 with
SET_1
on the lower display.
While set point 1 is being displayed, press and release the
SEL
button. The upper display will indicate the value of reset point 1
with
RST_1
on the lower display.
While reset point 1 is being displayed, press and release the
SEL button. The upper display will indicate the value of set point
2 with
SET_2
on the lower display.
While set point 2 is being displayed, press and release the
SEL
button. The upper display will indicate the value of reset point 2
with
RST_2
on the lower display.
While the reset point 2 is being displayed, press and release the
SEL
button. The upper display will indicate the applied pressure
and engineering units.
Adjusting Trip and Reset Points, Adjustable
Hysteresis Mode
From the normal operating mode press the SEL button to dis-
play the desired trip point (SET_1, RST_1, SET_2, or RST_2).
Press and hold the TEST button and press the SEL button.
Release both buttons when the display indicates – – – – .
If pass code protection is enabled, before the unit enters the
Set Point Adjust Mode, the display initially indicates _ _ _ _
with the left-most underscore blinking, and with TSTPC on the
lower display.
Enter the pass code as described in the Pass Code Entry sec-
tion.
While in the Trip Point Adjust mode with no buttons pressed,
the display will indicate the trip point value with its designator
(SET_1, RST_1, SET_2, or RST_2) blinking at a slow rate.
To adjust the displayed trip point value, press and hold the TEST
button. The display will continue to indicate the trip point value.
Operate the
s
and
t
buttons to adjust the trip point to the
desired value. The trip point value is stored when the TEST
button is released. Note: The relays and indicators will not
correspond to the applied pressure value until the TEST button
is released.
To exit the Trip Point Adjust mode and return to the normal
operating mode, press and release the SEL button.
Zero Tare Mode
If the gauge is not indicating zero with zero pressure applied
but is within approximately 3% of full scale pressure of zero,
you may tare the gauge to zero. This feature may be enabled
or disabled. Absolute ranges are configured with this feature
turned off.
From the normal operating mode with the gauge port open to
atmosphere, press and hold both the s and t buttons and press
the
SEL
button. The relay outputs and the retransmission output
will hold the last value, and the visual indicators will be deacti-
vated. Release all buttons when the display indicates
o o o o
.
The display will indicate a newly calculated zero tare value with
Z OFF
on the lower display. Note: If not within approximately
3% of zero,
Err0
will be displayed. Press the
SEL
button
to cancel the operation and return to normal operating mode
without affecting any existing zero tare value.
To cancel and remove any existing zero tare value, press and
release the t button. The display will indicate zero. To restore
the newly calculated zero tare value, press and release the
s
button.
To exit the Zero/Tare mode, press and release the
SEL
button.
The gauge will return to normal operation.
Output Test Mode
From the normal operating mode, press and hold the
TEST
but-
ton and press the
SEL
button. Release both buttons when the
display indicates – – – – or _ _ _ _.
If pass code protection is enabled, the display indicates _ _ _ _
with the left-most underscore blinking, and
TSTPC
.
Enter the pass code as described in the Pass Code Entry sec-
tion.
While in the Test mode with no buttons pressed, the display
will indicate the pressure with the engineering units blinking
at a slow rate.
When the
TEST
button is pressed, the LED indicators and the
relays will toggle to their opposite states.
Pressing the
s
or the
t
button while holding the
TEST
button
will raise or lower the test value. Note that the gauge will not
respond to changes in applied pressure while the
TEST
button
is held.
When the
TEST
button is released, the display, the LED indi-
cators, and the relay outputs will correspond to the applied
pressure.
Press and release the
SEL
button to exit the Output Test mode
and return to normal operation.
Calibration Preparation
The gauge is calibrated at the factory using equipment trace-
able to NIST. There is no need to calibrate the gauge before
putting it in service. Calibration should only be performed by
qualified individuals using appropriate calibration standards
and procedures.
The calibration equipment should be at least four times more
accurate than the gauge being calibrated. The calibration sys-
tem must be able to generate and measure pressure/vacuum
over the full range of the gauge. 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.
Allow the gauge to equalize to normal room temperature (about
20 minutes minimum) before calibration.
Calibration
To enter the calibration mode from the normal operating mode
with applied pressure being displayed, press and hold the
TEST
and the
t
buttons. Then press the
SEL
button. Release all but-
tons when the display indicates
CAL
.
When the gauge enters the calibration mode, the display initially
indicates _ _ _ _ with the first underscore blinking, and with
CALPC
on the lower display.
Enter the pass code as described in the Pass Code Entry sec-
tion.
Upon successful calibration pass code entry, the upper display
will indicate the applied pressure in the configured engineer-
ing units.
The lower display of the display will alternate between
CAL
and the calibration region corresponding to the applied pressure
(
ZERO
,
+MID
,
+SPAN
,
MID
, or
SPAN
).
Note: To store the calibration parameters and exit calibration
mode at any time, press and hold the
SEL
button until the
display indicates – – – – .
The pressure calibration procedure adjusts the display indica-
tion to correspond to the actual applied pressure.
If the applied pressure is not being displayed, press and release
the
SEL
button to step to the pressure calibration sequence,
indicated by CAL on the display.
Note: If the
SEL
button is held depressed for longer than 2 sec-
onds, the display will change to indicate – – – – , and the gauge
will exit the calibration mode when all buttons are released.
Zero calibration:
Apply zero pressure. The lower display will
alternate between
CAL
and
ZERO
. Use the
s
and
t
buttons
to adjust the upper display to indicate zero.
Span calibration:
Apply full-scale pressure. The lower display
will alternate between
CAL
and
+SPAN
. Use the
s
and
t
buttons to adjust the upper display to indicate the applied
pressure value.
Midpoint Non-Linearity calibration:
Apply 50% full-scale posi-
tive pressure. The lower display will alternate between
CAL
and
+MID
. Use the
s
and
t
buttons to adjust the upper
display to indicate the applied pressure value.
Negative Span calibration (bipolar and compound ranges
only):
Apply full-scale negative pressure. The lower display
will alternate between
CAL
and
SPAN
. Use the
s
and
t
buttons to adjust the upper display to indicate the applied
pressure value.
Negative Midpoint Non-Linearity calibration (bipolar ranges
only):
Apply 50% full-scale negative pressure. The lower
display will alternate between
CAL
and
MID
. Use the
s
and
t
buttons to adjust the upper display to indicate the applied
pressure value.
To store the calibration parameters and exit calibration mode,
press and hold the
SEL
button until the display indicates – –
– – .
Configuration Pass Code
From the normal operating mode, press and hold the
TEST
and
the
s
buttons. Then press the
SEL
button. Release all buttons
when the display indicates
CFG
.
Calibration Pass Code
From the normal operating mode, press and hold the
TEST
and
the
t
buttons. Then press the
SEL
button. Release all buttons
when the display indicates
CAL
.
Test and Set Point Adjust Pass Code (optional)
From the normal operating mode, press and hold the
TEST
but-
ton. Then press the
SEL
button. Release all buttons when the
display indicates – – – – .
Before the unit enters the view or change pass code mode,
the display initially indicates _ _ _ _ with the first underscore
blinking, and with
CFGPC
,
CALPC
, or
TSTPC
on the lower
display.
Note: during pass code entry, the LEDs will be off and the gauge
will not respond to changes in applied pressure. The output
relays will maintain their prior states and the retransmission
output will maintain its prior value.
The gauge will automatically revert to normal operation if no
buttons are operated for approximately 15 seconds.
Enter Factory Pass Code 1220
Use the
s
and
t
buttons to set the left-most digit to 1.
Press and release the
SEL
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
SEL
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.
Changing the User-Defined Pass Codes
Press and release the
SEL
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
SEL
button to proceed. Note: If an incor-
rect pass code was entered, the gauge will exit to the normal
operating mode.
Once the correct password has been entered, the display will
indicate the existing pass code with
CFGPC
,
CALPC
, or
TSTPC
on the lower display.
Note: while in the pass code change mode, the LEDs will
extinguish and the unit will not respond to changes in applied
pressure and the output relays will be de-energized.
Operate the
s
or
t
button to select the first character of the
calibration password.
When the correct first character is being displayed, press
and release the
SEL
button to proceed to the next password
character.
Repeat he steps until the entire password is complete.
To exit the User-Defined Pass Code change mode, press and hold
the
SEL
button. Release the button when the display indicates
– – – – and restarts in the normal operating mode.
DPG1000ADA Series Digital Pressure Gauges with Alarms
4
