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DPG1000DAR Series Digital Pressure Gauges Alarms and 4-20 mA Output
User Configuration—cont.
when the pressure falls below Setpoint 2. Alarm 2 will be RESET
when the pressure rises above Setpoint 2 plus the preset deadband.
To select SP2_L, press and release the t button. The lower display
will indicate SP2_L.
If SP2_H is selected Alarm 2 will be a high alarm. Alarm 2 will be
SET when the pressure rises above Setpoint 2. Alarm 2 will be
RESET when the pressure falls below Setpoint 2 minus the preset
deadband. To select SP2_H, press and release the s button. The
lower display will indicate SP2_H.
Press and release the SEL button to move to the next parameter.
Relay Action Selection (Fixed Deadband Configuration)
The lower display will display either _NOR_ or _REV_.
If _NOR_ is selected, the output relay coils will be energized in the
RESET state and de-energized in the SET state (normal action). To
select _NOR_, press and release the t button. The lower display
will indicate _NOR_.
If _REV_ is selected, the output relay coils will be de-energized in
the RESET state and energized in the SET state (reverse action). To
select _REV_, press and release the s button. The lower display
will indicate _REV_.
Press and release the SEL button to move on to the next parameter.
Relay Power Up State (Adjustable Hysteresis configuration)
The lower display will display either SP1_L or SP1_H.
If SP1_L is selected and the gauge is powered up while the applied
pressure is between the Output 1 SET and RESET trip points, Output
1 will begin in the RESET state. To select SP1_L, press and release
the t button. The lower display will indicate SP1_L.
If SP1_H is selected and the gauge is powered up while the applied
pressure is between the Output 1 SET and RESET trip points, Output
1 will begin in the SET state. To select SP1_H, press and release the
s button. The lower display will indicate SP1_H.
Press and release the SEL button to move to Relay 2.
The upper display will be blank, and the lower display will display
either SP2_L or SP2_H.
If SP2_L is selected and the gauge is powered up while the applied
pressure is between the Output 2 SET and RESET trip points, Output
2 will begin in the RESET state. To select SP2_L, press and release
the t button. The lower display will indicate SP2_L.
If SP2_H is selected and the gauge is powered up while the applied
pressure is between the Output 2 SET and RESET trip points, Output
2 will begin in the SET state. To select SP2_H, press and release the
s button. The lower display will indicate SP2_H.
Press and release the SEL button to move on to the next parameter.
Relay Action Selection (Adjustable Hysteresis Configuration)
The upper display will be blank, and the lower display will display
either _NOR1 or _REV1.
If _NOR1 is selected, the Output 1 relay coil will be energized in the
RESET state and de-energized in the SET state (normal action). To
select _NOR1, press and release the t button. The lower display
will indicate _NOR1.
If _REV1 is selected, the Output 1 relay coil will be de-energized in
the RESET state and energized in the SET state (reverse action). To
select _REV1, press and release the s button. The lower display
will indicate _REV1.
Press and release the SEL button to move on to Relay 2.
The upper display will be blank, and the lower display will display
either _NOR2 or _REV2.
If _NOR2 is selected, the Output 2 relay coil will be energized in the
RESET state and de-energized in the SET state (normal action). To
select _NOR2, press and release the t button. The lower display
will indicate _NOR2.
If _REV2 is selected, the Output 2 relay coil will be de-energized in
the RESET state and energized in the SET state (reverse action). To
select _REV2, press and release the s button. The lower display
will indicate _REV2.
Press and release the SEL button to move on to the next parameter.
Analog Output Range Lower Limit Adjust (DAR only)
The upper display will indicate the pressure value corresponding
to the 4 mA retransmission output. The lower display will display
RNGLO.
Use the s and t buttons to adjust the display to the desired value.
Press and release the SEL button to move on to the next parameter.
Analog Output Range Upper Limit Adjust (DAR only)
The upper display will indicate the pressure value corresponding
to the 20 mA retransmission output. The lower display will display
RNGHI.
Use the s and t buttons to adjust the display to the desired value.
Press and release the SEL button to move to the next parameter.
User Configuration—cont.
Output Test and Set Point Adjust Modes Pass Code Protection
The upper display section will be blank, and the lower section will
display either TSTPC or NOTPC.
To enable Output Test and Set Point Adjust Modes pass code
protection, press and release the s button. The lower display will
indicate TSTPC.
To disable Output Test and Set Point Adjust Modes pass code
protection, press and release the t button. The lower display will
indicate NOTPC.
Press and release the SEL button to save the configuration param-
eters and restart the unit. Note: The configuration parameters will
not be saved if the procedure is interrupted before completion.
Calibration Preparation
The gauge is calibrated at the factory using equipment traceable to
NIST. There is no need to calibrate the gauge before putting it in
service. Calibration should only be performed by qualified individu-
als using appropriate calibration standards and procedures.
The calibration equipment should be at least four times more
accurate than the gauge being calibrated. The calibration system
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.
For DAR models use an accurate volt or mA meter for calibration of
the retransmission output.
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 buttons 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 section.
Upon successful calibration pass code entry, the upper display will
indicate the applied pressure in the configured engineering 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 – – – – .
Calibration of the Retransmission Output (DAR only)
Calibration of the retransmission output coordinates the retransmis-
sion output to the display indication, and is performed independent-
ly of applied pressure. It requires a direct physical measurement of
the retransmission output.
Retransmission Output Low Value (DAR only)
Press and release the SEL button to step to the retransmission output
low value calibration sequence, indicated by LCAL on the display.
Note: If the SEL button is held depressed for longer than 2 seconds,
the display will change to indicate – – – –, and the gauge will exit
the calibration mode when all buttons are released.
The upper display will indicate the pre-configured pressure corre-
sponding to the retransmission output low value. The lower display
will alternate between CAL and 4 mA.
Use the s and t buttons to adjust the actual retransmission output
to its low value.
Retransmission Output High Value (DAR only)
Press and release the SEL button to step to the retransmission output
high value calibration sequence, indicated by HCAL on the display.
Note: If the SEL button is held depressed for longer than 2 seconds,
the display will change to indicate – – – –, and the gauge will exit
the calibration mode when all buttons are released.
The upper display will indicate the pre-configured pressure corre-
sponding to the retransmission output high value. The lower display
will alternate between CAL and 20 mA.
Use the s and t buttons to adjust the actual loop current to its
high value.
Pressure Calibration
The pressure calibration procedure adjusts the display indication,
and for DAR models also the retransmission output, 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.
Calibration—cont.
Note: If the SEL button is held depressed for longer than 2 seconds,
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 alter-
nate 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 positive
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 alter-
nate 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 – – – – .
Changing the User-Defined Pass Codes
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 button.
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 main-
tain 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.
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 incorrect
pass code was entered, the gauge will exit to the normal operat-
ing mode.
Once the correct password has been entered, the display will
indicate the existing pass code with CFGPC, CALPC, or TSTPC on
the character segments.
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 1 & 2 above 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.
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