To select NOZTR, press and release the
t
button. The lower
display will indicate NOZTR.
Press and release the SEL button to move on to the next
parameter.
Analog Output Range Lower Limit Adjust
The upper display will indicate the pressure value correspond-
ing to the minimum retransmission output, either 4 mA, 0 VDC,
or –2 VDC depending on the particular gauge model. 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
The upper display will indicate the pressure value correspond-
ing to the maximum retransmission output, either 4 mA or
+2 VDC depending on the particular gauge model. 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.
Output Test Adjust Mode Pass Code Protection
The upper display section will be blank, and the lower section
will display either TSTPC or NOTPC.
To enable Output Test Adjust Mode pass code protection,
press and release the
s
button. The lower display will indicate
TSTPC.
To disable Output Test Adjust Mode 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
parameters and restart the unit. Note: The configuration
parameters will not be saved if the procedure is interrupted
before completion.
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.
Use an accurate volt or mA meter for calibration of the retrans-
mission output.
Allow the gauge to equalize to normal room temperature (about
20 minutes minimum) before 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 ini-
tially 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 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 – – – – .
Calibration of the Retransmission Output
Calibration of the retransmission output coordinates the
retransmission output to the display indication, and is per-
formed independently of applied pressure. It requires a direct
physical measurement of the retransmission output with an
accurate mA or Volt meter.
Retransmission Output Low Value
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 sec-
onds, 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
corresponding to the retransmission output low value.
The lower display will alternate between CAL and 4 mA, 0 VDC,
or –2 VDC depending on retransmission option.
Use the
s
and
t
buttons to adjust the actual retransmission
output to its low value.
Retransmission Output High Value
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 sec-
onds, 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
corresponding to the retransmission output high value.
The lower display will alternate between CAL and 20 mA or +2
VDC depending on retransmission option.
Use the
s
and
t
buttons to adjust the actual retransmission
output to its high value.
Press the SEL button briefly to proceed to pressure calibration
or hold the SEL button for 2 seconds to save and exit.
The pressure calibration procedure adjusts the display indica-
tion, and 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.
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 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 indi-
cate 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 indi-
cate 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 indi-
cate the applied pressure value.
Continued on next page.....
Output Calibration
Calibration Pass Code
A pass code is required to calibrate and configure the gauge.
Additional levels of security may be enabled by defining
separate pass codes for calibration, user configuration, and
output test.
See Changing the User-Defined Pass Code at the end of this
manual to change pass codes.
Functions in user configuration mode
Restore original factory configuration
Enable/disable zero tare function
Retransmission output upper and lower limits
Enable/disable a pass code for output test
When the gauge enters a mode requiring a pass code, the
display indicates _ _ _ _ with the first underscore blinking,
and either TSTPC, CFGPC, CALPC on the lower display. All
three pass codes are initially set to the factory default of 3510.
Note: During pass code entry the gauge will not respond to
changes in applied pressure. The gauge will automatically
revert to the normal operation if no buttons are operated for
approximately 15 seconds.
Use the
s
and
t
buttons to set the left-most digit to 3.
Press and release the SEL button to index to the next position.
The 3 will remain, and the second position will be blinking.
Use the
s
and
t
buttons to select 5.
Press and release the SEL button to index to the next position. 3
5 will remain, and the third position will be blinking.
Use the
s
and
t
buttons to select 1.
Press and release the SEL button to index to the next position. 3
5 1 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.
If an incorrect pass code was entered, the gauge will to exit to
the normal operating mode.
Upon successful pass code entry, follow the steps in the appro-
priate section of this manual.
Note: To exit a mode at any time, press and hold the SEL button
until the display indicates – – – – .
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.
Before the gauge enters the Configuration mode, the display
initially indicates _ _ _ _ with the first underscore blinking,
and with CFGPC on the lower display.
Enter the pass code as described in the Pass Code Entry section.
Restore Factory Configuration
The upper display will be blank, and the lower display will
display either USER_ or FCTRY.
If USER_ is selected, the existing user configuration will be
retained and will be accessible for modification in the following
steps. To select USER_, press and release the
t
button. The
lower display will indicate USER_.
If FCTRY is selected, the existing user configuration will be
replaced by the configuration as it left the factory and will be
accessible for modification in the following steps. To select
FCTRY, press and release the
s
button. The lower display will
indicate FCTRY.
Press and release the SEL button to move on to the next
parameter.
Zero Tare Configuration
The upper display will be blank, and the lower display will
indicate either ZTARE or NOZTR.
If ZTARE is selected, the user will be able to manually zero the
gauge from the normal operating mode.
To select ZTARE, press and release the
s
button. The lower
display will indicate ZTARE.
If NOZTR is selected the user will be prevented from zeroing the
gauge from the normal operating mode. This is default setting
for absolute reference ranges.
User Configuration
Pass Code Entry
Instructions
F16DR, F16DRN
Calibration Preparation
User Configuration—continued
Pressure Calibration
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