AST Krystal Bond User manual

AccuGauge AG100
Media Isolated Digital Pressure Gauge
TM
The AG100 series is a media isolated digital pressure
gauge featuring multiple measurement units, min/max
readings, selectable tare/zero and an automatic power
off to conserve battery power.Also, a backlight provides
improved visibility under marginal lighting conditions.
The AG100 will operate with any liquid or gas that is
compatible with 17-4PH stainless steel. Please consult
the factory for other available wetted materials.
The design of this one-piece sensing element contains no
silicone oil, welds or internal O-rings. The AG100 is ideal
for oxygen service, hydrogen* tanks and other critical
applications where uid lled gauges cannot be used.
Performance @ 25°C (77°F)
Pressure Range Anumber of preset ranges are available
Measurement Units PSI, BAR, kg/cm,ATM, InH20, InHg
Accuracy <±0.5% BFSL (Includes Non-linearity,
Hysteresis and Non-repeatability)
Stability (1 year) ±0.25% FS (typical)
Over Range Protection 2X Rated Pressure
Burst Pressure 5X or 20,000 PSI whichever is less
Pressure Cycles >100 Million
Environmental Data
Temperature
Media -55 to 125°C (-67 to 257°F)
Operating (Ambient) -10°C to 70°C (14°F to 158°F)
Storage -10°C to 85°C (14°F to 185°F)
Thermal Limits
Compensated Range 0°C to 55°C (32°F to 131°F)
TC Zero <±1.5% of FS
TC Span <±1.5% of FS
Specications
Display Update Rate 2 samples per second
Power 9 VoltAlkaline Battery
Automatic Power Off 1 Hour
Battery Life 4000 Hours Operation (typical)
Protection Rating NEMA 4, IP 65
Instrument Case Poly carbonate
Ordering Information
AG100 A V0100
Series Type
A=1/4” NPT Male
J= 1/8” NPT Female
Pressure range
Insert 5-digit pressure
range code
Pressure Ranges
Gage
PSIG Pressure Range Code
-14.7 to 50 V0050
-14.7 to 100 V0100
-14.7 to 250 V0250
-14.7 to 500 V0500
-14.7 to 1000 V1000
0 to 2500 02500
0 to 5000 05000
Technology
by AST
TM
Bond
K rystal

www.astsensors.com
AG100 Operating Instructions Rev 1.1
Warranty
Workmanship -AST, Inc. pressure transmitters have a limited one-year warranty to the original purchaser. AST, Inc. will replace or repair,
free of charge, any defective transmitter. This warranty does not apply to any units that have been modied; misused, neglected or installed
where the application exceeds published ratings. AST’s sensors are made with pride in New Jersey, USA. If in the area please feel free to
stop by for a visit!
Installation/Applications - The purchaser is responsible for media compatibility, functional adequacy, and correct installation of the transmitter.
TM
ON OFF
Press and release this button to turn theAccuGauge ON. Press and
hold this button to turn the AccuGauge OFF. When theAccuGauge
is ON press and release this button to turn on the backlight. The
AccuGauge will automatically turn OFF after one hour to conserve
battery power.
BACKLIGHT
The backlight of theAccuGauge will illuminate the LCD display for
10 seconds anytime one of the four buttons is pressed. To turn on
the backlight without changing the display, press and release the
ON/OFF button.
UNITS
Press the UNITS button to cycle through the units of measurement
theAccuGauge can display. TheAccuGauge can measure pressure
in PSI, BAR, Kg/cm2, Inches Hg, Inches H2O andATM. The unit
of measurement can be changed at any time and will not affect the
operation of theAccuGauge.
RELATIVE PRESSURE
Press and release the ZERO button to place theAccuGauge in
relative pressure mode. The RELsymbol will be displayed at the
top of the LCD to indicate the gauge is operating in relative pres-
sure mode. The display will rezero at the applied pressure that
was acting on the Gauge at the moment the button is pressed and
display pressure readings +/- relative to that pressure. Press this
button again to return to GAUGE mode of operation, which displays
pressure relative to the local pressure.
ZERO
Over the course of time it may become necessary to reset theAccu-
Gauge to zero. Press and hold the ZERO button until the REL sym-
bol appears and disappears and the display reads zero pressure in
the selected units of measurement. Release the ZERO button and
the display will read zero pressure in the current units selected.
MIN MAX
The MIN MAX button allows the user to read the minimum and
maximum pressure theAccuGauge has detected during the time
that the gauge has been on. These readings are not saved and
reset every time the gauge is powered off. Press the MIN MAX
button once and the MIN symbol will be displayed along with the
minimum pressure, press the MIN MAXbutton again and the MAX
symbol will be displayed along with the maximum pressure. Press
the MIN MAX button again and the MAX symbol will disappear and
the gauge will display the current pressure. Press and hold the MIN
MAX button to reset the minimum and maximum pressure readings.
LOW BATTERY
TheAccuGauge has a battery condition indicator in the upper left
corner of the LCD display. The indicator is composed of a battery
symbol and four vertical bars. As the battery discharges the verti-
cal bars will disappear from right to left. When all four bars have
disappeared the battery is nearly discharged. As a nal warning
the symbol LOW BAT will be displayed and indicates the battery is
nearing complete discharge and should be changed immediately.
For best results replace the battery immediately. Use onlyAlkaline
or Lithium 9V batteries.
BATTERY REPLACEMENT
(NOTE: DO NOT open theAccuGauge unless it is necessary to
change the Battery.) To replace theAccuGauge’s Battery, use
a Phillips Head screwdriver to remove the four screws from the
back plate of the gauge. Unplug the battery cable from the battery
terminals. Remove the battery from the battery holder. Put a new
battery into the holder, ensuring that it is rmly in place. Plug the
battery cable into the terminals of the battery. Make sure that the
polarity is correct. Replace the cover rmly in place. Replace the
four screws.