Ashcroft 2236 User Manual
Digital
Sanitary
Gauge
Operating
Instructions
I&M008-10162-10/08 Rev. 09/11
Congratulations on your purchase of the Ashcroft
®
digital sanitary gauge. This feature-packed gauge
offers a menu-driven display for easy customization.
User selectable features include 12 units of measure-
ment, password protected calibration and disable
functions, adjustable bar graph and update rate. A
five digit display for maximum resolution is standard.
Optional 4-20mA output, switching and line- power
add to the versatility of the gauge. With the range
printed on the keypad, Ashcroft digital gauges meet
ASME B40.7 specification. See a complete listing of
product features and specifications on pages 16.
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TABLE OF CONTENTS
Quick Reference ............................................4-5
Keypad Functions ..........................................6-8
• ON/OFF KEY
• ZERO/CLEAR KEY
• MIN/MAX KEY
(down arrow key)
• MENU KEY
• BACKLITE KEY
(up arrow key)
• ENTER KEY
MENU Functions (MENU Mode) ................................8-15
• Engineering Units
• CONFIG Mode
• Set Password
• Recalibration of Gauge
• Zero Key Adjustment
• Disabling Menu Options
• Bar Graph Options
• Auto Off Options
• Update Options for Displayed Pressure
• Dampening Options
• Backlite Options (Backlite Optional)
• Set Switch(es) Option(s) (Switches Optional)
Specifications ................................................16
Ranges ........................................................17
Display Messages ..........................................17
Wiring Diagrams ........................................18-29
Gauge Installation & Maintenance ....................30-32
• Mounting
• Battery Replacement & Installation
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.88˝ high digital display (41⁄2˝ case)
.60 high digital display(3˝ case)
Bar graph
% of full scale
Flashing display when unit
pressured below zero
Press to indicate minimum
or maximum pressure
gauge has measured
Press again to return to
pressure units
316LSS
UNITS (Pressure)
ENGLISH
INHG
PSI*
INH2O
@ 4°C, 20°C, 60°F
FTW
FTSW
METRIC
BAR
MBAR
KPA
CMH2O
KG/CM2
QUICK RE
Press to read menu
UPDATE RATE
(Pressure measurement
per second)
10x (100 MS)*
5x (200 MS)
2x (500 MS)
1x (1 Sec)
BACKLITE
(Off options)
Never
2 SEC
5 SEC*
15 MIN
30 MIN
– 4–
Press to turn unit on or off
While in unit of measurement mode (eg: psi),
press the ZERO CLEAR button to rezero the
gauge. This feature functions when displayed
pressure is within ±5% or 10% of zero value
pressurized beyond full-scale
This bar graph indicates battery level;
the more segments, the closer the
battery is to full charge (only dis-
played on units with battery
Press to turn backlite on or off
Range on keypad;
complies with ASME B40.7
AUTO OFF
(Turns unit off after
option selected)
Never*
2 minutes
5 minutes
15 minutes
30 minutes
Flashing display when unit
(backlite optional)
12-20RA Surface finish
CALIBRATE
Zero and span
adjustments,
password
protected
DAMPENING
(Takes pressure reading
and averages
process pressure
None*
Avg 2
Avg 4
Avg 6
Avg 8
– 5–
DISABLE
Allows for
“lockout” of
MENU
options
*Indicates Default
KEYPAD FUNCTIONS
Turns the gauge on and off. When pressing the
ON/OFF
ON/OFF key while in the off position, gauge startup display first indicates the software version
followed by the model number and gauge pressure range. The gauge will then display indicated
pressure and be ready for use.
Press this key for one second prior to gauge
ZERO
usage to rezero any initial zero shift. If zero shift
CLR
is greater than programmed zero allowance, the
gauge will display OFSET (blinking) for 1 second, then return to the measure mode. To clear
minimum and maximum values, press
ZERO/CLR button (when min/max values are
indicated). Gauge will auto advance once zeroed.
MAX/MIN
The Max/Min key allows review of minimum and
maximum pressure values since unit start-up or
last push of the clear key. Press key to:
1) Indicate maximum pressure.
2) Indicate minimum pressure.
3) Exit MAX/MIN mode and return the unit to
pressure measurement mode. To clear minimum and maximum values press ZERO/CLR
key (must be in MAX/MIN mode).
(down arrow key) is used in the MENU
The
mode, see following MENU key section.
– 6–
MENU
Key for gauge
with Backlite
Key for gauge
without Backlite
displayed with
(up arrow
icon only)
KEYPAD FUNCTIONS
This key allows for customization of the gauge.
Pressing the MENU key allows cycling through
the main MENU items; UNITS, CONFIG, GRAPH,
OFF, UPDAT & DAMP. Any item changed in the
Menu become the new default setting(s).
Revised settings are saved in the event of power
loss.
The
(up arrow key) or (down arrow key)
on the keypad allows for scrolling through the
MENU options to increase or decrease numeric
values as required. If in the menu mode, gauge
will automatically advance to measure mode
once selected MENU item has been set.
This key manually turns the backlite on or off.
five options are available. They include NEVER,
10 sec, 30, sec, 1 min, 5 min*. With the NEVER
option, the gauge BACKLITE will remain lit
whenever the gauge is in the ON mode or until
the BACKLITE button is pushed again. Options,
10 sec, 30 sec, 1 min, 5 min*. allow the BACKLITE to automatically turn-off after a selected
period of time.
To use the BACKLITE option:
Step 1: Press the MENU key.
Step 2: Press the
(up arrow key) or (down
arrow key) until the word LITE appears.
Step 3: Press ENTER.
Step 4: Press the
(up arrow key) or (down
arrow key) to select the BACKLITE option.
Step 5: Press the ENTER key to finalize your
choice of LITE options.
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KEYPAD FUNCTIONS
This key allows for selecting gauge features in the
ENTER
menu finalizing selection. Use of the enter key is
described throughout operating instructions.
MENU OPTIONS
UNITS: 12 units of measurement are available: psi, mmHG,
inH
O with three temperature options: 20°C, 60°F, 4°C*,
2
mBar, inHg, ftH
O, mPa, kPa, kg/cm2and bar.
2
Step 1: Press the MENU key until the word UNITS appears.
Step 2: Press Enter.
Step 3: Press the
(up arrow key) or (down arrow
key) to select the required unit of measure.
Step 4: Press ENTER to finalize the UNIT selection.
Note: For inH
press the
0 range with three temperature options,
2
(up arrow key) and (down arrow key) to
select the desired temperature, then press ENTER to finalize the UNIT selection.
CONFIG: This option allows access to additional Menu
options. Options include:
• ENTPW or enter password (this appears as a sub-menu
in the CONFIG mode if a user password has been set).
• RECAL (allows for zero, span and mid-scale calibra-
tion of the gauge).
• 0bUTN or zero key (allows for adjustment of % of
range that can be zeroed),
• dISAb, allows for disabling MENU options.
• SETPW: This feature allows for a user defined numer-
ic password. If a user password is not set, all features
in the CONFIG mode will be accessible without a
password. If a user password is set, all items in the
CONFIG menu options are accessible with or without
a user password. If a user password is programmed,
it will be required to access the CONFIG menu options.
*Indicates default.
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KEYPAD FUNCTIONS
MENU FUNCTIONS
How to Use Your Menu Functions
To set a user password (SETPW):
Step 1: Press the Menu key on the keypad
Step 2: Press the
(up arrow key) or (down arrow
key) until the word CONFIG appears.
Step 3: Press Enter. The word SETPW appears on the
gauge display
Step 4: Press Enter. A five digit numeric password is now
required.
Step 5: Press the
(up arrow key) or (down arrow
key) on the keypad to select the first digit of the password.
Step 6: Press ENTER.
Step 7: Repeat until the five-digit password is shown on
the gauge display.
Step 8: Press ENTER.
Note: to erase password at any time while in the SETPW
(set password) mode, press the ZERO/CLEAR key. The
user will be prompted to reprogram the password once the
five-digit password is entered. The gauge will display SAVE.
Step 9: Press Enter to save the password setting.
ENTPW: Once a user password has been established and
entry into the CONFIG mode is required, the user will be
prompted to ENTPW or enter password.
Follow setup steps 4-8 above.
RECAL: or recalibrate allows for zero, mid-scale, full-scale
and factory default calibration of the gauge. The RECAL
feature also allows for recalibration of gauges with
4-20mA output.
*Indicates default.
– 9–
MENU FUNCTIONS
To use RECAL option:
Step 1: Press the Menu key on the keypad
Step 2: Press the
(up arrow key) or (down arrow
key) on the keypad until the word CONFIG appears.
Step 3: Press Enter.
Step 4: Enter user password if it has been programmed.
Step 5: Press
(up arrow key) or (down arrow key)
until the word RECAL appears.
Step 6: Press Enter.
Step 7: The gauge will now flash between INPUT and unit
of measure on the lower line and .00 on the top line. Apply
zero pressure to the gauge.
Step 8: Press Enter. Zero pressure is now set.
Step 9: The gauge will display full-scale pressure. Apply
full-scale pressure to the gauge.
Step 10: Press Enter. Full-scale pressure is now set.
Step 11: The gauge will now display mid-scale pressure.
Apply mid-scale pressure to the gauge.
Step 12: Press Enter. Mid-scale pressure is now set.
(Note: For compound ranges this recalibration is zero,
full-scale, mid-scale and full-vac.)
FOR FACTORY CALIBRATED SETINGS:
Step 13: To reinstate factory calibrated settings for zero,
full-scale and mid-scale press the
(down arrow key)
Menu key until the word FACT appears.
Step 14: Press Enter. Factory calibration settings are now
reinstated.
Step 15: After zero, full-scale and/or mid-scale or factory
default calibration have been set, the word SAVE appears
on the gauge display.
Step 16: Press Enter to finalize calibration.
*Indicates default.
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