Ashcroft 2074 User manual

I&M008-10109 Rev. F 10/13
Digital Industrial Gauge
Operating Instructions
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Congratulations on your purchase of the Ashcroft®
digital industrial 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
ASM 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
eypad Functions ..........................................6-8
• ON/OFF K Y
• Z RO/CL AR K Y
• MIN/MAX K Y (down arrow key)
• M NU K Y
• BACKLIT K Y (up arrow key)
• NT R K Y
MENU Functions (MENU Mode) ................................8-15
• ngineering 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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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
Press to read menu
UNITS (Pressure)
ENGLISH
INHG
PSI*
INH2O
@ 4°C, 20°C, 60°F
FTW
FTSW
ETRIC
BAR
BAR
KPA
C H2O
KG/C 2
UPDATE RATE
(Pressure measurement
per second)
10x (100 MS)*
5x (200 S)
2x (500 S)
1x (1 Sec)
BACKLITE
(Off options)
Never
2 SEC
5 SEC*
15 IN
30 IN
.88˝ high digital display (41⁄2˝ case)
.60 high digital display(3˝ case)
QUICK REFE
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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
This bar graph indicates battery level;
the more segments, the closer the
battery is to full charge (only dis-
played on units with battery
Flashing display when unit
pressurized beyond full-scale
Press to turn backlite on or off
(backlite optional)
Range on keypad;
complies with AS E B40.7
Press to turn unit on or off
ent
AUTO OFF
(Turns unit off after
option selected)
Never*
2 minutes
5 minutes
15 minutes
30 minutes
CALIBRATE
Zero and span
adjustments,
password
protected
DISABLE
Allows for
“lockout” of
ENU
options
DA PENING
(Takes pressure reading
and averages
process pressure
None*
Avg 2
Avg 4
Avg 6
Avg 8
*Indicates Default
REFERENCE
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Turns the gauge on and off. When pressing the
ON/OFF key while in the off position, gauge start-
up display first indicates the software version
followed by the model number and gauge pres-
sure range. The gauge will then display indicated
pressure and be ready for use.
Press this key for one second prior to gauge
usage to rezero any initial zero shift. If zero shift
is greater than programmed zero allowance, the
gauge will display OFS T (blinking) for 1 sec-
ond, then return to the measure mode. To clear
minimum and maximum values, press
Z RO/CLR button (when min/max values are
indicated). Gauge will auto advance once zeroed.
EYPAD FUNCTIONS
ON/OFF
ZERO
CLR
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) xit MAX/MIN mode and return the unit to
pressure measurement mode. To clear mini-
mum and maximum values press Z RO/CLR
key (must be in MAX/MIN mode).
The (down arrow key) is used in the M NU
mode, see following M NU key section.
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This key allows for customization of the gauge.
Pressing the M NU key allows cycling through
the main M NU 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
M NU options to increase or decrease numeric
values as required. If in the menu mode, gauge
will automatically advance to measure mode
once selected M NU item has been set.
This key manually turns the backlite on or off.
Five options are available. They include N V R,
10 sec, 30, sec, 1 min, 5 min*. With the N V R
option, the gauge BACKLIT will remain lit
whenever the gauge is in the ON mode or until
the BACKLIT button is pushed again. Options,
10 sec, 30 sec, 1 min, 5 min*. allow the BACK-
LIT to automatically turn-off after a selected
period of time.
To use the BAC LITE option:
Step 1: Press the M NU key.
Step 2: Press the (up arrow key) or (down
arrow key) until the word LIT appears.
Step 3: Press NT R.
Step 4: Press the (up arrow key) or (down
arrow key) to select the BACKLIT option.
Step 5: Press the NT R key to finalize your
choice of LIT options.
EYPAD FUNCTIONS
MENU
ey for gauge
with Backlite
ey for gauge
without Backlite
displayed with
 (up arrow
icon only)
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EYPAD FUNCTIONS
MENU OPTIONS
UNITS: 12 units of measurement are available: psi, mmHG,
inH2O with three temperature options: 20°C, 60°F, 4°C*,
mBar, inHg, ftH2O, mPa, kPa, kg/cm2and bar.
Step 1: Press the M NU key until the word UNITS appears.
Step 2: Press NT R.
Step 3: Press the (up arrow key) or  (down arrow
key) to select the required unit of measure.
Step 4: Press NT R to finalize the UNIT selection.
Note: For inH20 range with three temperature options,
press the

(up arrow key) and

(down arrow key) to
select the desired temperature, then press ENTER to final-
ize 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 M NU 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.
Default user password is 12045 or 12*45.
*Indicates default.
ENTER
This key allows for selecting gauge features in the
menu finalizing selection. Use of the enter key is
described throughout operating instructions.
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How to Use Your Menu Functions
To set a user password (SETPW):
Step 1: Press the M NU key on the keypad
Step 2: Press the (up arrow key) or (down arrow
key) until the word CONFIG appears.
Step 3: Press NT R. The word S TPW appears on the
gauge display
Step 4: Press NT R. 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 NT R.
Step 7: Repeat until the five-digit password is shown on
the gauge display.
Step 8: Press NT R.
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 NT R 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 NTPW 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 R CAL
feature also allows for recalibration of gauges with
4-20mA output.
MENU FUNCTIONS
*Indicates default.
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To use RECAL option:
Step 1: Press the M NU 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 NT R.
Step 4: nter user password if it has been programmed.
Step 5: Press (up arrow key) or (down arrow key)
until the word R CAL appears.
Step 6: Press NT R.
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 NT R. Zero pressure is now set.
Step 9: The gauge will display full-scale pressure. Apply
full-scale pressure to the gauge.
Step 10: Press NT R. 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 NT R. Mid-scale pressure is now set.
Step 13: After zero, full-scale and/or mid-scale or factory
default calibration have been set, the word SAV appears
on the gauge display.
Step 14: Press NT R to finalize calibration.
(Note: For compound ranges this recalibration is zero,
full-scale, mid-scale and full-vac.)
FOR FACTORY CALIBRATED SETTINGS:
To reinstate factory settings for zero, full-scale and mid-
scale follow R CAL steps 1-6
Step 7: When the word INPUT appears press (up arrow
key) until the word FACT appears.
Step 8: Press NT R to finalize calibration.
MENU FUNCTIONS
*Indicates default.
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