Ashcroft 2074, 2174, 2274 XAOU1 Operating Instructions Manual
The Ashcroft 2074 digital industrial gauge is a versatile and feature-rich device designed for accurate pressure measurement in various industrial applications. With its user-friendly interface and customizable features, this gauge provides reliable and precise pressure readings. Its compact size and rugged construction make it suitable for use in harsh environments. The Ashcroft 2074 offers multiple units of measurement, adjustable bar graph, backlight options, and auto-off functionality for extended battery life.
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I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 1
Digital
Industrial
Gauge
Operating
Instructions
I&M008-10109-3/06 dwg. 83B234-01 Rev. B 12/04
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 2
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 measurement, 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.
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 ........................................................16
Display Messages ..........................................17
Wiring Diagrams ........................................18-22
Gauge Installation & Maintenance........................24
• Mounting
• Battery Replacement & Installation
– 2 – – 3 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 4
.88˝ high digital display (4 1 ⁄
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
UNITS (Pressure)
ENGLISH
INHG
PSI*
INH2O
@ 4°C, 20°C, 60°F
FTW
FTSW
METRIC
BAR
MBAR
KPA
CMH2O
KG/CM2
QUICK REFERENCE
Press to read menu
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
Flashing display when unit pressurized beyond full-scale
This bar graph indicates battery level; the more segments, the closer the battery is to full charge (only displayed on units with battery
Press to turn backlite on or off
(backlite optional)
Range on keypad; complies with ASME B40.7
UPDATE RATE
(Pressure measurement per second)
10x (100 MS)*
5x (200 MS)
2x (500 MS)
1x (1 Sec)
AUTO OFF
(Turns unit off after option selected)
Never*
2 minutes
5 minutes
15 minutes
30 minutes
CALIBRATE
Zero and span adjustments, password protected
BACKLITE
(Off options)
Never
2 SEC
5 SEC*
15 MIN
30 MIN
DAMPENING
(Takes pressure reading and averages process pressure
None*
Avg 2
Avg 4
Avg 6
Avg 8
DISABLE
Allows for
“lockout” of
MENU options
– 4 –
*Indicates Default
– 5 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 6
ON/OFF
ZERO
CLR
KEYPAD FUNCTIONS
Turns the gauge on and off. When pressing the
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 usage to rezero any initial zero shift. If zero shift 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).
The (down arrow key) is used in the MENU mode, see following MENU key section.
MENU
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.
Key for gauge with Backlite
Key for gauge without Backlite displayed with
(up arrow icon only)
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 BACK-
LITE 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.
– 6 – – 7 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 8
ENTER
KEYPAD FUNCTIONS
This key allows for selecting gauge features in the 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
2
O with three temperature options: 20°C, 60°F, 4°C*, mBar, inHg, ftH
2
O, mPa, kPa, kg/cm 2 and bar.
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
2
0 range with three temperature options, press the (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 calibration 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 numeric 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.
– 8 –
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 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 10
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.
– 10 –
MENU FUNCTIONS
Note: Calibration of Zero, mid-scale or span can be set independently of each other. For instance, if only full-scale calibration is required, press the
(down arrow key)
until the gauge display indicates full-scale pressure. Press Enter and proceed as indicated above. Calibration of zero, midscale and full-scale is recommended when recalibrating the gauge.
ZERO KEY (0bUTN): This feature allows the user to select percent of full-scale at which the gauge can be rezeroed using the Zero/Clear key on the keypad. Options include 5% full-scale*, 10% full-scale or DISAB (disable of the zero key).
To use ZERO option:
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.
Step 4: Enter user password, if it has been programmed.
Step 5: Press the (up arrow key) or (down arrow key) until the word 0bUTN (zero key) appears.
Step 6: Press Enter.
Step 7: Press the (up arrow key) or (down arrow key) to select 5PCT (5% full-scale), dISAb (disable zero key) or 10PCT (10% full-scale).
Step 8: Press Enter to finalize the selection.
DISAB: or disable: This feature allows the user to dISAb
(or disable) or ENAb (enable) items in the MENU. Some keypad keys can also be enabled or disabled. Any or all
MENU items can be enabled or disabled.
To use DISAB option:
Step 1: Press the Menu key on the keypad.
Step 2: Press the (up arrow key) or (down arrow key) until the word dISAb appears.
*Indicates default.
– 11 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 12
MENU FUNCTIONS
Step 3: press ENTER. The current setting (ENAB or dISAB) will be displayed.
Step 4: Press the (up arrow key) or (down arrow key) on the keypad to select a setting.
Step 5: Press ENTER To finalize the setting.
GRAPH: This option allows the user to change the BAR graph on the gauge display to correspond to any desired pressure within the pressure limits of the gauge. This option is useful when identifying a select portion of the full-scale range of the gauge. The default setting for the
GRAPH is zero and full-scale pressure. For compound gauges, the default setting for zero is set at full-scale vacuum. Full-scale pressure is set at the positive pressure as displayed on the gauge keypad.
For gauges supplied with the 4-20mA output option, the default is 4mA equals 0% of the bar graph and 20 mA equals 100% of the bar graph.
Changing the bar graph to a pressure other than 0 and
100% of range will also change the 4-20mA output to correspond with the new bar graph pressures for 0 and 100%
.
To use GRAPH option:
Step 1: Press the MENU key.
Step 2: Press the (up arrow key) or (down arrow key) on the keypad until the word until the word GRAPH appears.
Step 3: Press ENTER . The gauge display will indicate the set full scale pressure range setting on the top line. The middle line indicates the bar graph at 100% of full-scale.
The bottom line of the display will indicate SETFS to set the full-scale range as displayed by the bar graph and 4-
20mA.
Step 4: Press the (up arrow key) or (down arrow key) on the keypad to increase or decrease gauge value at
100% of range.
*Indicates default.
– 12 –
MENU FUNCTIONS
Step 5: Press the ENTER key to finalize your choice. The gauge display will now display SET. After two seconds the screen will display the pressure value for 0% on the top line. The middle line indicates the bar graph at 100% of fullscale. The bottom line will display SET 0.
Step 6: Press the (up arrow key) or (down arrow key) on the keypad to increase or decrease gauge value at
0% of range.
Step 7: Press the ENTER key to finalize your choice. The new values for the bar graph and 4/20mA settings have now been saved.
OFF: This option sets the amount of time before the gauge will turn itself off. Offerings are Never*, 30MIN,10MIN, 5MIN, 2
MIN.
To use the OFF option:
Step 1: Press the MENU key.
Step 2: Press the (up arrow key) or (down arrow key) until the word OFF appears.
Step 3: Press ENTER.
Step 4: Press the (up arrow key) or (down arrow key) to select the desired OFF time.
Step 5: Press the Enter key to finalize the OFF setting.
UPDATE: This option allows for changing the rate at which pressure is updated on the display screen. This feature is useful with rapid changes in process pressure that may cause flutter of the display. Options are 100ms*, 1 sec,
500ms and 200ms, updates per second or 100ms*.
Since customer processes vary, update rates should be selected based on the application.
To use the UPDATE option:
Step 1: Press the MENU key.
*Indicates default.
– 13 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 14
MENU FUNCTIONS
Step 2: Press the (up arrow key) or (down arrow key) until the word UPDATE appears.
Step 3: Press Enter.
Step 4: Press the (up arrow key) or (down arrow key) to select an update rate.
Step 5: Press ENTER to finalize the selection.
DAMP or dampening: with five different options, this mode allows for taking process pressure readings and averaging them. This option is particularly useful to stabilize minor process fluctuations. The options are NONE*, AVG 8, AVG
6, AVG 4, AVG 2.
Step 1: Press the MENU key until the word dAMP appears.
Step 2: Press Enter
Step 3: Press the (up arrow key) or (down arrow key) to select a dampening option.
Step 4: Press the ENTER key to finalize your Damp option.
(This Menu item is only seen on units with the switch option)
SWSET: Allows for setting switch setpoints. The gauge is offered with one or two SPDT switches. If (one) SPDT switch is ordered the menu option is SW1. If (two) SPDT switches are ordered, the MENU options are SW1 and SW2.
Step 1: Press the MENU key.
Step 2: Press the (up arrow key) or (down arrow key) on the keypad to select the switch to be set. (If two switches are present.)
Step 3: Press ENTER. The top line of the gauge display will indicate pressure at 60% of the fullscale gauge range* or the most recent switch setpoint. The middle line of the display will indicate a bar graph that displays the pressure position within the pressure range. The bottom line will display SETPT (blinking).
*Indicates default.
– 14 –
MENU FUNCTIONS
Note: Setpoints are limited to the full-scale pressure range of the gauge.
Step 4: Press the (up arrow key) or (down arrow key) on the keypad to increase or decrease switch set-point
Step 5: Press the ENTER key to finalize switch setpoint. The gauge will display SET. After two seconds, the top line will indicate RETRP pressure. The bottom line will read SET.
Step 6: Repeat above to set RETRP (retrip value) If the gauge is supplied with (one) setpoint, the screen will advance to the measurement mode. If (two) switches are supplied the display will advance to SW2.
Repeat the aforementioned if the gauge is supplied with two switches.
Notes: The bar graph will increase or decrease as any setpoint pressure is adjusted. The bar graph indicates switch setpoint position within the full-scale pressure range of the gauge.
The switch setpoint unit of pressure measurement corresponds with the current set unit of measure of the gauge.
If gauge unit of measurement is changed after switch(es) is set, switch setpoint(s) will automatically be updated to correspond with revised unit of measurement. Switch deadband is the difference between the SETPT (setpoint) and the RETRP (retrip) pressure.
– 15 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 16
DIGITAL INDUSTRIAL GAUGE SPECIFICATIONS:
Type:
Accuracy:
Case Size:
Case Material:
Socket Location:
Ranges:
2074 (battery), 2174 (loop), 2274 (line)
.25% Full Scale, terminal point
3˝, 4 1 ⁄
2
Vac. thru 20,000 psi (see engineering units below for other units)
˝
Case Encl. Rating: Weatherproof, IP65
Wetted Materials: 17-4 SS (sensor), 316SS (socket)
Socket Size:
3˝ SS, 4 1
2
⁄ ˝ fiberglass reinforced thermoplastic or black epoxy coated aluminum
⁄ 1
4 or 1
2
⁄ NPT, JIS, DIN, SAE, ( others on application)
⁄ 1
2
NPT only with 4 ⁄ 1
2
˝ case,
Lower, 3, 9 and 12 o’clock
Operating Temp.: 14/140°F (10/60°C)
Storage Temp.: –4/158°F (-20/70°C)
DISPLAY
Type: LCD
Display Digits: Five (5)
Character Height: 3˝ .60˝, 4 1
2
⁄ ˝ .88˝
Backlite:
Bar Graph:
Optional
Yes
Battery Life: 3˝ > 1000 hrs., 4 1 ⁄
2
˝ > 3600 hrs.
Agency Approvals: CE, FM* (Intrinsically Safe Class1, Div 1), CSA and CENELEC
*FM is not available with the following: 4 ⁄ 1
2
˝ polypropylene case, SPDT switch option(s) (XU1, U2) or Backlite (XBL) option)
KEYPAD FUNCTIONS
On/Off:
Zero/Clear:
Manually turns unit on and off (auto off options in menu)
Zeros display or clears min. and max. values when displayed
Min/Max (down) Stores min and max values, arrow key allows for
Arrow Key: scrolling thru menu items
Menu Key: Provides access to menu options
Backlite (up)
Arrow Key:
Manually turns backlite on and off (auto off options in menu), arrow key allows for five menu options.
(Backlite optional) arrow key allows for scrolling thru menu options
(up)
Enter: Selects items in the menu
MENU MODE
Engineering Units: 10 units of measurement are available; psi, In. H three temp. options: 20°C, 60°F, 4°C*), Ft. H
2
2
O (with
O, mPa, mBar, kPa, kg/cm 2 , Bar, inHg and mmHg
Configuration Mode Allows for changes to default settings of gauge
(Config): Including zero disable feaure
Bar Graph (Graph): Allows for adjustment of bargraph and 4-20
(optional feature)
Auto Off (Off): Allows for changes to auto off of gauge, five options:
Never, 2 min., 5 min., 15 min., 30 min.
Update Rate
(Update): Four options: 100 ms, 200 ms, 500 ms, 1 sec
Dampening (Damp): Six options: None, average, 2, 4, 6, 8 times per 100ms
Backlite: Five options: Never, 10 sec., 30 sec., 1 min., 5 min.
Field Recalibration: Allows for recalibration of zero, midscale and span
(password protected)
OPTIONS
4-20mA Display:
Line Powered:
Switching*:
12-36 Vdc, mA with unlimited turndown (within gauge range)
12-36 Vdc, 2VA max.
(1) or (2) SPDT switches,(max. contact 30Vdc, 1 amp,
125Vac .5 Amp, Switches adjustable to 100% of range
– 16 –
DIGITAL INDUSTRIAL GAUGE RANGES: psi
Comp.
(psi)
600
800
1000
1500
2000
3000
5000
8000
60
100
160
200
300
-15/0/15 1500
-15/0/30 2000
-15/0/60 3000
30 -15/0/100
10,000
15,000
20,000 mmHg in.Hg
(press.) (press.)
60 800
100 1000
160
200
300
400
600
800
1000
1600
2000
3000
6000
In. mm
H
2
O H
2
O mBar ft.
H
2
O
60
100
160
200
250
300
400
500
300 600
400 1000
600 1500 600
800 2000 1000
1000 2500
300
400
4000
5000
30
60
160
200 mPa
6
10
50 kPa
200
300
400
600
800
1000
1600
2500
4000
6000
8000
Bar/ ksc
160
250
400
500
800
1000
16
25
40
60
100
6
10
2
4
DISPLAY MESSAGES:
Display/Problem
No Battery Icon
Display (applicable to gauges with batteries
OFSET (blinking)
Menu button disabled
Unit of measure selected in Menu displays N/A
I can’t set the password I want
Description
Gauge has <10% battery life left
Action
Replace batteries
Zero/Clear button pushed when pressure displayed is beyond set rezero pressure limit
Only rezero the gauge within limits of setting in Menu
Gauge is in
Max/Min mode
Push Max/Min button until unit of measure is displayed on keypad
Resolution at full scale pressure range exceeds 50,000 counts
00000 is not a valid password
Choose another unit of measure
Select a different password
I can’t access items in the main Menu
Items that cannot be accessed have been disabled
Enable item(s) in the Menu.
See Menu/CONFIG and diSAb or DISABLE
– 17 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 18
WIRING DIAGRAM
Line Powered (Type 2274)
2 conductor, 20 AWG shielded
Battery Input
Y1
C3
F1D1
V1
J1
1
R2
1
J6
R22 R20
C7
R7
1
C17
C2
FID4
FID6
C1
T10
D6
D3
T12
+24V
7
D11
C15
V2
5
R18
GND
R1
R5
Q1
C10
L1
U4
D8
T11
EGND
C9
R6
FID3
J5
321CO21–
Q2
J3
C4
C5
R4
C6
C8
DQ/TB 2003
Y2
J2
FID2
Sensor Input
227X
Wieco 9206
Shield
Black (– exc.)
Red (+ exc.)
Loop Powered 4-20mA (Type 2174)
2 conductor, 20 AWG shielded
Battery Input
Red
Black
Shield
(+ exc.)
(– exc.)
LOOP+
LOOP–
T7
D9
D7
Y1
C3
D10 C14 T9
ECND
R19
T8
R21
V6
J1
1
R2
C2
C7
4
C17
U7
D11
C15
R18
D12
T10
D15 D6
D3
T12
+24V GND
FID6
C1
FID4
V2
R1
R5
Q1
C10
L1
U4
T11
EGND
C9
R6
Q2 C5
J5
FID3
DRESSER
321CO21–
J3
C4
R4
C6 DQ/TB 2003
Y2
J2
FID2
Sensor Input
A
Wieco 9209 yp p
– 18 –
WIRING DIAGRAM
Line Powered/Loop Powered 4-20mA (Type 2274 XAO)
4 conductor, 20 AWG shielded
Battery Input
Red
Black
LOOP+
LOOP–
T7
D9
D7
Y1
D10 C14 T9
C3
F1D1
V1
ECND
R19
T8
R21
V6
J1
1
R2
1
C7
C2
FID6
C1
4
C17
U7
D11
C15
FID4
V2
R1
R5
+24V
3 D5
R18
D12
T10
D3
T12
GND
Q1
C10
D8
T11
EGND
J5
FID3
DRESSER
321CO21–
Q2
J3
C4
C9
R6
L1
U4 J2
C5
TB 2003
Y2
FID2
Sensor Input
Wieco 9209
Shield
Green
White
Line Powered with (1) SPDT switch (Type 2274 XU1)
5 conductor, 22 AWG shielded
– 19 –
(– exc.)
(+ exc.)
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 20
WIRING DIAGRAM
Line Powered/Loop Powered 4-20mA with (1) SPDT switch
(Type 2274 XAOU1) 7 conductor, 22 AWG shielded
Red
Black
(N.C.) Oran g e
(COM) Brown
Battery Input
J1
LOOP+ LOOP–
T7
D9
D7
Y1
C3
F1D1
V1
ECND
U5
R19
Q3
R15
ISO2
R17
C2
T3
FID6
C1
4
C17
U7
D11
C15
FID4
V2
C11
T2
K2
T1
K1
R1
R5
C10
L1
U4
J2
FID2
D16
D12
T10
D15 D6
D3
T12
+24V GND
T11
EGND
C9
R6
C5
J5
FID3
DRESSER
321CO21–
J3
C4
R4 C6 DQ/TB 2003
Y2
Sensor Input
A
Belden 9943
Shield
Green (– exc.)
White (+ exc.)
Line Powered with (2) SPDT switches (Type 2274 XU2)
8 conductor, 22 AWG shielded
(N.O.) White
(N.C.) Green
(COM) Brown
Switch 1
T3 T2 T1
Battery Input
D2
ISO1
Y1
C3
F1D1
V1 R15
ISO2
C11
J1
1
R2
1
J6
R22 R20
C7
R7
D1
D14
C17
U7
D11
C15
C2
R17
FID4
V2
FID6
C1
C13
C12
K2
K1
K2
R1
R5
Q1
C10
L1
U4
J3
1
J7
Q4
D16
R23 D5
D12
T10
D15 D6
D3
T12
R18
+24V GND
D8
T11
EGND
C9
R6
Q2 C5
J5
FID3
DRESSER
321CO21–
J3
C4
R4
C6
C8
DQ/TB 2003
Y2
J2
FID2
Keypad Input
Shield
Black (– exc.)
Red (+ exc.)
(N.O.)
(N.C.) Blue
(COM) Oran g e
Switch 2
Sensor Input
227X-XU2
Belden 9944
– 20 –
WIRING DIAGRAM
Line Powered/Loop Powered 4-20mA with (2) SPDT switches
(Type 2274 XAOU2) 10 conductor, 22 AWG shielded
Battery Input
Red
Black
(N.O.) Blue
(N.C.) Orange
(COM) Brown
S witch 1
LOOP+ LOOP– ECND
R19
T3
C2
FID4
R21
V6
T7 D10 C14 T9
D9
D7
Y1
C3
F1D1
V1
U5
T 8
ISO1
Q 3
R15
ISO2
R17
J1
1
R2
1
J6
R22 R20
C7
R7
D1
D14
C17
U7
D11
C15
V2
FID6
C1
C11
C13
C12
R1
R5
Q 1
C10
J3
1
J7
Q 4
D16
R23 D5
D12
T10
D15
D6
D3
T12
R1 8
+24V GND
D 8
T11
EGND
C9
R6
T2
D2
K2
K1
K2
L1
T1
U4
J5
FID3
DRESSER
321CO21–
Q 2
J3
C4
C5
R4 C6
C 8
D Q /TB 2003
Y2
J2
FID2
Keypad Input
S hield
Green (– exc.)
White (+ exc.)
(N.C.) Violet
(N.O.) Yellow
(COM) Grey
S witch 2
S en s or Input
227X-XAO-XU2
Belden 9946
– 21 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 22
WIRING DIAGRAM
–
POWER
S UPPLY
+
PIN A (+)
V+
GAUGE
+
PIN B (–)
V–
–
METER
4-20mA
(seperate power supply required when switch(s) is/are ordered)
Load Limitations 4-20mA Output Only
1000
750
500
250
OPERATING
REGION
0
0 10 20 30
Loop Supply Volta g e (Vdc)
36
Vdc MIN = 12V + [0.022A* X (RL) ]
R
L
= R
S
+ R
W
R
L
= Loop Resistance (ohms)
R
S
= Sense Resistance (ohms)
R w
= Wiring Resistance (ohms)
*Includes a 10% safety factor.
– 22 – – 23 –
I&M008-10109-DIG New 8-03 6/28/07 3:55 PM Page 24
GAAU GEE IIN N::
The Ashcroft digital industrial gauge comes standard with either ⁄ 1
4 or 1 ⁄
2
NPT connection.
Good piping practices recommend using teflon tape or a pipe sealant on the gauge threads. Utilize a 9 ⁄
16
˝ (3˝ case), 5 ⁄
8
˝ (4 1 ⁄
2
˝ case) wrench on the wrench flat of the gauge to tighten the gauge to the process.
NEVER TIGHTEN GAUGE THREADS BY HOLDING THE BODY OF THE GAUGE. DOING SO
MAY DAMAGE THE GAUGE AND MAKE THE GAUGE INOPERABLE.
NEELL M OU NTTIIN G D NSSIIO NSS
.17
MOUNTING
RING
CLAMPING RING (1278G ONLY)
WASHER
SPACER POST
(3 REQ’D)
HOLE
CUTOUT
DIAMETER
3.406
(3 13 ⁄
32
± 1 ⁄
32
)
1.860
6˝ RING
DIA.
5.65˝
PANEL
OPENING
“B” (3 REQ’D)
4.00
3˝ CASE
5/16˝ MAX PANEL
THICKNESS
PANEL
4 1 ⁄
2
˝ CASE
Battery Installation and Replacement:
The Type 2074 comes standard with batteries installed. The 3˝ case uses qty (2) AA alkaline batteries, the 4 1 ⁄
2
˝ case uses qty (2) C alkaline batteries. Use either Duracell MN2400,
MX2400 or Energizer E92BP, X92RP AAA alkaline, non-rechargeable batteries.
Batteries have a life of approximately 1500 hours (3˝ case). 3600 hours (4 1 ⁄
2
˝ case).
Battery life is dependent on gauge usage, backlite settings and power off settings. When the lower bar of the battery icon of the gauge display flashes, the gauge has approximately 7 hours of life remaining.
To replace the batteries (3˝ case):
1) Remove the single screw on the back of the gauge case.
2) Hold the keypad in the palm of hand.
3) Carefully remove the two batteries from the holder and replace batteries. Use only
AA alkaline non-rechargeable batteries.
To replace the batteries (4 1 ⁄
2
˝ case):
1) Remove the ring on the front of the gauge case.
2) Looking at the gauge case, carefully pull the front face out of the case.
3) Lay the gauge, face down on a flat surface.
To provide maximum battery life, replace both batteries.
!
Pipe to which gauge is attached must be properly grounded.
4) Carefully remove the two batteries from the holder and replace the batteries.
Use only C alkaline non-rechargeable batteries. To provide maximum battery life, replace both batteries.
Ashcroft Inc.
250 East Main Street
Stratford, CT 06614-5145
Tel: 203-378-8281
Fax: 203-385-0602 e-mail: [email protected]
www.ashcroft.com
Notes:
1) Do not mix ages or brands of batteries.
2) Do not replace batteries in hazardous areas.
© Ashcroft Inc. 3/06 I&M008-10109-GBE dwg. 83B234-01 Rev. B 12/04
– 24 –

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