DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 1 Installation and Operating Instructions for General Purpose Digital Pressure Gauge Type DG25 Software Version 1.00.00 Ashcroft Inc. 250 East Main Street, Stratford, CT 06614 USA Tel: 203-378-8281, Fax: 203-385-0402 www.ashcroft.com All sales subject to standard terms and conditions of sale. © 2012 Ashcroft Inc.
DG25 I&M Rev.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 3 WARNING! READ BEFORE INSTALLATION 1. GENERAL: A failure resulting in injury or damage may be caused by excessive overpressure, excessive vibration or pressure pulsation, excessive instrument temperature, corrosion of the pressure containing parts, or other misuse. Consult Ashcroft Inc. Stratford, Connecticut, USA before installing if there are any questions or concerns.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 4 4. GENERAL INFORMATION: Keypad: Power On-Off / Enter | Tare Zero / Up Arrow / Tare ZERO Menu Selection / Down / Backlight Arrow MENU ➟ ➟ Key presses are short less than 0.5 seconds or long greater than 0.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 5 LCD DISPLAY: LCD functions: 5 numerical digits for pressure display. 20 segment pressure range bar graph – each segment equals 5% of range. Sleep and Backlight Timer symbols. Maximum / Minimum Pressure and Tare icons. 5 character alpha-numeric digit display. 4 segment battery life indicator. Negative pressure indicator.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 6 Note: Key presses designated as short (less than 0.5 sec) are indicated by “➟” ICON ZERO Press ➟. Upon release, the numeric display momentarily disappears and “ZERO” shows in alpha display, then returns to measurement mode. The pressure should now read 0. Zero value is stored in memory. Zero Function: Key presses designated as long (greater than 0.5 sec.) are indicated by “➟” ICON | ➟key to turn instrument ON / Press OFF.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 7 Tare Function: Programming: Subtracts current pressure value from value displayed in Measurement mode. To enter menu mode MENU 1. Press ➟and release to proceed to programming mode. In Measurement mode, apply desired pressure ZERO press ➟, to enable the tare function. The display will quickly flash “TARE”, then the “TARE” icon will be displayed and the pressure reading will blink. The unit should now read 0.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 8 Once the desired value is displayed, press | ➟ button to lock it in place. Now the the next digit to the right will begin blinking. Repeat this procedure for all 5 digits. When | ➟ is pressed and released with the the fifth digit flashing, the gauge will briefly display “DONE” then return to measurement mode and display “CUSTU” along with the numeric readings to signify that the feature is use.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 9 Maximum / Minimum: Timer: Displays maximum / minimum pressure values; this is initiated upon powering the unit or since the values were cleared. Controls how long the gauge will remain pow| is pressed. ered ON once the Power key 1. When in menu mode press , ➟ to scroll until “TIMER” is displayed. 1.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 10 Light: Update: Determines how long the back light will remain ON after any key is pressed in Measurement or Menu Modes (Note: The timer is reset with any key being pressed.) Utilized to select the rate at which the displayed pressure value is updated on the screen. This function is used when rapid changes in pressure cause “flutter” in the display values; longer intervals will reduce the update rate and “average” the readings on such applications.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 11 Z-Lock: Re-Calibration: Utilized to prevent inadvertent re-zeroing of the instrument. Provides the user the ability to field calibrate the product. Original factory calibration is permanently retained in memory and can be recalled at any time. 1. In Menu mode, press , ➟until “ZLOCK” appears. 1. In menu mode press , ➟until “RECAL” appears; proceed to press | ➟. ➟to select. , ➟to select “L ON” or “L | 2. Press 3.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 12 8. Display flashes “APPLY/ REF/ PSI/ THEN/ PRESS/ ENTER/ TO/ START/ OR/ OTHER/ TO/ ABORT”; apply the pressure indicated in numeric display to gauge and press | ➟ display will show “WAIT” and count down from 6 seconds then briefly display GOOD then exit into measurement mode, or Graph: Provides the user the ability to modify pressure values dictating the minimum / maximum indications over the 20 segment bar graph. 1.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 13 Reset: 6. To program minimum graph percentage, the display will indicate 0 0 with the right digit flashing, the bottom most segment of the bar graph will flash, and the display will read “PCTFS” (percent full scale). Press , ➟ to scroll to a num| ➟ to select that num ber 0-9. Press ber. The left digit will now begin to flash. Press , ➟. to scroll to a | ➟. to select that number 0-9. number.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 14 Changing Batteries: Grip knurled back cover and rotate counterclockwise until the ‘unlock’ icon is in alignment with the arrow – this is on the housing at the base of the pressure connection. WARNING: Misuse may cause injury or damage. Refer to ASME B40.100 Remove cover by pulling straight back and replace AA alkaline batteries accordingly; ensure that the batteries are in the proper polarity position.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 15 Dimensions: Pressure Range: Proof Pressure: Vac-2000psi 200% % of Span 3000-5000psi: 150% 7500-25,000psi: 120% Burst Pressure: Vac-2000psi: 800% % of Span 3000-5000psi: 500% 7500-25,000psi: 300% 69.36mm Ø2.
DG25 I&M Rev. #2_I&M006 10197 7/30/12 11:41 AM Page 16 Ashcroft Inc. 250 East Main Street, Stratford, CT 06614 USA Tel: 203-378-8281, Fax: 203-385-0402 www.ashcroft.com All sales subject to standard terms and conditions of sale. © 2012 Ashcroft Inc.
