Dwyer P-DCGII Series DCGII Digital Calibration Pressure Gage Instruction Manual
- June 3, 2024
- Dwyer
Table of Contents
Dwyer P-DCGII Series DCGII Digital Calibration Pressure Gage
The Series DCGII Digital Calibration Pressure Gage offers a complete pressure gage with calibration capabilities. With a precise 0.05% full-scale accuracy and large 5 digit resolution, this gage can be used in critical industrial applications where precision is most important. This versatile gage only requires one 9 V battery or power adaptor and can operate up to 5,000 working hours. The Series DCGII 0.05% Digital Pressure Gage can display percent of range, pressure swings or alarm set points. This pressure gage comes complete with ten selectable pressure units, backlight and zeroing capability.
CAUTION
To prevent sensor damage, do not allow the pressure to exceed 120% of full-
scale. The DCGII has 10 different pressure units to switch. However, in order
to avoid the reading overflow or too low to read; only some
of pressure units are selected. To prevent damage, do not use the imposition
of torque between the shell and the pressure quick connect coupling. Do not
connect the communication label with DCGII in a hazardous atmosphere.
OPERATING INSTRUCTIONS
-
Power ON/OFF
-
Analog dial:
Pressing it shortly to select the % indication, swing (fluctuation) and low/ high alarm; Pressing it longer to enter into the menu of adjusting low/high alarm. -
Peak Value:
Pressing it shortly to switch the indication among max Peak, min Peak and quit Peak; Pressing it longer to enter the menu of MENU OPTION -
Backlight:
Pressing it shortly to turn on of turn off the backlight; Pressing it longer to select the backlight display time (10 s, 20 s and 30 s), and loosen it for selection. -
Pressure units:
Pressing it shortly to switch the different pressure units; Pressing it longer to enter into the temperature display menu. -
Zeroing:
Pressing it for zeroing function (The absolute type DCGII should be press longer).
SPECIFICATIONS
Service: Compatible, non-combustible liquids and gases.
Wetted Materials: 316 SS.
Other Materials: Housing: Aluminum alloy; Display: Acrylic MR200;
Buttons: Silicon gel;
Back plate: 304 SS;
Back seal: Oil-proof latex.
Accuracy: 0.05% FS; ±1 least significant digit.
Temperature Accuracy: ±1°C.
Pressure Limits: 120% FS.
Temperature Limits: 14 to 122°F (-10 to 50°C).
Compensated Limits: 32 to 122°F (0 to 50°C).
Process Connection: 1/2˝ male NPT.
Display: 5-digit LCD with blue backlight.
Power Requirements: 9 V alkaline battery, not included, or power adaptor
accessory.
Battery Life: Up to 10,000 hours (600 working hours @ default 3 times/s).
Auto Shut-Off: Backlight: On/off, 10 s, 20 s, 30 s.
Weight: 1.28 lb (0.58 kg).
Agency Approvals: CE.
Data Inputting Introduction
- (←), (→) Move decimal digit left and right
- (↑), (↓) Increase/decrease the pressure value
- (↙) Confirm the inputting data
- (ESC) Cancel the inputting data
Menu Operation Introduction
- (Menu) Pressing it longer to enter the MENU OPTION (calibration/setting)
- (↑), (↓) Move menu upper or down
- (↙) Enter function
- (ESC) Show the previous menu
Screen Area
Battery Icon: The battery icon ( ) is the indication of full battery; The battery icon ( ) is the indication of low battery (<25%). However, the DCGII can continually work till it powers off automatically.
Pressure Unit Area: Total 10 units for selection.
In order to avoid the readings overflow or too low to read, only some of
pressure units are selected.
Calibration Icon: The mark or symbol of operating calibration.
Pressure Peak: The mark or symbol of displaying peak value.
Higher Limit: The mark or symbol of high limit pressure.
Lower Limit: The mark or symbol of lower limit pressure.
Temperature Unit: C, Celsius.
Data Display Area: To display all data or menu.
Analog Dial: Includes 3 types indication: pressure % indication, pressure
swing, overpressure alarm.
The content of the area as below:
- % Indication: The current pressure percentage.
- Pressure Swing: The indication of the pressure fluctuation.
- Overpressure Alarm: The alarm indication for overpressure (less or more the limit).
- Sector Pointer Area: Including 51 segments bars or pointers.
- Scale Bar Graph: It has different definitions under the different operation condition.
- Scale Midpoint: The middle position of Scale bar graph.
Basic Function
Power on/off
Press to turn on or turn off the DCGII. The instrument does a self test and
then shows all applicable data.
Pressure Measure
Press the buttons to enter the pressure measure menu, the displayed content
includes:
- Battery icon
- Pressure measure value
- Pressure units
- Analogue dial indication
Note: Initially, these register values are set to the factory calibration
values. If
the pressure is over 120% × full-scale, the whole screen will flash to alarm.
To
prevent damage of sensor, please r elease the pressure immediately. While the
alarm happened, the measure speed of DCGII automatically changes to 3 × 1 s
for catching up the pressure changing. When the alarm is over, the speed will
go back to normal.
Zeroing
Connect the DCGII with atmosphere via connector coupling. If the current
pressure is in the range of (-1% to +1%) × full-scale, press button for
zeroing step. Figure 4 shows the zeroing sequence of gage pressure.
Pressure Units
Press button to switch different pressure units. The sequence is kPa > kgf/cm2
inH2O > mmH2O > inHg > mmHg > psi > mbar > bar > Mpa.
Peak Detection
-
Record maximum/minimum peak value Press button to record the peak value.
—————-Show the maximum pressure
—————-Show the minimum pressure——– Automatically record the actual pressure value. -
Reset the Peak Values
Press button to cancel the previous peak value and save the current peak value.
Backlight
Press button to power on/off the backlight. Hold button to set auto on/off to
10 s, 20 s and 30 s.
Analogue dial
Includes three indications: % indication, pressure swing and overpressure
alarm Press button to switch each other.
The analogue dial includes:
- Percent pressure (%)
- Pressure swing
- Overpressure alarm
- Sector pointer area
- Scale bar graph
- Scale midpoint
Percent Pressure
% indication: show the current pressure percentage.
Sector pointer area: show the pressure range as sector shape.
Scale bar graph: 0% to 100%, the minimum scale is 2%.
Scale midpoint: point to 50%.
Pressure Swing
Pressure swing icon: The indication of the pressure fluctuation.
Sector pointer area: By using 1 pointer, to show the fluctuation degree of 2
seriate pressure value.
Scale bar graph: Range is (-0.25% to 0.25%) × full-scale, the minimum scale is
0.01% × full-scale.
Scale midpoint: Point to 0.01% x full-scale position.
Overpressure Alarm
Overpressure alarm icon: The indication of the overpressure.
Sector pointer area: By using 2 pointers to show the high/low alarm limit, the
3rd pointer to show the current pressure %.
Scale bar graph: (0% to 100%) × full-scale, minimum scale is 2% × full-scale.
Scale midpoint: Point to 50%.
Set Alarm Limit
The setting process as follows:
-
Press button to display the higher limit ( ) and lower limit ( ) in turn,
please move the cursor left or right direction by pressing the button. -
Press button to adjust the alarm higher limit ( ) or lower limit ( ).
-
After the high limit is adjusted, the menu will automatically enter the lower limit, and then to quit the menu.
The sequence is: High limit > Low limit > Quit. -
The DCGII automatically checks the validity for inputting data. If there is a problem, the setting is not effective.
Temperature Measure
Press button longer to enter the menu of temperature measure, press again to
go back to the pressure measure menu. The temperature measure range is -30°C
to 90°C, the minimum resolution is ±0.1°C.
Menu Option (Calibration/Setting)
Enter the Menu
The password to enter the menu is “211”. The operation steps as follows:
Press longer to enter into the password menu.
Input password “211”.
Note: If the password is wrong, the menu will return to the previous
menu.
Menu Option:
There are 4 options, as shown.
Description:
-
To enter into the calibration menu.
-
The DCGII has been calibrated already.
The DCGII hasn’t been calibrated yet.
Note: If user implements this step, all pressure calibration will be canceled. Please be careful with this option. -
To cancel the previous zeroing operation/
-
To set measure speed (or display update).
Enter/Cancel the Calibration
- To enter the calibration.
- To cancel the calibration.
Cancel the Wrong Zeroing
- To cancel the previous zeroing operation.
Measurement Speed
Select to enter the selectable menu of measure speed, as follows:
- 1–3 (3 x 1 s) 1–2 (2 x 1 s) 1–1 (1 x 1 s) 2–1 (1 x 2 s)
- 3–1 (1 x 3 s) 4–1 (1 x 4 s) 5–1 (1 x 5 s) 6–1 (1 x 6 s)
- 7–1 (1 x 7 s) 8–1 (1 x 8 s) 9–1 (1 x 9 s) 10–1 (1 x 10 s)
- The factory default is 3 x 1 s.
Calibration Function
It is recommended the DCGII is re-calibrated once a year by a skilled
professional. Otherwise, the random operation may be effects the inner
parameter and weaken the measure performance. The DCGII should be pressurized
to full-scale then release all pressure. In order to achieve the best
calibration condition, please do the pre-pressurizing at least three times.
Calibration Conditions
- Environment: Temperature: 20 ± 2°C; Relative humidity: (45 to 75% RH); Atmosphere pressure: (25.4 to 31.3 in Hg).
- Standard pressure source.
Calibration Process
Select Menu to enter the calibration menu.
-
Select and press button to display the calibration value of lower limit, as Figure 5. If you need to modify this calibration value, please input the desired value. Otherwise, please press button to confirm.
-
To calibrate lower limit point: Press button to confirm till the actual pressure value is stable.
-
Display higher limit point: Input the desired data if user needs to modify the calibration value. Otherwise, press button to confirm.
-
To calibrate higher limit point: Press button to confirm until the actual pressure value is stable.
-
The screen returns to the calibration menu, the 2nd option changes to
That shows the calibration is finished and effective.
Cancel Calibration
Select to cancel the calibration, then the screen displays
Replacing the Battery
Please replace with spare battery if the DCGII powered off automatically;
Replace the approved battery.
Approved battery: 9V alkaline
Unscrew the 3 screws and remove the battery cover, install the new battery.
MAINTENANCE/REPAIR
Upon final installation of the Series DCGII, no routine maintenance is required. The Series DCGII is not field serviceable and should be returned if repair is needed. Field repair should not be attempted and may void warranty.
WARRANTY/RETURN
Refer to “Terms and Conditions of Sales” in our catalog and on our website. Contact customer service to receive a Return Goods Authorization number before shipping the product back for repair. Be sure to include a brief description of the problem plus any additional application notes.
DWYER INSTRUMENTS, LLC
P.O. BOX 373 • MICHIGAN CITY, INDIANA 46360, U.S.A.
Phone: 219-879-8000 Fax:
219-872-9057
www.dwyer-inst.com
e-mail: [email protected]