Omega Engineering Blower DVG64 User Manual

DVG64  
Electronic Vacuum Gauge  
INSTRUCTION  
M3805/0502  
SHEET  
DVG64 SPECIFICATIONS  
Display  
Sensor Type  
Updated every second. 1 micron resolution below 200 micron of vacuum  
Thermistor  
Connector Type  
Vacuum Range  
Standard 1/4 inch male flare fitting  
0 - 12,000 Microns (0 - 1,600 Pascals) with vacuum increasing/decreasing indicator when above  
12,000 Microns  
Scale  
Microns, PSI, InHg, milliBars, Pascals, Torr, milliTorr  
Operating Temp. Range 35°F to 125°F ( 2°C to 52°C)  
Overpressure  
Accuracy  
Power Source  
Continuous Usage  
Auto Shut off  
Weight  
300 PSI max (20 Bar)  
+/-10% (0 to 1000 microns)  
9 Volt Alkaline battery (not included)  
Over 35 hours  
After 10 minutes when vacuum reading is above 12,000 Microns (12 Torr)  
6.7 ounces  
Dimensions  
5-1/2"H X 3"W X 1-1/4"D  
DVG64 STEP TABLE  
Vacuum (microns)  
15000 - 8000  
8000 - 5000  
5000 - 2000  
2000 - 1000  
1000 - 500  
500 - 200  
Micron (mTorr) Step  
Pascal Step  
Bar Step  
1
0.5  
0.25  
0.05  
0.01  
0.0005  
0.0001  
InHg Step  
0.05  
PSI Step  
0.02  
0.01  
0.005  
0.001  
0.0002  
0.0001  
0.00002  
1000  
500  
250  
50  
10  
5
100  
50  
25  
5
1
0.5  
0.1  
0.02  
0.01  
0.002  
0.0005  
0.0002  
0.00005  
200 - 0  
1
FEATURES  
• The bar graph disappears if the vacuum does not change for  
about 10 seconds. When the vacuum reading is below 12,000  
Microns (1,600 Pascals), the vacuum in the selected units is  
displayed.  
• Reads vacuum in 7 international units  
• Uses the battery power than other models  
• Cleaning port provides quick cleaning and drying of sensor  
• Uses standard 9V Alkaline battery  
CONNECTING TO THE VACUUM SYSTEM  
The VG64 should only be connected to the vacuum system at  
the vacuum port. The "Auxiliary Port" is primarily for cleaning  
and should normally be closed with the supplied cap.  
• Convenient built-in hanger  
OPERATING CONTROLS  
• Turning the vacuum gauge ON: Press and hold the ON button  
for about 3 seconds, until "POWER UP" appears on the display.  
• Turning the vacuum gauge OFF: Press the OFF button  
To prolong battery life, when vacuum reading is above 12,000  
Microns for about 10 minutes, the unit will automatically turn OFF.  
• Changing the scale: Press the Scale button to change the display  
to the next scale. The scale order is: Microns, PSI, Inches of  
mercury (InHg), milliBars, Pascals, Torr and milliTorr. DVG64 will  
keep the scale settings even if the power is turned OFF.  
CLEANING THE VACUUM SENSOR  
It is recommended that the sensor be cleaned periodically to  
maintain unit accuracy . Oil and other contaminants reduce the  
accuracy of the unit. Follow the instructions below for cleaning.  
• Close the Vacuum port with the supplied cap.  
Open the Auxiliary port.  
• Use an eyedropper to pour about 2 teaspoons of ordinary  
rubbing alcohol into the Auxiliary port.  
• Close the Auxiliary port with the supplied cap. Both the  
Vacuum and Auxiliary ports should now be closed.  
• Shake the DVG64 unit for about 10 seconds. A slight  
movement of the vacuum sensor in the case is normal and  
does not affect the internal connection in any way.  
• Open both the Vacuum and the Auxiliary ports.  
Empty the alcohol, and air dry the sensor.  
UNDERSTANDING THE DISPLAY  
• When the vacuum reading is above 12,000 Microns (1,600  
Pascals), the first line of the display shows "Atm." The second  
line displays a bar graph to indicate the direction in which the  
vacuum is moving. When the bar graph is moving from left to  
right, the pressure is increasing. When the bar graph is moving  
from right to left, the pressure is decreasing. The speed of the  
bar graph indicates how fast the pressure is increasing or  
decreasing. The bar graph indicator may be inaccurate for a few  
seconds after the evacuation of the system has begun.  
• Close both the Vacuum and the Auxiliary ports with the  
supplied caps when the DVG64 is not used. This prevents  
contamination of the sensor.  
 

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