Post on 13-Apr-2017
Review of DigiVac Products, Applications and Industries,
DigiVac overview, Vacuum 101, 102 and demonstrations
Presentation Link Summary1. Product Overview
2. Calibration Demonstration
3. Conversion Table
4. Air pressure vs. Altitude
5. 450 Vacuum regulation with balloons
6. Dew Point humidity vs. temperature graph
7. measure with DigiVac in low, medium and high vacuum
8. low, medium and high vacuum defined
9. Better results with DigiVac: competition replacement and application
10. The questions to ask a customer to get the right instrument
11. Application: Distillation
12. Definition: Schlenk Lines
13. Gauges for Freezedrying
14. Vacuum Ramp Rate for Industrial Control
15. Application: Evacuate then Purge
16. Pipe Thread in vacuum best practices
17. KF in vacuum best practices
18. Cleaning Thermocouple vacuum gauge tubes
19. Test pumps with a rubber stopper demonstraton
20. Bullseye Precision GaugeTM
21. DigiVac Model 450
22. DigiVac Model StrataVac VLC
23. Video of StrataVac VLC: adding Value to Freezedryer installations through upstream vacuum control
24. DigiVac Model 200
25. DigiVac 801W
26. DigiVac Model 100H
27. Multi Sensor Gauge: 276
28. Vac|MAC Industrial grade Torr display and relay control
29. DIGIVAC Design
Agenda
• DigiVac Overview
• Calibration Demonstration
• Vacuum 101, Demo, 102
• When and why to use vacuum gauges
• Using Bullseye to test a vacuum pump (cork + KF25)
• Best Practices using a gauge an creating leak free connections
• Selling Bullseye, Bluetooth and StrataVac
• Other offers
Who is DigiVac?A company:
•A core group of brilliant and deeply committed people
•An engineering company that makes products
•Products that have a cult like following in the field
Our commitment is to constantly refine our products based on technological and manufacturing advantages, in order to deliver a higher quality product while maintaining value to
our customer.
Engineering Excellence
• Over 30 Years of Vacuum Engineering Excellence
• Design team has 60 years of combined vacuum and refrigeration engineering experience
• Team has a passion for creating new products, and making them rock solid
• Hardware and software engineers on staff for product creation, sustaining engineering and R&D.
Quality Guaranteed
• All products backed with a 1-year warranty
• Company maintains a redundant supply chain with domestically sourced parts
• Progress towards Lean Manufacturing based on ISO
• All devices assembled by DigiVac Employees in New Jersey through formal build specifications with quality checks through build process
Only Manufacturer that calibrates EVERY device under real vacuum against a NIST standard—testing the devices the way they’ll be used in the real world
Market Breadth
HVAC Repair Research
Manufacturing Operations
Process Control
Power - Transformer
Cryogenic Service
Altitude Simulation
Generator Maintenance
Vacuum 101with vacuum aficionado Tom
Bassi!
Text and Method borrowed generously from Don Mclure and John F. O’Hanlon
What is Air?
• Air is composed of molecules in a gaseous state
• Air is composed of:• 78% Nitrogen
• 21% Oxygen
• .9% Argon
• .03% CO2
• About 1% H2O
Does Air have weight?
• Does air push up on you?
• How much is the air pushing? • 14.7 psi (pounds per sq inch)
• 1.03 kg per sq cm
• 1.01 bar
• 101 kPa = 760Torr
A short calculation
• A gallon of water weighs 8.35 pounds.
• 1 square inch has 14.7 pounds on it.
• 14.7 PSI (pounds per square inch) x 8.5in x 11in =1375 pounds
• 1.033 kg/cm2 x 8.5 x 11 x (2.54 cm/in)2 =
623 kg
• How can I hold this paper?
How can you hold the paper
• Air• Does air push down on you?
• Does it push up on you?
• Does it push sideways?
• Pascal’s principle• A fluid (liquid or gas) pushes equally in all directions.
Vacuum Definition:
Vacuum is any volumewhich is at a lower pressure
than the atmosphere.
Vacuum•First activity on your own – your first breath•Drinking through a straw•Water pumps•Atmospheric pressure = 14.7 psi (lbs/in2)
= 1.03 kg/cm2= 101 kPa = 1013 hPa= 760 mm Hg= 30 inches Hg= 33.9 feet of water
What do units of length have to do with vacuum?
The Torricelli Barometer
• As you decrease pressure (apply a vacuum) the mercury level goes down.
• As you increase pressure, mercury level goes up 760 to 770 for example
• This is how we get a linear measurement from PSI.
Hiking up a mountain…
Another Example..
A bit about Molecules
• More molecules, more pressure
• Less molecules, less pressure
A bit about diffusion
• Molecules want to spread out, they want the most space possible
• Diffusion is when molecules equally distribute themselves in a vessel
A lot of molecules
• The more molecules, the greater the heat transfer
• The shorter distance the molecule has to travel before it hits another
• Mechanical (transfer) pumps work well here
Rotary Vane Pump
• This pump physically moves air molecules like a shovel moves sand or a water pump moves water….
Very few molecules…
• How can you move sand if there isn’t much there?
• Mean free path greater
• Enter, Diffusion pump
Diffusion Pump
• Air molecules diffuse towards the big opening of a diffusion pump.
More on the diffusion pump
• The diffusion pump is like a big molecular bat!
Turbo: Replace stream of oil with a jet engine
What does all this stuff have to do with selling gauges?
Where we fit…
Vacuum 101 Summary
• Air is composed of molecules
• Less Pressure, more vacuum
• More vacuum, less pressure, less molecules
• The number of molecules determine how we pump, and how we measure pressure.
• Next.. Water and Vacuum.
Vacuum 102: water and vacuum
What is Vapor Pressure?
• reducing the pressure reduces the boiling point
• boiling point definition: temperature when vapor pressure = atmospheric pressure
Examples of Vapor Pressure
• Water boils at 100°C, 212°F at sea level
• Water boils at 94°C in Denver, 1 mile above sea level (less pressure)
Humidity & Dew Point
• Dew point is the temperature at which water vapor saturates from an air mass into liquid or solid usually forming rain, snow, frost or dew.
• Dew point normally occurs when a mass of air has a relative humidity of 100%.
• If the dew point is below freezing, it is referred to as the frost point.
Dew Point question
• If the Dew point is 25°C, and the temperature falls to 22°C, will it rain?
More Water in the Summer
• Higher temperature means the air can carry more water
• Generally more humidity in the summer as well..
ice water water steam0 °C32 °F
0 °C32 °F
100 °C212 °F
100 °C212 °F
80 cal/g
100 cal/g 540 cal/g
1 gram of water = 1 cm3 as liquid water= 1,500 cm3 of steam at 100 °C= 10,000,000 liters at 10-4 torr
at 1.3x10-4 mbar
The many states of water
1 cm cube
Question…
• When is it raining in our manifold?
• Hint: Room temperature between 20°C to 25°C
Why does it take so long to pump down?
• Volume gas is easy to remove
• Surface Gas is hard to remove
• Surface Gas is almost always water vapor
• Takes a lot of energy to desorb H20 from manifold walls
So why does it take so long to pump down the manifold in the
Summer: The trifecta
• More Humidity
• Warmer temperatures mean more water
• Inside of manifold always soaking in water overnight and when cycling• The very high energy required to desorb water molecules from
the inside surface of the manifold
• High energy is transferred through vacuum pumping over time
How do we improve cycle time?
• Back fill with Nitrogen
• Don’t allow air in manifold especially in humid days
Why do we care?
• Our customers have the same challenge with water and pump down times
• Manifold cycle time causes larger calibration times and makes us less profitable
Conclusion: Vacuum 102
• There is more water vapor around in the summer
• Water Vapor slows down pump downs
• It is raining in our manifold
• Desorption of water molecules takes time and energy
Who needs a vacuum gauge?
• Do you need a speedometer? Not really but it’s kinda useful
• If a $20 dial gauge works, great!
• If they need to measure +/- 2 Torr or better reading from 1-760 Torr, they need us
• If you need to measure medium or high vacuum at all, they need DigiVac
Some Application Examples
• Distillation• Schlenk Lines• Freezedrying• Industrial Control
Distillation Application—FeaturingBullseye Precision Gauge or 215V
• One of the primary purposes of using vacuum in distillations is to lower the temperature required to achieve a boiling point. Compounds with a boiling point of greater than 150 C will likely need vacuum distillation. Additionally, using higher temperatures for distillations could cause target products to thermally breakdown
• The target product in a distillation could either be the remaining product, the distilled product or a purified product. The vacuum pressure associated with a distillation depends on the product to be distilled
• Relevant gauges for application: Model 450 Vacuum Regulator, Digital Torr Manometer, 215V, Bullseye Precision Gauge™
Some people might actually use a mercury manometer for distillations. This isn’t ideal as their is a chance of a contamination of your system to the mercury,
or worse from the mercury to the distillation set up. A DigiVac manufactured gauge can remain connected the whole time
and will not contaminate your system
Schlenk Lines
The most common Application: Evacuate then Purge
United Ramp
DigiVac Vacuum Ramp Application Note
Best Practices for Thermocouples and Leak Free
connections
• Pipe Thread in vacuum best practices• KF in vacuum best practices•Cleaning Thermocouple vacuum gauge tubes
Bullseye Precision GaugeTM
• This one product crosses markets : Lab, MFG
• Rugged field analysis gauge
• Wide range and high accuracy
• Only portable vacuum gauge on the market that offers:
• More than a number—graphics that literally paint the picture of current conditions as well as trends over time
• Unmatched range of measuring options which spans industries: Torr, microns, millitorr, mmHg, inches of Hg, mbar, inches of water, kPa, Pa, PSIA, millimeters of water
• Bluetooth connection to cell phone app
Diverse Gauge Markets
Industry DigiVac Fit
Power
Cryogenic
HVAC
Field Service Gauge
Laboratory Gauge
Only Portable Vacuum on Market that gives you Vacuum Analytics!!!!!!!
A HUGE asset to: Pump troubleshooting
Transformer Installation and Reconditioning
High Power Conduit installation and Repair
DigiVac Model 450● Digital display● Controls from 2-760 Torr● Isolated transducer● Distillation● Altitude simulation
Vacuum Level Control
DigiVac Model StrataVac VLC● Controls from 30 millitorr – 2 Torr● Varian 531● Short protect P/S 110/220● 0-5, 0-2 vdc analog out● Panel or bench top● 2 SPDT controls● RS232, software
DigiVac ReAct Browser Software
Features & Benefits● Comes free with Ethernet● Graphs Vacuum and set points● Logs to local File● Can set vacuum bounds and
adjust time duration
DigiVac Multi-ReAct Software
Features & Benefits● See up to nine devices with features set that builds on ReAct ● PC Java application that displays reading – no web browser● Set variables, change set point from one console● Connects via RS232 or Ethernet● Plots data to local file
Our best Seller….
DigiVac Model 200● Digital display● Ethernet Capable● Varian 531● Short protect P/S 110/220● 0-5V analog output● Panel or bench top● 2 SPDT controls● RS232, software
Get away from the dial
DigiVac 801W, 810-2 or 200P● Digital display● Varian 531 or DV-6M 1-1999mt● Short protect P/S 110/220● 0-5, 0-2 vdc analog out● Panel or bench top● 2 SPDT controls● RS232, software
Battery Operated Instruments
DigiVac Model 100V● Varian Tube - .001-760 Torr● Ideal for testing Vac Pump
DigiVac Model 100H● Hastings Tube 1-1999 microns● Used in Cryogenic for verifying Vac
Shared Features● “D” battery● Switchable units● Ideal for backup gauge or mobile applications● Optional carrying case
Multi Sensor Gauge: 276
• Combines a Thermocouple and a Piezoresistive sensor
• Reads better than +/- 10% through range 1x10-3 ~ 1000T
• Excellent for SF6 or Helium• Combines best selling model 200 and
capacitance manometer killer 2L760
DIGIVAC Design
• Digivac can handle electronic control needs from requirements through design and prototype to full scale manufacture
• Deep roots in vacuum and refrigeration science
Cooling Unit Controller
DC Motor Controller
Delivery
• Capable of drop shipping customer supplied packing slip
• Just in time manufacturing that can deliver 100 gauges a day
• Resource management—technical staff can be ramped up to deliver even higher quantities based on demand needs
Potential Products For Your Wheelhouse