DigiVac SNAP Kurzanleitung
SNAP Vacuum Controller
Operational Manual
Vacuum Control and Pressure Regulation in One
©
2021 DigiVac Company®Allrights reserved. | 1020 Campus Drive, Morganville,NJ 07751 | (732) 765-0900
Section 1. Description and Principles of Operation
Section 2. Unpacking and Inspecting
Section 3. Installation
Section 4. Controlling with theSNAP Vacuum Controller
Watch a video of the feature-set here.
RECIPE CONTROL
SET POINT CONTROL
CLOSE CONTROL MODE (Isolate)
FULL VAC
VENT
Controlling at a Set-Point
Setting PID Variables to Optimize Performance
Section 5. Troubleshooting
Section 6. Servicing and Maintenance
Section 7. Specifications
Section 8. Understanding Torr
Section 9. Terms of Use
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YOU MUST READ THIS MANUAL BEFORE USE
March 2021
TABLE OF CONTENTS
Largest flow paths available to ensure maximum flow for faster evaporation
Maximize throughput and pump down speed with a 20 mm vacuum path
NIMBLE-MAXIMIZE THROUGHPUT & PUMPDOWN SPEED
The SNAP Vacuum Controller combines precise vacuum control with pressure regulation
all in one without sacrificing flow rate. Patent pending integrated valve that delivers
superior flow rate but with precise proportional control for the rough vacuum range.
Easy set-up and push button process control: Vent, Close Valve, Full Vac (Open)
Enables use of reliable and long lasting rotary vane oil pumps & dry scroll pumps in
applications where diaphragm pumps were previously required
Keeps vacuum pumps near their base pressure resulting in greater longevity
SIMPLE
Vent your vacuum chamber or equalize your system with the touch of a button
instead of pulling hoses or turning valves
Treat material in chamber more gently by implementing kinder ramp rate controls
Vacuum Controller with onboard ramp rate recipe control. Program up to 10 recipes
based on time and pressure setpoints.
Dashboard push button control allows you to automatically pump down, vent, or
isolate your system with a push of a button
Ideal for automating and simplifying vacuum chamber pressure control.
AUTOMATIC PROCESS CONTROLLER
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Mission control at your
fingertips with the
SNAP (Simple,
Nimble, Automatic
Process Controller)
Section 1. Description and Principles of Operation
©
2021 DigiVac Company®Allrights reserved. | 1020 Campus Drive, Morganville,NJ 07751 | (732) 765-0900
KF25 vacuum ports for vacuum connection, vent port hose barb, 7” touch screen
with knob control, USB output, analog in/out communication, and external sensor
upgradability
Power supply
Quick start guide
(optional) 10 Torr Capacitance Manometer
(optional) Digivac Quantum DPP Sensor
After the instrument is received, it should be carefully unpacked and inspected for
damage during shipment and to confirm that all components are present. The warranty
pertains only to the instrument and does not cover losses in shipping.
Each SNAP comes with:
Easy-to-use precise, automated control with realtime graphing of pressure levels,
numerical readings, and one-touch start, stop and release buttons
Innovative valve control performs both proportional throttle vacuum and vent control
The integrated vent design allows you to quickly vent to atmosphere to stop
“bumping” during processing or when the process is complete
PRECISION CONTROL & INTUITIVE DESIGN
Section 2. Unpacking and Inspecting
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©
2021 DigiVac Company®Allrights reserved. | 1020 Campus Drive, Morganville,NJ 07751 | (732) 765-0900
Now, it’s time to connect the SNAP Vacuum Controller: The only required connections
for operation are power, a vacuum pump, and a vacuum system.
1.Mounting: Find a suitable location for
mounting the SNAP. In its standard,
landscape mode, SNAP sits on rubber feet.
It should be put in a place that easily
allows access to the touch screen, but has
minimal process vibration. A mounting
bracket or pole clamp can be added-on to
allow for direct mounting to certain
vacuum ovens or rotovaps. These options
are best used in SNAP’s portrait mode.
2.Connect to Vacuum Pump: Connect your
vacuum pump to the KF25 input labeled
“Vacuum Pump”.
3.Connect to Vacuum System: Connect
your vacuum system to the KF25 vacuum
output labeled “System”.
4.Vent Port (optional): If you would like to use a gas other than ambient air to vent
your system, connect that vent gas to the hose barb.. Many customers may
choose to vent with dry Nitrogen.
5.Data Capture (optional): Attach USB connection for data to a PC or other system.
6.Analog In/Out (optional): Connect to a PLC and use specified voltages to control.
7.External Sensor (optional): Connect an external sensor(e.g. 10 Torr Capacitance
Manometer for improved accuracy
8.Power: Plug in to Power and turn on
Hooking the SNAP up to a system is a simple process:
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Section 3. Installation
©
2021 DigiVac Company®Allrights reserved. | 1020 Campus Drive, Morganville,NJ 07751 | (732) 765-0900
Mount the sensor closest to the location where you want to control. The reading you
see on the screen will show you the reading of the external sensor. Operate the unit
according to the directions in the next section just as you would with the internal
sensor.
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©
2021 DigiVac Company®Allrights reserved. | 1020 Campus Drive, Morganville,NJ 07751 | (732) 765-0900
Installation note for Optional External Sensor:
Control Set Options:
1.Recipe Control
2.Set-Point Control
3.Vent to ATM (Bleed Control) or ability to vent with an inert gas
4.Close all valves and isolate the system
5.Full Vacuum
After installation, the unit is ready for immediate operation. This section will go over
how to control channels with your SNAP, focusing on the different display buttons.
SNAP is feature-rich with multiple control options. It is the 1st touch screen vacuum
controller with onboard recipes.
Watch a video of the feature-set here.
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Section 4. Controlling with the SNAP
©
2021 DigiVac Company®Allrights reserved. | 1020 Campus Drive, Morganville,NJ 07751 | (732) 765-0900
This mode is a highly innovative feature that allows users to set recipes based on their
desired process parameters.
Watch this video on how to select recipes easily here
This mode fully closes the vent port and fully opens the vacuum port, allowing rapid
and complete pumpdown of the system.
This mode uses both vacuum pump suction and ambient air/supplied gas pressure to
control the system’s vacuum level to the chosen set point (desired pressure level).
This mode isolates the system by fully closing both the vacuum and the vent ports.
The system is isolated from both Atmosphere (ATM) and the vacuum pump with this
mode activated.
This mode fully closes the vacuum port and fully opens the vent port, allowing for rapid
and complete ventilation of the system to Atmosphere (ATM). This mode is very helpful
to stop bumping in a rotary evaporator or when your process is complete.
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VENT
FULL VAC
CLOSE (Isolate)
RECIPE CONTROL
SET POINT CONTROL
©
2021 DigiVac Company®Allrights reserved. | 1020 Campus Drive, Morganville,NJ 07751 | (732) 765-0900
Click on S - xxx button
Click on PID
To put in a different number, input that number in the dialogue box
Touch the value box of the variable you want to change (P, I, D)
Click OK
Your new PID variable is set.
SNAP ships with PID variables that are optimized for average vacuum hose lengths for
20 and 50 liter vessels. The SNAP is capable of controlling much smaller and larger
vessels, but may require some PID tuning to optimize the control.
For more background on PID check out this white paper Here.
You can access PID variables from the Setpoint (S - xxx) button when in Setpoint mode.
To adjust:
1.**Note: You can either control in setpoint mode or in one of the modes outlined on pg. 8
The button highlighted on the screen is the mode you are in; Ex. you can set the mode to
Setpoint and push the dial in to activate the icon for setting the set point
2. Once activated the Icon is a button that is located below the vacuum reading.
It says “S-XX” and then lists the current set point.
3.You can adjust it how you’d like. Turn the Dial to the desired setpoint, then Push the
Dial in, to save the set-point or press the SAVE button on the screen. When you return
back to the home screen you will see the updated setpoint on the screen.
4.You are now ready to begin controlling vacuum
Controlling at a Setpoint
Setting PID Variables to Optimize Performance
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©
2021 DigiVac Company®Allrights reserved. | 1020 Campus Drive, Morganville,NJ 07751 | (732) 765-0900
Play shall run/resume the selected recipe
Pause shall pause the selected recipe and maintain the current pressure level. When
play is then pressed, the selected recipe will pick up from it left off and resume
Stop shall end the selected recipe, reset the clock, and maintain the current pressure
level. When play is then pressed, the selected recipe will start at step 1
If during a process, set point, recipe, vent, close, or full vac is pressed, the current
recipe will be paused. Recipes operate in a radio button configuration – when a
mode is selected, all others modes are not active
To control in Recipe mode, press the Recipe button.
Recipe quick keys:
Play, Pause and Stop are only associated with recipes (i.e. only work in recipe mode)
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©
2021 DigiVac Company®Allrights reserved. | 1020 Campus Drive, Morganville,NJ 07751 | (732) 765-0900
Using Recipe Mode
**Note: In general, if you seem to be hunting around the set point, but never hitting it,
reduce P. If you can’t seem to ever get to your set point, increase P. There are
dissertations in the art of tuning PID, so feel free to leverage them, or call us to help.
Creating Custom Recipes (up to 10)
1.From the home screen, press the GEAR ICON
2.Select the recipe number to edit, then press EDIT RECIPE.
3.Customize the selected recipe by TIME (in minutes) and PRESSURE (in Torr)and
whether you want to RAMP or HOLD
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