Electronic two-component systems
L&S metering system - the key to perfection
The L&S metering system is an extremely economic and efficient system, which is not only easy to operate but also offers maximum metering accuracy – key factors in guaranteeing safety and reducing costs.
Our 2-component metering system can easily be expanded into a 3-component metering system for processing water and solvent lacquers!
Technical data:
Mixing ratio:
Can be set to any level between 0.5 and 50:1 by simply entering the required ratio on the touch panel.
Protection against unauthorised modification thanks to several password levels which can be allocated to specific access areas such as operation, set-up and service.
Programs:
99 pre-settable programs that include different data can be stored and called up via the program number.
Flushing programs:
5 flushing programs are available and can be programmed according to volume
or time. One of these programs can be allocated per colour program. Each flush
program can control up to 5 flush valves in any given order.
The chosen volume must have flown in order for the system to continue working.
This guarantees a high degree of process safety and avoids unnecessary loss of
flushing agents.
Pressure range:
0.4 - 400 bar, selectable according to given application
Measurement accuracy:
+/- 0,5 %
Output volume:
10 - 5000 ccm / min, selectable according to given application
Usable viscosities:
10 - 180 s/DIN 4 (standard version)
Lacquer and thinner valve:
Pneumatically operated upstroke valve for colour change. Thanks to the system's modular design, additional colours can be easily added. 90 colour values or hardener valves can be operated by the control system. By choosing the desired program number, the correct hardener and colour valve will be opened automatically.
Hardener valve:
This packingless valve is a direct-trigger straight-way valve. No hardening crystallization can occur at this valve.
This system also features an integrated monitoring unit with automatic system shut-down which is activated in the event of an erroneous mixing ratio or if the usable life is exceeded. This monitoring system also includes a pre-warning function which is activated before the usable life runs out, causing new material to be injected into the hose to prevent flushing being carried out unnecessarily.
All material-carrying parts are made of stainless steel.
The metering system comes complete with the following components:
1 Electronic control
- Including all the necessary function keys and monitoring functions
- Siemens S7 Touch Panel for entering all the necessary parameters, such as target and actual mixing ratio, consumption of mother substance, hardener and solvent, flow rate, usable life and program number
- Profi-bus connection
- Error message buffer for 10 plain-text error messages
- In the event of malfunctions, error handling suggestions are made automatically
- The control cabinet is not flame-proof and must be installed outside the lacquer booth. Connected load: 220 V, clean compressed air.
1 Printer
- The interface can also be used as a PC interface
- For documenting the set parameters and consumption values
1 Mixing block unit
- Complete with pneumatic valves
- Special valve for hardening agent
- Simple mixing ratio check using application technology (no gauge valve required)
- 2 mass flow rate counters with flame-proof sensor (no-maintenance)
- Mixer tube with easy to clean stainless steel mixing inserts
- The hardener is injected at short, brief intervals, meaning that no premixing chamber is required and the loss that occurs during colour change is limited to the tube contents only.
- The mixing block can be installed very close to the work station.
1 Safety system
- Monitors the mass flow rate counters
- With flow switch or an electrical pulse activated by atomized air
- To monitor the lacquer flow and error reports with emergency system shut-down