Ingenieurbüro CAT M. Zipperer Pulse-free Micrometering Pump HPLH PF
The pump HPLH PF "pulse free" employs two independently controlled pump heads. The result is a pulse-free flow without the need for secondary pulse dampeners.
Unlike syringe pumps the flow is continuous without the need for refill cycles or valve switching. Apart from separate housing chambers for pumps and PC board, this pulse-free pump features the same performance as the standard HPLH pumps. The pump has a user interface for fast and easy numeric input of all relevant parameters e.g. volume, flow-rate, flow direction and time.
When detached from the pump housing it can be used as a remote controller.
HPLH pump:The system consists of an ergonomic pump housing and a detachable programming and operating unit with key-pad and alphanumeric display. All relevant parameters, e.g. volume, flow-rate and flow direction, are set via the key-pad on the control unit, which can be used remotely from the pump. The key-pad has 3 function- and 2 hot-keys, plus an analogue encoder wheel for fast data entry, enabling intuitive adjustment of the set values. The back-lit LCD shows both set and actual volumes, flow-rate, and other functions.
A choice of units of volume, flow-rate and specific weight can be pre-programmed, e.g. µl, ml, mg, g, µl/s, ml/m. The PCON C controller has a RS232 interface as standard (1200-4800,8,N,1) and the analogue and digital I/O ports provide full flexibility.
The optional easy-to-use "LabControl for Windows" software can create multi-step programs transferable to the pump controller to provide various control functions. Program parameters such as flow-rate, volume and time can be entered in dialogue for downloading to the pump. Also, various data processes can be carried out such as evaluation of experimental data and generation of hard-copies.
Connection to the analogue input allows the pre-programmed flow-rate to be overridden by a voltage or current signal. The analogue output (0-10 V and 0-24 mA) can then be used to record and read out the actual flow-rate.
The pump heads are encased in robust stainless steel bodies and are available in 20 µl, 200 µl, 400µl and 1000 µl stroke volumes. They are also available with or without piston rinse port. The models "VCS" have a rinse port integrated into the ceramic cylinder, no piston sealing is necessary.
Pumps with built-in rinse pump for piston rinsing are available.
The pumps have incorporated software programs for many applications:
- STANDARD DISPENSE - dosing of a preset volume
- DILUTOR - diluting of a solution
- PIPETTE - simulation of a pipette
- DELAYED DISPENSE - an electronic dropping funnel
Applications:
- precise dosing of a set volume
- manual dispensing
- time-controlled dispensing
- titrating
- diluting
- regulated drop-dispensing
- sampling with and without an air-segment
