BETA 10 Plus Gradient Pump
With a flow rate of 0.01 – 10 ml/min and a pressure limit of 40 MPa, this pump is suited for analytical applications in liquid chromatography. It is designed with main and auxiliary pump heads connected in series with a piston diameter of 1/8”. It has a high-performance processor unit and a three-way gradient valve. This allows the pumps to be used for creating a low-pressure gradient, i.e., gradual changes of mobile phase composition by mixing up to three liquids at the pump’s entry. It is also possible to predefine the percentage of composition when using the pump in isocratic mode. The gradient course can be defined either through the keypad or uploaded from a computer.
There are new improvements in piston suspension which has new plastic slide bearing and exchange is now easier. Bypass valve has been improved also and is now easier to operate it.
The pump is equipped with electronic fuses which stop the flow when preset either maximum or minimum operating pressure limits are exceeded.
When is necessary it is possible to use back washing of pistons (e.g. when using buffered mobile phases).
Technical parameters:
| Flow range | 0,01 – 10 ml/min |
| Method of setting | continuously in 0.01 ml/min steps |
| Maximum operation pressure | 40 MPa |
| Accuracy of selected flow (1 ml/min, 12MPa, H2O) | ± 2% |
| Accuracy of pressure measurement | ± 2% |
| Adjustable lower pressure limit | 0 – 39,5 MPa (in 0.1 MPa steps) |
| Adjustable upper pressure limit | 0 – 40 MPa (in 0.1 MPa steps) |
| Pumping system | two plungers dia. 1/8” connected in series |
| Materials of pump heads | stainless steel |
| Number of valves | 3 (A, B and C) |
| Maximum flow in gradient mode | 3 ml/min |
| Maximum number of gradient sections | 50 |
| Setting of concentrations of components B and C, component A is automatically adjusted to 100% | 0 – 100% in 1% steps |
| Duration of a single gradient section | 1 s to 999 min 59 s |
| Maximum number of stored files (programs) | 100 |
| Data input | 16 element keyboard |
| Display | 40 characters in 2 rows |
| Power supply | 100, 115 and 230 V, 50/60Hz |
| Power input | 50 VA |
| Dimensions (w x h x d) | 220 x 170 x 450 mm |
| Weight | 9kg |
