Automate ValveLink 8 Manual del usuario - Página 4

Navegue en línea o descargue pdf Manual del usuario para Enrutador de red Automate ValveLink 8. Automate ValveLink 8 16 páginas.

Imprimir página

Introduction

FOR RESEARCH USE ONLY

The ValveLink is designed for solution-switching use in research ap-

plications ONLY. AutoMate Scientifi c, Inc. cannot be responsible for

injury or death resulting from medical or pharmacological use.

Hardware Overview

The ValveLink

8 and 16 are simple digital/manual valve con trol lers

™

de signed for use with research automation software. Valves can

be controlled by digital TTL* signals from any I/O card or device.

Eight pushbuttons allow manual user control with eight bi-colored

LED indicators (16 LED's for ValveLink16's plus a 'bank' se lec tor

switch described later). A serial (RS-232) port is pro vid ed for fur-

ther valve control by serial devices. All three input sources (digital,

serial, and push buttons) are si mul ta neous ly active, and the LED's

constantly display the current valve status.

The ValveLink is designed to drive 12 volt DC solenoid valves

plugged into RCA jacks on the back of the box. Why not connect

valves directly to your computer? Several reasons:

1) Most computer interfaces provide +5V signals – not strong

enough to drive most valves (6 to 12V DC and up).

2) Computer interface signals are often too noisy for elec tro -

phys i ol o gy amplifi cation. The ValveLink is designed with

special low noise circuitry to minimize interference with

high-gain amplifi cation.

3) Finally, many solenoid valves are designed to be opened

with a short, full-voltage pulse, then "held-in" with a lower

voltage to keep the valves from heating. The ValveLink au-

tomatically provides dual-voltage hold-in.

* TTL stands for Transistor-Transistor Logic, a +5/0 volt stan dard for representing

on and off – used by the ValveLink for computer valve control.

ValveLink Laboratory Applications

Perfusion

A ValveLink can be programmed to precisely switch so lu tions

perfusing over biological samples for physiological re search. The

ValveLink's circuitry is de signed to open valves with low noise for

electrophysiological amplifi cation. Several features, 'Modes' have

been built into the ValveLink for advanced perfusion use.

Washing

Combined with an AutoMate ported washing tray, the ValveLink

can automate washing of electrophoresis gels and blots, and devel-

oping of x-ray or photographic fi lm or prints. You have complete

control over which washing steps of your Western, North ern, South-

ern, Coomassie Blue and Silver staining runs are au to mat ed and

which are han dled con ven tion al ly. Un at tend ed washing can save a

busy lab countless hours of tedious monitoring.

Liquid Chromatography

A ValveLink can be easily programmed to automate solution se-

lection in multi-step ion exchange, gel fi ltration or affi nity chro-

ma tog ra phy runs with excellent reproducibility. The ValveLink

is especially useful in preparative work when a protocol has been

established and programmed to repetitively isolate your valuable

molecule.

Luer lock Valves and Syringe Reservoirs

AutoMate also offers

valves with luer lock fi t-

tings for direct connection

of syringes. This method

eliminates wasted solu-

tion in tubing between

the reservoirs and valves.

Small 2-way stopcocks are

included when this option

is ordered.