MicroFab Technologies MJ-AB-01 Manual de usuario

MicroFab Technologies, Inc.

www.microfab.com

MJ-AB User’s

Manual

MJ-AB User’s Manual

MicroFab Technologies

1104 Summit Avenue, Suite #110

Plano, Texas 75074

Phone 972.578.8076 • Fax 972.423.2438

Notice:

The information contained in this document is subject to change without notice.

MicroFab makes no warranty of any kind with regard to this material, including but not limited to, the implied

warranties of merchantability and fitness for a particular purpose. MicroFab shall not be liable for errors

contained herein or for incidental or consequential damages in connection with the furnishing, performance, or

use of this material.

Warranty

The MJ-AB jetting device is warranted against defects in material and workmanship for a period of thirty days

from date of shipment. During the warranty period, MicroFab will, at its option, either repair or replace devices

that prove to be defective.

Limitation of Warranty

The foregoing warranty shall not apply to defects resulting from improper or inadequate maintenance by Buyer,

Buyer-supplied software or interfacing, unauthorized modification or misuse, or operation outside of the

environmental specifications for the product. MicroFab makes no claim that the jetting device will perform

with all fluids introduced to the device, or that the device will work at all frequencies and operating parameters

selected by the Buyer.

MicroFab Technologies

1104 Summit Avenue, Suite #110

Plano, Texas 75074

Phone 972.578.8076 • Fax 972.423.2438

Equipment Series: MJ-AB Jetting Device

Mfg Date: Indicated by device Serial No.

General Safety Considerations

Warning The jetting device itself presents no general chemical hazard. However, safety measures

should be followed as outlined in the MSDS for fluids to be dispensed.

Warning If this product is not used as specified, the protection provided by the equipment could

be impaired. This product must be used in a normal condition only (in which all means

for protection are intact).

Table of Contents

SECTION 1 - GENERAL INFORMATION 1

Introduction ...............................................................................1

Technical Specification.............................................................1

Facility Requirements................................................................2

Pneumatics ..................................................................................... 2

Electrical......................................................................................... 3

SECTION 2 - EQUIPMENT RATINGS 5

Supply Voltage...........................................................................5

Range of environmental conditions...........................................5

EQUIPMENT INSTALLATION 5

Unpacking and Inspection.........................................................5

Assembly....................................................................................6

Instructions for Protective Earthing..........................................6

Ventilation .................................................................................6

EQUIPMENT OPERATION 7

Hardware Overview ...................................................................7

Principles of Operation ..............................................................8

Initializing Jetting Hardware.....................................................8

Setup steps: .................................................................................. 10

Notes: ............................................................................................ 11

SUPPLEMENTAL PARTS 12

FACTORY SUPPORT 13

MJ-AB USER’S MANUAL

Section 1 - General Information

Introduction

MicroFab’s MJ-AB jetting device has been developed to dispense single drops of

solvents, water-based fluids, and inks. With proper fluid preparation and device

maintenance, the jetting device will provide reliable delivery of fluid micro-drops.

Figure 1 - MJ-AB-01 Jetting Device

Technical Specification

The MJ-AB jetting device design has successfully jetted a wide variety of fluids.

Performance of the jetting device is closely tied to the characteristics of the fluid in use.

Typical fluids successfully jetted in this device have viscosities less than 40 centipoise

and surface tensions in the range of 0.02-0.07 N/m. Fluids with properties outside

these limits can be jetted if changes to the properties can be achieved with solvents or

changes in temperature.

The jetting device can be provided with orifice sizes ranging from 30-60 microns.

Depending on the operating parameters and the fluid, these devices can produce drops

ranging from 50-200 picoliters in volume.

Operating Range

 Operating temperature between 20 and 150°C.

Physical Dimensions

 Physical dimensions are shown in Figure 2.

MJ-AB USER’S MANUAL

Figure 2 - Device Dimensions

Power Requirements

 Required power - 115VAC/2A max; 50/60 Hz (for JetDrive electronics;

JetDrive can also be configured for 240V installation).

Facility Requirements

The jetting device, by itself, requires no connection to lab or machine power.

However, the support equipment for the jet does require some typical lab support.

Figure 3 - Fluid & Electrical

Electrical signa

Fluid Inlet

Pneumatics

Depending on the viscosity and contact angle of the fluid, the jetting device can require

either positive or negative pressure at the fluid inlet. There are two typical ways to

provide this backpressure. First, the backpressure can be provided by either a positive

MJ-AB USER’S MANUAL

or negative pressure head provided by positioning the fluid reservoir. If the reservoir is

mounted a few inches above the jetting device, a constant positive pressure will be

provided. If it is mounted a few inches below, the orifice will realize a negative

pressure.

The second approach is to regulate existing compressed air or vacuum sources. By

inserting a pressure or vacuum regulator between the source and the jetting device, the

pressure can be adjusted. MicroFab provides such capability in it’s CT-PT-01

pneumatics panel. In this case, the lab facilities must provide a +15 PSIG source,

either through an air compressor or through a compressed gas tank. For negative

pressure, the regulator should be connected to a vacuum source of –24 in. Hg.

The two installations are shown side by side in Figure 4.

Figure 4 - Back Pressure Control

Pneumatics Panel

Reservoir

Jetting Device

Electrical

In order to generate drops, a pulse is sent to the PZT surrounding the glass capillary.

The shape of this waveform is shown in Figure 5. The minimum to maximum range

Figure 5 - Waveform Definitio

MJ-AB USER’S MANUAL

for the jetting device is listed in Table 1.

Table 1 - Voltage Pulse Parameters

Voltage level 1 0 to 100 V

Voltage level 2 -100 to 0 V

trise 1 – 300 µs

tdwell 3 – 800 µs

tfall 1 – 300 µs

tech 3 – 800 µs

tfris 1 – 300 µs

Frequency 1 Hz to 20 kHz

MicroFab offers a controller (part no. CT-M3-01) that has been designed to meet or

exceed these parameters. However the same function can be accomplished by

properly implementing a waveform generator and a voltage amplifier from qualified

manufacturers. It is important in either arrangement, however, to make sure that the

output connector from the voltage source mates with the connector provided on the

jetting device.

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