User guide

Needle Sensor 11-1

11 Needle Sensor

The Needle Sensor can be installed at various locations around the dispensing area, depending on the

model of dispensing system.

Overview

The C-721 is equipped with the NSZ Series Needle Sensor. The NSZ Needle Sensor includes an

accessory Tactile Sensor used to calculate the Z-height of the needle tip during the machine offsets

routine in Fluidmove for Windows NT (FmNT) (see Figures 11-1 and 11-2).

Item Description

1 Calibration Substrate

2 LED Indicator

3 Tactile Sensor

4 Needle Slot

Figure 11-1 NSZ Series Needle Sensor

The NSZ Series Needle Sensor includes a Tactile Sensor, which is used to calculate the Z-height of the

needle tip during the

Valve Offsets routine in FmNT.

Both types of Needle Sensors use a fiber optic LED infrared sensor to locate and record the XYZ location

of the needle. The Needle Sensor is also used to determine the XYZ location of the Height Sensor Probe

in relation to the needle. These locations are sent to the dispensing software which uses them during the

programming process and during production runs.

The Needle Sensor lets you change needles and continue production without reprogramming the

dispensing system. It can automatically compensate for XYZ changes in needle location due to a needle

change or a bent needle and between production runs, thus minimizing operator error and eliminating

wasted time spent manually adjusting the needle.

NOTE The needle sensor does not compensate for XYZ location changes in parts, substrates,

tooling, or fixtures.