Kistler 6190CA Owner's manual

Brand: Kistler

Model: 6190CA

Category: Measuring & layout tools

Type: Owner's manual

This manual is also suitable for

Important Installation Notes

for Mold Cavity Pressure Sensors

Types 6152, 6153, 6157, 6158, 6159, 6167

6169, 6175, 6182, 6183, 6190

Introduction

The following questions often come up during the installa-

tion of mold cavity pressure sensors:

•Is the sensor functioning correctly?

•Are the measured values correct?

•Pressure differences were measured in the 4 cavities. Do

these differences actually exist or has a measuring error

occured?

A precondition for answering these questions is correct

sensor installation. Every sensor is calibrated before delive-

ry. The calibration data can be obtained from the calibra-

tion sheet supplied. If the sensor is poorly installed (jam-

med or twisted i.e. under force shunt loading), this will

have a negative influence on its measuring accuracy. The

effect of inadequate sensor installation will be particularly

significant in applications where there are several sensors in

one mold (e.g. multi-cavities).

Single-Wire Technology

In addition to the «conventional cable technique» (coaxial

cable with fixed lengths and fitted connectors), there is

now also the single wire technique, which has the follo-

wing significant advantages:

•Mold machining more cost-effective

•Cables can be installed in bores without the need to

machine channels

•Simple installation by self-fitting connectors

•Cables more flexibly installed as a result of their smaller

diameter

•Cables can be shortened to the actual length required

• Compatible with existing extension cables

•In the event of a cable breakage, you can carry out

repairs yourself

•Smaller cable dimensions result in big advantages in

multi-cavity applications

•Possibility of direct connection of the sensor cable to

multi-channel amplifiers using cut-and-clamp technique

The following notes should provide short and comprehen-

sible information on how to prevent installation errors (and

resulting faulty measurements).

Illustration of a Sensor Installation

It is essential to use the dimensions in the data sheet or

operating instructions for the mounting bore. Do not try to

ascertain the dimensions yourself by measuring the sensor.

•The contact surface must be flat and at right angles to

the bore (optimum sensor contact surface).

•The bore must on no account be tapered. Tapered

bores must be further machined using a lapping tool and

lapping paste.

•Each time the contact surface of the bore /is further

machined, the 60° chamfer must be checked and

re-machined as necessary.

•The length of the bore must be matched to the sen-

sor, so that the front of the sensor comes flush with the

mold cavity wall.

•The sensor must always be center aligned through the

bore and on no account through the flange (threaded

bore for the mounting nut must be concentric).

•The bore outlet at the cavity wall must have sharp

edges (least possible impression on the molding).

After manufacturing the bore, it should be checked

against the above mentioned points. (e.g. using gages,

lapping tool, Kistler accessories kit Type 1300A83).

During installation, the sensor should be inserted into

the bore using an insertion and extraction tool, which

should then be used to extract it.

Secure the sensor by tightening the mounting nut with

a socket wrench.

The connector can be fitted to the mold with a mounting

plate or a clamping piece (countersunk). When the cable is

not connected, the protective cover should be fitted over

the connector.

The sensor identification plate included in the mold acces-

sories should be fitted close to the connector on the mold.



Installing and Removing the Sensor

Installation Example with Spacer

Sleeve

The mounting nut included with larger sensors is not com-

pulsory. Installation is also possible with a spacer sleeve

with a slot at its side (for the cable exit). With very small

sensors (e.g. Types 6182A…/6183A…), preference should

be given to spacer sleeve mounting. The spacer sleeve is

often used when fitting sensors in prehardened inserts,

since this eliminates the need for an otherwise difficult to

machine thread.

This illustration shows a sensor fitted

with a spacer sleeve and «grub

screw». But this screw is not always

necessary. Usually, the sleeve is sup-

ported by a mold plate.

The sleeve length is normally selec-

ted so that a gap of up to about

0,02 mm remains.

Cable

Cable bore

0,02 mm

www.kistler.com

Switzerland

Kistler Instrumente AG

PO Box

CH-8408 Winterthur

Tel. (+41) 52 224 11 11

Fax (+41) 52 224 14 14

info@kistler.com

Kistler 6190CA Owner's manual

Brand: Kistler

Model: 6190CA

Category: Measuring & layout tools

Type: Owner's manual

This manual is also suitable for

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Kistler 6190CA Owner's manual

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Kistler 6190CA Owner's manual

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