AMETEK 956 Blok Housing Option User Manual

1080 N. Crooks Road, Clawson, MI 48017-1097
Phone: [phone] Toll Free: 800-635-0289
Fax: [phone] www.AMETEKAPT.com

INSTALLATION MANUAL

Copyright 2005 by AMETEK AUT OMATION & PROCESS TECHNOLOGIES.

All Rights Reserved. Made in the USA.

L

INEAR

D

ISPLACEMENT

T

RANSDUCERS

956 BLOK

LOW PROFILE SENSOR HOUSING

Other Products

Applications

956LC 956S
956A 956D

956DQ

Includes 956 BLOK

Programming Instructions

and Accessory Guide

956 Series

ABSOLUTE PROCESS CONTROL
KNOW WHERE YOU ARE... REGARDLESS

956.M4R

6/05.Z163

Mounting

The 956 BLOK is available with three optional
mounting heights. When using the standard
SD052200 mounting feet, the distance from the
bottom of the foot to the center of the piston rod is
.315”.

When replacing linear potentiometers we offer a
mounting kit which will include two standard feet and
the necessary spacer to accommodate either a .45”
or .75” mounting height. The part number for the
spacer kit is SD0545100.

The mounting feet simply slide into the groves on the
BLOK extrusion and clamp down when tightened.

The 956 BLOK comes standard with a ¼”-28 UNC
thread and a fl at across the piston for attaching it to
a moving member of the machine. Optional rod ends
are available for ease of mounting and alignment.

When the 956 BLOK leaves the factory it is
programmed for the specifi c stroke length. However,
the mechanical stroke of the piston is greater than the
specifi ed stroke length to help prevent damage that
could occur to the unit if over-stroked.

When the piston is fully retracted, the magnet
assembly will be at 3/8” (.375”) into the Null Zone.

When mounting, or if you plan to re-program the unit,
it is very important to stay out of this area.

To determine the usable portion of the unit, fully
retract the piston assembly, then pull it out 3/8” and
mark this location on the piston with either a pencil
or a marker. From this point, extend the piston by the
active stroke length specifi ed in the part number on
the product label. Again, mark this location on the
piston.

The area between the two marks on the piston is the
sensors active stroke range. To re-program the units
active stroke, please refer to the programming guide
located in the 955 manual.

Preface

The 956 BLOK is a housing option available for all 955
BRIK Style Linear Displacement Transducers.

In this manual you will fi nd all necessary dimension and
mounting drawings. Wiring and programming details
along with electrical specifi cations can be located in the
955 Installation & Programming Manual.

Introduction

The 956 BLOK is an exclusive two chamber industrial
rod and barrel style enclosure for the GEMCO 955 Linear
Displacement Transducers. The electronics are isolated
in a chamber that has an IP67 or optional IP68 rating.
The piston is housed in the second chamber which has
an IP65 rating. The units are available up to a stroke
length of 36 inches. The 316 stainless steel rod or piston
is .375” in diameter and has ¼”-28 threads extending
from the extrusion for easy installation. The opposing end
of the rod is a piston with a magnet permanently affi xed
that slides easily through a Rulon bearing assembly. As
the magnet is moved it is sensed by the electronics in the
other chamber and converted to a useable output.

Caution

!

U

Disconnect power before servicing.
The GEMCO 956 BLOK LDT contains no
serviceable components. Consult factory for
repair or replacement.

NOTE: The 956S BLOK is NOT FM approved for
Class I Div II applications.

Accessories Compatible LDTs

Description Catalog

Number

956A,
S, LC

955D,

QD

Mounting Foot

(order two per probe)

SD0522000 X X

Rod End (Shaft) 04-570256 X X

Mount feet for .45” or .75”

mounting Includes two

mounting feet & spacers

SD0545100 X X

Ametek Automation & Process Technologies has
checked the accuracy of this manual at the time it was
approved for printing. However, this manual may not
provide all possible ways of installing and maintaining
the LDT. Any errors found in this manual or additional
possibilities to the installation and maintenance of
the LDT will be added in subsequent editions. Any
comments you have for the improvement of this manual
are welcomed.

AMETEK reserves the right to revise and redistribute
the entire contents or selected pages of this manual.
All rights to the contents of this manual are reserved by
AMETEK.

Wiring Diagram 955A Only

Euro Connector

(Micro 12 mm single

keyway)

Pin # Wire Color Function

1 Brown Customer Supplied

Power (+VDC)
2 White Program Input
3 Blue Power Supply Common
4 Black Position Output
5 Gray Analog Output

Common

Note: Refer to your specifi c model number
and application manual for the correct wire
diagram and pin location.

Optional Rod End.
Part # 04-570256

1080 N. Crooks Road • Clawson, MI 48017 • 800.635.0289 • 248.435.0700 • Fax [phone] • www.AMETEKAPT.com 1080 N. Crooks Road • Clawson, MI 48017 • 800.635.0289 • 248.435.0700 • Fax [phone] • www.AMETEKAPT.com