Checkline KXB User Manual

ELECTROMATIC

E Q U I P M E N T C O., I N C.

600 Oakland Ave., Cedarhurst, NY 11516–U.S.A.
TEL: [phone] • FAX: [phone]

CHECK•LINE

®

INSTRUMENTS

CHECK•LINE

®

BY ELECTROMATIC

DX2/DXX

Operating Instructions

Also applies to Special Purpose Models: FX, FX2,
RX/BX, RX2/BX2, DXFT, DX2FT, TX, TX2, KXB

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CONTENTS

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Page

1.0 Overview & Operating Principle . . . . . . . . . . . . . . . 2

2.0 Operating Elements . . . . . . . . . . . . . . . . . . . . . . . . . 3

3.0 Thickness Compensation . . . . . . . . . . . . . . . . . . . . . 4

4.0 Quick Start Instructions . . . . . . . . . . . . . . . . . . . . . 5

5.0 Calibration Notes . . . . . . . . . . . . . . . . . . . . . . . . . 6

5.1 Calibration with “Standard” Filaments

5.2 Special Calibration

5.3 NIST Calibration

5.4 Calibration Verification Schedule

6.0 Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

6.1 High-Speed Guide Rollers

6.2 Lever Assembly

6.3 Air Dashpot Damping

6.4 Memory Pointer

7.0 Model Data & Specifications . . . . . . . . . . . . . . . . . 12

Appendix – DX2 Special-Purpose Models . . . . . . . 13

7.0 DX2 MODEL DATA & SPECIFICATIONS*

Accuracy** ± 1% of full scale or

± 1 graduation mark
on scale

Diameter of Scale 41 mm

Maximum Speed

(standard) 2000 m/ min
(optional) 3500 m/ min
(optional) 5000 m/ min

Outer roller distance, c:c

DX2-5 to DX2-EX 38 mm
DX2-200 to DX2-1K 100 mm
DX2-2K 150 or 200 mm
DXX-3K to DXX-5K 250 mm

Roller material

(standard) Hard-coated aluminum
(optional) Hardened steel (ST)

Chromed steel (W)
Ceramic (CE)

Plastic (PL)

Temperature limits 45–115 °F (8– 45 °C)

Humidity, maximum 85%

Housing material Die-cast aluminum

Dimensions 8.6 x 3.5 x 1.7 in.

(225 x 90 x 44 mm)

Weight

(up to DX2-1K) 1.1 lbs, (500 g) approx.

Weight (DX2-2K) 2.0 lbs, (900 g) approx.

* Except for minor differences in physical dimensions, above specifications also

apply to DXX instruments.

** Using factory standard materials and procedures. Special calibration using

customer sample is available.

Specifications subject to change without notice.

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1.0 OVERVIEW & OPERATING PRINCIPLE

DX2 and DXX Tension Meters are hand-held, mechani­cal instruments which accurately measure the running
as well as static tensions of a wide variety of process
materials including yarns, fibers, wires, optical fibers,
tapes, etc. They employ the 3-roller principle for ten­sion measurement where the outer two reference guide
rollers remain fixed during measurement to establish a
wrap angle over the middle sensing roller. The middle
roller, acting against an internal calibrating spring, is
displaced relative to the running line tension. This
displacement is converted to a rotary motion to turn a
pointer on a scale to give a reading in grams tension.

NOTES: 1) While illustrations show the Type DX2

Tension Meter, all references also
apply to the Type DXX and Special­Purpose Tension Meters as well.

2) DX2 Special Purpose Types, including
FX2, TX2, DX2F, RX2/BX2 and KXB,
are shown in the Appendix at the end
of these instructions. They all use the
3-roller principle for tension measure­ment except that head configurations
and roller assemblies are different,
having been designed for special
applications, as noted in the
Appendix.

6.3 Air Dashpot Damping

DX2 and DXX Tension Meters incorporate a moderate
amount of movement damping to smooth out some
high frequency tension fluctuation. However, where
process fluctuations result in rapid pointer swings
which make it difficult or near impossible to read the
scale, an optionally-available Air Dashpot Damping
mechanism can be provided to slow down the pointer
swings to permit a reading.
In setting up the mechanism,
it is best to set the damping
rate just to the point where
a readable pointer results
with minimal pointer swings.
The amount of damping is
set by turning the small
slotted screw or hex-head screw of the damping
assembly located near the guide-roller mounting
bracket. The Air Dashpot must be installed at time
of original manufacture. It cannot be added later.

CAUTION: Do not set damping rate too high as
this will damage the movement.

6.4 Memory Pointer

The optional Memory Pointer
assembly retains the highest reading
obtained during a measuring period.
Before using the instrument, rotate
the knurled pointer knob clockwise
until the “memory” pointer tab
contacts the measuring pointer at
zero. During operation and after
instrument removal, the trailing
“memory” pointer will hold the maximum reading until
reset with the pointer knob.