Features

• Large touchscreen with user-friendly interface

• Test piece support and automatic clamping for easy and precise

test piece loading

• Enhanced auto-touch function with improved post-processing

for faster, operator independent testing

• Ergonomically placed start button

• Quick overview of results

• Graphical display of bending curve with break angle/force indication

for analysis

• Bending length detection for ensuring correct program settings

• Adjustable bending angle

• Adjustable angular testing speed

• Easy instrument check and calibration

• Bending lengths of 1. 5. 10. 15. 20. 25 and 50 mm

• Available with 1N, 5N or 10N load cells

• Optional 25 mm sample support available

Ease of operation

L&W Bending Tester is easy to use with a large touchscreen interface

and intuitive menus, saving operator time and effort. Operators can

quickly change settings from the screen, with correct authorization.

It provides easy calibration and simple instrument check with included

check plate and gives a quick overview of  results for an entire series.

The bending curve with break angle/force in dication allows quick analysis

of the test to identify any erroneous measurements.

Operation is automated once the operator hits start. First, the instrument

is connected to power and pressurized air, and the operator selects either

a standard or pre-set, custom program. The pre cisely cut test piece can

be easily loaded in the measuring clamps and correctly aligned with the

loadcell with the help of sample support.

The operator simply places the test piece inside the clamp with one hand,

while the other hand starts operation with the  ergonomically placed start

button. The clamps are automatically closed with fixed pressure for precise

measurement.

Bending length detection ensures that the bending length selected in program

settings matches the manually set bending length, or otherwise warns the

operator with an error message.

ABB’s L&W Bending Tester is an easy-to-use and reliable instrument

that measures bending resistance and stiffness of paper and board.

Enhanced automation and digitalization allow mills to meet target

specifications and ensure product performance in converting and

end-use operations.

Overview

The L&W Bending Tester offers the best available features for

ease-of-use, automation, customiza tion, and digitalization,

for easy, fast, operator independent testing that gives reliable

and repeat able measurement results that mills require to

ensure customer specifications are being met.

Benefits

• Easy to use and customize

• Ergonomic operation

• Fast, operator-independent testing

• Reliable and repeatable results

• Streamlined lab data management

Even strength within specifications and across the reel width

L&W ZD Tensile Tester measures internal bond strength – or Z-direction (ZD)

tensile forces – of paper and multi-layered paper products, such as linerboard

and box board. The tester uses an automated method and you obtain fast

and reliable measurement values, which make it possible to achieve uniform

strength across the reel width. All in compliance with customer specifications,

as well as in accordance with applicable standards (ISO, TAPPI, SCAN).

Full control of the internal bond strength, is particularly important in the

production of multi-layered paper products. Low or unevenly distributed

internal bond strength can cause material splitting in an offset press with

sticky printing ink. In the creasing or scoring operation of boxboard the

material should delaminate “just enough”. Otherwise after folding there

will be poor folding lines or cracks in the outer layer. Internal bond strength

tests can predict this.

Enough internal bond strength is also needed in heat-set web offset printing

of highly coated paper. Otherwise blistering will occur when moisture will try

to escape during the heating process. Too high internal bond strength impedes

the creasing of the boxboard and high values also mean a waste of raw material

and energy. In other words, the aim is to achieve an even strength within

specifications and across the reel width. L&W ZD Tensile Tester can achieve this.

The ZDT Oxygen Analyzer is designed for continuous

monitoring of oxygen content in applications using ‘in situ’

ZGP2 probes.

Operation and programming of the ZDT Analyzer is via four

tactile membrane switches and a digital display located on the

front of the instrument. Two l.e.d.’s on the front panel provide

local alarm indication.

In operation, the instrument can display measured % oxygen,

cell mV, or cell temperature. Set up of alarm, retransmission

and calibation parameters is achieved in programming mode,

where key parameters are protected by a five-digit security

code.

Measured %O2 values can be retransmitted to remote

equipment using the retransmission output facility. The range

of values retransmitted can be set anywhere within the

instrument’s display range of 0 to 25% O2. subject to limits

detailed in Section 7.7.

Remote alarm indication is provided by two relay outputs.

Relays are programmed to activate when the oxygen level

moves either above or below a pre-defined set point. The

second alarm relay can also be used as a ‘general alarm’

which activates in the event of an instrument or system fault.

An optional external reference air unit is used to provide

reference air supply for the ZGP2 probe. If this unit is not

specified, reference air must be supplied to the probe from an

alternative source.

For full installation and operation details of the ZGP2 probe

refer to the operating manual, IM/ZGP2.

‘Fail-safe’ safety function

If the electric power supply fails, the positioner output 1 is

depressurized and the return spring in the pneumatic

actuator moves the valve to the safe position. In case of a

‘double-acting’ version, output 2 is additionally pressurized.

‘Fail-freeze’ function

If the electric power supply fails, the positioner Output 1

(and Output 2 if applicable) is closed and the pneumatic

actuator blocks the valve in the current position. If the

compressed air supply power fails, the positioner

depressurizes the actuator.

Use

The positioner has a built-in operating panel providing a 2

line LCD indicator and 4 operating buttons for

commissioning, configuration and monitoring during live

operation.

Alternatively, the appropriate configuration program can be

used via the available communication interface.

Communication

The positioner has a local communication interface (LCI) as

standard. Additionally, a ‘HART® communication’ option for

communication via the 20 mA signal is available. Both

communications are based on the HART® Protocol.

Alternatively, HART®5 or HART®7 are available.

Inputs / Outputs

In addition to its input for the analog position setpoint, the

positioner is equipped with a digital input which can be used

to activate control system functions in the device. A digital

output allows you to output collective messages (alarms /

faults).

Modular design

The basic model can be enhanced at any time by retrofitting

optional equipment.

Option modules can be installed for analog and digital

position feedback.

Additionally, a mechanical position indicator, proximity

switches or 24 V microswitches are available for indicating

the position independently of the mother board function.