Settlement Transducer KLA-A Settlement Transducer / NKLA-B TML-NET type Settlement Transducer

KLA-A Settlement Transducer
NKLA-B TML-NET type Settlement Transducer　100 mm to 200 mm

This is a settlement gauge that is set on a ground surface to measure the settlement of each ground layer. Special anchors are placed at target positions in a borehole, and the displacement between the anchors and the ground surface is measured. Measurement can be made at a maximum of six levels in one borehole.
* For information on network-capable NKLA-B, see special measurement systems.

 

Protection ratings : IP 45 equivalent

 

KLA-A Settlement Transducer / NKLA-B TML-NET type Settlement Transducer
Features
  • Remote measurement
  • Measures the amount of settlement at the maximum 6 positions.

  • Specifications
    Type No. of measurement Capacity Rated output Non-linearity Temperature range
    KLA-100A-○ 1 to 6 100 mm Approx. 2.5 mV/V
    (5000 x 10-6 strain)    		 1 %RO -20 to +60 ℃
    (no incing)
    KLA-200A-○ 200 mm
    Type No. of measurement Capacity Rated indication Non-linearity Temperature range
    NKLA-100B-○ 1 to 6 100 mm Approx. 5000 digit 1 %RO -20 to +60 ℃
    (no incing)
    NKLA-200B-○ 200 mm

    * “◯” under “Type” corresponds to the number of measurements, 1 to 6.

    Output polarity

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    Measurement moves in the plus direction with regard to an increase in settlement.

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Ground Extension Gauge KLG-B Ground Extension Gauge / NKLG-BB TML-NET type Ground Extension Gauge

KLG-B Ground Extension Gauge
NKLG-BB TML-NET type Ground Extension Gauge　100 mm

The KLG-B ground extension gauge is placed near the ground surface to measure the displacement of a ground slide. A superInvar wire is set between a stanchion at a reference point (fixed stanchion) and a stanchion at a measurement position (mobile stanchion) and this gauge is mounted on the stanchion at the reference point. The waterproof and environmental resistance features make this gauge suitable for on-site measurement work. The NKLG-BB model is designed specifically for use with the network measurement system TML-NET.

Protection ratings : IP 55 equivalent

 

Ground Extension Gauge KLG-B / NKLG-BB
Features
  • Remote measurement
  • Excellent stability
  • Easy to handle

  • Specifications
    Type Capacity Rated output Non-linearity Temperature range
    KLG-100B 100 mm Approx. 2.5 mV/V
    (5000 x 10-6 strain)    		 1 %RO -20 to +60 ℃
    (no incing)
    TML-NET(network measurement system)
    Type Capacity Rated indication Non-linearity Temperature range
    NKLG-100BB 100 mm Approx. 5000 digit 1 %RO -20 to +60 ℃
    (no incing)

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Ground Extension Gauge KLG-A Ground Extension Gauge / NKLG-AB TML-NET type Ground Extension Gauge

KLG-A Ground Extension Gauge
NKLG-AB TML-NET type Ground Extension Gauge　200 mm

The KLG-A ground extension gauge is used to measure the displacement of a ground surface. A super-invar wire is set between a stanchion at a reference point (fixed stanchion) and a stanchion at a measurement position (mobile stanchion) and this gauge is mounted on the stanchion at the reference point. The waterproof and environmental resistance features make this gauge suitable for on-site measurement work. The NKLG-AB model is designed specif ically for use with the network
measurement system TML-NET.

Protection ratings : IP 65 equivalent

 

KLG-A Ground Extension Gauge / NKLG-AB TML-NET type Ground Extension Gauge
Features
  • Remote measurement
  • Excellent stability
  • Easy to handle

  • Specifications
    Type Capacity Rated output Non-linearity Temperature range
    KLG-200A 200 mm Approx. 2.5 mV/V
     (5000 x 10-6 strain)    		 1 %RO -20 to +60 ℃
     (no incing)
    TML-NET(network measurement system)
    Type Capacity Rated indication Non-linearity Temperature range
    NKLG-200AB 200 mm Approx. 5000 digit 1 %RO -20 to +60 ℃
     (no incing)

    OUTPUT POLARITY

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    Super-invar wire is extended on measurement, ouput turns plus polarity.

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Surge Absorber Terminal

Surge absorber terminal SAT

These are terminals with built-in gas tube arresters for connecting transducers and instruments. The gas tube arrestor is a surge absorbing element to protect the connected device from surge voltage in the cable which is caused by induced lightning. Since the terminals are equipped with DIN rails, they can easily be installed in an instrumentation box and increased. Connecting works can be done easily and efficiently.

Surge absorber terminal SAT
Features
  • Most suited to installation in an instrumentation box owing to its small size
  • Most suited to protection of TML-NET wirings from thunderbolts

  • Specifications
    Type SAT-5A
    For 5 ch.　    		 SAT-4A
    For 4 ch.    		 SAT-3A
    For 3 ch.    		 SAT-2A
    For 2 ch.    		 SAT-1A
    For 1 ch.    		 SAT-1N
    For
    TML-NET

    DC breakdown voltage (100V/s)

    		 72 to 108 (V)
    Impulse breakdown voltage (100V/μs) 450 V max.
    Impulse discharge current 8/20μs 10 kA
    AC discharge current (50Hz) 9 cycle 45 A
    DC holdover voltage 50 V
    Impulse life (10/1000μs 500A) 100 times
    Insulation resistance 10000 (MΩ) min.
    Capacitance 2.0pF max.

FBG Strain Gauge

FBG Strain Gauge OFSG-10A/OFSG-10B

These are strain gauges utilizing a FBG (Fiber Bragg Grating) optical fiber sensor. Taking advantages of the FBG sensor, the FBG strain gauge is applicable to the conditions to which conventional strain gauges cannot meet. They are most suited to strain measurement in the vicinity of a motor or transformer which may cause electrical noise, and also suited to strain measurement in petrochemical, natural gas or chemical plant or in hydrogen environment where explosion protection is required.

FBG Strain Gauge OFSG-10A/OFSG-10B
Features
  • Temperature compensation function provided
  • Not influenced by electromagnetic noise
  • Connection of two or more gauges possible for both-end connector type OFSG-10B
  • Direct reading in strain by combined use with fiber-optic strainmeter TFM-104
  • Easy to handle (same as a strain gauge)
  • Measurement objects are steel, concrete and FRP such as composite material

  • Specifications
    Type OFSG-10A OFSG-10B
    Measurement object Metal, Concrete, Composite materials
    Backing material Metal backing
    Applicable adhesive Spot welding.CN.EB-2
    FBG optical fiber specifications FBG length(mm) 10
    Center wavelength(nm) Approx.1530 to 1565
    fiber Polyimide coated single mode optical fiber
    Operating temperature range(°C) -30 to +80
    Cable length(mm) Approx.90
    Connector assembly SC/APC
    Number of connectors 1 2

Measurement principle

The wavelength of the light reflected by FBG varies depending on the strain and temperature. When the FBG is mounted on a measurement object, not only the strain generated on the object but also an apparent strain caused by the temperature change is measured. Therefore, appropriate temperature compensation is required when the temperature change is significant. The FBG strain gauge OFSG-10A/OFSG-10B is composed of two FBG sensors, one of which is for strain measurement and another is for temperature compensation. These two sensors have different center wavelength respectively. It is constructed that the sensor for temperature compensation is not influenced by the strain generated on the measurement object. Owing to this construction, apparent strain component caused by temperature change is correctly measured and rejected, and the strain generated on the object can be measured in excellent precision.

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Usage example of FBG strain gauge

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A dedicated “Spot welder W-50R” is necessary when mounting the OFSG-10 by spot welding.

使用イメージ

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