Concrete Filling Sensors KZA-1C

Concrete Filling Sensors KZA-1C

This sensor is designed to monitor the filling status of concrete in the formwork. 
By attaching the sensor to any location to be monitored and connecting it to a measuring instrument, the filling status can be monitored in real time. 
This sensor is particularly useful for quality control of construction work in confined spaces where it is difficult to check the filling status by compaction or visual observation, such as the flowability of high-fluidity fresh concrete in structures with high-density reinforcement. 

Concrete Filling Sensors KZA-1C
Features
  • Discrimination between materials with different electrical conductivities, such as fresh concrete, bleeding water, air, etc. 
  • Applied voltage method 
  • Compact, lightweight, and thin 
  • Measurable with our static strainmeter (TDS series)

Related products for continuous tube displacement transducers

Related products for continuous tube displacement transducers

Related Product Compatibility Table

Name Type KWL-E Description
Hose Water pipe* KWLF-21-1 ♦ φ15 x 22 spring-loaded vinyl hose
Air pipe KWLF-21-2 ♦ φ9×15 vinyl hose with reinforcing fiber
Socket Socket for water pipe** KWLF-22-1 ♦♣ Used to connect a continuous water pipe (KWLF-21-1) to the main unit or a reference water tank (KWLF-31)
Socket for air pipe KWLF-22-2 ♦♣ Used to connect a continuous air pipe (KWLF-21-2) to the main unit
Cheese Cheese for water pipe** KWLF-23-1 ♦ Cheese with hose opening used for branching of continuous water pipe (KWLF-21-1)
Cheese for air pipe KWLF-23-2 ♦ Cheese with a hose mouth for use in branching out a continuous air pipe (KWLF-21-2)
Hose band for water pipe** KWLF-24 ♦♣ Used to prevent disconnection of a connecting water pipe (KWLF-21-1) inserted into a hose opening
Plug for water pipe** KWLF-25 Δ Used to connect a continuous water pipe (KWLF-21-1) to the main unit and to release air in the water pipe
Wall pickup and payout fitting KWLF-26 Δ Fittings for mounting the main unit on a wall or other vertical surface (2 pcs/set)
Single Pipe Mounting Bracket KWLF-27 Δ Used when mounting the main unit using a single pipe (φ48.6). (2 pcs/set)
Heat insulator for water pipe** KWLF-29
（2m）		 Δ Heat insulator for continuous water pipe (KWLF-21-1) 
Reference Tank KWLF-31 ♦ A pump circulates water to create a constant reference water surface
Shade cover KWLF-32-1
（for KWL-100E）		 Δ Mitigates temperature effects of the body due to direct sunlight. Made of hard vinyl chloride.

* : Use a hose with an inner diameter of 15 mm or larger with cross-sectional reinforcement for the interconnecting water pipe
** : If a hose with an inner diameter larger than φ15 mm is used for the connecting water pipe, it is required separately
♦ : Related products required for measurement
♣ : One is included in the main unit
Δ : Used depending on the situation

Micro Creep Meter

Micro Creep Meter KH-A 5mm (±2.5mm)

This displacement transducer is designed to measure the internal displacement of concrete underground tanks and tunnels. 
It measures minute displacement between two points separated by 1 to 10 meters. 
A micro creep meter is attached to one point and a super invar wire fixture is attached to the other point using anchor bolts, and the two are connected by a super invar wire for measurement. 
It is mainly used as a construction management instrument. 

Protection ratings: IP42 equivalent

Micro Creep Meter KH-A
Features
  • Stable measurements over a long period of time 
  • High reliability 
  • Easy installation 

  • Specificatioins
    Type Capacity Rated output Non-linearity Temperature range
    KH-5A 5mm (±2.5mm) Approx.3.8mV/V (7600×10-6strain) 0.3%RO -10 to +60℃

    Output polarity

    img-trout-10

    The measured value moves in a positive direction relative to the direction in which the wire is pulled.

Shift Sensor

Shift Sensor KUH-A
X direction: ±3mm Z direction: +3mm

This sensor measures the amount of displacement by capturing the behavior of the joint between the front-placed concrete and the back-placed concrete of a concrete structure. 
Non-contact measurement between two points allows measurement without affecting the behavior of the joints. 
The sensor is compact, lightweight, and easy to handle. It can measure not only displacement in the shear direction (X direction), but also in the direction where the boundary surface delaminates (Z direction) due to cracks or other phenomena. 
Furthermore, it can be applied to concrete and steel surfaces (but not magnetized) as well as buried surfaces. 
This product was jointly developed with the Structural Maintenance Research Center, National Research Institute of Civil Engineering. 

Protection ratings: IP68 equivalent 

 

Shift Sensor KUH-A
Features
  • Non-contact measurement between two points, no influence on the behavior of the joint (boundary surface) 
  • Compact and lightweight 
  • Capable of measurement in both X and Z directions 
  • High response and dynamic measurement 
  • Can be used with general-purpose data loggers 
  • Waterproof construction

  • Specificatioins
    Type KUH-3A
    Capacity X : ±3mm　Z : +3mm
    Rated output X : approx. 3.0mV/V（approx. 6000×10-6 strain） 
    Z : approx. 1.1mV/V（approx. 2200×10-6 strain）
    Non-linearity X : 2％RO  Z : 4％RO
    Temperature range -10 to +60℃(No icing)
    Weight approx. 20g

Continuous Tube Displacement Transducer

Continuous Tube Displacement Transducer KWL-E　100mm

This displacement transducer measures the vertical displacement of civil engineering structures such as bridges. It is connected to a reference water tank at an immovable point by a connecting pipe, and measures the displacement with respect to the water surface in the tank. 
Inside the displacement transducer is a detector that constantly detects and tracks the water surface using a servo mechanism, and a circuit that electrically converts the amount of movement of the detector. 
The displacement of the structure is measured as the relative displacement of the reference water surface to the displacement transducer. 
Our data logger is used for measurement, allowing automatic measurement of multiple points. 
A servo mechanism is used to detect the reference water surface, and the circuit stability has been further improved to ensure stable measurement over a long period of time. (Built-in arrester) 

Protection class IP 54 or equivalent

Continuous Tube Displacement Transducer KWL-E
Features
  • Excellent temperature stability 
  • Drip-proof construction 
  • Automatic measurement

  • Specifications
    Type Capacity Rated output Non-linearity Allowable temperature range
    KWL-100E 100mm Approx.1mV/V (2000×10－6strain) 0.5%RO 0 to +50℃ 
    (excluding icing)

Bedrock Displacement Transducer

Bedrock Displacement Transducer KLB-B 100mm (-20 to +80mm) 

The KLB-B bedrock displacement transducer measures the amount of displacement between the mounting surface and a measuring point in bedrock. 
The KLB-B consists of a bedrock displacement transducer KLB-B, a hydraulic anchor (KLF-11/12), and a connecting rod (KLF-21). The KLB-B is equipped with up to 8 displacement transducers, so that 8 hydraulic anchors can be fixed in one borehole (φ66 mm or more for 1 to 6 points, φ86 mm or more for 7 or 8 points) for measurement. The amount of displacement between the displacement transducer and anchor is detected as relative displacement through the rod. 
The anchors are anchored to the bedrock by applying water pressure to the anchors at predetermined measuring points in the borehole using a pump from the ground. 

Protection class IP 68 or equivalent

Bedrock Displacement Transducer KLB-B
Features
  • Remote measurement is possible 
  • Capable of measuring up to 8 levels of rock displacement 

  • Specifications
    Type No. of measurement Capacity Rated output Non-linearity Temperature range
    KLB-100B-○ 1 to 8 100mm
    （-20 to +80mm）    		 Approx.2.5mV/V
    （5000×10－6strain）    		 0.5%RO 0 to ＋60℃ 
    (no incing)

    * “◯” under “Type” corresponds to the number of measurements, 1 to 8.

    Type Input/Output Resistance
    KLB-100B-1 350Ω
    KLB-100B-2 350Ω
    KLB-100B-3 350Ω
    KLB-100B-4 Input resistance 175Ω 
    Output resistance 350Ω
    KLB-100B-5 Measurement points1 to 4 Input resistance 175Ω 
    Output resistance 350Ω
    Measurement points5 Input/output resistance 350Ω
    KLB-100B-6 Input resistance 175Ω 
    Output resistance 350Ω 
    KLB-100B-7 Measurement points1 to 6 Input resistance 175Ω 
    Output resistance 350Ω 
    Measurement points7 Input/output resistance 350Ω
    KLB-100B-8 Input resistance 175Ω 
    Output resistance 350Ω 

    Output polarity

    img-trout-13

    Measurements move in the positive direction with respect to the direction in which the distance between the “rock displacement transducer” and the “water hydraulic anchor” opens