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

• 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

  

  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