Network Handheld Strainmeter TC-35N

The TC-35N is a handheld instrument which captures and processes the digitized strain data from network modules. It can be used for checking the system on site and/or constructing a small measurement system. By adopting low-consumption type network modules, number of connectable modules and extending distance of modules are enlarged drastically and construction of a comparatively larger measurement system is easily enabled.

• Specifications

  Type	TC-35N
  Maximum number of connection	Conventional module	5 modules (when using internal AA batteries or AC adaptor) 100 modules (when using external DC power source; 200m or less for 2-wire conection)
  	Low-comsumption module	50 modules (when using internal AA batteries or AC adaptor) 100 modules *1 (when using external DC power source; 2km or less for 2-wire connection)
  Maximum extension distance	Conventional module	50m (when using internal AA batteries or AC adaptor) 2km (when using external DC power source; 15 modules or less for 2-wire connection)
  	Low-comsumption module	50m (when using internal AA batteries or AC adaptor) 2km (when using external DC power source; 100 modules or less for 2-wire connection)
  Applicable transducer	Conforms to network module
  Data acquisition speed	Approx. 0.2sec/ch in scanning measurement
  Function	Scanning measurement, Monitoring measurement, Module checking function, ID checking function, Reading transducer information (CAP, RO), Setting channel of network module
  Dimensions	102(W) x 55(H) x 223(D)mm
  Weight	Approx. 850g
  Power source	Alkaline dry battery LR6×4 or Dedicated AC adaptor

  ^*1: When 2-channel modules (NSW-024C and NKB-MD) are used, the maximum number of channel is 100.
  Note: When conventional module and low-comsumption module are used together, the specifications follow those for conventional module.

System Block Diagram

Gauge protector

This rubber protector is designed to protect gauges which are bonded onto metal surface from the environment for long-term measurement. The strain gauge is packed inside together with the applied adhesive and overcoating materials. The protector is also provided with a hole for cable intake. It allows the entire area to be isolated from ambient conditions which may affect reliable measurement, and further increases the coating performance.

After completing the 1st and 2nd overcoating layers, epoxy resin is injected to provide mechanical protection.

Strain gauges with a large-size backing, such as the PFL-30-11 ane PL-60-11, cannot be used with the Gauge Protector.

KM/KM-M Strain Transducer　
±5000×10^-6 strain

The KM series strain transducers are designed to measure strain in materials such as concrete, synthetic resin which undergo a transition from a compliant state to a hardened state. Their extremely low modulus (KM-M:25N/mm²) ,(others:40N/mm²) and waterproof construction are ideally suited for internal strain measurement during the very early stages of curing. They are totally impervious to moisture absorption, producing excellent stability for long-term strain measurement. Relative temperature measurement is also possible with the KM-B. The built-in thermocouple sensor of the KM-BT enable actual temperature measurement in addition to strain measurement. Adding to the above embedment use, surface strain measurement onto concrete, H-beam steel is also available with various optional fittings.
The new KM-M type small-diameter strain transducer has a smaller diameter than the conventional product and is suitable for measuring concrete with a thin cover thickness and surface strain. The KM series is compliant to CE marking except for KM-50F and KM-M.

 

Protection ratings: 
IP67 equivalent for KM-30
IP68 equivalent for KM / KM-M

• Specifications

  Type	Capacity	Rated output (Approx.)	Non-linearity	Temperature range
  KM-30	±5000 x 10-6 strain	2.5mV/V (5000 x 10-6 strain)	1%RO	-20 to +60℃
  KM-50F		4.0mV/V (8000 x 10-6 strain)		-20 to +80℃
  KM-100B		2.5mV/V (5000 x 10-6 strain)
  KM-100HB				-20 to +180℃
  KM-100BT				-20 to +80℃
  KM-50M	±5000 x 10-6 strain	3mV/V (6000 x 10-6 strain)	2％RO	-20 to +80℃
  KM-100M		2.5mV/V (5000 x 10-6 strain)
  KM-100HM				-20 to +180℃
  KM-100MT				-20 to +80℃

Switching Box CSW-5B (for TC-32K)

This is a 5-channel switching box used exclusively with handheld data logger TC-32K for extending the number of measurement points. It can measure strain, DC voltage, thermocouple and Pt-RTD.
As for the CSW-5B-05, it is equipped with NDIS connector receptacle for every channel in addition to ordinary connecting terminals, which is convenient for use with strain gauge based transducers.

• Specifications

  Type	CSW-5B
  Measuring object	Strain, DC voltage, Thermocouple, Pt RTD
  Number of measuring channels	5 channels
  Dimensions	CSW-5B : 75(W) x 35(H) x 204(D)mm CSW-5B-05 : 95(W) x 35(H) x 204(D)mm
  Weight	CSW-5B : 500g CSW-5B-05 : 650g
  Power supply	Supplied from TC-32K

KW-C Water Level Transducer　10m to 50m

The KW-C is a hydraulic water level transducer that measures the level of water in dams and rivers and the level of under-ground water in ground in landslide areas. Effects of changes in atmospheric pressure do not need to be compensated, so high-accuracy measurement can be made.

 

Protection ratings : IP 68 equivalent

 

• Specifications

  Type	Capacity	Rated output	Non-linearity	Temperature range
  KW-10C	10m	Approx. 1mV/V (2000 x 10-6 strain)	0.2%RO	-20 to +60℃ (no icing)
  KW-20C	20m
  KW-30C	30m		0.3%RO
  KW-50C	50m

  Output polarity

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