KM strain transducer
lnternal strain of concrete, synthetic resin
Key features
- Self-temperature compensated transducer having a linear thermal expansion coefficient similar to concrete
- Low elastic modulus enables inner strain measurement during the very early stages of curing
- Simultaneous measurement of strain and temperature except for KM-30 ,KM-50F
- Surface strain measurement is also available onto retaining wall, strut, sheet pile, etc.
- KM-30/KM-100B/-100HB/-100BT Only CE Marking Compliant
About the KM strain transducer
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-100B to KM-100BT / KM-M
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Talk to an expertTechnical Specifications
Specification | Value |
---|---|
Capacity | ±5000 x 10-6 strain |
Rated output (Approx.) KM-30 | 2.5mV/V(5000 x 10-6 strain) |
Rated output (Approx.) KM-50 | 4.0mV/V(8000 x 10-6 strain) |
Rated output (Approx.) KM-100B | 100-HB | 100-BT | 2.5mV/V(5000 x 10-6 strain) |
Rated output (Approx.) KM-100M | 100-HM | 100-MT | 2.5mV/V(5000 x 10-6 strain) |
Non-linearityKM-30 | KM-50 | KM-100B | 100-HB | 100-BT | 1%RO |
Rated output (Approx.) KM-100M | 100-HM | 100-MT | 2%RO |
Temperature range KM-30 | -20 to +60℃ |
Temperature range KM-50 | KM-100B | KM-100BT | KM-100M | KM-100MT | -20 to +80℃ |
Temperature range KM-100HB | KM-100HM | -20 to +180℃ |