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Description:
Strain gauges, In the group of class-B gauges, most of the gaugesare temperature compensated strain gauges.
Gauge Part Number (P/N) | Grid Dimension | Backing Dimension |
ECH-120-(10)KA-(**) ECI-120-(15)KA-(**) ECI-350-(10)KA-(**) ECI-350-(10)KA-(**) ECI-350-(15)KA-(**) ECI-350-(15)KA-(**) ECH-350-(20)KA-(**) ECI-350-(20)KA-(**) | Ø 9.0 Ø 14.0 Ø 9.0 Ø 9.0 Ø 14.0 Ø 14.0 Ø 19.0 Ø 19.0 | Ø 10.0 Ø 15.0 Ø 10.0 Ø 10.0 Ø 15.0 Ø 15.0 Ø 20.0 Ø 20.0 |
Strain Gauges for Precision Stress Analysis | |||
| ECH series | ECI series | OCP series | |
| gauge features | encapsulated gauges with temperature compensation, goodflexibility for installation | encapsulated gauges with temperature compensation, higherelongation | open-faced gauges with thinner backing, good flexibility forgauge installation |
| metal foil | constantan alloy | constantan alloy | constantan alloy |
| backing material | phenolic acetal resin | polyimide resin | paper-based acetal resin |
| cover material, or surface protection | phenolic acetal cover | phenolic acetal cover | acetal-resin surface protective coating |
| nominal resistance (Ω ) | 60, 120, 350, 650 | 120, 350 | 120 |
| tolerance of resistance | < ± 0.1 % | < ± 0.1 % | < ± 0.1 % |
| gauge factor | 2.00 ~ 2.20 | 2.00 ~ 2.16 | 2.00 ~ 2.26 |
| gauge factor dispersion | < ± 1 % | < ± 1 % | < ± 1 % |
| strain limit | 2.5 % | 3 % | 2 % |
| fatigue life | > 10 7 | > 10 7 | > 10 7 |
| temperature compensation | available for titanium (9), mild steel (11), stainless steel(16), | not available | |
| working temp. range | - 50 ~ 80 °C | - 160 ~ 150 °C | - 30 ~ 80 °C |
| curing temperatures | 135 °C, 180 °C (curing process); 165 °C, 180 °C(post curing process) | ||
| bonding adhesives | B-610, B-602, B-502 | B-610 | B-610, B-714, B-502 |
| soldering pad finishing | FR (single element gauges), RL (multi-elementgauges) | RL (all type gauges) | |
| lead type (FR or RL) | silver-plated solid-copper flat ribban (FR: 0.05 x0.3 x 30 mm) or round lead (RL: Ø 0.15 x 30 mm); All the diaphragmstrain gauges (type KA, KB, KC, and KD) can only have the roundleads (RL), and the flat ribbon leads (FR) is not available for theKA, KB, KC, and KD diaphragm strain gauges. | ||
