This gauge eliminates the need for a moistureproof coating, which is sometimes troublesome in field tests. The gauge has a vinyl lead wire and the entire gauge and lead wire junction have been fully overcoated with a transparent and flexible epoxy resin approximately 1 mm thick. Perfect waterproofing can be achieved by merely bonding the gauge with adhesive CN or P-2.
Datasheet: WF series Waterproof strain gauge
| Main Test Materials | Metal | Materials Backing | Epoxy |
|---|---|---|---|
| Operating Temperature | 0 to +80°C | Materials Element | Cu-Ni alloy foil |
| Compensation range | +10 to +80°C | Strain limit | 3% (30000×10-6) |
| Bonding adhesive | CN,P-2 | Fatigue life at room temp. | 1×106 (±1500×10-6) |
Single element(G.F. 2.1 approx.)
0.08mm2 PVC Leadwire pre-attached
Total resistance per meter : 0.44(Ω)
| type | gauge length (mm) |
gauge width (mm) |
backing length (mm) |
backing width (mm) |
backing thickness (mm) |
resistance (Ω) |
leadwire pre-attached |
Type name of lead wire |
|---|---|---|---|---|---|---|---|---|
| WFLA-3-11 WFLA-3-17 WFLA-3-23 |
3 | 1.7 | 17 | 8 | 1.5 | 120 | Paralleled 1m Paralleled 3m Paralleled 5m 3-wire 3m 3-wire 5m |
-1L -3L -5L -3LT -5LT |
| WFLA-6-11 WFLA-6-17 WFLA-6-23 |
6 | 2.2 | 25 | 11 | 1.5 | 120 | Paralleled 1m Paralleled 3m Paralleled 5m 3-wire 3m 3-wire 5m |
-1L -3L -5L -3LT -5LT |
90° 2-element Cross(G.F. 2.1 approx.)
0.08mm2 PVC Leadwire pre-attached
Total resistance per meter : 0.44(Ω)
| type | gauge length (mm) |
gauge width (mm) |
backing length (mm) |
backing width (mm) |
backing thickness (mm) |
resistance (Ω) |
leadwire pre-attached |
Type name of lead wire |
|---|---|---|---|---|---|---|---|---|
| WFCA-3-11 WFCA-3-17 WFCA-3-23 |
3 | 1.7 | 19 | 16 | 1.5 | 120 | Paralleled 1m Paralleled 3m Paralleled 5m 3-wire 3m 3-wire 5m |
-1L -3L -5L -3LT -5LT |
| WFCA-6-11 WFCA-6-17 WFCA-6-23 |
6 | 2.3 | 25 | 21 | 1.5 | 120 | Paralleled 1m Paralleled 3m Paralleled 5m 3-wire 3m 3-wire 5m |
-1L -3L -5L -3LT -5LT |
90° 3-element Rosette(G.F. 2.1 approx.)
0.08mm2 PVC Leadwire pre-attached
Total resistance per meter : 0.44(Ω)
| type | gauge length (mm) |
gauge width (mm) |
backing length (mm) |
backing width (mm) |
backing thickness (mm) |
resistance (Ω) |
leadwire pre-attached |
Type name of lead wire |
|---|---|---|---|---|---|---|---|---|
| WFRA-3-11 WFRA-3-17 WFRA-3-23 |
3 | 1.7 | 19 | 16 | 1.5 | 120 | Paralleled 1m Paralleled 3m Paralleled 5m 3-wire 3m 3-wire 5m |
-1L -3L -5L -3LT -5LT |
| WFRA-6-11 WFRA-6-17 WFRA-6-23 |
6 | 2.3 | 25 | 21 | 1.5 | 120 | Paralleled 1m Paralleled 3m Paralleled 5m 3-wire 3m 3-wire 5m |
-1L -3L -5L -3LT -5LT |