SenSpot™ Displacement Meter Ultra-Low Power Precision Sensing & Wireless Communication Typical Applications ▪ Bridge health monitoring ▪ Structural integrity monitoring (buildings, dams, tunnels, etc.) Monitoring of bridge bearing and expansion joints ▪ Monitoring width of cracks on structures ▪ Monitoring timber structures and bridges Benefits ▪ Long lifetime (battery life of 10 years) ▪ Wireless communication (IEEE 802.15.4) ▪ Lightweight (about 245 grams) o Wireless transmitter: 120 g (4.2 ounces) Displacement sensing element (1”): 115 g (4.0 ounces) Displacement sensing element: 158mm (6.25”) x 22mm (0.9”) (1” displacement) Adjustable sampling interval: The regular sampling interval can be adjusted remotely by user from 100ms (10 samples/sec) to 15sec Adjustable transmission interval: Can be adjusted remotely by user from 18sec to 360sec. Long communication range: 1.0km (0.62mile) free space High-rate data transmission triggered by sudden strain changes: o Perfect for recording the waveform of a sudden displacement change (e.g., displacement event) caused by live load (e.g., heavy trucks passing over a bridge, wind gust, loading cycles). User adjustable sampling rate for event detection and high-rate data from 10 to 100 samples per second User adjustable triggering threshold from 0.025mm for detecting displacement event

Measurement non-linearity: <= ±0.10% (Full Stroke) Working temperature: -40°C to +65°C (-40°F to +150°F) Ingress Protection: IP65, weatherproof. Protected against rain, snow, and UV exposure Power source: replaceable lithium-ion battery

Description Type A: this type can measure displacement values from 100ms to every 15s. This type does not have the capability of detecting sudden change of displacement (or event) values. But it is enough for most applications. Especially, when the main goal is just long-term monitoring such as crack monitoring. Since cracks inside structures typically develop slowly over long run. SenSpot™ provides an easy to install, scalable solution for distributed structural integrity monitoring. Resensys SenSpot™ technology offers a high-performance method for largescale sensing, wireless synchronization,...

Displacement sensing element Figure 1: Displacement SenSpotTM (sensing element) dimensions. All dimensions are in mm [inch]. Email: info@r

SenSpot™ - Wireless Transmitter Wireless transmitter is universal and it reads the analog measurement from the sensing element and transmits the data wirelessly to SeniMaxTM. These units come in either self-adhesive or flange-mount form factors. Figure 2: Wireless transmitter dimensions for Displacement SenSpotTM. All dimensions are in mm [inch]. Email: [email protected]

The data shown in SenScope™ Figure 3: High-rate displacement measurements for a Displacement SenSpotTM Email: [email protected]