dMicro Crack Meter

Monitors cracks digitally with a 10mm range, operating using an embedded microcontroller running the d-Tech firmware.

dMicro Crack Meter

Monitors cracks digitally with a 10mm range, operating using an embedded microcontroller running the d-Tech firmware.

dMicro Crack Meter

Monitors cracks digitally with a 10mm range, operating using an embedded microcontroller running the d-Tech firmware.

A digital crackmeter with a 10mm range

Used to monitor cracks in rock surfaces using d-Tech firmware, the d-Micro is also used to monitor:

Individual or interface cracks structures
Cracks in underground mines
Cracks in parking garages, dams under rehabilitation
Cracks in residential structures subjected to blast vibration and fracking vibration
Bridge-deck behaviour
Pillars and posts
Inductive, non-contact technology for immunity to hostile environments

Long term data logging is possible uisng BluLink or d4BluGateways, resulting in low power usage.

Specifications
Sensor Length	250mm
Signal	RS485 Output signal (9600,8,N,1) ASCII encoded
Algorithm	10 point calibration
Interface	Use luLinks and d4 BluGateways (LTE-M or WiFi)
Measurement units	mm and °C
Accuracy	0.5% FS
Resolution	0.01% FS =m 1 micron
Connectivity	Ethernet, WiFi networks and LTE networks, Loadsensing, Ackcio, Wisen, Senceive, CSI.

An on-board microcontroller provides temperature compensation, applies a 10-point calibration algorithm, and outputs as ASCII encoded RS485 (9600, 8, N, 1) signal. The output signal can be routinely transmitted over 1,000m/3,000ft of lead-wire.

The d-micro strain gauge is capable of 1 micron resolution over a range of 10mm. The gauge is attached to the structure using the #8-32 threaded rod at either end.