SMI MHR3

MHR3

This roof monitor captures rock movement at multiple depths, using three rod positioned to detect delamination at distinct horizons/ Designed for deeper insight into layered roof behavior, the system logs all movement data digitally. Paired with a data logger, the readings can be retrieved via mobile app and saved or shared as CVS files for further review.

MHR3

Features and Specifications:

• Made in America
• 3-point extensometer
• Thousandths of an inch measurement retrievable via the Bluetooth data logger
• Non-corrosive materials
• Designed to install quickly and is easy to use by all
• 1-1/2″ diameter whole minimum
• Unlimited monitoring depth
• Resettable and adjustable

• Resolution Accuracy: .001”Operating Range 20° to 70°C (-4° to 158°F)
• Operating Range: mW (0 dBm)
• Radio Power 1: Approximately 30.5 m (100ft) line of-site
• Transmission Range: Bluetooth Low Energy (Bluetooth Smart)
• Wireless Data Standard: 1 second to 18 hours
• Logging Rate: Fixed interval (normal, statistics) or burst
• Memory Modes: Wrap when full or stop when full
• Start Modes: Immediate, push button, date & time, or next interval
• Stop Modes: When Memory full, push button, date & time, or after a set of logging period
• Time Accuracy: ± minute per month at 25°C (77°F)
• Battery Type: Two AAA 1.5 V alkaline batteries, user replaceable
• Battery Life: 1 year, typical with logging interval of 1 minute and Bluetooth Always On enabled; 2 years, typical with logging interval of 1 minute and Bluetooth Always On disabled; and temperatures between 0° and 50°C (32 and 122°F). Faster logging intervals and statistics sampling intervals, burst logging, remaining connected with the app, excessive downloads, and paging may impact battery life.
• Memory: 4 MB (1.9 million measurements, maximum)
• Full Memory Download Time: Approximately 4 to 15 minutes depending on the mobile device; may take longer thefurther the device is away