SmartRock 2TM Resources


Type Value
Reading Range -22 to +181 °F (-30 to 85 °C)
Measurement Accuracy ± 1.8 °F (± 1°C)
Measurement Resolution ± 0.18 °F (± 0.1°C)
Measurement Frequency Once every 15 mins (for 2 months of data)
Wireless Signal Range Up to 40 ft (12 m)
Temperature Cable Length 16 in (40 cm) / 10 ft (3 m)
Battery Life Up to 4 months after installation

How long is the battery life? 

The battery life is about 4 months under room temperature. 

Do MTO and DOTs allow this method of concrete strength measurement? 

The strength estimation according to the concrete maturity method as described in the ASTM C1074 has been specified by many DOTs in the US as well as the CSA. Here is the clause from CSA: 

“ In-place strength Test procedures 
Unless otherwise specified by the owner, the in-place strength shall be determined in accordance with CSA A23.2-14C, CSA A23.2-15C or ASTM C1074 for the purposes of determining: 
(a) when forms shall be removed or when prestressing or post-tensioning shall be applied; (b) when curing shall be terminated; and (c) when re-shores shall be removed.” 

What is the maximum depth I can place the SmartRock? 

We recommend a maximum depth of 2 in (5 cm) to ensure that the signals from the sensor are strong enough. The signal strength weakens as you place the sensor deeper. 

Can I get SmartRock with longer thermocouple cables? 

Yes. Please ask for customized length when you are ordering your SmartRock package. You can get this cable as long as 10 ft. 

Part No.ItemDescription
900112SmartRock®-S SensorWireless concrete temperature/maturity logger with 40cm (10′) temperature sensor
900114SmartRock®-L SensorWireless concrete temperature/maturity logger with 3m (10′) temperature sensor

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