Digital Strain Recorder


· Suitable for long-term measurement in the absence of personnel under the environment without external power supply
· Compact & lightweight 10-channel model
· Equipped with a display used to confirm setting conditions and measured values
· Easy to collect data via USB memory


The RMH-310A is a battery-powered data collection device with low power consumption, suitable for long-tem measurement in the absence of personnel at the places without external power supply such as long-distance mountainous and heavy-snowfall area.

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Digital Strain Recorder


Channels 10
Application Conversion Strain gage civil engineering transducer
Civil engineering transducers with a thermal sensor
Strain gage transducer
Thermocouples (Types K and T)
Applicable Bridge Resistance 350 Ω(Full bridge System)
Cable Length 0.5mm2 4-conductor shielded cable maximum 2.0 km
Gage Factor 2.00 fixed
Bridge Current Approx. 2.19 mA DC (Constant current)
Measuring Range, Resolution, Accuracy) Strain : Measuring range: ±20000μm/m
Resolution: 1μm/m
Accuracy: ±0.1%FS
Temperature (Civil Engineering Transducers) : Measuring range: -30.0 to 70.0ºC
Resolution: 0.1ºC
Accuracy: ±0.5ºC
Temperature (Thermocouple K) : Notes: The accuracy of an internal reference point-of-contact compensator and accuracy of a thermocouple are not included in
measurement accuracy.
Temperature (Thermocouple T) : Notes: The accuracy of an internal reference point-of-contact compensator and accuracy of a thermocouple are not included in
measurement accuracy.
Temperature Stability Strain : Strain measurment Zero point Within ±1μm/m per ºC
Sensitivity Within ±0.02%/ºC
Temperature (Civil Engineering Transducers) : Zero point Within ±0.025%FS/ºC
Sensitivity Within ±0.04%/ºC
Temperature (Thermocouple) : Zero point Within ±0.025%FS/ºC
Sensitivity Within ±0.04%/ºC
Measurement Time Within 40 sec/10 channels (Scanning method)
Measurement Adapter Measuring Constant-current 0.24 mA DC (Constant current)
Data Storage 32000 Data points/channel
Clock Year (2 digits of the Gregorian calendar), Month, Date, Hour, Minute
Interval Measurement Set to 1 to 59 minutes (1 minute step), or 1 to 99 hours (1 hour step)
Check Functions Sensor check (Parallel resistance method and
during strain measurement)
Battery voltage
Memory check
Display LCD (16 digits×4 lines With no back light )
Display Functions The contents of the data below are displayed on LCD.
Measurement state, current time, data acqusition, real-time monitor, measurement start, measurement stop,condition setting, self-check, date setting, backup data collection, and version display
Operation UP, down, left, right key, ON/OFF, SET, and ESC
Interfaces USB 2.0 (Only saved in USB memory)
Power Supply 6 to 15 VDC, optional battery pack (RB-10A)
Current Consumption 100 mA or less (Operation), 100 μA or less (Standly), (At 6 VDC)
Input Specifications M3 Terminal for both solder and screw
Measuring Times 7,000 times or more (When measuring at intervals of 10 minutes at 23ºC using the optional RB-10A battery pack [10 Ah])
Operating Temperature -20 to 50ºC (Varies depending on the operating temperature range when using USB memory)
Operating Humidity 10 to 95%RH
Operating Environment Dust or the inductive noise of a bulk motor must not be present.
Dimensions 170 W × 230 H × 60 D mm (Excluding protrusions)
Weight 2 kg or less (Excluding the battery)
Lightning Arresters correspondence (SD4-75)

Standard Accessories

Standard Accessories Battery cable for battery pack other than RB-10A
USB memory for collection data (Industrial temperature range extended model)
Auxiliary tool (Data conversion & measuring conditions software)
Instruction manual (Saved in the provided USB memory)
Menu sheet

Optional Accessories

Optional Accessories Battery pack RB-5A (5Ah), RB-10A (10Ah)


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