SME-31A – Handy Data Logger
- Built-in bridge box for easy to connection strain gages
- Wide measuring range ?301 k ?m/m
- Power supply AA batteries
The SME Series are handy data loggers for connecting strain gages, strain-gage transducers, and civil engineering transducers with thermal sensor.
Sampling Period Approx. 0.5 s: 0 to ? 30 k ?10-6 strain
Approx. 1 s: ? 30 k ?10-6 strain or more
Approx. 1 s: Civil engineering transducers with a thermal sensor
Measuring Functions RELATIVE measurement (Relative value measurement):
Each value is obtained by subtracting the ZERO value.?ZERO value is equivalent to the initial unbalance value. Capable of obtaining the ZERO value at arbitrary timing
Arithmetic Operations Calculation using coefficients
Measuring Targets Strain gages, strain-gage transducers, civil engineering transducers with a thermal sensor
Quarter bridge: 120, 240, and 350 ?
Half/full bridge: 120 to 1000 ?
Bridge Excitation Constant-voltage bridge excitation: Approx. 2 VDC
Constant-current bridge excitation: Approx. 5.6 mA
(Bridge resistance 350 ?)
Measuring Range At strain measurement
0 to ? 300 k ?10-6 strain (Constant-voltage bridge excitation)
0 to ? 20 k ?10-6 strain (Constant-current bridge excitation)
When measuring temperature with civil engineering transducers with a thermal sensor: -30.0?C to 70.0?C
Resolution At strain measurement
0 to ? 30 k ?10-6 strain: 1 ?10-6 strain
? 30 k to ? 300 k ?10-6 strain: 10 ?10-6 strain
When measuring temperature with civil engineering
transducer with a thermal sensor: 0.1?C
Accuracy At full bridge strain measurement
0 to ? 30 k ?10-6 strain: ? (0.05% of reading + 2) ?10-6 strain
? 30 k to ? 300 k ?10-6 strain: ? (0.1% of reading + 20) ?10-6 strain
When measuring temperature with civil engineering transducers with a thermal sensor: ? 0.5?C
Check Functions Insulation resistance measurement: 2 M to 100 M ?
Resistance measurement: 0 to 20 k?
Interval Measurement 1 minute to 99 hours 59 minutes in 1-minute steps
Starting time: year/month/day/hour/minute
Storage SD card (Option)
Applicable Cards 256 MB, 512 MB, 1 GB, 2 GB (FAT16)
(SDHC and SDXC not supported)
Display Monochrome LCD, 128 ? 64
TEDS Reads information from TEDS-installed sensors.
Channel name writing
(Kyowa ID only in up to 10 characters)
Operating Temperature -10 to 50?C
Operating Humidity 20 to 85?RH (Non-condensing)
Power Supply 2 AA alkaline batteries
Consecutive Operation Time Approx. 10 h (With alkaline batteries)
? Nickel metal hydride batteries is also used.
? An AC adapter (Optional, SW-0522E) is provided for SME-31A.
Auto Power Off Power is automatically turned off if no key operation is detected for 5 minutes. In interval measuring mode with an interval of 3 minutes or longer, power is automatically turned off during standby period and
turned on again 1 minute before the next measurement is started. (ON/OFF of Auto Power Off is settable.)
Dimensions 188 W ? 41 H x 108.4 D mm (Excluding protrusions)
Weight Approx. 450 g (Excluding batteries)
Standard Accessories Input cable U-119
AA alkali battery ? 2
Instruction manual (CD-R)
Optional Accessories AC adapter SW-0522E