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Specifications
TR-74Ui
TR-74Ui-S
Temperature-
Humidity Sensor
(External)
THA-3151
SHA-3151 (High-Precision Type)
Thermistor
Polymer
Resistance
Thermistor
Polymer
Resistance
Measurement
Channels
Temperature
1ch
Humidity 1ch
Temperature 1ch
Humidity 1ch
Units of
Measurement
°C, °F
%RH
°C, °F
%RH
Measurement
Range
0 to 55 °C
10 to 95 %RH
-25 to 70 °C
0 to 99 %RH (*1)
Accuracy
±0.5 °C
±5 %RH
at 25 °C, 50 %RH
±0.3°C
at 10 to 40 °C
±0.5°C
all other
temperatures
±2.5 %RH
at 15 to 35 °C,
30 to 80 %RH
Measurement
Resolution
0.1 °C
1 %RH
0.1 °C
0.1 %RH
Responsiveness Response Time (90%): Approx. 7
min.
Response Time (90%): Approx. 7 min.
Illuminance-UV Sensor ISA-3151
Measurement
Channels
Illuminance: 1ch
UV Intensity: 1ch
Units of Measurement Illuminance: lx, klx
UV Intensity: mW/cm
2
Measurement Range
Illuminance: 0 lx to 130 klx
UV Intensity: 0 to 30 mW/cm
2
Units of Cumulative
Measurement
Cumulative Illuminance: lxh, klxh, Mlxh
Cumulative amount of UV Light: mW/cm
2
h, W/cm
2
h
Display Range of
Cumulative
Measurement
Illuminance: 0 lxh to 90 Mlxh
UV Intensity: 0 mW to 62 W/cm
2
h
Accuracy
Illuminance 10 lx to 100 klx: ±5 % at 25 °C, 50 %RH
UV Intensity 0.1 to 30 mW/cm
2
: ±5 % at 25 °C, 50 %RH (*2)
Relative Spectral
Response
Illuminance: Approximated to the CIE standard response function V ( )
UV Intensity: 260 to 400 nm (UVA/UVB)
Measurement
Resolution
Illuminance: Minimum of 0.01 lx
UV Intensity: Minimum of 0.001 mW/cm
2
Responsiveness
Response Time (90%):
3 sec. at recording interval of 1 sec. or 6 sec. at other intervals
Logging Capacity
8,000 data sets (One data set consists of readings for all channels
in that type of unit.)
Recording Interval
Select from 15 choices: 1, 2, 5, 10, 15, 20, 30 sec. or 1, 2, 5, 10, 15,
20, 30, 60 min.
Recording Mode
Endless (Overwrite oldest data when capacity is full) or One Time
(Stop recording when capacity is full)
Communication
Interfaces
USB Communication (Mini-B connector)
Infrared Communication: IrPHY 1.2 low power (*3)
Serial Communication (*4)
Power
AA Alkaline Battery LR6 x 1
Battery Life (*5)
Approx. 6 months
Dimensions
H 55 mm x W 78 mm x D 18 mm
Weight
Approx. 40 g
Operating Environment Temperature: -10 to 60 °C
Humidity: 90 %RH or less (no condensation)
Software
PC Software (Windows)
Illuminance UV Recorder for Windows, T&D Graph
*1: When continually used in environments with temperatures above 60°C, accuracy of
humidity measurements will decrease over time. Also, humidity cannot be measured at
temperatures below -20°C.
*2: Compared to the value measured by the T&D standard sensor for calibration under our
calibration light source.
*3: If you wish to use infrared communication to download recorded data, it is necessary to
purchase the Data Collector TR-57DCi (sold separately).
*4: Customers wishing to write their own software, please contact your local distributor for
the serial communications protocol specifications. (Note: Optional serial communication
cable TR-07C is also required.)
*5: Battery life varies depending upon the ambient temperature in which it is used, the
recording interval, the frequency of communication, and the battery performance. All
estimates are based on operations carried out with a new battery and are in no way
a guarantee of actual battery life. When infrared communication function is enabled,
battery life may be shortened if the unit is used under the inverter type fluorescent
lighting.
*6: Free software download and information on OS compatibility is available on the Software
page of our website at tandd.com/software/.
The specifications listed above are subject to change without notice.
