| Product |
TR-74Ui |
TR-74Ui-H |
| Temperature/ Humidity Sensor (External) |
THA-3151 |
HHA-3151 (High-Precision Type) |
| Thermistor |
Polymer Resistance |
Platinum Resistance |
Electrostatic Capacitance |
| Measurement Channels |
Temperature 1ch |
Humidity 1ch |
Temperature 1ch |
Humidity 1ch |
| Unit of Measurement |
°C, °F |
%RH |
°C, °F |
%RH |
| Measurement Rance |
0 to 55 °C |
10 to 95 %RH |
-30 to 80 °C |
0 to 99 %RH |
| Accurancy |
±0.5 °C |
±5 %RH [at 25 °C, 50 %RH] |
±0.3°C [10 to 40 °C]
±0.5°C [all other temperatures] |
±2.5 %RH [at 25 °C, 10 to 85 %RH] ±4.0 %RH [at 25 °C, 0 to 10 % or 85 to 99 %RH]
At temperatures other than 25 °C and ≥ 0 °C, add ±0.1 %RH per degree of difference from 25.
Humidity Hysteresis: ±1.5 %RH or lower(*1) |
| Measurement Resolution |
0.1 °C |
1 %RH |
0.1 °C |
0.1 %RH |
| Response Time (90%) |
Approx. 7 min. |
Approx. 7 min. |
Approx. 20 sec. |
| |
| Illuminance/UV Sensor (External) |
ISA-3151 |
| Measurement Channels |
Illuminance: 1ch
UV intensity: 1ch |
| Units of Measurement |
Illuminance: lx, Klx
UV intensity: mW/cm2 |
| Measurement Range |
Illuminance: 0 lx to 130 Klx
UV Intensity: 0 to 30 mW/cm2 |
| Units of Cumulative Measurement |
Cumulative Illuminance: lxh, Klxh, Mlxh
Cumulative amount of UV Light: mW/cm2, W/cm2 |
Display Range of Cumulative
Measurement |
Illuminance: 0 lxh to 90 Mlxh
UV Intensity: 0 mW to 62 W/cm2h |
| Accuracy |
Illuminance: 10 lx to 100 KlxF±5 % [at 25°C, 50 %RH]
UV Intensity: 0.1 to 30 mW/cm2F±5 % [at 25°C, 50 %RH] (*2) |
| Relative Spectral Response |
Illuminance: Approximated to the CIE standard response function V (λ )
UV Intensity: 260 to 400 nm |
| Measurement Resolution |
Illuminance: Minimum of 0.01 lx
UV Intensity: Minimum of 0.001 mW/cm2 |
| Response Time (90%) |
3 sec. (at recording interval of 1 sec.)
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 (*3) |
Endless (Overwrite oldest data when capacity is full) or One Time (Stop recording when capacity is full) |
| LCD Display Items |
Measurements, Battery Life Warning, etc.
- Measurements: Illuminance / UV Intensity / Temperature / Humidity / Cumulative Illuminance / Cumulative amount of UV Light
- Display Pattern: Alternating or Fixed display
- Display Digits: Up to 4 digits |
| Communication Interfaces |
USB Communication, Serial Communication (RS-232C) (*4), Infrared Communication (IrPHY 1.2 low power) |
| Communication Time |
Downloading time for one unit at full capacity
- Via USB communication: approx. 45 sec.
- Via infrared communication: approx. 60 to 80 sec. |
| 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 |
About 62 g (including battery, excluding sensor) |
| Operating Environment |
Temperature: -10 to 60 °C Humidity: 90 %RH or less (no condensation) |
| Accessories |
AA alkaline battery (LR6), USB Communication Cable (US-15C), Illuminance/UV Sensor (ISA-3151), Temperature/Humidity Sensor (THA-3151 or HHA-3151), Software (CD-ROM), User's Manual Set (Warranty Included) |
- *1) When used in environments where temperature and humidity are over the values of 50°C 75%, 60°C 50%, 70°C 35%, and 80°C 25%, sensor hysteresis may fluctuate by values greater than ±1.5%RH. Under certain circumstances, it may take some time to return to normal measurement capability.
- *2) Compared to the value measured by the T&D standard sensor for calibration under our calibration light source.
- *3) Only "Endless" is available when using RTR-500W for Windows.
- *4) If necessary, serial communication can be established by using our communication protocol (contact your local distributor) to write a software program. In such a case, an optional serial communication cable (TR-07C) is needed.
- *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.
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