| Environmental |
| Operating temperature range |
-20°C to +50°C, (-4°F to +122°F) , 0 to 100% RH non-condensing |
| Operating relative humidity range |
0 to 95%, non-condensing, noncorrosive environment |
| Logger Capabilities |
| Capacity |
Temp and RH: 21,500 measurements
Temp Only: 43,000 measurements |
| Software-selectable sampling intervals |
1 second up to 18 hours, recording times up to 1 year |
| Programmable start time/date |
| Recording modes |
Stop when full |
| Launch Modes |
Immediate, Delayed |
| Nonvolatile EEPROM memory retains data even if batteries fail |
| LCD |
| Size |
33 x 50.8 mm (1.3 x 2 inches)
Displays temperature and relative humidity simultaneously
Displays °C or °F (selectable within host software)
Displays memory remaining and battery level
Displays flashing ALERT for out-of-limits conditions (selectable within host software) and stops flashing on offload or return to normal range |
| Alarms |
High and low set points for both temperature and relative humidity
Selectable delays for each set point
Alert conditions reset on offload or return to normal range
Selectable Contact Relay: Normally Closed or Normally Open
Contact rating: 48VDC, 1A max
Contact resistance: less than 1 Ohm
Wire size range is 22AWG to 14AWG
0% Low Battery Range Communications
Offloads data to PC or U-Shuttle via USB cable
Readout full logger (64K) in less than 30 seconds |
| Timekeeping |
| Time accuracy |
±1 minute per month at 20°C (68°F) |
| Power |
3 AAA Alkaline batteries, user-replaceable |
| Size/Weight |
125 x 92 x 31 mm (4.9 x 3.6 x 1.2 inches)
170 g (6.0 oz) with batteries |
| Internal 12-Bit Temperature Sensor |
| Measurement range |
-20°C to 50°C (-4°F to 122°F) |
| Accuracy |
±0.21°C from 0° to 50°C (±0.38°F from 32° to 122°F); ±0.13°C (0.24°F) typical |
| Resolution |
0.02°C @ 25°C (0.04°F @ 77°F) |
| Response time |
15 minutes (to 90% in airflow of 1 m/sec) |
| Temperature Accuracy Drift |
Negligible |
| Internal 12-Bit Relative Humidity Sensor |
| User replaceable |
| Measurement range |
0-100% RH, -20 to 50°C (-4 to 122°F) |
| Accuracy |
±2.5% from 10% to 90% RH (typical), to a maximum of ±3.5% including hysteresis |
| Resolution |
0.03°C RH @ 25°C (0.05° at 77°F) |
| Response time to 90% |
2 minutes (to 90% in airflow of 1 m/sec) |
| Accuracy Drift |
<2% over 5 years typical |
| Hysteresis |
1% typical |
| External Sensors |
| For External Sensor Specifications, see the sensor's user manual |
| Battery Life |
| The batteries will last one year in typical conditions (logging intervals of ≥ 1 minute with weekly offloads and average temperatures greater than 10°C or 50°F). Frequent offloads and/or extreme temperatures will reduce battery life |
| At temperatures below freezing (0°C or 32°F), batteries will typically require replacement every six months. In these conditions the battery level bar graph should be checked regularly |