| Comet R3121 Specifications |
| Technical Parameters |
Value |
| Measured Value |
Temperature + Relative Humidity |
| Construction Type |
With T+RH Probe on Cable |
| Temperature Measuring Range |
-30 to 105 °C |
| Two-State Input |
No |
| Lcd Display |
No |
| Built-In Printer |
No |
| Operating temperature range |
-30 to +80°C |
| Measuring range of the probe |
temperature -30 to +105°C, humidity 0 to 100%RH |
| Accuracy of temperature measurement |
±0.4°C from –30 to +80°C, ± 0.5 °C over +80°C |
| Accuracy of humidity measurement |
±2.5% RH from 5 to 95% at 23°C |
| Accuracy of dew point measurement - see details in graph |
1.5 °C at ambient T < 25°C and RH>30% range -60 to +70 °C |
| Resolution of the reading |
0.1°C, 0.1%RH |
| Real time clock |
year, leap year, month, day, hour, minute, second |
| Data logging interval |
adjustable from 10s to 24h (1minute to 24h in low-power mode) |
| Alarm refresh |
each 10 s (each 1 minute in low-power mode) |
| Total memory capacity |
32000 temperature, humidity values in noncyclic logging mode |
| Data logging modes |
noncyclic - data logging stops after filling the memory
cyclic - after filling memory oldest data is overwritten by new |
| Dimensions without probe |
93x64x27mm |
| Power |
Lithium battery 3,6V, size AA |
| Typical battery life in low-power mode (1 minute sampling) |
7 years |
| Typical battery life in fast mode (10 second sampling) |
3 years |
| Battery life in continuous on-line mode with interval 1 minute |
reduced to 70% of the above lives in fast mode |
| Battery life in continuous on-line mode with interval 10 second |
1 year |
| IP protection |
IP67 - protected against influence of temporary immersion into water, RH+T sensors are covered with a stainless steel mesh with IP40 protection. Filtering ability 0,025mm |
| Weight including battery |
105g |
| Warranty |
3 years |