PST-R3120 Thermometer-Hygrometer including dew point temperature with internal T RH sensors

Operating temperature range of data logger R3120, R3121 without display:

-30 to +80°C

Operating temperature range of data logger S3xxx with display:

-30 to +70°C

Accuracy of temperature measurement of internal sensor:

±0.4°C

Accuracy of the S3631 data logger Pt1000 input without probe:

±0.2°C from -50 do +100°C
±0.2% from reading from +100 to +260°C
±0.4% from reading from -90 to -50°C

Accuracy of air humidity measurement:

±2.5% RH from 5 to 95% at 23°C

Accuracy of dew point measurement:

±0.5°C from 30 to 95% RH

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)

Display and 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 connectors:

data logger with display 93x64x29mm
data logger without display 93x64x26mm

Power:

Lithium battery 3,6V, size AA

Typical battery life in low-power mode (1minute sampling):

7 years R3120, R3121
6 years S3120, S3121, S3631, S3541

Typical battery life in fast mode (10 second sampling):

3 years R3120, R3121
2.5 years S3120, S3121, S3631, S3541

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

Protection of loggers with internal sensors:

IP67 - protected against influence of temporary immersion into water, RH+T sensors are covered with a plastic cover with IP30 protection

Protection of S3121, R3121 loggers with cable probe:

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