Specification :

Humidity and temperature data loggers.
Hygrometer - thermometer is designed for record of relative humidity, temperature, dew-point, optionally in combination with universal input 0-5V. Relative humidity and temperature values are stored to a non volatile electronic memory. Data transfer to the personal computer for further analysis is performed via USB, RS232, GSM or Ethernet interface by means of a proper adapter.
Main applications of hygrometer:

* Food and beverage industry ( HACCP)
* Pharmaceutical industry,
* Horticulture and cultivation of plants
* HVAC ( heating, ventilation, air conditioning, cooling)
* Building and energy management
* Research and development
* Laboratories ( GLP)
* Warehouses
* Technological processes
* Museums, archives, galleries

Advantages of hygrometer:

* included traceable calibration certificate from the manufacturer - Comet
* fast data transfer to the PC ( full memory for approximately 30s)
* variability of connection to the computer - USB, RS232, Ethernet, GSM modem
* permanent connection to the PC enabled, data is possible to download even during logging
* large data memory 32000 values
* large dual line display with special symbols, switchable
* optional display of minimum and maximum measured values ( reset of min/ max memory from PC or by magnet)
* dual level alarm is enabled for each channel, alarm is indicated by blinking of the value on the LCD display or LED diode
* two alarm modes are enabled: instant or with memory ( detected alarm is indicated permanently till alarm memory is cleared from the PC)
* robust watertight case
* easy installation, locking enabled
* low power consumption from battery, battery life up to 7 years
* indication of remaining battery life, easy replacement of the battery
* it is possible to combine temperature and humidity measurement with two user calibrated 0-5V voltage signals
* logging start/ stop is enabled in several ways: at certain time and date programmed from computer, by delivered magnet
* also special logging mode is enabled, when logging runs only, if some of measured values are out of adjusted alarm limits
* each data logger is possible to describe with text of maximum 32 characters
* each channel is possible to describe with text of maximum 16 characters
* password protection is enabled to prevent unauthorized manipulation with logger

COMMON TECHNICAL PARAMETERS OF HYGROMETER
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
Warranty: 2 years