Hytherograph LB-710AL is designed for air temperature and relative humidity measurement in closed places (museums, warehouses, archives, laboratories). It is a stationary device, of small size, powered from an outside power supply.
For measurement the device uses data from the temperature sensor Pt-1000 as well as from the capacitive relative humidity sensor. Basing on the knowledge of nonlinear sensor characteristics and digital calibration data stored during the calibration process in a device's memory - the microprocessor (built-in the device) counts the actual relative humidity and temperature measurement results. Those results are sent (in a digital form) from the device to the supervisory system of data collection.
The device is equipped with a digital current interface and its time course is analogous to the standard RS232C. Such interface beside data transmission is also used for powering the hytherograph - using two-cable connection for this purpose (i.e.: telephone type), but the polarity of attaching the interface's cables is optional.
The device can be attached to any supervisory system using the interface i.e.: concentrator LB-487 or to an interface RS232C of any computer (through interface LB-375). It allows on remote control and automatic measurement data collection.
The device does not have any mechanical calibration elements (i.e.: potentiometers). The calibration of the device is performed by sending calibration data obtained in the model climate conditions through a digital interface to the non-volatile memory of device. It guarantees comfort and high calibration accuracy as well as stability of the device's meteorological parameters in time.
||+/- 0.2°C||+/- 1 last digit|
|Scope of measurement||-40..+85°C||version LB-710L|
||+/- 2.0%||in the scope of 10...90%, +/- 1 last digit|
|+/- 4.0%||outside of the scope 10...90%|
|Scope of measurement LB-710AL||10..95%||for temperatures up to +40°C|
|10..60%||for temperatures up to +70°C|
|Scope of measurement LB-710ALH||0..100%||for temperatures up to +60°C|
|0..70%||for temperatures up to +70°C|
||Scope of readings||Resolution
|RECOMMENDED CONSTANT WORK CONDITIONS *)|
|Scope of temperatures
|Scope of humidity||20..80%|
|Level of environment corrosion aggressiveness accord. PN-71/H-04651||B|
|Degree of casing protection
|Scope of voltage||8..24V DC||