LB-762 Controller Installation Manual
LAB-EL
conditions prevailing in the room. Another function of the second psychrometer may be measurement of air parameters
in air intake channel for regulation of humidity and temperature of air flowing into the hall.
• Cooler temperature – single thermometer advising the regulator of cooler work.
• Heater temperature – single thermometer advising the regulator of heater work.
• Air supply temperature – optional single thermometer advising the regulator of temperature of air supplied to the air-
conditioning tunnel (before the cooler). Application of this thermometer is optional.
• Base temperature – 6 thermometers used for measurement of temperature of base in different places of the hall. It is not
required to attach all 6 thermometers – the regulator correctly cooperates with any number of attached thermometers –
from 1 to 6, depending on the requirements of the given installation.
• CO
2
concentration – for CO
2
measurement, it is necessary to attach a separate dedicated CO
2
concentration meter. It is
possible to connect for each regulator a dedicated CO
2
meter (separate meter for each hall), or use one CO
2
meter for
more than one hall (what permits reduction in the cost of the installation). Detailed description further the manual.
• External hytherograph – to ensure better operation of mechanisms controlling climate in the cultivation hall, the regulator
may use information about external air parameters flowing into the air-conditioning tunnel. This allows for using directly
the properties of this air (enthalpy and humidity mass) to control climate in the hall, without use of executive devices
of air-conditioning tunnel, what may reduce energy consumption. It is possible to connect to each regulator a separate
hytherograph, or apply one hytherograph for the whole system (what permits reduction in the cost of the installation,
as parameters of external air are normally common for all three halls and individual measurement for each hall is not
reasonable). Application of this meter is optional.
1.3
Executive equipment
Rysunek 1.2: Executive equipment
• Heating, cooling, moistening, initial heater valves, initial cooler, steam valves – are controlled by servomotors (some
outputs are optional and may not occur in the given installation).
• Ventilation – the fan is used to provide air circulation, its motor is controlled by an appropriate frequency converter
(inverter). The frequency inverter is an external device, which is appropriately controlled by the regulator.
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