TOTALINE MultiRef User Manual

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9
ENGLISH
4 USING MULTIREF UNIT
4.1 Setting SuperHeating
By means of the
key, it is possible to display alternately the value of the temperature
measured by T1 probe or the value of SuperHeating calculation.
4.2 Setting SubCooling
By means of the
key, it is possible to display alternately the value of the temperature
measured by T2 probe or the value of SubCooling calculation.
4.3 Setting T2-T1
By means of the
key, it is possible to display alternately the value of the temperature
measured by Tamb probe or the value of T2-T1 calculation.
4.4 Display back-lighting
By means of the
key, you can activate the display back-lighting. The device turns off
automatically after 16 seconds (this parameter may be set by the user, see chapter 5 for
more information), or by pressing the
key a second time.
4.5 “Zero Plus” Function - Atmospheric Pressure Calibration
MultiRef manifold has a special function called “Zero Plus” - Atmospheric Pressure Calibra-
tion. This function must be used when one wants to know with the utmost accuracy the
reading values of pressure near zero.
To perform this operation, it is necessary to bring the inner pressure of MultiRef to the atmo-
spheric value and press the
key for more than 4 seconds; the message “done” on the
display means that the operation has been successful.
WARNING
If the above function is performed with a different instrument inner pressure than the atmo-
spheric one, this could cause an incorrect calibration of the instrument.
Therefore, perform this function with open knobs, in connection with the atmosphere.
5 SERVICE OPERATIONS.
5.1 Modifying MultiRef parameters
MultiRef has an inner series of parameters, that handle its functioning. These parameters
can be modified by the user in order to personalize the instrument according to his own
needs.
To enter the menu of parameters configuration, press the
key for more than 3 seconds.
The message “tOFF” in the refrigerant range means that you are inside the parameters
menu.
Parameter
name
Description Default value Range
tOFF Time of instrument self-turning off 300 seconds (OFF) 10 ÷ 3600
t bL Time of display back-lighting self-turning off 16 seconds (OFF) 10 ÷ 255
tLOG Time of data transfer to Datalogger 16 seconds 10 ÷ 3600

TOTALINE MultiRef Specifications

General

Brand	TOTALINE
Model	MultiRef
Category	Measuring Instruments
Language	English