LumaSense Technologies ISR 6 Advanced - Manual (Page 16)

ISR 6 Advanced Manual Controls and Installation · 16
The connector pin J can be used for 3 different functions:
1. External clearing of the maximum value storage:
When the pyrometer is in operating mode, pin J can be used for external clearing of
maximum value storage. When external clearing is selected from the t
clear
dropdown
menu, pin J is connected for a short time to pin K (power supply voltage) to clear the
stored maximum value.
The function “external clearing” is triggered with the following conditions:
·
The clear time is set to “extern”.
· The “dirty window” warning system is switched off. This can be done through the
InfraWin software in the “color-bar” window.
· The warning level “dirty window” must be set to 0%.
2. Hold function:
When the hold function mode is activated, the current temperature reading is frozen as
long as pin J and pin K are connected. (See section 4.6 for clear time for the maximum
value storage).
3. “Dirty Window” Warning system:
The pyrometer is equipped with a “dirty window” warning system. The accuracy of the
pyrometer will be seriously affected if the lens is not clean and the sight path is obscured
by dirt, process material, smoke or steam (this can also happen if the object is smaller
than the spot size of the pyrometer).
To avoid incorrect measurements, a warning signal can be set to detect when the signal
level becomes too low or reaches a certain level. When activated, a built in relay (max.
continuous current 0.4 A) connects pin J to pin K (power supply voltage).
The setting of the warning level (0 to 99%) can be done through the “color-bar”
window of the InfraWin software. If the warning level “dirty window” is set to 0%
(factory setting), the “dirty window” warning system is switched off and pin J can
perform one of the functions of “external clearing” or “hold”.
The “dirty window” warning system is triggered with the following conditions:
· The clear time is not set to “extern” or “hold”.
· The pyrometer is operating in “2-color mode”.
3.1.2 Connecting the pyrometer to a PC
The pyrometer is equipped with an RS485 serial interface. With the RS485, long transmission
distances can be realized and the transmission is, to a large extent, free of problems. The RS485
also allows several pyrometers to be connected in a bus system.
If an RS485 connection is not available at the PC, it can be accomplished using the RS485 to USB
connector. When using a RS485 to USB adapter, make sure that the adapter is fast enough to
receive the pyrometer’s answer to an instruction of the master. Most of the commonly used
adapters are too slow for fast measuring equipment, so it is recommended to use the
LumaSense adapter (order no. 3 826 720).