Perma Pure Baldwin-Series M325 - Manual (Page 9)

Section F: LED Indicators 9
F: LED I
NDICATORS
The Model M325 has two green and one red LED operating indicators. These
indicators are arranged vertically on the front of the cooler. The bottom green LED
indicates the READY operating temperature status, normally set for 10
° C (50 ° F).
After the set-point temperature is reached, the sample pump may be turned on by
other devices. When the impinger temperature is below 10
° C (50 ° F) the ready LED
will be on. Above this temperature, the ready LED will be off. The middle green
LED (applicable when the alarm relay option is installed) is ON when there is NO
water carry over and OFF when there IS water carry over. The red LED at the top is
the thermocouple failure indicator. When this occurs, the red LED stays illuminated.
The M325 Modular cooler has an analog voltage output. This output is factory
standard at 0-2.5 VDC = 0-25
° C. The connector for this output is located on the
bottom of the cooler. It is labeled “Analog Out” (TB1).