The switching thresholds are in accordance with the values for alarm 1 and 2 [►5.6 Alarms]. 
The alarm values are set according to the ►1.6 Factory Default Settings. 
To make advanced settings (change of low- and high alarm) a digital interface (USB, RS232) 
and the software is needed. 
 
 
5.4  Functional Inputs (not for CT 4M) 
The three functional inputs F1 – F3 can be programmed with the software only. 
 
trigger (a 0 V level on F1 resets the hold functions) 
external emissivity adjustment [0–10 V: 0 V ► ε = 0,1;  9 V ► ε = 1;  10 V ► ε = 1,1] 
external compensation of ambient temperature/ the range is scalable via software 
[0–10 V ► -40–900 °C / preset range: -20–200 °C] 
emissivity (digital choice via table) 
 
A non-connected input represents: 
F1 = High | F2, F3 = Low. 
[High level: ≥ +3 V…+36 V | Low level: ≤ +0,4 V…–36 V] 
 
 
 
 
 
 
w ww . . co m
information@itm.com1.800.561.8187