Do calibration temperature transmiter area RM total 2 unit 364 SR1 T2-364 RM T1; 364 FN3 T1-364 FN3 T2; 364 FN4 T1-364 FN4 T2; 424 FN1 T1-424 FN1 T2 replace with Endess Hauser-424 FN1 T3 for zero 0  degree celcius and span 150 degree celcius result ok ( MUHIB & ADI & CIVA SUPRIYADI )