import numpy as np
import epics

from epics import caget, caput, cainfo

threshold = 1e-6

monitor_ch = 'SATES21-VM-VT4010:PRESSURE'


current_ch = caget(monitor_ch)

while current_ch > 1e-6:
    current_ch = caget(monitor_ch)
    print('value checked and it is : ' , current_ch)