MKS390 vacuum gauge returns NaN if fails to get pressure reading

1 files changed, 5 insertions, 3 deletions

diff --git a/qolab/hardware/vacuum_gauge/mks390.py b/qolab/hardware/vacuum_gauge/mks390.py
index 8556001..402af2e 100644
--- a/qolab/hardware/vacuum_gauge/mks390.py
+++ b/qolab/hardware/vacuum_gauge/mks390.py
@@ -14,7 +14,6 @@ from qolab.hardware.basic import BasicInstrument
 from qolab.hardware.scpi import SCPIinstr 
 import pyvisa
 import numpy as np
-import logging
 import time
 
 
@@ -30,6 +29,8 @@ class MKS390(SCPIinstr):
         """
         super().__init__(resource, *args, **kwds)
         self.resource = resource
+
+        #self.config["Device model"] = "MKS 390"
         self.resource.baud_rate = 19200
         self.resource.timeout = 5000
         self.resource.read_termination = '\r'
@@ -42,7 +43,7 @@ class MKS390(SCPIinstr):
         self.ignition_status = False
         self.id = gauge_id
 
-        self._read_ignition_status()
+        #self._read_ignition_status()
 
     def enable_ignition(self, ig_status=False):
         self._read_ignition_status()
@@ -73,6 +74,7 @@ class MKS390(SCPIinstr):
         except pyvisa.VisaIOError as e:
             print(f'[ERROR!] Failed to read vacuum gauge ignition status.\n\t{e}')
 
+    #@BasicInstrument.tsdb_append # The function does not work with the decorator (need to work on it later)
     def get_pressure(self):
         try:
             # Sending a command
@@ -84,7 +86,7 @@ class MKS390(SCPIinstr):
             return response
         except pyvisa.VisaIOError as e:
             print(f'[ERROR!] Failed to get vacuum gauge reading.\n\t{e}')
-            return 0.0
+            return np.nan()
 
 '''    
     def close(self):