MKS390 vacuum gauge driver. Currently gets pressure readings but IG ON/OFF and many other functions have not been implemented.

1 files changed, 110 insertions, 0 deletions

diff --git a/qolab/hardware/vacuum_gauge/mks390.py b/qolab/hardware/vacuum_gauge/mks390.py
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+++ b/qolab/hardware/vacuum_gauge/mks390.py
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+"""
+Module: MKS Granville-Phillips 390 Micro-Ion Gauge Control
+Description: This module provides a class to interface with the 
+             MKS Granville-Phillips 390 Micro-Ion Gauge
+             using pyvisa.
+
+Author: Mykhailo Vorobiov
+Email: mvorobiov@wm.edu
+Date Created: 2024-10-22
+Date Updated: 2024-11-05
+"""
+
+from qolab.hardware.basic import BasicInstrument
+from qolab.hardware.scpi import SCPIinstr 
+import pyvisa
+import numpy as np
+import logging
+import time
+
+
+class MKS390(SCPIinstr):
+    """
+    A class for interfacing with the MKS Granville-Phillips 390 Micro-Ion Gauge
+    for vacuum measurements between 1e-11 and 1e+3 Torr.
+    """
+
+    def __init__(self, resource, gauge_id = '#02', *args, **kwds):
+        """
+        Initialize the vacuum gaguge class
+        """
+        super().__init__(resource, *args, **kwds)
+        self.resource = resource
+        self.resource.baud_rate = 19200
+        self.resource.timeout = 5000
+        self.resource.read_termination = '\r'
+        self.resource.write_termination = '\r'
+
+        self.write = self.resource.write
+        self.read = self.resource.read
+        self.read_raw = self.resource.read_raw
+
+        self.ignition_status = False
+        self.id = gauge_id
+
+        self._read_ignition_status()
+
+    def enable_ignition(self, ig_status=False):
+        self._read_ignition_status()
+        if not(self.ignition_status == ig_status):
+            try:
+                # Sending a command
+                command = self.id + 'IG 0'
+                self.write(command)
+                self.ignition_status = ig_status
+                print(f"[INFO] Vacuum gauge ignition status changed to: {self.ignition_status}")
+            except pyvisa.VisaIOError as e:
+                print(f'[ERROR!] Failed to change vacuum gauge ignition status.\n\t{e}')
+        else:
+            print(f'[WARNING] No change to vacuum gauge ignition status: {self.ignition_status}')
+
+    def get_ignition_status(self):
+        self._read_ignition_status()
+        return self.ignition_status
+    
+    def _read_ignition_status(self):
+        try:
+            # Sending a command
+            command = self.id + 'IGS'
+            self.write(command)
+            time.sleep(0.01)
+            self.ignition_status = bool(self.read_raw(8).strip().split()[1])
+            return self.ignition_status
+        except pyvisa.VisaIOError as e:
+            print(f'[ERROR!] Failed to read vacuum gauge ignition status.\n\t{e}')
+
+    def get_pressure(self):
+        try:
+            # Sending a command
+            command = self.id + 'RD'
+            self.write(command)
+            # Waiting and reading the response
+            time.sleep(0.01)
+            response = float(self.read_raw(14).strip().split()[1])
+            return response
+        except pyvisa.VisaIOError as e:
+            print(f'[ERROR!] Failed to get vacuum gauge reading.\n\t{e}')
+            return 0.0
+
+'''    
+    def close(self):
+        """
+        Close the connection to the vacuum gauge.
+        """
+        if self.gauge:
+            try:
+                self.gauge.close()
+                self.logger.info("Connection to the vacuum gaguge closed.")
+            except pyvisa.VisaIOError as e:
+                self.logger.error(f"Error closing connection to the vacuum gauge: {e}")
+'''
+# Example usage
+if __name__ == '__main__':
+    import pyvisa
+
+    rm = pyvisa.ResourceManager()
+
+    gauge = MKS390(rm, 'visa://192.168.194.15/ASRL13::INSTR', gauge_id='#02') 
+    pressure = gauge.get_reading()
+    gauge.close()
+    print(pressure)
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