fixes on small furnace

cfg/vf_cfg.py

@@ -88,16 +88,13 @@ Mod('interlocks',
     vacuum_limit = 0.1,
    )
 
-Mod('p_io',
-    'frappy_psi.pfeiffer.IO',
-    'pressure io',
-    uri='serial:///dev/ttyUSBlower',
-   )
-    
 Mod('p',
-    'frappy_psi.pfeiffer.Pressure',
+    'frappy_psi.ionopimax.LogVoltageInput',
     'pressure reading',
-    io = 'p_io',
+    addr = 'av1',
+    rawrange = (1.8, 8.6),
+    valuerange = (1e-7, 1000),
+    value = Param(unit='mbar'),
    )