frappy_psi.furnace: special classes PTXgauge and PRtransmitter

move some initialization from cfg file to source code
+ make 'out of calibrated range' and 'sensor break' more generic

Change-Id: I3e92100fdb9c983f82665de9d8e063609cd7af5a

cfg/fi_cfg.py

@@ -4,18 +4,18 @@ Node('fi.psi.ch',
      )
 
 Mod('T_main',
-    'frappy_psi.ionopimax.CurrentInput',
+    'frappy_psi.furnace.PRtransmitter',
     'sample temperature',
     addr='ai1',
-    valuerange=(0, 1372),
+    valuerange=(0, 2300),
     value=Param(unit='degC'),
     )
 
 Mod('T_extra',
-    'frappy_psi.ionopimax.CurrentInput',
+    'frappy_psi.furnace.PRtransmitter',
     'extra temperature',
     addr='ai2',
-    valuerange=(0, 1372),
+    valuerange=(0, 2300),
     value=Param(unit='degC'),
     )
 
@@ -28,6 +28,22 @@ Mod('T_wall',
     value=Param(unit='degC'),
     )
 
+Mod('T3',
+    'frappy_psi.furnace.PRtransmitter',
+    'extra temperature',
+    addr='ai3',
+    valuerange=(0, 1372),
+    value=Param(unit='degC'),
+    )
+
+Mod('T4',
+    'frappy_psi.furnace.PRtransmitter',
+    'extra temperature',
+    addr='ai4',
+    valuerange=(0, 1372),
+    value=Param(unit='degC'),
+    )
+
 Mod('T',
     'frappy_psi.picontrol.PI',
     'controlled Temperature',
@@ -77,7 +93,7 @@ Mod('flowswitch',
 #     )
 
 Mod('p',
-    'frappy_psi.ionopimax.LogVoltageInput',
+    'frappy_psi.furnace.PKRgauge',
     'pressure reading',
     addr = 'av1',
     rawrange = (1.82, 8.6),
@@ -89,5 +105,5 @@ Mod('vso',
     'frappy_psi.ionopimax.VoltagePower',
     'voltage power output',
     target = 24,
-    export = False,
+    # export = False,
    )