diff --git a/cfg/dil4_test_cfg.py b/cfg/dil4_test_cfg.py
index df51b90f..b66d2ed3 100644
--- a/cfg/dil4_test_cfg.py
+++ b/cfg/dil4_test_cfg.py
@@ -77,4 +77,24 @@ Mod('pump',
     addr='rotary_pump_He3',
     upper_LN2='upperLN2',
     lower_LN2='lowerLN2',
+    )
+
+Mod('io_flow',
+    'frappy_psi.bronkhorst.IO',
+    '',
+    uri='dil4-ts:3002',
+    )
+
+Mod('flow',
+    'frappy_psi.bronkhorst.Sensor',
+    'flow',
+    io='io_flow',
+    value=Param(unit='ln/min'),
+    )
+
+Mod('fun',
+    'frappy_psi.softcal.Function',
+    'modified flow',
+    rawsensor='flow',
+    formula='x',
     )
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