diff --git a/site_ansto/instrument/hrpd/echidna_configuration.tcl b/site_ansto/instrument/hrpd/echidna_configuration.tcl
index 5f897e26..1bd9ed95 100644
--- a/site_ansto/instrument/hrpd/echidna_configuration.tcl
+++ b/site_ansto/instrument/hrpd/echidna_configuration.tcl
@@ -1,5 +1,5 @@
-# $Revision: 1.17 $
-# $Date: 2007-03-02 21:50:28 $
+# $Revision: 1.18 $
+# $Date: 2007-03-05 10:02:54 $
 # Author: Ferdi Franceschini (ffr@ansto.gov.au)
 # Last revision by: $Author: ffr $
 
@@ -56,4 +56,9 @@ detector_zero_xpixel 127
 VarMake detector_zero_ypixel Float User
 detector_zero_ypixel 255.5
 
+detector_type He-3 position sensitive detector, tube active length=335+/-5mm, tube diameter=25.4 +/- 0.8mm
+detector_type lock
+
+detector_description 128 He-3 proportional counter detector tubes (GE Energy Reuter Stokes Inc. item=RS-P4-0814-217)
+detector_description lock
 fileeval extraconfig.tcl