Mercury Relay Contact Resistance using SCXI 1127

[Vijay shah]

I am trying to measure Resistance on PWBA with Mercury Relays using SCXI 1127, 1331 connector block and DMM 4060. I am using 2 wire mode. The Mercury Relays have 0.25 Ohm contact resistance. The readings measurements fluctuates and are high measuring from 0.7 to 1.5 ohms. I would like to know what is the contact resistance of SCXI 1127 Relays and any suggestion to improve measurements. Why the measurements fluctuates every time. Do you think any common grounding considerations or programming changes can be done to improve. Any suggetions ? Thanks.

[Greg Caesar]

Looks like this message is a duplicate. For those looking for the answer, please follow the other discussion thread at the link below:

http://exchange.ni.com/servlet/ProcessRequest?RHIVEID=101&RPAGEID=135&HOID=506500000008000000AF3E0000&USEARCHCONTEXT_CATEGORY_0=_200_&USEARCHCONTEXT_CATEGORY_S=0&UCATEGORY_0=_200_&UCATEGORY_S=0