Veris Technologies MSP EC and pH (1997-2008 CF card drive 1.10M) - Operating Instructions - Manual (Page 15)

Veris Technologies
Pub. #OM MSP03-1
15
SEE GENERAL INFORMATION SECTION FILE MANAGEMENT FOR INSTRUCTIONS ON
DOWNLOADING DATA
Maintenance and Lubrication
Proper maintenance and lubrication of the Veris MSP will allow you to collect high quality EC data
and greatly extend the useful life of the unit. Veris Technologies strongly suggests that you follow the
following guidelines:
MAINTENANCE: Electrical Continuity and Isolation
It is advisable to perform this test on a routine basis (weekly or every 20-25 hours of data collection)
to ensure you are obtaining reliable data.
1) Coulter electrode isolation – check so see that no metal part of the any coulter
electrode is in contact with the implement frame. This may be by visual inspection or by
connecting one lead of an ohmmeter to the individual coulter electrode, and the other to a
grounded fastener on the frame. If the coulter electrode is properly isolated, no reading
will be obtained. Make sure that all electrode coulter clamp bolts are properly tightened to
prevent lateral movement of the coulter electrode.
2) Signal Continuity – To properly measure conductivity, good electrical signal continuity
must be present from the coulter electrode to the instrument. The Implement Test Box
(Part No. 10759) allows you to quickly check this.
Use the following method:
a) Connect the signal cable to the terminal on the test box.
b) Touch one lead of an ohmmeter to the #1 coulter blade (left hand, standing behind
the unit) and the other lead to the #1 terminal on the test box. A reading of less than
2 ohms is normal.
no
continuity
grounded
bolt
coulter
terminal