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Troubleshooting
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the vessel. Verify the CoteShield element extends at
least 2” into the vessel and past wall build-up.
ii. Extremely conductive coating on the sensing element.
This may require changing the sensing element or
electronics. Contact the factory for recommendations.
iii. Sensing element is touching vessel. A resistance
reading of less than 10 ohms to ground (sensing
element housing or tank) is usually due to a metal-to-
metal short circuit. Verify that the sensing element
is not touching any vessel structure.
c. If the sensing element still shows resistance between
terminals of less than 10K ohms, it is possible that
moisture is present internal to the sensing element. It
may be possible to dry the sensing element until the
resistance increases to a value in excess of 10K ohms.
However this is an indication the integrity of the sensing
element has been compromised. Contact the factory for
recommendations.
4.5
Testing The Sensing Element (Continued)
1
A digital ohmmeter will often produce a resistance measurement
that is higher than the actual value.
Figure 4-1
Checking the Sensing Element
Summary of Contents for IntelliPoint RF RNT Series
Page 4: ...Contents ...
Page 6: ...Section 1 ...
Page 37: ...Troubleshooting 31 Section 5 ...
Page 41: ...Control Drawings 35 6 1 FM FMc Control Drawings Continued ...
Page 42: ...RNTXX IntelliPoint RF Series User s Manual 36 6 1 FM FMc Control Drawings Continued ...
Page 43: ...Control Drawings 37 6 1 FM FMc Control Drawings Continued ...
Page 44: ...RNTXX IntelliPoint RF Series User s Manual 38 6 1 FM FMc Control Drawings Continued ...
Page 45: ...Control Drawings 39 6 1 FM FMc Control Drawings Continued ...
Page 46: ...RNTXX IntelliPoint RF Series User s Manual 40 6 1 FM FMc Control Drawings Continued ...
Page 51: ...Control Drawings 45 6 1 FM FMc Control Drawings Continued ...
Page 52: ...RNTXX IntelliPoint RF Series User s Manual 46 6 1 FM FMc Control Drawings Continued ...
Page 56: ...RNTXX IntelliPoint RF Series User s Manual 50 6 2 ATEX Control Drawings ...
Page 57: ...Control Drawings 51 6 2 ATEX Control Drawings Continued ...
Page 66: ...RNTXX IntelliPoint RF Series User s Manual 60 6 4 IECEx Control Drawings ...
Page 67: ...Control Drawings 61 6 4 IECEx Control Drawings Continued ...
Page 75: ...Control Drawings 69 6 5 Mounting and Wiring for Spark Protector Drawings ...
Page 77: ...Control Drawings 71 6 5 Mounting and Wiring for Spark Protector Continued ...
Page 78: ...RNTXX IntelliPoint RF Series User s Manual 72 6 6 Adding a Padded Capacitor ...
Page 79: ...Control Drawings 73 6 6 Adding a Padded Capacitor Continued ...
Page 80: ...RNTXX IntelliPoint RF Series User s Manual 74 6 6 Adding a Padded Capacitor Continued ...
Page 81: ...Control Drawings 75 6 7 Dual Seal Assembly for 700 Series Sensing Elements ...
Page 82: ...RNTXX IntelliPoint RF Series User s Manual 76 6 7 Dual Seal Assembly Continued ...
Page 83: ...Control Drawings 77 6 7 Dual Seal Assembly Continued ...
Page 84: ...Appendix A ...