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Troubleshooting
23
4.2
Testing Electronic Unit
This test is only a test of the electronic unit for troubleshooting
purposes, and does not serve as a Verify or Certify test of the
complete system.
Use the following steps to test the electronic unit:
1. Be sure the environment is safe before removing the lid from
the housing.
2. If possible to access the sensing element with the material
below the sensor, or remove the IntelliPoint from the vessel,
use your finger to touch TP1 (Shown in Figure 2-4) while
holding any bare metal portion of the instrument housing
with the other hand. The system should go to its high level
state.
3. Again with no material touching the sensing element, touch
the tip of the sensing element with your finger, while holding
any bare metal portion of the instrument housing with the
other hand. The system should go to its high level state.
4. If the IntelliPoint changes to the high level state while
touching test point TP 1, but not when touching the tip of
the sensor, in most cases, the interconnecting cable is faulty.
See Section 4.6: Testing Integral Cable, or Section 4.7
Testing Remote Cable.
5. If The IntelliPoint is stuck in one state:
A. Remove power.
B. Disconnect coax cable that joins sensing element to
electronic unit.
C. Apply power.
D. Repeat steps 3 and 4.
E. If The IntelliPoint changes state with sensing element
disconnected, in most cases, sensing element is faulty.
See Section 4.5: Testing Sensing Element.
6. If there was no action in any of steps 2, 3, or 4:
A. Remove and then reapply power.
B. Press ReCal Button (
Shown in Figure 2-4
).
C. Observe that green LED flashes for about 60 seconds.
D. Green LED should be lit after 60 seconds.
E. Touch test point (
Shown in Figure 2-4
) with your
finger.
F. Alarm & Loop Current should change state. If so, circuit
board is working properly.
G. Reinstall instrument and press ReCal Button.
7. If The IntelliPoint fails all of above tests, in most cases
instrument is faulty. Use a replacement Input/Output
Module (IOM) or circuit board to determine fault.
Consult
factory
.
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 ...