Table of Contents
Advertisement
RMTXX1 Series - IntelliPoint RF™ Instruction Manual
5.2
Testing The Electronic Unit
WARNING:
If the IntelliPoint instrument is located in a hazardous
environment, do not open enclosure cover or make/break any
electrical connections without first disconnecting electrical
power at the source. Ensure that wiring, electrical fittings,
and conduit connections conform to electrical codes for the
specific location and hazard level.
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 alarm 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
alarm state.
4. If the IntelliPoint changes to the alarm 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 5.5: Testing Integral Cable
5. If the IntelliPoint changes state while touching test
point, but not when touching tip of sensor, in most cases,
integral cable is faulty. Refer to Section 5.5 Testing
Integral Cable.
6. 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 IntelliPoint changes state with sensing element
disconnected, in most cases, sensing element is faulty.
Refer to Section 5.4 Testing Sensing Element.
7. Disconnect probe cable form Circuit board.
8. Set time delay calibration deadband adjustment to full
counter-clockwise position.
9. Turn calibration adjustment clockwise until the red LED
changes.
26
Advertisement
Table of Contents
