Intek 200 - Manual (Page 20)

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1. The transducer continuity check is performed as follows (see Figure 6-A):
A. Disconnect the transducer cable from the transmitter.
B. Make resistance measurements between the cable pairs as shown in Figure 6-A. The
readings should be as indicated; if not, consult factory for repair.
2. The transducer isolation check is performed as follows (see Figure 6-B):
A. Disconnect the transducer cable from the transmitter.
B. Make the circuit connections illustrated in Figure 6-B.
C. Probe all the conductors and note the voltage with respect to the instrument flow tube or
probe shaft. All readings should be less than 0.5 Vdc.
3. The sensor input to flow output of the electrical circuit is checked as follows (see Figure 6-C):
A. Construct the dummy transducer as illustrated in Figure 6-C. Select R2* and R3* for
approximate ‘TEMP’ value.
B. Turn off power to the unit.
C. Disconnect the transducer cable from the instrument.
D. Connect the dummy transducer to the instrument input.
E. Restore power.
F. Set both the top and bottom display lines to the ‘TIME’ field and simultaneously press
the TOP LINE SCROLL and BOTTOM LINE SCROLL buttons. ‘TEMP’ and ‘)T’ fields
should appear on the top and bottom display lines.
G. Adjust R1* (fine) for ‘)T’ value.
H. Compare the measured flow rate and the indicated flow rate to original calibration data
SECTION 6. Recheck ‘TEMP’ and ‘)T’.
*resistors of transducer simulator