Insulation Resistance

Page Title: Insulation Resistance
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Figure 9. Heater probe control circuit.

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TB-9-4920-454-35 Tester Exhaust Gas Temperature Howell Instruments Inc. Model BH112JB-( ) Manual

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Figure 11. Insulation resistance and resistance check.

TB 9-4920-454-35

NOTE

R5 and R17 interact. Repeat a (19) through (25) above until

specifications are met.

Figure 10. Probe control and function switch board.

13. Insulation Resistance

a. Performance Check

(1) Disconnect heater probes and heater cable from TI.

(2) Set FUNCTION SELECT switch to INSUL. INSULATION RESISTANCE

meter should indicate infinity.

(3) Connect equipment as shown in figure 11.