Emerson 396RVP instruction manual Sensors. For code 01, replace sensor

MODEL 396R pH/ORP	SECTION 7.0
	DIAGNOSTICS AND TROUBLESHOOTING

7.2TROUBLESHOOTING WITHOUT DIAGNOSTICS. Table 7-2 lists common problems, causes and remedies typically encountered in process measurement.

TABLE 7-2. Troubleshooting without Diagnostics

Problem	Probable Cause	Remedy
Meter reads off scale. (Display	Defective preamplifier.	Replace preamplifier (for code 02
reads overrange).		sensors). For code 01, replace sensor.
	T.C. element shorted.	Check T.C. element as instructed
		in Section 6.5 and
		replace sensor if defective.
	Sensor not in process or sample	Make sure sensor is in process with
	stream is low.	sufficient sample stream (refer to
		Section 2.0 for installation details).
	Open glass electrode.	Replace sensor.
	Reference element open - no contact.	Replace sensor.
Display reads between 3 and 6 pH	Electrode cracked.	Replace sensor.
regardless of actual pH of solution
or sample.
Meter or display indication swings	T.C. element shorted.	Check T.C. element as instructed
or jumps widely in AUTO T.C. Mode.		in Section 6.5 and replace
		sensor if defective.
Span between buffers extremely	T.C. element open.	Check T.C. element as instructed
short in AUTO T.C. Mode.		in Section 6.5 and replace sensor
		if defective.
Sluggish or slow meter indication	Electrode coated.	Clean sensor as instructed in
for real changes in pH level.		Sections 6.3 or 6.4. Replace
		sensor if cracked.
	Electrode defective.	Replace sensor.
Transmitter cannot be standardized.	Electrode coated or cracked.	Clean Sensor as instructed in
		Sections 6.3 or 6.4 Replace
		sensor if cracked.
	Defective preamplifier.	Replace preamplifier.
Transmitter short spans between	Aged glass electrode or high	Replace sensor.
two different buffer values.	temperature exposure.
	Electrode coated .	Clean Sensor as instructed in
		Sections 6.3 or 6.4. Replace
		sensor if cracked.

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