digital conductivity meter service manual

DIGITAL CONDUCTIVITY METER SERVICE MANUAL

6.0 TROUBLE SHOOTING CHART

MALFUNCTION PROBABLE CAUSE CORRECTIVE ACTION

Meter does not zero Contaminated Probe Clean thoroughly

with isopropyl

alcohol and air dry

Needs zero adjustment Adjust zero as per 7.2.

Meter reads above or Needs CAL adjustment Check Pre-amp output below calibration as per 7.0

number during CAL check

CU reading erroneous Contaminated or Clean probe with when CAL check is okay damaged probe. isopropyl alcohol

and air dry

Inspect probe for

physical damage.

Check electrical

characteristics as

per 7.0

No Display Indication Lack of supply Check connection and/or

voltage replace batteries

MEASURE/CAL switch Replace Display PC Bd.

defective P/N 152-03-0000

A-D Converter Replace A-D PC Bd.

defective P/N 152-05-0000

+/- 5 Supply In-op Replace Display PC Bd.

P/N 152-03-0000

7.0 CALIBRATION

7.1 With the back panel removed set R-18 (case hole marked CAL) to approximately mid scale. The exact setting is not important at this time, however, the voltage at A-15 should be approximately 1.0 volts above the zero reference (A-14).

7.2 Remove the probe if attached and depress the measure switch (M). Adjust

R-19 (case hole marked ZERO) for a display of 000 +/- 1.

The information contained in the accompanying document is proprietary and confidential, and may not be copied in any manner whatsoever without prior written consent of Emcee Electronics,

Inc. The document and the material therein may not be used for any purpose other than that intended by Emcee Electronics, Inc.

COPYRIGHT 2002 EMCEE ELECTRONICS, INC.

REVISION DATE: FEBRUARY 23, 1996

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