digital conductivity meter service manual

DIGITAL CONDUCTIVITY METER SERVICE MANUAL

7.3 Attach the CU substitution box directly to the conductivity meter using the 500 CU position.

7.4 Depress the measure switch (M) and adjust R-18 (CAL) for a display reading of 500 +/- 1.

7.5 Remove the substitution box and repeat the zero adjustment (7.2) if necessary. If zero adjustment is necessary repeat 7.3 and 7.4 after readjusting zero.

7.6 Attach the CU substitution box to the conductivity meter using the 100

CU position.

7.7 Depress the measure switch (M) and read the display for linearity. The display should read 100 +/- 1. If the display is outside of tolerance recheck zero and 500 CU positions.

7.8 Remove the plug from the unmarked hole in the case (between the ZERO and

CAL holes) to access R-20 (CAL reference).

7.9 Depress the calibrate switch (C) and adjust R-20 (Cal reference voltage) for a display or 400 +/- 1.

7.10 Replace the plug removed in step 7.8 (no additional adjustment of R-20 is necessary).

7.11 The instrument is now electrically standardized and should read ZERO =

000 +/- 001, CAL = 400 +/- 001, 500 CU BOX = 500 +/- 001 and 100 CU BOX = 100

+/- 001.

7.12 The meter is then adjusted to the probe for proper fuel measurements.

Identify the probe constant by locating the number stamped on the probe (Fig.

3). Multiply that number by 10 and adjust R-18 (CAL) for that number.

Example: Probe No. = 42 x 10 = 420

CAL adjust to 420 +/- 001

7.13 The meter is now properly calibrated for fuel measurements. Refer to section 8.0 for operating procedure.

8.0 TEST PROCEDURE

8.1 Attach probe to bottom connector on the conductivity meter.

8.2 Depress measure switch (M) with probe OUT of fuel sample. Reading should be 000 +/- 001 in approximately 3 seconds (Figure 4). If reading is outside limits remove probe and recheck zero by depressing measure switch.

8.2.2 If zero reading is outside of limits with probe removed, perform calibration procedure outline in section 7.0.

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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