Cole-Parmer 19101-10 Instruction Manual

MODEL 19101-10

Digital Conductivity Meter

Operations Manual

Date:__________________________

Serial No.:_____________________

Dwg. No.:______________________

Calibration By:__________________

COLE PARMER INSTRUMENT COMPANY TEL [phone] [phone]
625 East Bunker Court
Vernon Hills, IL 60061-1844 USA

Printed in U.S.A. 08/98, 04/01

TABLE OF CONTENTS

Page

Shipping Checklist .....................................................................3

Cells and Accessories .....................................................................3

Calibration Solutions .....................................................................3

Introduction .....................................................................4

Brief Circuit Description .....................................................................4

Operation .....................................................................4

Placement of Instrument .....................................................................4

Specifications .....................................................................5

Front & Rear Panel Diagram .....................................................................6

Intro to Conductivity .....................................................................7

Power Entry Module .....................................................................7

Calibration .....................................................................8

Calibration Frequency.....................................................................8

Making Measurements .....................................................................8

Cell Constant .....................................................................8

Total Dissolved Solids .....................................................................9

Troubleshooting .....................................................................9

Conductivity Cells .....................................................................9

Cells Continued ...................................................................10

Cleaning Cells ...................................................................10

Micro Flow Cell ...................................................................10

Conductivity Standards ...................................................................11

Reference Literature ...................................................................11

Return of Items ...................................................................11

Maintenance ...................................................................11

Warranty Information ...................................................................12

Calibration Data ...................................................................13

SHIPPING CHECKLIST

Upon receipt the instrument should be carefully unpacked and inspected for shipping damage.
All material in the container should be checked against the enclosed packing list. If the
instrument has been damaged in transit, retain all packing material and carton. Contact the
carrier to file a damage claim.

MODEL 19101-10 Packing includes the following:

1- Model 19101-10 Digital Conductivity Meter
1- U.S. Standard Power Cord (removable)
1- Pint 718 µS conductivity standard solution
2- Fuses (1/16 amp) for optional 230 VAC operation
1- Analog Recorder Output Connector
1- Operation Manual

CELLS AND ACCESSORIES

Order Cells separately
Five pin connector Cells with embedded thermistor
Cell constant approximately 10 cm−↑

Au cells are best suited for high purity solutions
Multipurpose cells are combination dip or flow

P/N 01481-62 Dip Cell (Au) with 1 meter (39") cable
P/N 01481-64 Dip Cell (Pt) with 1 meter (39") cable
P/N 19101-50 Multipurpose (Au) with 1 meter (39") cable
P/N 19101-52 Multipurpose (Pt) with 1 meter (39") cable
P/N 01481-66 Micro Flow Cell (cell constant 100 cm−↑)

P/N 19100-50 Cell Connector with 6K Thermistor and 1 meter Cable

(For user fabrication of custom cell)

P/N 01481-11 Platinizing Station for re-platinizing (Pt) cells

(does not include Platinizing Solution)

CALIBRATION SOLUTION

Please see our General Catalog for Conductivity Standards available.

INTRODUCTION

Page 3

The Model 19101-10 is a bench top, line power instrument designed for the measurement of
Conductivity covering six ranges from 0 to 199.9 milli Siemens (mS). The bright red 3 ½ digit
L.E.D. display has a floating decimal and indicates whether displayed measurement is in micro
Siemens (µS) or milli Siemens (mS) [note: mho = Siemens].

The meter features two front panel controls, one for selecting the Range (A-F) and one for the
“Calibrate” control adjustment. The Model 19101-10 has a function switch on the rear panel for
selecting ATC On or Off, both referenced to 25°C. A self-test mode allows the user to check the
calibration reference point. The Power E
VAC operation. The recorder output is 1 volt per 1000 counts from a 1 K ohm source. A built­in tilt stand / handle and cell holder are included.

BRIEF CIRCUIT DESCRIPTION

A sine wave voltage is applied to the drive plate of the cell. The amplitude and frequency of this
voltage is determined by the range and function selected. Range selects one voltage for the three
micro Siemen ranges and one for the three milli Siemen ranges. Function selects if this voltage
is constant (A.T.C. off) or varying inversely to temperature (A.T.C. on). This voltage forces a
current through the solution to the sense plate of the cell. This current is converted to a voltage
by the input summing amplifier, then rectified by a phase sensitive synchronous rectifier is then
filtered and scaled with the calibrate control to become the output for recording and the input to
the A to D convertor.

ntry Module (PEM) allows for either 115 VAC or 230

OPERATION

The next section in this manual contains operating information and should be read before
installing and using the instrument. If you have questions, please see page 9 for information on
how to contact the Technical Applications Department at Cole Parmer.

PLACEMENT OF INSTRUMENT

Place the instrument on a dry flat surface. Apply correct power to the instrument. See rear panel
of instrument for power requirement and page 7 for more information on the power entry
module. Do not operate instrument in direct sunlight, extreme temperatures, electromagnetic
fields or in explosive or corrosive atmospheres. Do not allow fluids to run into instrument.
SPECIFICATIONS

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RANGE RESOLUTION FREQUENCY ACCURACY( ± 1 Digit)

A (0 - 1.999 µS) .001 35 Hz ±0.3%
B (0 - 19.99 µS) .01 234 Hz ±0.2%
C (0 - 199.9 µS) .1 234 Hz ±0.1%
D (0 - 1.999 mS) .001 1597 Hz ±0.1%
E (0 - 19.99 mS) .01 1597 Hz ±0.2%
F (0 - 199.9 mS) .1 6274 Hz ±0.3%

Temperature Compensation and Slope
TEMPERATURE SLOPE WITH REFERENCE AT 25°°°°C

5°C 1.88%
10°C 1.91%
15°C 1.94%
20°C 1.97%
25°C------------------------------------------------2.00%
30°C 2.03%
35°C 2.06%
40°C 2.09%
45°C 2.12%

ENVIRONMENTAL LIMITS

5 to 45°C (41 to 113°F)
5 to 90% Relative Humidity

LINE POWER

115/230 VAC 50/60 Hz less than 5 watts

International safety recognized power entry module and transformer can be changed for either
115 VAC or 230 VAC. Instrument is shipped from the factory for 115 VAC operation. Includes
a removable U.S. Standard power cord with IEC 320 connector.

DIMENSIONS

Case size: 6 1/8" W x 2 1/2" H x 6 1/4" D (excludes built-in handle & cell holder)
Instrument weight: ~2.5 lbs.
Shipping weight: ~5.0 lbs

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