Barnant Company 559-3800 User manual

OPERATING MANUAL
BARNANT 20
Digital
pH/mV/ORP Meter
Model No. 559 3800
Barnant Company
28W092 Commercial Avenue
Barrington, Illinois U.S.A. 60010-2392
[phone]
[phone] (Fax)
800-637-3739
www.barnant.com
e-mail: [e-mail]
A-1299-0477
Edition 03
WARRANTY
The Manufacturer warrants this product to be free from significant devia-
tions from published specifications. If repair or adjustment is necessary
within the warranty period, the problem will be corrected at no charge if it
is not due to misuse or abuse on your part as determined by the
Manufacturer. Repair costs outside the warranty period, or those resulting
from product misuse or abuse, may be invoiced to you.
The warranty period for this product is noted on the Warranty Card.
PRODUCT RETURN
To limit charges and delays, contact the seller or Manufacturer for autho-
rization and shipping instructions before returning the product, either with-
in or outside of the warranty period. When returning the product, please
state the reason for the return. For your protection, pack the product care-
fully and insure it against possible damage or loss. Any damages resulting
from improper packaging are your responsibility.
TECHNICAL ASSISTANCE
If you have any questions about the use of this product, contact the
Manufacturer or authorized seller.
Printed in U.S.A.
030297
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SPECIFICATIONS
Ranges:
pH: 0.00 to 14.00
mV: -1999 to +1999
Resolution:
pH: 0.01
mV: 1. mV
Accuracy:
pH: ±0.01 pH
mV: ±1 mV
Temp Compensation: Manual, from 0° to 100° C
Battery: 9 volt (included) battery life: 2000 hrs.
Display: 4 digit LCD, 1/2 in high
Input Impedance: Greater than 1012 ohms
Dimensions: 6 5/8 in L x 3 in W x 29/32 in D

TABLE OF CONTENTS
Title Page
GENERAL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
OPERATING TIPS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Front Panel Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
pH Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Temperature Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
Battery Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Cleaning the Probe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
PRODUCT RETURN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
TECHNICAL ASSISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
Trademarks bearing the ® symbol in this publication
are registered in the U.S. and in other countries.
4
Battery Replacement
The pH meter uses a 9 volt battery with a life of 2000 hours. If the low bat-
tery indicator is on, stop operation and replace the internal battery with a
new 9 volt battery.
Cleaning the Probe
The glass bulb is the sensitive part of the probe; it should always be kept
clean. Rinse the probe with distilled water after use. Before storage, rinse
the probe with tap or distilled water, shake dry and place the probe in the
protective cap which should be filled with KCL solution or equivalent probe
storage solution.
If KCL or equivalent storage solution is not available, use a 4.00 pH buffer,
7.00 pH buffer or tap water.
CAUTION: Do not use distilled or deionized water for storing, under any
circumstance.
TROUBLESHOOTING GUIDE
Symptoms Problem Possible Solution
Meter will not Defective pH probe, 1.Change buffer
calibrate or gives bad buffer, or 2.Check chemical
erroneous readings incompatible sample compatibility
3.Replace pH probe
Unit gives slow Dry electrode or 1.Clean the probe
response or erron- clogged reference 2.Replace pH probe
eous readings junction in pH probe
Meter will not Defective pH probe 1.Change buffers
accept second or bad buffer 2.Clean probe
buffer 3.Replace probe
Reading drift Bad pH probe or 1.Clean probe
on display incompatible sample 2.Check chemical
being measured compatibility of
sample with probe
3.Replace probe
Lo Bat indicator is lit Low battery Replace battery

pH Calibration
Calibration with manual temperature compensation.
1. Press ON/OFF key to turn meter on.
2. Connect the pH probe to the meter.
3. Immerse the probe in buffer 7.00.
4. Press the pH/mV key to select pH.
5. Adjust temp °C control to the temperature of buffer 7.00.
NOTE: A separate thermometer is needed to measure the temperature of
the buffers. Both buffers should be at the same temperature.
6. Adjust the standardize control to read 7.00 pH on the display.
7. Rinse the probe with distilled water and blot dry.
8. Immerse the probe in the second buffer (4.00 or 10.00).
9. Adjust the temp °C control to the temperature of the second buffer.
10. Allow the reading to stabilize, then adjust the SLOPE control to
the value of the second buffer.
11. Rinse the probe with distilled water.
Calibration is now complete.
OPERATION
1. Push the ON/OFF key to turn the meter on.
2. Push the pH/mV key until the annunciators indicate the desired mode.
For pH measurement: Rinse the probes with distilled water, then immerse
the probe in the solution to be measured. The pH value will stabilize after
a few seconds. Do not rub the bulb as this will cause static build-up on the
bulb resulting in faulty readings.
Temperature Compensation
Temperature compensation can be set manually by the temperature °C
adjustment over a range of 0° to 100° C.
For millivolt or ORP measurement: Press the pH/mV key until the display
shows millivolts.Verify the probe connection, then rinse the probe with dis-
tilled water and blot dry. Immerse the probe in the sample to be measured.
Allow the displayed reading to stabilize, then take the reading.
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GENERAL DESCRIPTION
This portable, Digital pH Meter is designed with solid state electronics pro-
viding highly reliable operation.The LCD display enables you to read even
under bright ambient conditions.It is designed for pH (manual), millivolt and
ORP determination.
OPERATING TIPS
For fast response, the glass bulb of the probe should always be kept moist.
A rubber cap is supplied with the probe to store a small amount of solution
and to cover the glass bulb.
Before use, remove the cap. If the cap has been left off and the tip of the
probe is dry, dip the probe in KCL solution for 30 minutes or soak in tap
water for 2 hours.
When the electrode is not in use, replace the cap which should be filled
with KCL or equivalent probe storage solution. If a solution is not available,
use tap water.
CAUTION: Do not use distilled or deionized water for storing, under any
circumstance.
Front Panel Controls
The features on the front panel are:
1. ON/OFF key
2. (pH/mV) key
3. SLOPE adjustment
4. Manual temperature adjustment
5. Standardize control
6. pH probe input
7. LCD display
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