Hanna Instruments hi 98143-01 사용자 설명서

• Connect pH electrode, EC probe, power supply and

receiving devices to the HI98143 according to previous
instructions.

• Remove the protective cap from the pH electrode and

immerse it into the sample, at least 4 cm.

• When the matching pin is used dip it together

with the pH electrode, if matching pin is not in
use, connect the matching pin terminal to the
reference with a jumper wire.

• Immerse the EC probe in the sample.

• For continuous flow-thru measurements, the probes can

be easily installed in any standard ½” pipe tee. Use

Teflon tape between the probe and the pipe to ensure
a leak free joint. Take care not to overtighten it, as
excessive pressures can cause probe damage.

Note: to prevent damage to the electrode, disconnect the

pH electrode before turning the meter off.

CALIBRATION

For better accuracy, frequent calibration of the instrument is
recommended. The instrument should be recalibrated for
pH:

a) Whenever the electrode is replaced.
b) After testing aggressive chemicals.
c) At least once a month.

pH CALIBRATION

Pour small quantities of pH 7.0 (HI 7007)
and pH 4.0 (HI 7004) solution into two
clean beakers.
Calibration with pH 4.0 (HI 7004) solution is recommended
for measuring acidic samples. Use pH 10.0 (HI 7010)
solution if subsequent samples are alkaline.
• Connect a multimeter to the pH output terminals and

set it to Voltage readings.

Reference

Matching

• Turn the transmitter on.

• Rinse the electrode and immerse it in a pH

7.0 buffer with the grounding probe. Stir
gently and then wait for the reading to
stabilize.

• Adjust the pH Offset Calibration Trimmer with a small

screwdriver until the multimeter displays 500 mV.

• Rinse and immerse the pH electrode and

the grounding probe in pH 4.0 (or pH 10.0)
buffer and stir gently.

• Wait a couple of minutes and then adjust the pH Slope

Trimmer until the multimeter shows the value of the
second buffer expressed in mV (286mV for pH4 and
714mV for pH10 solution).

The pH calibration is now complete.

EC CALIBRATION

• Connect a multimeter to the EC output terminals and set

it to Voltage readings.

• Turn the transmitter on.
• Leave the HI3001 EC probe in air (dry probe).
• Adjust the EC Offset Calibration Trimmer with the cali-

bration screwdriver until the multimeter displays 0 mV.

• Pour a small quantity of 5.00 mS/cm calibration solu-

tion in a beaker.

• Immerse completely the tip of the EC probe into the

beaker with the conductivity solution.

• Tap the probe repeatedly on the bottom of the beaker

and stir it to ensure that no air bubbles are trapped
inside the sleeve. In the case of in-line applications, to

better simulate the installation ambient,
the probe tip should be close to the
beaker bottom edge.

• Allow the reading to stabilize and then

adjust the EC Slope Calibration Trimmer
to read 500 mV on the multimeter LCD.

The EC calibration is now complete.

PH ELECTRODE MAINTENANCE

• Do not be alarmed if white crystals appear around the

electrode protective cap. This is normal with pH elec-
trodes and they dissolve when rinsed with water.

• When not in use, rinse the electrode with tap water to

minimize contamination and store it with a few drops of
storage (

HI 70300) or pH 7 (HI 7007) solution in the

protective cap.
DO NOT USE DISTILLED OR DEIONIZED WATER FOR
STORAGE PURPOSES.

• If the electrode has been left dry, soak the tip in a

storage (

HI 70300) or pH 7 (HI 7007) solution for at

least one hour to reactivate it.

• To minimize clogging and provide longer life for the pH

electrode, it is recommended to clean it monthly. Im-
merse the tip of the electrode in

HI 7061 for one hour

and then rinse it with tap water.

EC PROBE MAINTENANCE

• When calibration can no longer be achieved, remove

conductivity probe from the system for maintenance.
Rinse the probe with tap water. If a more thorough
cleaning is desired, remove the plastic protective sleeve
and clean the platinum sensors with a nonabrasive
cloth or HI 7061 cleaning solution.
Reinsert the sleeve in the same di-
rection as before, paying attention
the sleeve hole touches the threaded
edge.

ACCESSORIES

CE DECLARATION OF CONFORMITY

Recommendations for Users

Before using this product, make sure that it is entirely suitable for the

environment in which it is used. Operation of this instrument in residen-

tial areas could cause unacceptable interferences to radio and TV equip-

ment. The glass bulb at the end of the electrode is sensitive to electro-

static discharges. Avoid touching this glass bulb all the time. The metal

band at the end of the EC electrode is sensitive to electrostatic dis-

charges. Avoid touching this metal band all the time. During operation,

ESD wrist straps should be

worn to avoid possible dam-

age to the electrode by

electrostatic discharges.

Any variation introduced by

the user to the supplied

equipment may degrade the

instrument’s EMC perfor-

mance.

To avoid electrical shock, do

not use this instrument when

voltages at the measurement

surface exceed 24 VAC or 60

VDC. To avoid damages or

burns, do not perform any

measurement in microwave

ovens.

ISTR98143-01R1 02/01

OUTPUT

NOTE: The input is isolated from
output and power supply. The out-
puts aren’t isolated from power supply.

HI 1283

Stainless steel grounding probe with 2 m
(6.6’) cable

HI 1001

“flow-thru” double junction pH electrode with3
m (6.6’) cable and BNC connector

HI 3001

“flow-thru” 4-platinum ring EC probe with 3
m (6.6’) cable and temperature sensor

HI 7004M

pH 4.01 buffer solution, 230 mL bottle

HI 7007M

pH 7.01 buffer solution, 230 mL bottle

HI 7039M

5.00 mS/cm (EC) calibration solution, 230
mL bottle

HI 7061M

Electrode cleaning solution, 230 mL bottle

HI 710005 115 to 12 VDC power adapter

HI 710006 230 to 12 VDC power adapter

HI 77400P pH 4 & 7 solutions, 20 mL sachet (5 each)