Hach-Lange PHC30103 User Manual

User Manual

Refillable pH Probe: Model PHC30101 or PHC30103

Safety information

Precautionary labels

Read all labels and tags attached to the instrument. Personal injury or damage to the
instrument could occur if not observed. A symbol on the instrument is referenced in the
manual with a precautionary statement.

Electrical equipment marked with this symbol may not be disposed of in European public disposal systems after
12 August of 2005. In conformity with European local and national regulations (EU Directive 2002/96/EC), European
electrical equipment users must now return old or end-of-life equipment to the Producer for disposal at no charge to
the user.

Note: For return for recycling, please contact the equipment producer or supplier for instructions on how to return end-of-life
equipment, producer-supplied electrical accessories, and all auxiliary items for proper disposal.

Specifications

Note: Specifications are subject to change without notice.

Specifications Details

DOC022.52

.80032

Probe type Digital combination probe with refillable double junction reference and built-in

temperature sensor

pH range pH 0 to 14

pH resolution User-selectable stabilization time and resolution—Fast: 0.1, Fast: 0.01,

Medium: 0.01, Slow: 0.01 or Slow: 0.001

Sodium (alkalinity) error -0.6 pH at pH 12.6 in 1 M NaOH

Slope -59 mV/pH (90 to 110% at 25 °C per Nernstian theoretical value)

Temperature accuracy ±0.3 °C (±0.54 ° F)

Operating temperature range 0 to 50 °C (32 to 122 °F)

Storage temperature range 5 to 40 °C (41 to 104 °F)

Junction Ceramic

Reference type Ag/AgCl

Minimum sample depth 15 mm (0.59 in.)

Dimensions Diameter: 12 mm (0.47 in.)

Length: 175 mm (6.89 in.)

Cable length: 1 or 3 m (3.28 or 9.84 ft)

Cable connection M12 digital output and connector compatible with HQd meters

Product overview

The PHC301 series probe is a pH refillable combination probe with a built-in temperature
sensor (Figure 1). The PHC30101 or PHC30103 probe is available with a 1 or 3 m
(3.28 or 9.84 ft) cable and is intended for laboratory use. The pH refillable combination
probe measures pH in wastewater, drinking water and general aquous applications. The
probe is not suitable for use with organic solvents. A 28-mL bottle of reference electrolyte
filling solution (3 M KCl solution saturated with AgCl) is included with the probe.

1

Figure 1 Probe overview

1 Probe soaker bottle 4 Protective tape and filling-hole

2 Glass bulb, reference junction and temperature sensor 5 1 or 3 meter (3.28 or 9.84 ft) cable

3 Filling-hole cap 6 Probe soaker bottle holder

Preparation for use

Prepare the probe for use before calibration or sample measurement.

1. Turn the probe soaker bottle cap counter-clockwise to loosen the cap.

2. Remove the soaker bottle from the probe.

3. Rinse the reference junctions

remove the viscous storage/filling solution completely. Blot dry with a lint-free cloth.

4. Remove the protective tape from the filling hole before initial use (refer to Figure 1
on page 2). Dispose of the protective tape.

5. Add filling solution to the probe as necessary (refer to Fill the probe on page 10).
The filling solution must be above the standard solution or sample level during
measurement (Figure 2).

6. Make sure that the filling hole is open during measurement for the proper flow of the
filling solution.

Note: For the best stabilization time, condition the probe for several minutes in the sample
before use.

and glass bulb with deionized water thoroughly to

Figure 2 Measurement method

1 Container 3 Filling solution level

2 Probe body 4 Standard solution or sample level

2

Calibration

Before calibration:

The probe must have the correct service-life time stamp. Set the date and time in the meter before the probe is attached.

It is not necessary to recalibrate when moving a calibrated probe from one HQd meter to another if the additional meter is
configured to use the same calibration options.

To view the current calibration, push , select View Probe Data, then select View Current Calibration.

If any two probes are connected, push the UP or DOWN arrow to change to the single display mode in order to show the
Calibrate option.

Prepare the probe for use (refer to Preparation for use on page 2).

Calibration notes:

•

pH buffers can be used in any order. Use buffers that are two pH units apart.

• Additional standard sets along with the minimum number of calibration points can be
selected in the Calibration Options. For a two point calibration, it is recommended that
two buffers be selected: one with a pH above and one with a pH below the expected
sample pH. For a one point calibration, select the buffer nearest to the expected
sample pH.

• The calibration is recorded in the probe and the data log. The calibration is also sent
to a PC, printer or flash memory stick if connected.

• Air bubbles under the sensor tip when submerged can cause slow response or error
in measurement. If bubbles are present, gently shake the probe until bubbles are
removed.

• If a calibration error occurs, refer to Troubleshooting on page 10.

1. Connect the
probe to the
meter. Make sure
that the cable
locking nut is
securely
connected to the
meter. Turn on the
meter.

Calibration procedure:

2. Push
Calibrate. The

display shows the
buffers that are
necessary for
calibration.

3. Prepare the
fresh buffers in
separate beakers
or appropriate
containers.

4. Rinse the
probe with
deionized water.
Blot dry with a lint­free cloth.

5. Put the probe
in the pH buffer
solution and stir
gently. Make sure
that the reference
junctions are
completely
submerged.
Shake the probe
from side to side
in the standard
solution to refresh
the reference
junction.

3

6. Push Read.

Stir gently. The
display will show
"Stabilizing" and a
progress bar as
the probe
stabilizes in the
standard. The
display shows the
buffer that has just
been read and
shows the
temperature
corrected pH
value when the
reading is stable.

7. Repeat steps 4

- 6 until the
minimum number
of calibration
points specified in
the current
method have been
collected.

8. Push Done to
view the
calibration
summary. The
display will not
show Done until
the minimum
number of
calibration points
have been
collected.

9. Push Store to
accept the
calibration and go
back to
measurement
mode.

Sample measurement

Before measurement:

The probe must have the correct service-life time stamp. Set the date and time in the meter before the probe is attached.

If complete traceability is necessary, enter a sample ID and operator ID before measurement. Refer to the HQd meter
manual for more information.

Regular calibration is required for the best measurement accuracy (refer to Calibration on page 3).

Prepare the probe for use (refer to Preparation for use on page 2).

Measurement notes:

•

Data is automatically stored in the data log when Press to Read or Interval is
selected in the Measurement Mode. When Continuous is selected, data will only be
stored when Store is selected.

• Air bubbles under the sensor tip when submerged can cause slow response or error
in measurement. If bubbles are present, gently shake the probe until bubbles are
removed.

• If a measurement error occurs, refer to Troubleshooting on page 10.

Measurement procedure:

4

1. Connect the

probe to the
meter. Make sure
that the cable
locking nut is
securely
connected to the
meter. Turn the
meter on.

2. For the best
stabilization time,
condition the
probe in the
sample for at least
10 minutes before
the initial sample
measurement.

3. Rinse the
probe with
deionized water
and then with the
sample. Blot dry
with a lint-free
cloth.

4. Put the probe
in the sample and
stir gently. Make
sure that the
reference
junctions are
completely
submerged. Do
not put the probe
on the bottom or
sides of the
container. Shake
the probe from
side to side in the
sample to refresh
the reference
junction.

5. Push Read.
The display will
show "Stabilizing"
and a progress
bar as the probe
stabilizes in the
sample. The
display will show
the lock icon when
the reading
stabilizes.

6. Repeat steps
2-4 for additional
measurements.

7. When
measurements
are done, store
the probe (refer to

Storage

on page

10).

Run a check standard

The run check standard feature validates instrument performance between sample
measurements. Use the run check standard feature for periodic or user-defined interval
measurements of a traceable standard solution. Set the criteria for check standards from
the PHC301

Note: Access control must be off or a valid password must be entered before any of the check
standard method options can be changed.

1. Push

2. Select Run Check Standard.

Note: Select the correct probe if two probes are connected to the meter.

3. Get the standard solution shown on the display.

4. Rinse the probe with deionized water. Blot dry with a lint-free cloth.

5. Put the probe in the standard solution until the temperature sensor is completely

submerged. Move the probe up or down or gently tap on the beaker to remove air
bubbles from the probe.

6. Push Read. The display will show "Stabilizing" and a progress bar as the reading
stabilizes. The display shows the value of the check standard and either Check
Standard Passed or Check Standard Failed.

Settings menu.

. The Full Access Options menu is shown.

5