Hanna Instruments | HI2550-01 | Owner Manual | Hanna Instruments HI2550-01 Owner Manual

Hanna Instruments HI2550-01 Owner Manual
Instruction Manual
HI2550
Multiparameter
pH/ORP/°C
EC/TDS/NaCl
Bench Meter
www.hannainst.com
1
Dear Customer,
Thank you for choosing a Hanna Instruments product.
Please read this instruction manual carefully before using this instrument.
This manual will provide you with the necessary information for correct
use of this instrument, as well as a precise idea of its versatility.
If you need additional technical information, do not hesitate to e‑mail
us at tech@hannainst.com or view our worldwide contact list at
www.hannainst.com.
All rights are reserved. Reproduction in whole or in part is prohibited
without the written consent of the copyright owner.
2
TABLE OF CONTENTS
PRELIMINARY EXAMINATION...........................................................4
GENERAL DESCRIPTION...................................................................4
FUNCTIONAL DESCRIPTION..............................................................5
SPECIFICATIONS.............................................................................6
OPERATIONAL GUIDE......................................................................8
AUTO-RANGING............................................................................12
pH CALIBRATION..........................................................................13
pH BUFFER TEMPERATURE DEPENDENCE.......................................18
RELATIVE mV CALIBRATION...........................................................19
EC/TDS CALIBRATION....................................................................19
CONDUCTIVITY VERSUS TEMPERATURE CHART................................21
NaCl CALIBRATION........................................................................22
GOOD LABORATORY PRACTICE (GLP)...............................................23
LOGGING FUNCTION......................................................................28
SETUP.........................................................................................35
TEMPERATURE CALIBRATION (FOR TECHNICAL PERSONNEL ONLY)42
mV CALIBRATION (FOR TECHNICAL PERSONNEL ONLY)....................44
PC INTERFACE..............................................................................45
ELECTRODE CONDITIONING AND MAINTENANCE..............................51
TROUBLESHOOTING GUIDE...........................................................54
TEMPERATURE CORRELATION FOR pH SENSITIVE GLASS..................55
ACCESSORIES...............................................................................56
3
PRELIMINARY EXAMINATION
Remove the instrument from the packing material and examine it carefully
to make sure that no damage has occurred during shipping. If there is any
damage, please contact your local Hanna Instruments Office.
Each instrument is supplied with:
• HI1131B Glass-body Combination pH Electrode with 1 m (3.3’)
Cable
• HI76310 Conductivity / TDS probe
• HI7662 Temperature Probe
• HI76404N Electrode Holder
• pH4.01 & 7.01 Buffer Solutions (20 mL each)
• HI7082 Electrolyte Solution
• 12VDC Power Adapter
• Instruction Manual
• Quick Reference Guide
• Quality Certificate
Note: Save all packing material until you are sure that the instrument
functions correctly. All defective items must be returned in the
original packing with the supplied accessories.
GENERAL DESCRIPTION
The HI2550 is a microprocessor based pH, ORP, Conductivity (EC), TDS,
NaCl, and Temperature Bench Meter. Relative mV feature is also provided.
pH measurements are compensated for temperature effect manually or
automatically with the HI7662 temperature probe.
Up to a five-point pH calibration can be performed using seven standard
buffers and two custom buffers.
A calibration due alarm can be set to alert the user that too much time
has elapsed since the last pH calibration.
Conductivity and TDS features auto-ranging, which automatically selects
the scale with the highest resolution. Conductivity measurements are
compensated for temperature manually or automatically with a tem‑
perature sensor located inside the probe. The temperature coefficient is
user selectable. Temperature compensation can be disabled to measure
actual conductivity.
The GLP feature provides data consistency.
Data can be stored in the meters memory for later retrieval. The meters
memory can hold 200 manually logged points and 500 lot logging points.
An USB connection ensures communication with a PC.
4
FUNCTIONAL DESCRIPTION
Front Panel
Rear Panel
1) Liquid Crystal Display (LCD).
2) CAL key, to enter and exit calibration mode.
RCL key (alternate function), to enter and exit memory recall.
3) CFM/GLP key, to confirm calibration selection, different setup values or to
display Good Laboratory Practice information.
4) ºC key, to manually increase temperature value or other parameters.
TC key (alternate function), to view temperature coefficient value.
5) ºC key, to manually decrease temperature value or other parameters.
ATC key (alternate function), to select EC temperature compensation mode.
6) SETUP key, to enter/exit SETUP mode.
LOCK key (alternate function), to freeze current EC range on the LCD.
7) RANGE key, to select measurement range (pH, mV, EC), switch to focused
data in SETUP or toggle between buffer value and temperature during
calibration.
MODE key (alternate function) to select mV or Rel mV on mV range or EC,
TDS, NaCl on EC range.
8) LOG/CLR key, to store a value into memory, to clear pH calibration, or to
select to delete log records or lots.
9) ALT key, to select alternate function.
10) ON/OFF switch.
11) Power supply socket.
12) USB connector.
13) EC electrode connector.
14) BNC electrode connector.
15) Temperature probe socket.
16) Electrode reference socket.
5
SPECIFICATIONS
RANGE
RESOLUTION
–2.0 to 16.0 pH
–2.00 to 16.00 pH
–2.000 to 16.000 pH
±999.9 mV (ISE & ORP)
±2000 mV (ISE & ORP)
0.00 to 29.99 µS/cm
30.0 to 299.9 µS/cm
300 to 2999 µS/cm
3.00 to 29.99 mS/cm
30.0 to 200.0 mS/cm
up to 500.0 mS/cm uncompensated(*) conductivity
0.00 to 14.99 ppm
15.0 to 149.9 ppm
150 to 1499 ppm
1.50 to 14.99 g/l
15.0 to 100.0 g/l
up to 400.0 g/l uncompensated(*) TDS
(with 0.80 factor)
0.0 to 400.0% NaCl
–20.0 to 120.0 ºC (pH, EC range)
0.1 pH
0.01 pH
0.001 pH
0.1 mV (±1000 mV)
1 mV (±2000 mV)
0.01 µS/cm
0.1 µS/cm
1 µS/cm
0.01 mS/cm
0.1 mS/cm
0.01 ppm
0.1 ppm
1 ppm
0.01 g/l
0.1 g/l
0.1% NaCl
0.1 ºC
( )
* Uncompensated conductivity (or TDS) is the conductivity (or TDS) value without
temperature compensation.
6
ACCURACY
@ 20 °C / 68 °F
Rel mV offset range
pH Calibration
EC Calibration
NaCl Calibration
Temperature
compensation
±0.01 pH
±0.002 pH
±0.2 mV (±999.9 mV)
±1 mV (±2000 mV)
±1 % reading (±0.05 µS/cm or 1 digit,
whichever is greater)
±1 % of reading (±0.03 ppm or 1 digit,
whichever is greater)
±1% of reading
±0.4 ºC (excluding probe error)
±2000 mV
1, 2, 3, 4 or 5 point calibration,
7 standard buffers available
1 point slope calibration;
6 buffers available:
84.0, 1413 µS/cm
5.00, 12.88, 80.0, 111.8 mS/cm
1 point offset: 0.00 µS/cm
1 point with HI7037L buffer (optional)
Manual or Automatic from:
–20.0 to 120.0 ºC (pH RANGE)
–20.0 to 120.0 ºC (EC RANGE)
(can be disabled on conductivity range to measure
actual conductivity
0.00 to 6.00 %/ºC
(for EC and TDS only)
default value is 1.90 %/ºC
0.40 to 0.80 (default value is 0.50)
HI1131B
HI76310
HI7662
Conductivity
temperature
coefficient
TDS factor
pH Electrode
EC Probe
Temperature probe
Input impedance
1012 ohms
(BNC input)
Log on demand feature 200 records
500 records Stability logging (”StAb”),
Log Interval feature 5, 10, 30 sec
1, 2, 5, 10, 15, 30, 60, 120, 180 min
PC communication
Optoisolated USB
Power supply
12 VDC adapter
Dimensions
235 x 222 x 109 mm (9.2 x 8.7 x 4.3”)
Weight
1.3 Kg (2.9 lb); kit with holder 2.1 Kg (4.6 lb)
0 – 50 ºC (32 – 122 ºF)
Environment
max. 95% RH non-condensing
Warranty
2 years
7
OPERATIONAL GUIDE
POWER CONNECTION
Plug the 12 VDC adapter into the power supply socket.
Notes: This instrument uses non volatile memory to retain the
calibration parameters and all other settings, even when unplugged.
Make sure a fuse protects the main line.
ELECTRODE AND PROBE CONNECTIONS
For pH or ORP measurements connect an electrode with internal reference
to the BNC connector on the back of the instrument.
For electrodes with a separate reference connect the electrode’s BNC to the
BNC connector and the reference electrode plug to the reference socket.
For temperature measurements and automatic temperature compensation
connect the temperature probe to the appropriate socket.
For EC/TDS measurements connect the probe to the 7-pin connector.
Make sure the probe sleeve is properly inserted.
INSTRUMENT START-UP
• Turn the instrument on by pressing the ON/OFF switch located on
the rear panel.
• All LCD tags are displayed and a beep is sounded while the instruments
perform a self test.
• The instrument will display “LoAd” message and “ ” blinking until
initialization is complete.
Notes: The instrument starts in the same range and mode as it
was at power off.
The ALT&MODE keys change the measuring modes:
- mV or Rel mV
- EC or TDS or NaCl
The RANGE key toggles between measurement ranges:
- pH, mV or Rel mV, EC or TDS or NaCl.
pH MEASUREMENTS
Make sure the instrument has been calibrated before
taking pH measurements.
• Submerse the electrode tip and the temperature
probe approximately 3 cm (1¼”) into the
sample to be tested and stir gently. Allow time
for the electrode to stabilize.
8
• The pH is displayed on the primary LCD and the temperature on the
secondary LCD.
• If the reading is out of range, the closest full-scale value will be
displayed blinking on the primary LCD.
If measurements are taken successively in different samples, it is
recommended to rinse the electrode thoroughly with deionized water
or tap water and then with some of the next sample to prevent
cross-contamination.
The pH reading is affected by temperature. In order to measure the pH
accurately, the temperature effect must be compensated for. To use the
Automatic Temperature Compensation feature, connect and submerse
the HI7662 temperature probe into the sample as close as possible to
the electrode and wait for a few seconds.
If the temperature of the sample is known, manual temperature compen‑
sation can be used by disconnecting the temperature probe.
The display will show the last temperature reading the
“MTC” tag and the “ºC” tag blinking.
The temperature can now be adjusted with the ARROW
keys (from –20.0 ºC to 120.0 ºC).
mV/ORP MEASUREMENTS
An optional ORP electrode must be used to perform ORP measurements
(see Accessories).
Oxidation-Reduction Potential (REDOX) measurements provide the
quantification of the oxidizing or reducing power of the tested sample.
The surface of the ORP electrode must be clean and smooth in order to
obtain an accurate measurement.
• Press RANGE to enter mV range.
• Submerse the tip of the ORP electrode 3 cm (1¼”)
into the sample to be tested and allow a few
seconds for the reading to stabilize.
• The instrument displays the mV reading on the
primary LCD and the temperature on the secondary
LCD line.
9
• If the reading is out of range, the closest full-scale value will be
displayed blinking on the primary LCD.
RELATIVE mV MEASUREMENTS
• Press the ALT&MODE keys simultaneously while in mV range. The
“mV” and “Rel” tags are displayed.
The reading displayed by the instrument is equal to the difference between
the current mV input value and the relative mV offset established in the
relative mV calibration.
CONDUCTIVITY MEASUREMENTS
Connect the conductivity probe to the instrument.
• Press the RANGE key to enter conductivity measurement range (EC).
• Submerse the probe into the solution to be tested. The
sleeve holes must be completely submersed. Tap the
probe repeatedly to remove any air bubbles that may
be trapped inside the sleeve.
• The conductivity value will be displayed on the primary LCD and the
temperature on the secondary LCD.
• If the reading is out of range, the full-scale value (200.0 for MTC/ATC
mode or 500.0 for actual conductivity) will be displayed blinking.
• If LOCK key was pressed and the reading goes out of range, the
full-scale value of the frozen range will be displayed blinking.
The conductivity reading is affected by temperature.
Three options for temperature compensation are available in conductivity
measurement mode.
10
Automatic (ATC): The conductivity probe has a built-in temperature
sensor; the temperature value is used to automatically compensate the
EC/TDS reading. The “ATC” tag is displayed when this option is active.
Manual (MTC): The temperature value, shown on the secondary LCD,
can be manually set with the ARROW keys. The “ºC” tag blinks and
the “MTC” tag is displayed when this option is active. This value will be
used to compensate the EC/TDS reading.
No Compensation (notc): The temperature value is displayed, but not
taken into account. When this option is selected the “ºC” tag will blink
with slower frequency and the “NO TC” tag is displayed. The reading
displayed on the primary LCD is the uncompen‑
sated EC or TDS value.
To select the desired option, press the ALT&ATC
keys until the option is displayed on the LCD.
Note: The default compensation mode is ATC. If no temperature
probe is detected, ATC mode can not be selected and the instrument
displays “----” on the secondary LCD.
If temperature compensation is selected, measurements are compensated
using the temperature coefficient (default value 1.90 %/ºC). To change
the temperature coefficient, enter the setup mode and select “tc” (see
SETUP for details, page 36). The current temperature coefficient can
be quickly viewed by pressing the ALT&TC keys. The value is briefly
displayed on the LCD.
• If the temperature reading exceeds the limits of the meter (–20.0 ºC
to 120.0 ºC), the “ºC” tag will blink and the closest full scale value
will be displayed.
TDS MEASUREMENTS
Press the ALT&MODE keys while in EC range. The instrument will switch
to TDS measuring range. The TDS reading will be displayed on the primary
LCD and the temperature reading on the secondary LCD.
• If the reading is out of range, the full-scale value (100.0 g/L for MTC/
ATC mode or 400.0 g/L for uncompensated TDS) will be displayed
blinking.
• If LOCK was pressed and the reading goes out of range, the full-scale
value of the frozen range will be displayed blinking.
11
NaCl MEASUREMENTS
Press the ALT&MODE keys while in EC range until NaCl is displayed on
the LCD. The instrument will display the NaCl reading on the primary LCD
and the temperature reading on the secondary LCD line.
• If the reading is out of range, the full-scale value (400.0%) will be
displayed blinking.
TEMPERATURE MEASUREMENTS
In pH and ORP mode, connect the HI7662 temperature probe to the
appropriate socket.
Submerse the temperature probe into the sample and allow the reading
on the secondary LCD to stabilize.
In EC/TDS/NaCl range, the HI76310 probe has a built-in temperature
sensor.
AUTO-RANGING
The EC and TDS scales are auto-ranging. The meter automatically sets
the scale with the highest possible resolution.
By pressing ALT&LOCK, the auto-ranging feature is disabled and the
current range is frozen on the LCD. The “LOCK“ tag will be displayed
on the LCD.
Note: Auto-ranging is automatically restored if the range is changed,
if the setup or calibration modes are entered and if the meter is
turned off and back on again.
When auto-ranging is disabled and the reading goes out of range, the
full-scale value of the frozen range will be displayed blinking.
12
pH CALIBRATION
Calibrate the instrument frequently, especially if high accuracy is required.
The instrument should be recalibrated:
• Whenever the pH electrode is replaced.
• At least once a day.
• After testing aggressive chemicals.
• If “CAL” “Intv.” tags are blinking during measurement.
Every time you calibrate the instrument use fresh buffers and perform an
electrode Cleaning Procedure (see page 53).
PREPARATION
Pour small quantities of the buffer solutions into clean beakers. If possible,
use plastic or glass beakers to minimize any EMC interferences.
For accurate calibration and to minimize cross-contamination, use two
beakers for each buffer solution. One for rinsing the electrode and one
for calibration.
If you are measuring in the acidic range, use pH7.01 or 6.86 as first buffer
and pH4.01 as second buffer. If you are measuring in the alkaline range,
use pH7.01 or 6.86 as first buffer and pH10.01 or 9.18 as second buffer.
PROCEDURE
Calibration can be performed at up to five-points.
For accurate measurements, a three-point calibration is recommended.
The calibration buffer can be selected from the calibration buffer list
that includes the custom buffers and the memorized standard buffers:
• pH1.68, 4.01, 6.86, 7.01, 9.18, 10.01 and 12.45
The custom buffers allow the user to calibrate in a buffer solution different
from a standard one. Up to two custom buffers can be set in SETUP menu
(see page 36). Each custom buffer value can be changed in a ±1.0 pH
window around the set value, during calibration, when it is selected; the
“Cust.” tag will be displayed.
The instruments will automatically skip the buffer used during calibration
and the buffers which are in a ±0.2 pH window, around one of the
calibrated buffers.
All new calibrations will override existing stored calibration data in
a ±0.2 pH window. The slopes adjacent to the new points will be
reevaluated.
13
FIVE-POINT CALIBRATION
• Submerse the pH electrode and the temperature
probe approximately 3 cm (1¼”) into a buffer
solution and stir gently. The temperature probe
should be close to the pH electrode.
• Press CAL. The “CAL” and “ ” tags will appear
and the “7.01” buffer will be displayed on the
secondary LCD. The temperature compensation
mode tag is displayed also.
• If necessary, press the ARROW keys to select a different buffer value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected
buffer, the “CFM” tag will blink.
• Press CFM to confirm calibration.
• The calibrated value is then displayed on the primary
LCD and the second expected buffer value on the
secondary LCD.
• After the first calibration point is confirmed, submerse the pH electrode
and the temperature probe approximately 3 cm (1¼”) into the second
buffer solution and stir gently. The temperature probe should be close
to the pH electrode.
• If necessary, press the ARROW keys to select a different buffer value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected
buffer, the “CFM” tag will blink.
• Press CFM to confirm calibration.
• The calibrated value is then displayed on the
primary LCD and the third expected buffer value on
the secondary LCD.
• After the second calibration point is confirmed, submerse the pH
electrode and the temperature probe approximately 3 cm (1¼”)
into the third buffer solution and stir gently. The temperature probe
should be close to the pH electrode.
14
• If necessary, press the ARROW keys to select a different buffer value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected
buffer, the “CFM” tag will blink.
• Press CFM to confirm calibration.
• The calibrated value is then displayed on the primary
LCD and the fourth expected buffer value on the
secondary LCD.
• After the third calibration point is confirmed, submerse the pH
electrode and the temperature probe approximately 3 cm (1¼”)
into the fourth buffer solution and stir gently. The temperature probe
should be close to the pH electrode.
• If necessary, press the ARROW keys to select a different buffer value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected
buffer, the “CFM” tag will blink.
• Press CFM to confirm calibration.
• The calibrated value is then displayed on the primary
LCD and the fifth expected buffer value on the second‑
ary LCD.
• After the fourth calibration point is confirmed, submerse the pH
electrode and the temperature probe approximately 3 cm (1¼”)
into the fifth buffer solution and stir gently. The temperature probe
should be close to the pH electrode.
• If necessary, press the ARROW keys to select a different buffer value.
• The “ ” tag will blink on the LCD until the reading is stable.
• When the reading is stable and close to the selected
buffer, the “CFM” tag will blink.
• Press CFM to confirm the fifth calibration point.
• The instrument stores the calibration value and returns
to normal measurement mode.
FOUR, THREE OR TWO-POINT CALIBRATION
• Proceed as described in “FIVE-POINT CALIBRATION” section.
• Press CAL after the fourth, third or second calibration point was
confirmed. The instruments will memorize the calibration data and
return to measurement mode.
15
ONE-POINT CALIBRATION
Two SETUP selectable options are available: “Pnt” and “OFFS”.
If the “Pnt” option is selected, the new calibration point overrides an
existing one. The adjacent slopes will be reevaluated.
If the “OFFS” option is selected, an electrode offset correction is
performed.
The adjacent slopes will remain unchanged.
• Proceed as described in “FOUR, THREE or TWO-POINT CALIBRATION”
section.
• Press CAL after the first calibration point was confirmed. The instru‑
ments will memorize the one-point calibration data and return to
measurement mode.
Notes: • If the value measured by the instrument is not close to
the selected buffer, “WRONG” “ ” and “WRONG” “ ” tags will
blink alternately. Check if the correct buffer has been used, or clean
the electrode by following the Cleaning Procedure (see page 53). If
necessary, change the buffer or the electrode.
• When a custom buffer is displayed, the “Cust.” tag is
displayed. To change the custom buffer value in accordance with the
buffer temperature proceed as described in “WORKING WITH CUSTOM
BUFFERS” (see page 17).
• If the buffer temperature or the manual temperature
exceeds the temperature limits of the buffer, “WRONG” tag and
temperature reading will blink.
• If “WRONG”, “Buff.” tags and “OLd” message are
displayed blinking on the secondary LCD line, an inconsistency be‑
tween new and previous (old) calibration is detected. Clear calibration
parameters and proceed with calibration from the current calibration
point. The instrument will keep all confirmed values during current
calibration.
• To clear calibration parameters for all uncalibrated buffers
starting with current buffer, press CLR. The calibration will continue
from the current point. If this procedure is performed while calibrating
in the first calibration point, the instrument returns to measurement
mode.
• Press RANGE to toggle between pH
buffer, calibration buffer number and temperature
reading.
16
• Each time a buffer is confirmed, the new calibration data replaces the
old calibration data for the corresponding buffer. If current buffer has
no previous data stored and the calibration is not full (five buffers),
the current buffer is added to the existing calibration. If the existing
calibration is full, the instrument asks which buffer to replace.
Press the ARROW keys to select another buffer to be replaced.
Press CFM to confirm the buffer that will be replaced.
Press CAL to leave calibration without replacing.
Note: If the replaced buffer is outside the ±0.2 pH window, around
each of the calibrated buffers, it is possible to select this buffer for
next calibration during current calibration.
WORKING WITH CUSTOM BUFFERS
If a custom buffer was set in SETUP menu, it can be selected during cali‑
bration by pressing the ARROW keys. The “Cust.” tag will be displayed.
Press SETUP if you want to adjust the buffer value. The buffer value
will start blinking.
Use the ARROW keys to change the buffer value.
After 5 seconds, the buffer value is updated. Press SETUP if you want
to change it again.
Note: Custom buffer value can be adjusted in a ±1.00 pH window,
around the set value.
17
pH BUFFER TEMPERATURE
DEPENDENCE
The temperature has an effect on pH. The calibration buffer solutions are
affected by temperature changes to a lesser degree than normal solutions.
During calibration the instrument will automatically calibrate to the pH
value corresponding to the measured or set temperature.
TEMP
°C °F
0 32
5 41
10 50
15 59
20 68
25 77
30 86
35 95
40 104
45 113
50 122
55 131
60 140
65 149
70 158
75 167
80 176
85 185
90 194
95 203
1.68
1.67
1.67
1.67
1.67
1.68
1.68
1.68
1.69
1.69
1.70
1.71
1.72
1.72
1.73
1.74
1.76
1.77
1.78
1.79
1.81
4.01
4.01
4.00
4.00
4.00
4.00
4.01
4.02
4.03
4.04
4.05
4.06
4.08
4.09
4.11
4.12
4.14
4.16
4.17
4.19
4.20
pH BUFFERS
6.86 7.01 9.18
6.98 7.13 9.46
6.95 7.10 9.39
6.92 7.07 9.33
6.90 7.05 9.27
6.88 7.03 9.22
6.86 7.01 9.18
6.85 7.00 9.14
6.84 6.99 9.11
6.84 6.98 9.07
6.83 6.98 9.04
6.83 6.98 9.01
6.84 6.98 8.99
6.84 6.98 8.97
6.84 6.99 8.95
6.85 6.99 8.93
6.86 7.00 8.91
6.87 7.01 8.89
6.87 7.02 8.87
6.88 7.03 8.85
6.89 7.04 8.83
10.01
10.32
10.24
10.18
10.12
10.06
10.01
9.96
9.92
9.88
9.85
9.82
9.79
9.77
9.76
9.75
9.74
9.74
9.74
9.75
9.76
12.45
13.38
13.18
12.99
12.80
12.62
12.45
12.29
12.13
11.98
11.83
11.70
11.57
11.44
11.32
11.21
11.10
11.00
10.91
10.82
10.73
During calibration the instrument will display the pH buffer value at 25 ºC.
18
RELATIVE mV CALIBRATION
• Press CAL when the instrument is in RELATIVE mV measurement
mode. The “mV Rel” and “ ” tags will be displayed. Absolute mV
is displayed on the primary LCD and “AbS” message is displayed
on the secondary LCD.
• When the absolute reading is stable and in measurement range, the
instrument asks for confirmation.
• If the reading is out of range, “WRONG” tag will be displayed.
• Press CFM to confirm the absolute value. The instrument will display
0.0 mV on the primary LCD and “rEL” message on the secondary
LCD. In this moment the relative mV offset is equal to absolute mV
reading.
• Use the ARROW keys if you want to change the displayed relative
mV value.
• Press CFM to confirm the relative mV value. The instrument returns
to measurement mode.
Note: The relative mV value can be changed only inside the relative
mV offset window (± 2000 mV).
EC/TDS CALIBRATION
Selectable calibration points for conductivity are 0.00 µS for offset and
84.0 µS, 1413 µS, 5.00 mS, 12.88 mS, 80.0 mS, 111.8 mS for slope.
Rinse the probe with calibration solution or deionized
water. Submerse the probe into the solution. The sleeve
holes must be completely submersed. Tap the probe
repeatedly to remove any air bubbles that may be trapped
inside the sleeve.
To enter EC calibration, select the EC range and press CAL.
The “BUF” and “CAL” tags are displayed. The primary
LCD will display the EC reading. The secondary LCD will
display the value of the standard. The temperature
compensation mode tag is also displayed. The “ ” and
“~” tags will blink.
Note: The TDS reading is automatically derived from the EC reading
and no specific calibration for TDS is needed. Pressing CAL when
TDS range is selected has no effect.
For zero calibration, just leave the dry probe in the air. This calibration
is performed in order to correct the reading at 0.00 µS. The slope is
evaluated when the calibration is performed at any other point.
19
Select the desired value with the ARROW keys, if necessary.
When the reading is stable, “CFM” tag starts blinking on the LCD, asking
for confirmation.
Press CFM to confirm calibration.
The instrument stores the calibration value and returns
to measurement mode.
Notes: • If the reading is too far from the expected value, the
“WRONG” and “ ” tags will blink. Calibration can not be confirmed.
In this case check if the calibration solution has been used or clean
the probe by following the Cleaning Procedure (see page 53).
• If the meter is in ATC or MTC mode and the buffer
temperature is out of the 0.0 °C to 60.0 ºC interval, “WRONG”
“ºC” tags and the temperature will blink.
• For best results choose an EC buffer value close to the
sample to be measured.
• In order to minimize any EMC interference, use plastic or
glass beakers.
• It is possible to set the cell constant value directly, without
following the calibration procedure. To set the cell constant, enter
SETUP mode and select “CELL” (see SETUP for details, page 36).
20
CONDUCTIVITY VERSUS
TEMPERATURE CHART
The conductivity of an aqueous solution is a measure of its ability to carry
an electrical current by means of ionic motion.
The conductivity invariably increases with increasing temperature.
It is affected by the type and number of ions in the solutions and by
the viscosity of the solution itself. Both parameters are temperature
dependent. The dependency of conductivity on temperature is expressed
as a relative change per Celsius degrees at a particular temperature, com‑
monly as %/ ºC. The following table lists the temperature dependence of
Hanna Instruments EC calibration buffers.
ºC
ºF
0
5
10
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
41
50
59
60.8
62.6
64.4
66.2
68
69.8
71.6
73.4
75.2
77
78.8
80.6
82.4
84.2
86
87.8
HI7030 HI7031 HI7033 HI7034 HI7035 HI7039
HI8030 HI8031 HI8033 HI8034 HI8035 HI8039
(mS/cm) (mS/cm) (mS/cm) (mS/cm) (mS/cm) (mS/cm)
7150
776
64
48300 65400
2760
8220
896
65
53500 74100
3180
9330
1020
67
59600 83200
3615
10480
1147
68
65400 92500
4063
10720
1173
70
67200 94400
4155
10950
1199
71
68500 96300
4245
11190
1225
73
69800 98200
4337
11430
1251
74
71300 100200 4429
11670
1278
76
72400 102100 4523
11910
1305
78
74000 104000 4617
12150
1332
79
75200 105900 4711
12390
1359
81
76500 107900 4805
12640
1386
82
78300 109800 4902
12880
1413
84
80000 111800 5000
13130
1440
86
81300 113800 5096
13370
1467
87
83000 115700 5190
13620
1494
89
84900 117700 5286
13870
1521
90
86300 119700 5383
14120
1548
92
88200 121800 5479
14370
1575
94
90000 123900 5575
21
NaCl CALIBRATION
NaCl calibration is a one-point calibration at 100.0% NaCl. Use the
HI7037L calibration solution (sea water solution) as a 100% NaCl
calibration solution.
Rinse the probe with some of the calibration solution
or deionized water. Submerse the probe into HI7037L
solution. The sleeve holes must be completely submersed.
Tap the probe repeatedly to remove any air bubbles that
may be trapped inside the sleeve.
To enter NaCl calibration select the NaCl range and
press CAL.
The “BUF” and “CAL” tags are displayed. The primary LCD will display
the NaCl reading in percentage. The secondary LCD will display “100”.
The “ ” and “~” tags will blink.
When the reading is stable, the “READY” tag will be displayed and the
“CFM” tag starts blinking on the LCD, asking for confirmation.
Press CFM to confirm calibration.
The instrument stores the calibration value and returns to
measurement mode.
Notes: • If the reading is too far from the expected value,
“WRONG” “ ” tags will blink. Calibration cannot be confirmed.
• If the temperature of the buffer is out of the 0.0 ºC to
60.0 ºC temperature interval, the “WRONG” and “ºC” tags and the
temperature will blink.
• If a new EC calibration is performed, the NaCl calibration
is automatically cleared. A new NaCl calibration is required.
22
GOOD LABORATORY PRACTICE (GLP)
GLP is a set of functions that allows storage and retrieval of data regarding
the maintenance and status of the system.
All data regarding pH, Rel mV, EC and NaCl calibration is stored for the
user to review when necessary.
EXPIRED CALIBRATION
For pH calibration, this instrument allows the user to set the number of
days before the next required pH calibration. This value can be set from
1 to 7 days. The default setting is OFF (disabled).
When calibration has expired the “CAL” and “DUE” tags will blink to
warn the user that the instrument should be recalibrated.
For example, if a 4 days time out has been selected, the instrument will
issue the alarm exactly 4 days after the last calibration.
If the expiration value is changed (e.g. to 5 days), then the alarm will
be immediately recalculated and appear 5 days after the last calibration.
Note: If the instrument was not calibrated, the “CAL” “DUE” tags
will be displayed even if the feature is disabled in SETUP menu.
pH CALIBRATION DATA
Calibration data is stored automatically after a successful calibration.
To view the pH calibration data, press GLP when the instrument is in
pH measurement mode.
The instrument will display the time (hh:mm) of the last calibration.
Use the ARROW keys to scroll through the calibration data:
• The date (mm.dd.yyyy).
• The pH calibration offset.
23
• The pH calibration slope (the GLP slope is the average of the calibration
slopes; the percentage is referred to the ideal value of 59.16 mV/
pH).
• The calibration buffers in order.
The first pH calibration buffer:
The second pH calibration buffer:
The third pH calibration buffer:
The fourth pH calibration buffer:
The fifth pH calibration buffer:
Notes: • The “OLd” message displayed beside the pH value means
that this buffer was not used during last calibration. Press and hold
down the SETUP key if you want to see calibration date (or time
if old calibration was performed on the same day as the current
calibration).
• If “no bUF” message appears on the LCD, the instrument
informs you that calibration was performed in less than three points.
• Calibration Expiration status:
-if disabled.
24
-or the number of days until the calibration alarm will be displayed.
-or if expired (7 days ago).
• The instrument ID.
Relative mV CALIBRATION DATA
Relative mV calibration data is stored automatically after a successful
calibration.
To view the Relative mV calibration data, press GLP when the instrument
is in Relative mV measurement mode.
The instrument will display the time (hh:mm) of the last calibration.
Use the ARROW keys to scroll through the calibration data:
• The date (mm.dd.yyyy).
• The Relative mV calibration offset.
• The instrument ID.
25
EC CALIBRATION DATA
EC calibration data is stored automatically after a successful calibration.
To view the EC calibration data, press GLP when the instrument is in
EC measurement mode.
The instrument will display the time (hh:mm) of the last calibration.
Use the ARROW key to scroll through the calibration data:
• The date (mm.dd.yyyy).
• The calibration offset factor.
• The EC calibration buffer.
• The cell constant.
• The temperature coefficient.
• The instrument ID.
26
NaCl CALIBRATION DATA
NaCl calibration data is stored automatically after a successful calibration.
To view the NaCl calibration data, press GLP when the instrument is in
NaCl measurement mode.
The instrument will display the time (hh:mm) of the last calibration.
Use the ARROW key to scroll through the calibration data:
• The date (mm.dd.yyyy).
• The salinity coefficient.
• The cell constant.
• The instrument ID.
Notes: • If no temperature compensation is selected during calibra‑
tion, the temperature coefficient is not displayed in GLP.
• Press GLP at any moment and the instrument will return
to measurement mode.
• If calibration has not been performed on the selected
range, the instrument displays “no CAL” message blinking.
27
LOGGING FUNCTION
Up to 700 logged samples can be stored into memory.
200 manually logged records and 500 lot logging records can be stored
in the memory. To select logging type enter SETUP menu.
LOGGING THE CURRENT DATA (manual logging)
Select the manual logging mode in SETUP menu.
To store the current reading into memory press LOG while the instrument
is in measurement mode.
The instrument will display the current date on the primary LCD, the
record number on the secondary LCD, “LOG” and “Manual” tags for a
few seconds (see example below: record No. 11):
followed by the number of free records:
If there are less than 6 memory locations remaining, the record number
and “Lo” message will be displayed to alert the user.
If the log space is full (200 records), “FULL LOG” message will be
displayed and no more data will be saved.
When LOG is pressed, a complete set of information is stored: date, time,
pH, mV, EC, TDS, NaCl temperature and calibration data.
28
LOT LOGGING
Select “StAb” (stability logging) or the desired time interval.
To start interval logging press LOG key while the instrument is in
measurement mode.
When the selected interval is reached or when the reading is stable (for
log on stability), the instrument will display the current lot number on
the primary LCD line, the record number on the secondary LCD line and
the LOG tag (see example below: Lot 1 record 11):
followed by the number of free records on the corresponding memory
space.
If stability logging is selected, a complete set of data is memorized every
time the reading becomes stable after an unstable condition.
To stop interval logging press LOG key again. The “LOG” tag will be
cleared.
Note: When pressing any key that is not active, while lot logging
is running, the following message is displayed for a few seconds.
VIEW LOGGED DATA
Press the ALT&RCL keys while in measurement mode to retrieve the
stored information.
If no data was logged for the current selected measurement range and
no lots are memorized, one of the next messages will be displayed:
29
No pH measurements records:
No Relative mV and mV records:
No EC records:
No TDS records:
No NaCl records:
Otherwise, the instrument will display the lot number on the primary LCD
line, the number of records on the secondary, “RCL” tag and “CFM”
blinking. If samples were logged on demand, “Manual” will be displayed
on the primary LCD and the number of samples logged on the secondary
(see example on the next page: manual log, 1 sample logged).
Press ARROW keys to select different lot.
30
Press CFM to view record information.
• If RCL was entered while in pH measurement range:
In Rel mV range:
In EC measurement range:
In TDS measurement range:
In NaCl measurement range:
Use the ARROW keys to scroll through the records.
Note: The instrument will automatically skip log records from other
measurement ranges for the manual log.
To view additional information press RANGE.
For pH
• The mV value on the primary LCD and the temperature value on
the secondary LCD.
31
• The time on the primary LCD, along with “TIME” tag and the record
number on the secondary LCD.
• The date on the primary LCD, along with “DATE” tag.
• The calibration offset on the primary LCD and “OFFS” message on
the secondary LCD.
• The calibration slope on the primary LCD and “SLP” message on
the secondary LCD.
• The interval for lot logging.
To delete manual logged records: press CFM while “L” and “0” are
displayed to view manually logged records. Press the CLR key, “dEL”
and the record number will be displayed. Press CFM to delete. Use the
ARROW keys to change the record number.
To delete a lot, use the ARROW keys to select the desired lot. Press CLR
key, “dEL Lot” will appear on the display. Press CFM key to delete.
32
• Press SETUP to delete all records/lots. The display will show “dEL”
in the primary LCD and “ALL” in the secondary LCD.
• Press CFM to confirm delete. While deleting the “ ” tag will blink.
• Press CAL or RANGE or CLR to escape and return to the RCL screen.
• If “dEL ALL” option was selected, all the log on demand records or
lots are deleted. While deleting the “ ” tag is displayed blinking.
• Press ALT&RCL exit record information and enter lot information.
• Press ALT&RCL again to return to measurement mode.
• If one or more records/lots were deleted the “ ” tag blinks until the
log memory space is reorganized.
For Relative mV and mV Range
• The temperature value, the mV absolute value, the time and the
date as described above.
• The Relative mV offset.
For EC Range
• The time and date as described on pH Range.
• The EC on primary LCD and temperature value on the secondary
LCD.
• The offset factor on the primary LCD and “OFFS” message on the
secondary LCD.
• The cell constant on the primary LCD and “CELL” message on the
secondary LCD line.
33
• The temperature coefficient on the primary LCD and “tc” message
on the secondary LCD.
For TDS Range
• The temperature reading as described in pH range.
• The conductivity value on the primary LCD and the temperature
value on the secondary LCD.
• The time and the date as described in pH Range.
• The TDS factor on the primary LCD and the record number on the
secondary LCD.
• The temperature coefficient and the cell constant as described in
EC Range.
For NaCl Range
• The conductivity and temperature reading value as described in
TDS Range.
• The time and date as described in pH Range.
• The salinity factor on the primary LCD and the record number on
the secondary LCD, with “RCL” and “NaCl” tags displayed.
• The cell constant message as described above.
Press the ALT&RCL keys to leave RECALL mode at any time.
Note: When an information that does not display the record number
is selected, pressing the SETUP key will display the record number
on the secondary LCD line.
34
SETUP
Setup mode allows viewing and modifying the following instrument
parameters.
In according with the selected range, SETUP menu allows the possibility to
view and /or change specific range parameters and common parameters
(for all the ranges).
The common parameters are:
• Log interval
• Current Time (hour & minute)
• Current Date (year, month & day)
• Beep Status
• Instrument Id
• Temperature Unit
The specific parameters are:
In pH range
• Expired Calibration Alarm
• First Custom Buffer
• Second Custom Buffer
• One-point Calibration Behavior
• pH Resolution
In EC/TDS/NaCl range
• Cell Constant
• TDS Factor
• Temperature Compensation Coefficient
• Reference Temperature
To enter SETUP mode press SETUP while the instrument is in mea‑
surement mode.
Select a parameter with the ARROW keys.
Press CAL to change a parameter value. The selected parameter will
start blinking.
Press RANGE to toggle between displayed parameters.
Press the ARROW keys to increase or decrease the displayed value.
Press CFM to save the modified value or CAL to escape without saving.
35
EXPIRED CALIBRATION ALARM
Press CAL when the calibration time-out is displayed. Calibration time-out
(“OFF” or “1” to “7” days) and “CFM” will start blinking.
Press the ARROW keys to change the calibration time-out value.
Press CFM to save the modified calibration time-out value.
Press CAL to escape without saving.
LOG INTERVAL
Press CAL when log interval is displayed. The log interval and “CFM”
will start blinking (“LOG” for log on demand, “StAb” log on stability,
interval in seconds or minutes).
Press the ARROW keys to change the custom buffer value.
Press CFM to confirm the selection.
Press CAL to escape without saving.
FIRST CUSTOM BUFFER
Press CAL when “Cust. Buff. 1” is displayed. The custom buffer (disabled
– “no” or “0” to “16” pH) and “CFM” will start blinking.
Press the ARROW keys to change the custom buffer value.
Press CFM to save the modified custom buffer value.
Press CAL to escape without saving.
36
SECOND CUSTOM BUFFER
Press CAL when “Cust. Buff. 2” is displayed. The custom buffer (disabled
– “no” or “0” to ”16” pH) and “CFM” will start blinking.
Press the ARROW keys to change the custom buffer value.
Press CFM to save the modified custom buffer value.
Press CAL to escape without saving.
Note: To remove a custom buffer from the calibration list enter
custom buffer press CAL key then press CLR key. The “no” “Cust.
Buff. 1” or “Cust. Buff. 2” message will be displayed and the
instrument return for the SETUP parameter scroll mode.
ONE-POINT CALIBRATION BEHAVIOR
Press CAL when “1Pnt” message is displayed on the secondary LCD. One
of the two options (“Pnt” or “OFFS”) and “CFM” will start blinking (see
pH CALIBRATION PROCEDURE for details, page 13).
Press the ARROW keys to toggle -between “Pnt” and “OFFS” options.
Press CFM to save the behavior for one-point calibration.
Press CAL to escape without saving.
pH RESOLUTION
Press CAL when “rES” message is displayed on the secondary LCD. The
set resolution (“0.1”, “0.01” or “0.001”) and “CFM” will start blinking.
Press the ARROW keys to toggle between 0.1, 0.01 and 0.001 options.
Press CFM to save the modified value.
Press CAL to escape without saving.
37
CURRENT TIME
Press CAL when the current time is displayed. The hour and “CFM” will
start blinking.
Press the ARROW keys to change the hour.
Press RANGE. The minutes and “CFM” will start blinking.
Press the ARROW keys to change the minutes.
Press CFM to save the modified value.
Press CAL to escape without saving.
CURRENT DATE
Press CAL when the current date is displayed. The month and “CFM”
will start blinking.
Press the ARROW keys to change the month.
Press RANGE. The day and “CFM” will start blinking.
Press the ARROW keys to change the day.
Press RANGE. The year and “CFM” will start blinking.
Press the ARROW keys to change the year.
Press CFM to save the modified value.
Press CAL to escape without saving.
38
BEEP STATUS
Press CAL when the beep status is displayed. Beep status (“On” or
“OFF”) and “CFM” will start blinking.
Press the ARROW keys to change the beep status (On or OFF).
Press CFM to save the modified beep status.
Press CAL to escape without saving.
When enabled, beep sounds as a short beep every time a key is pressed
or when the calibration can be confirmed.
A long beep alert means that the pressed key is not active or a wrong
condition is detected while in calibration.
INSTRUMENT ID
Press CAL when “InId” is displayed. The instrument ID (“0000“ to
“9999“) and “CFM” will start blinking.
Press the ARROW keys to change the instrument ID value.
Press CFM to save the modified instrument ID value.
Press CAL to escape without saving.
Note: The instrument ID is downloaded to a PC as part of a logged
data set to identify its origin.
TEMPERATURE UNIT
Press CAL when “Unit“ is displayed. The temperature unit and “CFM”
will start blinking.
Press the ARROW keys to change the option.
Press CFM to save the modified temperature unit.
Press CAL to escape without saving.
39
CELL CONSTANT
Press CAL when the cell constant is displayed. The cell constant and
“CFM” will start blinking.
Press the ARROW keys to change the cell constant (0.500 to 1.700).
Press CFM to save the modified cell constant.
Press CAL to escape without saving.
TDS FACTOR
Press CAL when “TDSfact.” is displayed. The TDS factor and “CFM”
will start blinking.
Press the ARROW keys to change the TDS factor (0.40 to 0.80).
Press CFM to save the modified TDS factor.
Press CAL to escape without saving.
TEMPERATURE COMPENSATION COEFFICIENT
Press CAL when the temperature compensation coefficient is displayed.
The temperature compensation coefficient and “CFM” will start blinking.
Press the ARROW keys to change the temperature compensation
coefficient. (0.00 to 6.00 %/ºC).
Press CFM to save the modified temperature compensation coefficient.
Press CAL to escape without saving.
40
REFERENCE TEMPERATURE
Press CAL when the reference temperature is displayed. The reference
temperature and “CFM” will start blinking.
Press the ARROW keys to toggle between 20.0 ºC and 25.0 ºC reference
temperature value.
Press CFM to save the modified reference temperature value.
Press CAL to escape without saving.
41
TEMPERATURE CALIBRATION
(for technical personnel only)
The instrument has two temperature channels: one that measures the
temperature from the HI7662 probe while the instrument is in pH/mV
range and the other that measures temperature from the EC probe while
the instrument is in EC/TDS/NaCl range.
All the instruments are factory calibrated for temperature on both
channels.
Hanna Instruments’ temperature probes are interchangeable and no
temperature calibration is needed when they are replaced.
If the temperature measurements are inaccurate, temperature recalibra‑
tion should be performed.
For an accurate recalibration, contact your local Hanna Instruments Office,
or follow the instructions below.
• Prepare a vessel containing ice and water and another one containing
hot water (around 50 ºC). Place insulation material around the vessels
to minimize temperature changes.
• Use a calibrated thermometer with a resolution of 0.1 ºC as a
reference thermometer. Connect the HI7662 probe to the appropriate
socket for the pH temperature channel or the HI76310 probe for the
EC temperature channel.
• With the instrument off, press and hold down the CFM & SETUP
keys, then power on the instrument to calibrate the pH temperature
channel or &RANGE keys and then power on the instrument to
calibrate the EC temperature channel. The “CAL” tag will appear
and the secondary LCD will show “0.0 ºC“.
• Submerse the temperature probe (or EC probe) in the vessel with ice
and water as near as possible to the calibrated thermometer. Allow
a few seconds for the probe to stabilize.
• Use the ARROW keys to set the reading on the secondary LCD to that
of ice and water, measured by the calibrated thermometer. When
the reading is stable and close to the selected calibration point, the
“CFM” tag will blink.
• Press CFM to confirm. The secondary LCD will show “50.0 ºC“.
42
• Press CFM to confirm. The secondary LCD will show “50.0 ºC“.•
Submerse the temperature probe (or EC probe) in the second vessel as
near as possible to the calibrated thermometer. Allow a few seconds
for the probe to stabilize.
• Use the ARROW keys to set the reading on the secondary LCD to
that of the hot water.
• When the reading is stable and close to the
selected calibration point, the “CFM” tag will
blink.
• Press CFM to confirm. The instrument will memorize calibration and
restart in measurement mode.
Note: If the reading is not close to the selected calibration point,
“WRONG” tag will blink. Change the temperature probe (or EC
probe) and restart calibration.
43
mV CALIBRATION
(for technical personnel only)
All the instruments are factory calibrated for mV.
Hanna Instruments’ ORP electrodes are interchangeable and no mV
calibration is needed when they are replaced.
If the mV measurements are inaccurate, mV recalibration should be
performed.
For an accurate recalibration, contact your local Hanna Instruments Office.
A two-point calibration can be performed at 0.0 mV and 1800.0 mV.
• Attach to the BNC connector a mV simulator with an accuracy of
±0.1 mV.
• With the instrument off, press and hold down the CAL & keys,
then power on the instrument. The “CAL” tag will appear and the
secondary LCD will show “0.0 mV“.
• Set 0.0 mV on the simulator.
When the reading is stable and close to the selected calibration point,
the “CFM” tag will blink.
• Press CFM to confirm. The secondary LCD will display “1800 mV“.
• Set 1800.0 mV on the simulator.
When the reading is stable and close to the selected calibration point,
the “CFM” tag will blink.
• Press CFM to confirm. The instrument will memorize calibration
and restart to measurement mode.
Notes: • If the reading is not close to the selected calibration point,
“WRONG” tag will blink. Verify calibration condition or contact your
vendor if you can not calibrate.
• Pressing CAL key during calibration process the instrument
quit calibration mode and restart to measurement mode without
memorizing calibration.
44
PC INTERFACE
Data transmission from the instrument to the PC can be done with the
HI92000 Windows® compatible software (optional). HI92000 also
offers graphing and an on-line help feature.
To allow our users access to the latest version of Hanna Instruments
PC compatible software, we made the products available for download
at http://software.hannainst.com. Select the product code and click
Download Now. After download is complete, use the setup.exe file to
install the software.
Data can be exported to the most popular spreadsheet programs for
further analysis. To connect your instrument to a PC, use a standard
USB cable connector. Make sure that your instrument is switched off
and plug one connector to the instrument’s USB socket and the other to
the USB port of your PC.
Note: If you are not using Hanna Instruments HI92000 software,
please see the following instructions.
SENDING COMMANDS FROM PC
It is also possible to remotely control the instrument with any terminal
program. Use a standard USB cable to connect the instrument to a PC,
start the terminal program and set the communication options as follows:
8, N, 1, no flow control, 9600 baud rate.
COMMAND TYPES
To send a command to the instrument the scheme is:
<command prefix> <command> <CR>
<command prefix> is a selectable ASCII character
where:
between 0 and 47.
<command> is the command code (3 characters).
Note: Either small or capital letters can be used.
SIMPLE COMMANDS
Is equivalent to pressing RANGE
RNG
CAL
Is equivalent to pressing CAL
CFM
Is equivalent to pressing CFM
UPC
Is equivalent to pressing the UP arrow key
Is equivalent to pressing the DOWN arrow key
DWC
Is equivalent to pressing SETUP
SET
LOG
Is equivalent to pressing LOG
MOD
Is equivalent to pressing MODE
GLP
Is equivalent to pressing GLP
RCL
Is equivalent to pressing RCL
45
Change the instrument range according with the parameter
value (xx):
• xx=00
pH range/0.001 resolution
• xx=01
pH range/0.01 resolution
• xx=02
pH range/0.1 resolution
• xx=03
mV range
• xx=04
Relative mV range
• xx=06
EC range
• xx=07
TDS range
• xx=08
NaCl range
The instrument sends the “ACK” (6) character every time a command is
recognized and a “NAK” (21) character for invalid commands.
CHRxx
COMMANDS REQUIRING AN ANSWER
Causes the instrument to send a complete set of readings in
according with the current range:
• pH, mV and temperature reading on pH range.
• mV and temperature reading on mV range.
• Rel mV, absolute mV and temperature reading on
Rel mV range.
• Conductivity and temperature reading on EC range.
• TDS and temperature reading on TDS range.
• NaCl and temperature reading on NaCl range.
The answer string contains:
• Meter mode (2 chars):
• 00- pH range (0.001 resolution)
• 01- pH range (0.01 resolution)
• 02- pH range (0.1 resolution)
• 03- mV range
• 04- Rel mV range
• 06- EC range
• 07- TDS range
• 08- NaCl range
• Meter status (2 chars of status byte): represents a 8
bit hexadecimal encoding.
• 0x10- temperature probe is connected
• 0x01- new GLP data available
• 0x02- new SETUP parameter
RAS
46
• Reading status (2 chars): R - in range, O - over
range, U - under range. First character corresponds
to the appropriate range reading. Second character
corresponds to mV reading (if exist).
• Primary reading (corresponding to the selected
range) - 7 ASCII chars, including sign and decimal
point.
• Secondary reading (only when primary reading is
not mV, EC, NaCl, TDS) - 7 ASCII chars, including
sign and decimal point.
• Temperature reading - 8 ASCII chars, with sign and
two decimal points, always in ºC.
MDR
Requests the instrument model name and firmware code.
GLP
Requests the calibration data record.
The answer string contains:
• GLP status (1 char): represents a 4 bit hexadecimal
encoding.
• 0x01- pH calibration available
• 0x02- Rel mV calibration available
• 0x04- EC calibration available
• 0x08- NaCl calibration available
• pH calibration data (if available), which contains:
• the number of calibrated buffers (1 char)
• the offset, with sign and decimal point (7 chars)
• the average of slopes, with sign and decimal point (7
chars)
• the calibration time, yymmddhhmmss (12 chars)
• buffers information (for each buffer)
• type (1 char): 0 - standard, 1 - custom
• status (1 char): N (new) - calibrated in last
calibration; O (old) - from an old calibration.
• warnings during calibration (2 chars): 00 - no
warning, 04 - Clean Electrode warning.
• buffer value, with sign and decimal point
(7 chars).
• the calibration time, yymmddhhmmss
(12 chars).
• Rel mV calibration data (if available), which contains:
• the calibration offset, with sign (7 chars)
• the calibration time, yymmddhhmmss
(12 chars).
47
• EC calibration data (if available), which contains:
• the number of calibrated standards (1 char)
• the offset factor, with sign and decimal point
(7 chars)
• the cell constant, with sign and decimal point
(7 chars)
• the calibration time, yymmddhhmmss (12 chars)
• standards information (for each standard)
• standard value, with sign and decimal point
(7 chars).
• buffer unit (2 chars; 00-µS; 01-mS)
• Reference Temperature with and decimal point
(4 chars)
• Temperature Compensation mode (2 chars)
• 00- no temperature compensation
• 01- automatic temperature compensation
• 00- manual temperature compensation
• TC coefficient with sign and decimal point
(4 chars)
• calibration time, yymmddhhmmss (12 chars).
• Na Cl Calibration data
• the number of calibrated data (1 char)
• salinity coefficient, with sign and decimal point
(7 chars)
• Cell constant, with sign and decimal point
(2 chars)
• the calibration time (2 chars)
• buffer information, for each buffer:
• Reference Temperature with and decimal point
(4 chars)
• Temperature Compensation mode (2 chars)
• 00- no temperature compensation
• 01- automatic temperature compensation
• 00- manual temperature compensation
• TC coefficient with sign and decimal point
(4 chars)
• calibration time, yymmddhhmmss (12 chars).
PAR Requests the setup parameters setting.
The answer string contains:
• Instrument ID (4 chars)
48
• Calibration alarm time out for pH range (2 chars)
• SETUP information (2 chars): 8 bit hexadecimal
encoding.
• 0x01 - beep ON (else OFF)
• 0x04 - degrees Celsius (else degrees Fahrenheit)
• 0x08 - Offset calibration (else Point calibration)
• The number of custom buffers (1 char)
• The custom buffer values, with sign and decimal
point, for each defined custom buffer (7 chars)
• Log type 2 chars
01- manual log
02- stability lot log
03 to 14- the coresponding interval for lot log
(5 s to 180 min)
• cell constant, with sign and decimal point (6 chars)
• TDS factor, with sign and decimal point (5 chars)
• TC coef, with sign and decimal point (5 chars)
• Reference Temperature, with sign and decimal point
(5 chars)
• Temperature Compensation mode (1 char)
Requests the number of logged samples.
NSLx
x = P- request for pH range
M- request for mV range
E- request for EC range
N- request for NaCl range
T- request for TDS range
LODxnnn: request the”nnn” record of the manual log on the “x” range
LODxALLff: groups all Log On Demand Records in frames of 8 records
each for the selected range
Command Parameters:
x- range (see Note)
ALL- download all records for the selected range
ff- requested frame number - first frame is labeled 01
LLsxff: requests information about all lots on the specified range, it sends
the information in frames of 10 lots each (a frame contains information
about 10 lots)
Command Parameters:
x- range (see Note)
ff- requested frame number - first frame is labeled 01
49
GLDxxxff: Requests the records of the “xxx” lot number. The records are
sent in frames of 10 records; “ff” is the frame number (01
first frame). (Example: Lot 13 has 53 records. The records will
be sent in 6 frame, 5 with10 records and 1 with 3 records.)
Command Parameters:
xxx- Lot number (eq: for lot number 1 xxx = 001)
ff- requested frame number - first frame is labeled 01
Errors: •
•
•
•
•
•
•
“Err3” log on demand empty.
“Err4” requested set parameter is not available.
“Err5” command argument is wrong.
“Err6” requested range not available.
“Err7” meter in log mode.
“Err8” is sent if instrument is not in measurement mode.
“NAK” (21) character is sent when the instrument receives
an unknown or a corrupted command.
Note: P - request for pH range.
M - request for mV range.
E - request for EC range.
T - request for TDS range.
N - request for NaCl range.
50
ELECTRODE CONDITIONING
AND MAINTENANCE
PREPARATION PROCEDURE
Remove the protective cap of the pH electrode.
DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. This is normal
with electrodes. They will disappear when rinsed with water.
During transport, tiny bubbles of air may form inside the glass bulb
affecting proper functioning of the electrode. These bubbles can be
removed by “shaking down” the electrode as you would do with a glass
thermometer.
If the bulb and/or junction is dry, soak the electrode in HI70300 or
HI80300 Storage Solution for at least one hour.
51
For refillable electrodes:
If the filling solution (electrolyte) is more than 2½ cm (1”) below the fill
hole, add HI7082 or HI8082 3.5M KCl Electrolyte Solution for double
junction or HI7071 or HI8071 3.5M KCl+AgCl Electrolyte Solution for
single junction electrodes.
For faster response, unscrew the fill hole screw during measurements.
For AMPHEL® electrodes:
If the electrode does not respond to pH changes, the battery is run down
and the electrode should be replaced.
MEASUREMENT
Rinse the pH electrode tip with distilled water. Submerse the tip
3 cm (1¼”) in the sample and stir gently for a few seconds.
For a faster response and to avoid cross-contamination of the samples,
rinse the electrode tip with a few drops of the solution to be tested, before
taking measurements.
Take care that the sleeve holes of the EC probe are completely submersed.
Tap the probe repeatedly to remove air bubbles that may be trapped
inside the sleeve.
STORAGE PROCEDURE
To minimize clogging and assuring a quick response time, the glass
bulb and the junction of pH electrode should be kept moist and not
allowed to dry out.
Replace the solution in the protective cap with a few drops of HI70300
or HI80300 Storage Solution or, in its absence, Filling Solution (HI7071
or HI8071 for single junction and HI7082 or HI8082 for double junction
electrodes). Follow the Preparation Procedure on page 53 before taking
measurements.
Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED
WATER.
PERIODIC MAINTENANCE
Inspect the electrode and the cable. The cable used for connection to the
instrument must be intact and there must be no points of broken insulation
on the cable or cracks on the electrode stem or bulb. Connectors must
be perfectly clean and dry. If any scratches or cracks are present, replace
the electrode. Rinse off any salt deposits with water.
52
PH ELECTRODE MAINTENANCE
For refillable electrodes:
Refill the reference chamber with fresh electrolyte (HI7071 or HI8071 for
single junction and HI7082 or HI8082 for double junction electrodes).
Allow the electrode to stand upright for 1 hour.
Follow the Storage Procedure above.
pH ELECTRODE CLEANING PROCEDURE
Soak in Hanna Instruments HI7061 or HI8061 General
• General
Cleaning Solution for approximately ½ hour.
Soak in Hanna Instruments HI7073 or HI8073 Protein
• Protein
Cleaning Solution for 15 minutes.
Soak in Hanna Instruments HI7074 Inorganic Cleaning
• Inorganic
Solution for 15 minutes.
• Oil/grease Rinse with Hanna Instruments HI7077 or HI8077 Oil
and Fat Cleaning Solution.
IMPORTANT: After performing any of the cleaning procedures, rinse the
electrode thoroughly with distilled water, refill the reference chamber
with fresh electrolyte (not necessary for gel-filled electrodes) and soak
the electrode in HI70300 or HI80300 Storage Solution for at least
1 hour before taking measurements.
EC Probe Maintenance
Rinse the probe with clean water after measurements. If a more thorough
cleaning is required, remove the probe sleeve and clean the probe with a
cloth or a nonabrasive detergent. Make sure to reinsert the sleeve onto
the probe properly and in the right direction. After cleaning the probe,
recalibrate the instrument.
The platinum rings support is made of glass. Take great care while
handling the probe.
53
TROUBLESHOOTING GUIDE
SYMPTOMS
PROBLEM
Slow response/excessive Dirty pH electrode.
drift measuring pH.
Readings fluctuate up
and down (noise).
The meter does not
accept the calibration
solution for calibration.
If the display shows:
“pH” and “-2.00” or
“16.00” blinking.
If the display shows:
“mV” and “-2000” or
“2000” blinking.
The display shows EC,
TDS or NaCl reading
blinking.
SOLUTION
Soak the electrode tip
in HI7061 or HI8061
for 30 minutes and then
clean the electrode.
Clogged/dirty junction. Clean the electrode.
Low electrolyte level
Refill with fresh solution
(refillable pH electrodes (for refillable pH elec‑
only). EC probe sleeve trodes only). Insert the
not properly inserted; air sleeve. Tap the probe to
bubbles inside sleeve. remove air bubbles.
Out of order pH electrode. Follow the cleaning pro‑
Dirty electrode or
cedure. If still no results
contaminated calibration replace the electrode.
solution.
Out of range in the pH a) Recalibrate the meter.
scale.
b) Make sure the pH
sample is in the specified
range.
c) Check the electrolyte
level and the general
state of the electrode.
Out of range in the mV Electrode not connected.
scale.
Verify that the electrode
is connect.
Out of range in EC, TDS Recalibrate the meter.
or NaCl scale.
Make sure the solution is
in specified range.
Make sure the LOCK key
was not pressed.
Broken temperature
Replace the temperature
probe or wrong tempera‑ probe.
ture probe used.
Broken electrode.
Replace the electrode.
The meter does not
work with the tempera‑
ture probe.
The meter fails to
calibrate or gives faulty
readings.
The meter fails to
Incorrect EC calibration. Recalibrate the meter in
calibrate NaCl.
EC range.
Set cell constant to 1.
At startup the meter One of the keys is
Check the keyboard or
displays all LCD tags blocked.
contact the vendor.
permanently.
“Err xx” error message Internal error.
Power off the meter and
displayed.
then power it on. If the
error persists, contact the
vendor.
54
TEMPERATURE CORRELATION
FOR pH SENSITIVE GLASS
The resistance of glass electrodes partially depends on the temperature.
The lower the temperature, the higher the resistance. It takes more time
for the reading to stabilize if the resistance is higher. In addition, the
response time will suffer to a greater degree at temperatures below 25 ºC.
Since the resistance of the pH electrode is in the range of 50–
200 Mohm, the current across the membrane is in the pico Ampere range.
Large currents can disturb the calibration of the electrode for many hours.
For these reasons high humidity environments, short circuits and static
discharges are detrimental to a stable pH reading.
The pH electrode’s life also depends on the temperature. If constantly used
at high temperatures, the electrode life is drastically reduced.
Typical Electrode Life
Ambient Temperature
1 – 3 years
90 ºC
Less than 4 months
120 ºC
Less than 1 month
Alkaline Error
High concentrations of sodium ions interfere with readings in alkaline
solutions. The pH at which the interference starts to be significant depends
upon the composition of the glass. This interference is called alkaline
error and causes the pH to be underestimated. Hanna Instruments’ glass
formulations have the indicated characteristics.
Sodium Ion Correction for the Glass at 20-25 ºC
Concentration
pH
Error
13.00
0.10
0.1 Mol L-1 Na+
13.50
0.14
14.00
0.20
12.50
0.10
13.00
0.18
1.0 Mol L-1 Na+
13.50
0.29
14.00
0.40
55
ACCESSORIES
pH BUFFER SOLUTIONS
HI70004P pH4.01 Buffer Sachets, 20 mL, 25 pcs
HI70007P pH7.01 Buffer Sachets, 20 mL, 25 pcs
HI70010P pH10.01 Buffer Sachets, 20 mL, 25 pcs
HI7001L pH1.68 Buffer Solution, 500 mL
HI7004L pH4.01 Buffer Solution, 500 mL
HI7006L pH6.86 Buffer Solution, 500 mL
HI7007L pH7.01 Buffer Solution, 500 mL
HI7009L pH9.18 Buffer Solution, 500 mL
HI7010L pH10.01 Buffer Solution, 500 mL
HI8004L pH4.01 Buffer Solution in FDA approved bottle, 500 mL
HI8006L pH6.86 Buffer Solution in FDA approved bottle, 500 mL
HI8007L pH7.01 Buffer Solution in FDA approved bottle, 500 mL
HI8009L pH9.18 Buffer Solution in FDA approved bottle, 500 mL
HI8010L pH10.01 Buffer Solution in FDA approved bottle, 500 mL
pH ELECTRODE STORAGE SOLUTIONS
HI70300L Storage Solution, 500 mL
HI80300L Storage Solution in FDA approved bottle, 500 mL
CLEANING SOLUTIONS
HI7061M General Cleaning Solution, 230 mL bottle
HI7061L General Cleaning Solution, 500 mL bottle
General Cleaning Solution,
HI8061M
230 mL bottle FDA approved bottle
General Cleaning Solution,
HI8061L
500mL bottle FDA approved bottle
HI70000P Electrode Rinse Sachets, 20 mL, 25 pcs
HI7073L Protein Cleaning Solution, 500 mL
HI7074L Inorganic Cleaning Solution, 500 mL
HI7077L Oil & Fat Cleaning Solution,500 mL
HI8073L Protein Cleaning Solution in FDA approved bottle, 500 mL
HI8077L Oil & Fat Cleaning Solution in FDA approved bottle, 500 mL
pH ELECTRODE REFILL ELECTROLYTE SOLUTIONS
3.5M KCl + AgCl Electrolyte, 4x30 mL, for single junction
HI7071
electrodes
HI7072 1M KNO3 Electrolyte, 4x30 mL
HI7082 3.5M KCl Electrolyte, 4x30 mL, for double junction electrodes
3.5M KCl + AgCl Electrolyte in FDA approved bottle,
HI8071
4x30 mL, for single junction electrodes
HI8072 1M KNO3 Electrolyte in FDA approved bottle, 4x30 mL
3.5M KCl Electrolyte in FDA approved bottle, 4x30 mL,
HI8082
for double junction electrodes
56
ORP PRETREATMENT SOLUTIONS
HI7091L Reducing Pretreatment Solution, 500 mL
HI7092L Oxidizing Pretreatment Solution, 500 mL
CONDUCTIVITY SOLUTIONS
HI70030P 12880 µS/cm (µmho/cm), 20 mL sachets (25 pcs.)
HI70031P 1413 µS/cm (µmho/cm), 20 mL sachets (25 pcs.)
HI70039P 5000 µS/cm (µmho/cm), 20 mL sachets (25 pcs.)
HI7030M 12880 µS/cm (µmho/cm), 230 mL bottle
HI7031M 1413 µS/cm (µmho/cm), 230 mL bottle
HI7033M 84 µS/cm (µmho/cm), 230 mL bottle
HI7034M 80000 µS/cm (µmho/cm), 230 mL bottle
HI7035M 111800 µS/cm (µmho/cm), 230 mL bottle
HI7039M 5000 µS/cm (µmho/cm), 230 mL bottle
HI7030L 12880 µS/cm (µmho/cm), 500 mL bottle
HI7031L 1413 µS/cm (µmho/cm), 500 mL bottle
HI7033L 84 µS/cm (µmho/cm), 500 mL bottle
HI7034L 80000 µS/cm (µmho/cm), 500 mL bottle
HI7035L 111800 µS/cm (µmho/cm), 500 mL bottle
HI7039L 5000 µS/cm (µmho/cm), 500 mL bottle
HI7037L 100% NaCl sea water standard solution, 500 mL bottle
HI8030L 12880 µS/cm (µmho/cm), 500 mL FDA approved bottle
HI8031L 1413 µS/cm (µmho/cm), 500 mL FDA approved bottle
HI8033L 84 µS/cm (µmho/cm), 500 mL FDA approved bottle
HI8034L 80000 µS/cm (µmho/cm), 500 mL FDA approved bottle
HI8035L 111800 µS/cm (µmho/cm), 500 mL FDA approved bottle
HI8039L 5000 µS/cm (µmho/cm), 500 mL FDA approved bottle
TDS SOLUTIONS
HI70080C 800 ppm (mg/L), 20 mL (25 pcs.)
HI70080P 800 ppm (mg/L), 20 mL (25 pcs.)
HI70032C 1382 ppm (mg/L), 20 mL (25 pcs.)
HI70032P 1382 ppm (mg/L), 20 mL (25 pcs.)
HI70442C* 1500 ppm (mg/L), 20 mL (25 pcs.)
HI70442P* 1500 ppm (mg/L), 20 mL (25 pcs.)
HI77200C* 1500 ppm (mg/L) & pH7.01, 20 mL (10 pcs.)
HI77200P* 1500 ppm (mg/L) & pH7.01, 20 mL (10 pcs.)
HI7032M 1382 ppm (mg/L), 230 mL
HI7032L 1382 ppm (mg/L), 500 mL
HI70442M* 1500 ppm (mg/L), 230 mL
HI70442L* 1500 ppm (mg/L), 500 mL
* 1500 ppm TDS have an approximate conversion factor of:
0.65 ppm = 1 µS/cm conversion rate.
57
pH ELECTRODES
All electrodes part numbers ending in B are supplied with a BNC connector
and 1 m (3.3’) cable, as shown below :
HI1043B
Glass-body, double junction, refillable, combination pH electrode.
Use: strong acid/alkali.
HI1053B
Glass-body, triple ceramic, conic shape, refillable, combination pH
electrode.
Use: emulsions.
HI1083B
Glass-body, micro, Viscolene, non-refillable, combination pH electrode.
Use: biotechnology, micro titration.
HI1131B
Glass-body, double junction, refillable, combination pH electrode.
Use: general purpose.
58
HI1330B
Glass-body, semimicro, single junction, refillable, combination pH
electrode.
Use: laboratory, vials.
HI1331B
Glass-body, semimicro, single junction, refillable, combination pH
electrode.
Use: flasks.
HI1230B
Plastic-body (PES), double junction, gel-filled, combination pH electrode.
Use: general, field.
HI2031B
Glass-body, semimicro, conic, refillable, combination pH electrode.
Use: semisolid products.
HI1332B
Plastic-body (PES), double junction, refillable, combination pH electrode.
Use: general purpose.
59
FC100B
Plastic-body (PVDF), double junction, refillable, combination pH
electrode.
Use: general purpose for food industry.
FC200B
Plastic-body (PVDF), open junction, conic, Viscolene, non-refillable,
combination pH electrode. Use: meat & cheese.
FC210B
Glass-body, double junction, conic, Viscolene, non-refillable, combination
pH electrode. Use: milk, yogurt.
FC220B
Glass-body, triple-ceramic, single junction, refillable, combination pH
electrode. Use: food processing.
FC911B
Plastic-body (PVDF), double junction, refillable with built-in amplifier,
combination pH electrode. Use: very high humidity.
60
HI1413B
Glass-body, single junction, flat tip, Viscolene, non-refillable, combination
pH electrode. Use: surface measurement.
ORP ELECTRODES
HI3131B
Glass-body, refillable, combination platinum ORP electrode.
Use: titration.
HI3230B
Plastic-body (PES), gel-filled, combination platinum ORP electrode.
Use: general purpose.
HI4430B
Plastic-body (PES), gel-filled, combination gold ORP electrode.
Use: general purpose.
Consult the Hanna Instruments General Catalog for more electrodes with
screw-type or BNC connectors.
61
EXTENSION CABLE FOR SCREW-TYPE ELECTRODES
(SCREW TO BNC ADAPTER)
HI7855/1 Extension cable 1 m (3.3’) long
HI7855/3 Extension cable 3 m (9.9’) long
OTHER ACCESSORIES
HI710005 Voltage adapter from 115 VAC to 12 VDC (USA plug)
Voltage adapter from 230 VAC to 12 VDC
HI710006
(European plug)
HI710012 Voltage adapter from 240 VAC to 12 VDC (UK plug)
HI710014 Voltage adapter from 230 VAC to 12 VDC (Australia plug)
ChecktempC Pocket-size thermometer (range –50.0 to 150.0 ºC)
HI76404N Electrode holder
pH and ORP electrode simulator with 1 m (3.3’) coaxial
HI8427
cable ending in female BNC connectors
pH and ORP electrode simulator with LCD and 1 m (3.3’)
HI931001
coaxial cable ending in female BNC connectors
Platinum 4-ring conductivity/TDS probe with temperature
HI76310
sensor and 1 m (3.3’) cable
HI7662
Temperature probe with 1 m (3.3’) cable
HI92000
Windows® compatible software.
Windows® is registered Trademark of “Microsoft Co.”
62
CERTIFICATION
All Hanna Instruments conform to the CE European Directives.
Disposal of Electrical & Electronic Equipment. The
product should not be treated as household waste.
Instead hand it over to the appropriate collection point
for the recycling of electrical and electronic equipment
which will conserve natural resources.
Disposal of waste batteries. This product contains batteries,
do not dispose of them with other household waste. Hand
them over to the appropriate collection point for recycling.
Ensuring proper product and battery disposal prevents potential
negative consequences for the environment and human health. For
more information, contact your city, your local household waste disposal
service, the place of purchase or go to www.hannainst.com.
RECOMMENDATIONS FOR USERS
Before using this product, make sure it is entirely suitable for your specific
application and for the environment in which it is used. Any variation
introduced by the user to the supplied equipment may degrade the meter’s
performance. For yours and the meter’s safety do not use or store the
meter in hazardous environments.
WARRANTY
HI2550 is guaranteed for two years against defects in workmanship and
materials when used for their intended purpose and maintained according
to instructions. Electrodes and probes are guaranteed for six months. This
warranty is limited to repair or replacement free of charge. Damage due
to accidents, misuse, tampering or lack of prescribed maintenance is not
covered. If service is required, contact your local Hanna Instruments Office.
If under warranty, report the model number, date of purchase, serial
number and the nature of the problem. If the repair is not covered by the
warranty, you will be notified of the charges incurred. If the instrument
is to be returned to Hanna Instruments, first obtain a Returned Goods
Authorization number from the Technical Service department and then
send it with shipping costs prepaid. When shipping any instrument, make
sure it is properly packed for complete protection.
Hanna Instruments reserves the right to modify the design,
construction or appearance of its products without advance notice.
63
World Headquarters
Hanna Instruments Inc.
Highland Industrial Park
584 Park East Drive
Woonsocket, RI 02895 USA
www.hannainst.com
MAN2550 06/19
Printed in ROMANIA
64
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