Sper Scientific 850055 User Manual

Advanced pH/ORP Meter

850055

Instruction Manual

1

TABLE OF CONTENTS

INTRODUCTION. . . . . . . . . . . . . . . . . . . . . . . .

FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . .

POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . .

LCD DISPLAY. . . . . . . . . . . . . . . . . . . . . . . . . . .

KEYPAD. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

SETUP MODE. . . . . . . . . . . . . . . . . . . . . . . . . ..

P1.0 Memory Transmission . . . . . . . . . . . . .

P2.0 Clear Memory . . . . . . . . . . . . . . . . . . .

P3.0 View Slope & Offset (pH Probe) . . . . . .

P4.0 pH Calibration Buffer . . . . . . . . . . .

Select Buffer . . . . . . . . . . . . . . . . . . . . . . . . .

P5.0 Ready Icon . . . . . . . . . . . . . . . . . . . . . .

5

6

7

8

9

10-18

10

11

13

14

14

15

P6.0 Temperature Units. . . . . . . . . . . . . . . . .

P7.0 Real Time Clock Setting . . . . . . . . . . . .

P8.0 Reset . . . . . . . . . . . . . . . . . . . . . . . . . .

PH PROBE CALIBRATION. . . . . . . . . . . . . . . .

MEASUREMENT PROCEDURES . . . . . . . . . . .

pH Measurement . . . . . . . . . . . . . . . . . . . . .

mV Measurement (± 499 mV) . . . . . . . . . . . .

ORP (mV) Measurement (±1999 mV). . . . . .

2

16

17

18

19

21-26

21

22

23

TABLE OF CONTENTS

Temperature Compensation. . . . . . . . . . . . . . . .

Hold Function . . . . . . . . . . . . . . . . . . . . . . . . . . .

Record Memory . . . . . . . . . . . . . . . . . . . . . . . . . .

Recall Memory . . . . . . . . . . . . . . . . . . . . . . . . . .

Recall Maximum & Minimum . . . . . . . . . . . . . . . .

Backlight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Auto Power Off . . . . . . . . . . . . . . . . . . . . . . . . . .

MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . .

ERROR CODES . . . . . . . . . . . . . . . . . . . . . . . . . . . .

PC CONNECTION . . . . . . . . . . . . . . . . . . . . . . . . . .

APPENDIX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

24

24

25

25

26

26

26

27

32

33

34

36

OPTIONAL ACCESSORIES . . . . . . . . . . . . . . . . . . .

SPECIFICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . .

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3

37

38

40

INTRODUCTION

Thank you for purchasing the Advanced pH/ORP Meter.
This meter reads the pH (balance of alkalinity and acidity)
and ORP (oxidation reduction potential) in the
determination of water quality in labs, industrial and
municipal waste water aquariums, fish hatcheries,
environmental testing and other applications.

4

FEATURES

 Multi-display LCD screen

 Automatic buffer recognition

 5 points pH calibration

 Hold function

 Maximum and minimum

 Backlight for dark environment operation

 Easy to view probe calibration data

 “Ready” icon on LCD display indicates stability for

reading

 USB connection for online logging and uploading 99

memories to PC for analysis

 Automatic or manual temperature compensation

 External power adapter (optional) for long use testing

 Auto power off to save battery

5

POWER SUPPLY

The meter is powered by 4 “AAA” type batteries or a 9 Volt
external adapter. Insert batteries into the battery
compartment observing correct polarity and secure.

Tripod mountable

Observe correct polarity

When the battery is low the “ ” icon appears on the LCD
display; replace the batteries.

6

LCD DISPLAY

LCD display indicates pH, mV, ORP (mV).

Icon pH, mV indicates the unit of measure displayed.

READY indicates the reading is stable.

MAX, MIN indicate maximum or minimum memory value.

HLD Holds the current reading on the display.

REC indicates the meter is in recall mode.

The two digits to the right of °C °F on the display indicate
the total number of records that contain stored data.

The

H:M:S (Hour-Minute-Second).

ATC means the meter is in automatic temperature

compensation mode.

°C and °F are temperature units of measure, to the right of
the real time display.

CAL indicates the meter is in calibration mode.

are real time Y-M-D (Year-Month-Date) or

7

KEYPAD

POWER/SET

CAL/ESC

HLD/REC

MODE/▲

MEM/▼

Press to turn meter on/off.
Press and hold for more than 1
second to enter SET mode.

Switch between NORMAL and
CALIBRATION mode.
Press to enter manual
temperature setting. In
calibration, setting or recall
mode, press to return to normal.

Press to freeze reading.
Press again to release.
Press for more than 1 second to
switch between NORMAL and
RECALL mode.

Press to switch mode.
Press to increase setting value.

Press to save current reading.
Press to decrease the setting
value.

MN/MX/AV

Press to confirm calibration or
parameter setting.
Press to view the min/max of
the memory in recall mode.

8

SETUP MODE

The advanced Setup Mode allows you to customize the
following meter preferences and defaults:

 P1.0 Memory Transmission

 P2.0 Clear Memory

 P3.0 Electrode (pH probe)

 P4.0 Buffer Solution (pH)

 P5.0 Ready Function

 P6.0 Temperature Units

 P7.0 Real Time Clock

 P8.0 Reset

To enter Setup Mode, press SET for more than 2 seconds
while the meter is in Normal Mode.

Note...

To exit Setup Mode without saving, press ESC until the
Normal Mode appears. If the meter is in Setup Mode, press

ESC twice to exit.

P1.0 Memory Transmission

To transfer stored data from the meter to the computer:

1. Connect the USB cable to the right side of the meter,
then connect the other end of the cable with the D-sub
connector to the computer’s serial port. Run the
software associated with this feature.

2. Press SET for 2 seconds to enter setup. The “TR” icon
appears on the middle of the LCD display and P1.0

9

SETUP MODE

displays under the “TR” icon.

3. Press MN/MX/AV. The “OUT” icon flashes on the
upper display and P1.1 displays under the “OUT” icon.
This indicates that the memories are transferring. After
transmission, the LCD will return to P1.0.

Note..

The meter can store up to 99 records for each parameter.
If you want to transmit data for a different parameter, press
▲ to select your parameter before entering setup.

P2.0 Clear Memory

1. Press MODE to select the parameter you want cleared
before entering Setup Mode.

2. Press SET for 2 seconds to enter setup. Press ▲ to
select memory clear function.

3. The “CLR” icon appears on the middle display and
P2.0 illuminates in the lower display.

10

SETUP MODE

4. Press MN/MX/AV to enter P2.1. The default “NO” icon
flashes on the middle display and P2.1 appears in the
lower display.

5. Press ▲ to change the status from “NO” on
The display to “YES” and then press MN/MX/AV
again to confirm clearing of all memory. The LCD
display will return to P2.0 when memories are deleted.

CAUTION:

THE MEMORY CLEAR PROGRAM IS DESIGNED TO
CLEAR 99 MEMORIES AT ONE TIME. PLEASE
CONSIDER CAREFULLY IF YOU DECIDE TO CLEAR
THE MEMORY AS THIS OPERATION CANNOT BE
REVERSED.

11

SETUP MODE

P3.0 View Slope & Offset

1. Press MODE to select probe type as pH.

2. Press SET for 2 seconds to enter setup.

3. Press ▲ until the icon “ELE” appears in the middle
display and P3.0 appears in the lower display.

4. Press MN/MX/AV to enter P3.1, the LCD displays one of
four available slope values; P3.1, P3.2, P3.3, P3.4. If
the value is less than 75% or more than 115%, change
the probe immediately.

5. Press MN/MX/AV to enter P3.2, P3.3, and P3.4.

Note...

The solution range definition differs between NIST and
Custom buffers.

12

SETUP MODE

6. Press MN/MX/AV to enter P3.5 and view the offset val-
ue. The offset value is the mV value of pH 7 and the
default offset value is 0.0. The offset value will be
different after calibration. If the value is outside the
range of ± 60 mV, replace the probe.

P4.0 pH Calibration Buffer

This meter allows the selection of two different types of pH
buffers: NIST or CUSTOM. Selection of the proper buffer
type more accurately calibrates the probe to specific
requirements.

NIST buffer: (five settings)

pH 1.68, 4.01, 6.86, 9.18, 12.45

CUSTOM buffer: (five ranges)

pH 1.00-3.00, 3.50-5.50, 6.00-8.00, 8.50-10.50,

11.50-13.50

Select Buffer

1. Press SET for 2 seconds to enter setup.

2. Press ▲ to select pH buffer. “BUF” will appear on the
middle of the LCD and P4.0 will appear on the lower
portion.

13

SETUP MODE

3. Press MN/MX/AV to enter P4.1. The default “NIS”
(NIST) will flash on the LCD and P4.1 will appear on the
lower portion of the display. If you use NIST buffers,
press MN/MX/AV to confirm and the meter returns to
P4.0.

4. If your requirement is not for NIST buffers, press ▲ to
change the status to CUSTOM buffer.

5. Press MN/MX/AV to confirm and the meter will return to
P4.0.

P5.0 Ready Icon

This feature enables/disables the “READY” icon, which
indicates that the measured reading is stable.

1. Press SET for 2 seconds to enter setup.

2. Press ▲ to select “READY” on the display.

14

SETUP MODE

3. Press MN/MX/AV to enter P5.1. “YES” will flash on the
LCD display and P5.1 will appear on the lower display.

4. Press ▲ to switch between YES or NO.

5. Press MN/MX/AV to confirm.

6. Press ESC to return to Normal Mode.

P6.0 Temperature Units

To select either Celsius or Fahrenheit temperature scale:

1. Press SET for 2 seconds to enter setup.

2. Press ▲ to select “U” on the upper display. P6.0 is
displayed in the lower portion of display.

3. Press MN/MX/AV to enter P6.1. The last selected unit
“C” or “F” will appear on the LCD.

4. Press ▲ to select either display.

15

SETUP MODE

5. Press MN/MX/AV to save the selection.

6. Press ESC to return to Normal Mode.

P7.0 Real Time Clock Setting

This procedure adjusts the meter’s internal clock. An
internal battery powers the real time clock independent of
the power source running the meter.

1. Press SET for 2 seconds to enter setup.

2. Press ▲ to select “RTC” on the LCD display. P7.0
appears on the bottom of the display.

3. Press MN/MX/AV to enter P7.1. The year flashes in the
lower right corner of the LCD display. (The year is the
last two digits only; for example, 1999 would be 99).

Symbol: Y-M-D H:M:S
Definition: Yr.-Mo.-Day Hr.-Min.-Sec.
Range: 99-12-31 23-59-59

4. Press MN/MX/AV to step through the following “P’s.”
All are two digits.

P7.1 = Year P7.2 = Month P7.3 = Day
P7.4 = Hour P7.5 = Minute P7.6 = Seconds

5. Press ▲ and ▼ to adjust values up or down,
respectively.

16

SETUP MODE

6. Press ESC to return to P7.0 and Normal Mode.

P8.0 Reset

This procedure will reset the meter to factory default
settings. Memory locations are not reset after this
procedure.

1. Press SET for 2 seconds to enter setup.

2. Press ▲ to select the reset section of the meter.

3. “rSt” will appear on the LCD and P8.0 will appear
directly below.

4. Press MN/MX/AV to enter P8.1.

5. Press ▲ to switch between “YES” or “NO.”

6. Press MN/MX/AV to confirm.

7. Press ESC to return to Normal Mode.

17

PH PROBE CALIBRATION

Calibrate routinely before use, if the readings seem erratic,
and whenever the batteries are replaced. For the highest
accuracy, we recommend a two point calibration. If only
calibrating at a single point, make certain that the buffer
value is close to the sample that will be measured and the
buffer temperature remains stable.

1. Press POWER to turn the meter on and press MODE to
select “pH” mode. “pH” appears on the LCD.

2. Select the calibration buffer type: NIST or CUSTOM
(see page 14).

Note…
pH 4 may be calibrated using either the NIST
(recommended option) or CUSTOM buffer. pH 7 and pH 10
require the CUSTOM buffer. (See SETUP MODE on page

14.)

3. Rinse the probe in de-ionized water or rinse solution.
DO NOT wipe the pH probe dry. Wiping the probe may
cause static and cause calibration and measurement
instability.

4. Select the pH buffer and pour enough solution to totally
immerse the probe tip into a clean container.

5. Dip the probe into the container, immersing the probe
tip.

6. Stir the probe gently to create a uniform sample.

7. Press CAL to enter calibration mode. “CA” will flash on
the LCD. The pH value appears on the main display and

2.00 appears on the secondary display (CUSTOM) or

4.00 appears on the secondary display (NIST).

18

PH PROBE CALIBRATION

8. When the measured pH value is stable and the Ready
function is enabled (Refer to P5.0 READY ICON page

15). “READY” will appear on the left side of the LCD.

Note...

If the pH value continues to display different values, check
the buffer or probe. (Refer to TROUBLESHOOTING page

32).

9. NIST buffer: Skip to step 10. CUSTOM buffer: Follow
instructions for your selected buffer solution:

pH 4

Press HLD/REC. 4.50 appears on the secondary
display. Use ▲ or ▼ to adjust to 4.00.

pH 7

Press HLD/REC. 4.50 appears on the secondary
display. Press HLD/REC again. If the secondary value
does not default to 7.00, use ▲ or ▼ to adjust to 7.00.

pH 10

Press HLD/REC. 4.50 appears on the secondary
display. Press HLD/REC again. 7.00 appears on the
secondary display. Press HLD/REC again. 9.50 appears
on the secondary display. Use ▲ or ▼ to adjust to

10.00.

10. Press MN/MX/AV to confirm. Press ESC to save and
return to Normal Mode.

11. Change the buffer solution and repeat previous steps to
achieve multiple point calibration. Clean the probe in
between each buffer.

19

MEASUREMENT PROCEDURES

1. The meter is powered by 4 AAA batteries. Install
batteries or connect an AC adapter to the power jack on
the side of the meter.

2. Connect a sensor probe to the BNC connector on top of
the meter.

3. For the pH probe with temperature sensor, also connect
the plug into the jack to the right of the BNC connector.

BNC Temp. Sensor

4. Connect the USB cable to the meter and computer to
upload measurements for computer analysis.

Available measurement parameters of each probe:

PROBE pH mV

pH Probe Yes Yes

ORP Probe N/A Yes

IMPORTANT: The temperature of the measured liquid

must be stable.

pH Measurement

This meter is designed to take readings with automatic or
manual temperature compensation. Automatic temperature
compensation only occurs when a temperature sensor is

20

MEASUREMENT PROCEDURES

plugged into the meter. For manual temperature
compensation, the default setting is 25°C. It is also
possible to manually adjust the temperature to match your
working conditions, as measured by a separate
thermometer. To take measurements:

1. Remove the pH probe soaker bottle by rotating the
bottle and cap and slide the bottle and cap off the probe.
Rinse the probe tip with de-ionized or distilled water
before use. If the probe tip is dehydrated, soak it for 30
minutes in a KCl solution. DO NOT wipe the pH probe
dry. Wiping the probe may cause static and cause
calibration and measurement instability.

2. Press POWER to turn on. ATC appears to indicate that
the automatic temperature compensation probe is
connected and working properly.

3. Immerse the probe tip (glass bulb) completely into the
sample.

4. Stir the probe gently to create a uniform sample.

5. Wait until the reading has stabilized. If selected in set­up, “READY” illuminates to indicate a stable reading.

mV Measurement (± 499mV)

mV measurement range is from -499 mV to +499 mV with a
pH probe.

21

MEASUREMENT PROCEDURES

1. Follow Step 1 in the pH Measurement section to clean
and soak the probe.

2. Press POWER to turn on. Press MODE to select mV
mode.

3. Follow Steps 3-5 in the pH Measurement section to
obtain a reading.

4. To switch between mV and pH, press MODE.

ORP (mV) Measurement (± 1999mV)

ORP (Oxidation Reduction Potential) measurement range is

-1999 mV to +1999 mV. Use an ORP probe for

measurement:

1. Follow Step 1 in the pH Measurement section to clean
and soak the probe.

2. Press POWER to turn on. Press MODE to select mV
measurement.

3. Follow Steps 3-5 in the pH Measurement section to
obtain a reading.

22

MEASUREMENT PROCEDURES

Note...

There is no need to take temperature compensation into
consideration when using an ORP probe to measure.

Temperature Compensation

Automatic with pH probe (ATC):

Plug the temperature sensor connector into the jack on top
of the meter next to the larger BNC connector.

Manual with pH probe (MTC):

1. To set the temperature, press MN/MX/AV for more than
2 seconds, “CA” will flash on the LCD Display.

2. Press the ▲ or ▼ to change the temperature value and
then press MN/MX/AV to save and return to Normal
Mode.

Hold Function

This function allows you to freeze the current reading on the
display in Normal Mode.

1. Press HLD in Normal Mode. “HLD” appears on the
display.

2. Press HLD and the meter returns to Normal Mode.

23

MEASUREMENT PROCEDURES

Record Memory

The meter can store up to 99 records each of pH, mV, and
ORP (mV) readings.

1. In any measurement or Hold Mode, press MEM to save
the data.

2. The memory number and measured value will flash and
then return to Normal Mode.

Note…

Further data can not be saved once the memory is full. See
Clear Memory on page 11 to create additional space.

Recall Memory

This function recalls readings stored in the memory.

1. Press REC for more than 2 seconds to enter Recall
Mode. “REC” will flash on the LCD display.

2. Press ▲ to select next memory content. Press ▼ to
select previous memory.

3. To exit memory recall, press REC for more than 2 se­conds.

24

MEASUREMENT PROCEDURES

Recall Maximum & Minimum

This function reviews a maximum and minimum value
for all the data points stored in memory.

1. Press REC for 2 seconds to enter Recall Mode. “REC”
will flash on the LCD.

2. Press MN/MX/AV to view the minimum value of the
memory. Press MN/MX/AV again to view the maximum
value.

3. To exit memory recall, press REC for more than 2 se­conds.

Backlight

1. Press any button to activate the backlight function. The
backlight turns off automatically after 10 seconds of
inactivity.

Auto Power Off

The meter turns off automatically after 20 minutes of
inactivity. To override the function, hold down POWER and

HLD simultaneously for 2 seconds when turning the meter
on until “n” appears.

Note…

The auto power off function will be disabled while in
calibration mode.

25

MAINTENANCE

pH Probe

It is important to keep the pH probe wet when the meter is
not in use. The probe is well protected by a plastic bottle
containing solution. To use or store the probe:

1. Rotate the bottle to remove from the probe. Pull down
the cover and remove it from the probe.

2. After use, put cover back on the probe and plug the
probe into the bottle. Rotate the bottle to fit into the cov­er tightly.

26

MAINTENANCE

The following actions will keep the probe in good working
condition.

 Always keep the pH glass bulb wet by using the plastic

bottle to protect and store the probe. You can also store
in a KCl solution. Never use distilled or de-ionized water
for storage.

 Always rinse pH probe in de-ionized water before using.

 Never touch or rub the glass bulb tip.

 This probe is designed with a fiber junction. To prolong

the life of the probe, it is recommended to clean the
probe monthly by immersing in a cleaning solution for a
minimum of 30 minutes. After cleaning, rinse with tap
water and recalibrate with the meter.

 To further prolong the life of the probe, extend the fiber

junction and remove the dirt portion. The extendable
fiber reference junction is used to eliminate the reading
errors from a clogged junction.

27

MAINTENANCE

To expose the new unused fiber portion:

1. Use tweezers to pull out the fiber junction and expose
the new unused portion.

2. Cut the clogged fiber and expose the new portion.

ORP Probe

Before using, remove the soaking bottle (see pH Probe
section), soak the probe in distilled water, and rinse.

Gently dry the sensing element.

Probe Testing

1. Connect the ORP probe to the meter via the BNC
connector.

28

MAINTENANCE

2. Put the probe in a buffer solution of pH 7.00 with sat­urated quinhydrone.

3. Stir; mV reading (E1) should be 86 ±15mV.

4. Rinse the probe with distilled water between each use.
Keep the ORP probe wet. If not in use for long periods,
it should be rinsed and stored in the soaker bottle filled
with the saturated KCL solution.

ORP Probe Cleaning

A contaminated sensing element can result in a slow
response and/or inaccurate reading.

 If contamination is a mineral matter, put the sensing

element in a HCl solution 0.1 N for 10 minutes. Then
rinse in distilled water.

 If contamination is oil or grease, clean with a mild

detergent. Then rinse with distilled water.

Upon completion of either cleaning method, immerse the
probe in a saturated buffer solution with pH 4.01 for 15
minutes and rinse with distilled water.

Probe Performance

The sensing element of an ORP probe is made of a high
purity metal. Slow response time and inaccurate readings
may be caused by the sensing element previously having
been soaked in a solution for a long period of time. An ox­idation reduction coating may have formed on the surface
of the sensing element. Resolve by cleaning the element.

29

MAINTENANCE

When measuring solutions with a low concentration of ox­idation reduction matter and slow ion exchange rate, a slow
response time and inaccurate readings may occur. Under
these conditions, it may take 8-24 hours to obtain an accu­rate reading.

30

TROUBLESHOOTING

Meter does not turn on:

1. Press POWER for more than 2 seconds.

2. Check connections of the power adapter or batteries.

Unstable readings:

1. Stir the solution to make a uniform sample and make
sure the sensor is completely immersed in the solution.
The measurement must be done while probe is in the
container/solution.

2. Move to new location for measurement, RF emissions
from unknown source may disrupt readings.

Readings not changing:

1. Check to see if meter is in “HOLD” mode.

2. Release “HOLD” function.

3. Check to see if meter is in “MTC,” if so, input
temperature value.

Slow response:

1. Clean and re-calibrate the probe. Replace with a new
probe.

Wrong real time:

Incorrect real time display will not affect the measurements.
Internal batteries (separate from internal batteries that pow­er the meter) need replacing. Contact distributor for
replacement documentation.

31

ERROR CODES

E02 Reading is under the lower limit

E03 Reading is over the upper limit

E04 Preceded by another error

E12 Factory calibration data error; Reset meter
(see page 18).

E13 Slope or Offset value of pH probe is

out of range

E31 Measuring circuit failure; Restart meter

E32 Memory Integrated Circuit failure

32

PC CONNECTION

The meter can interface with a personal computer to
capture on-line or stored data.

Connection procedures:

1. Plug the USB cable into the cable jack on the side of the
meter.

2. Plug D-sub 9 pin type connector into a computer Serial
COM port. COM ports 1-8 can be used.

3. Insert CD-Rom in computer and follow the procedure in
the operation manual located on the CD.

Protocol information

USB protocol settings: 9600 bps, 8 data bits, no parity.
(Transmits ASCII code every second.)

Normal Data:

pxx.xxpH: mxx.xxmV:Txxx.xC(F)@ 2007-04-18

18:48:48LRCCRLF

Protocol Information

Errors:

ExxNul: ExxNul: ExxNul @ 2007-04-18

18:48:48LRCCRLF

Description:

$pH:mV:TpH LRC CRLF

Note...
The first value is pH reading in pH, the second value is

33

PC CONNECTION

Voltage reading in mV, the third value is Temperature of pH
probe in C/F, and “x” is a numerical value.

Format in Memory Transmit pH Mode

Normal Data:

Pxx.xxpH: Txxx.xC(F)#xx@2007-04-18

18:48:48LRCCRLF

Errors:

ExxNul: ExxNul: #xx @2007-04-18

18:48:48LRCCRLF

Description:

$pH: Temp LRCCRLF

Protocol information

Format in Memory Transmit mV mode

Normal Data:

Mxx.xxmV: Txxx.xC(F) #xx @2007-04-18

18:48:48LRCCRLF

Errors:

ExxNul: ExxNul #xx @2007-04-18

18:48:48LRCCRLF

Description:

$mV:Temp LRC CRLF

34

APPENDIX

TEMPERATURE EFFECT ON NIST pH BUFFERS

35

OPTIONAL ACCESSORIES

840016 pH Probe (non-ATC)

840027 AC Adapter

840049 Spear Tip pH Probe (non-ATC)

840052 Data Acquisition Software

840054 USB Cable

840089 Rubber Holster

840090 Water Resistant Instrument Pouch

840092 Bench-Top Tripod

840093 Field Tripod

850059P Replacement ATC pH Probe

850088 ORP Probe

860008 pH4, 3 bottles, 40mL each

860009 pH7, 3 bottles, 40mL each

860010 pH10, 3 bottles, 40mL each

860011 De-ionized Water, 3 bottles, 40mL each

36

SPECIFICATIONS

Unit of Range Resolution Accuracy

pH

mV

ORP

Temperature

ºF

Temperature

ºC

Operation temperature: 5°C to 40°C

0 ~ 14 0.01 ± 0.02 pH

-499 ~ 499 ± 0.1 mV
(-199.9 ~

199.9)

otherwise ±

1mV

-199.9

~199.9

23 ~

176ºF

-5 ~

80ºC

± 0.1 mV
(-199.9 ~

199.9)

otherwise ±

1mV

0.1º ± 2 ºF

0.1º ± 1 ºC

± 0.2 mV

-199.9 ~ 199.9
otherwise ± 2

mV

± 0.2 mV

-199.9 ~ 199.9
otherwise ± 2

mV

Operation RH%: Up to 95% w/o condensation

Storage Temperature: -20°C to +60°C

Storage RH%: Up to 95% w/o condensation

Size (mm) 175 L x 70 W x 33 D

Weight (meter only): 150g

pH/mV default preferences (display “pH” )

37

SPECIFICATIONS

Program Preference Default Displayed

P1.0 Memory No default “tr”
(Transmitting)

P1.1 Memory Sent No default “out”
by USB

P2.0 Memory Clear “no” “CLr”

P2.1 CLR Confirm “no” “no” / “yes”

P3.0 Electrode “ELE”

P3.1-3.4 Slope 100.0% Slope value

P3.5 Offset 0.0mV Offset value

P4.0 Buffer Solution “buF”

P4.1 Select Buffer “NIST” “nist”/“cust”

P6.0 Ready Function “rdy”

P6.1 Enable or Disable “yes” “no” / “yes”

P7.0 Temp Unit “U”

P7.1 Select C or F “C” “C” or “F”

P8.0 Real Time Clock “rtc”

P8.1-8.6 Setting YMD, HMS “rtc”

P9.0 Reset “no” “rst”

P9.1 Reset Confirm “no” “no” / “yes”

38

WARRANTY

Sper Scientific warrants this product against defects in
materials and workmanship for a period of five (5) years
from the date of purchase, and agrees to repair or replace
any defective unit without charge. If your model has since
been discontinued, an equivalent Sper Scientific product
will be substituted if available. This warranty does not
cover probes, batteries, battery leakage, or damage
resulting from accident, tampering, misuse, or abuse of the
product. Opening the meter to expose its electronics will
void the warranty. To obtain warranty service, ship the unit
postage prepaid to:

SPER SCIENTIFIC LTD

7720 E Redfield Rd, Suite 7

Scottsdale, AZ 85260

The defective unit must be accompanied by a description of
the problem and your return address. Register your product
online at www.sperscientific.com, or return your warranty
card within 10 days of purchase.

Revised 7/29/2011

39

Advanced pH/ORP Meter 850055

Copyright ©2009 by Sper Scientific

ALL RIGHTS RESERVED

Printed in the USA

The contents of this manual may not be reproduced or
transmitted in any form or by any means electronic,
mechanical, or other means that do not yet exist or
may be developed, including photocopying, recording,
or any information storage and retrieval system without
the express permission from Sper Scientific.

7720 E. Redfield Rd. Suite #7, Scottsdale, AZ 85260

Tel: [phone] Fax: [phone]

Web: www.sperscientific.com

40