Apera Instruments EC950 Manuel utilisateur

EC950 Benchtop Conductivity Meter

Instruction Manual

PH950 Benchtop pH Meter

EC950 Benchtop Cond. Meter

PC950 Benchtop pH/Cond. Meter

APERA INSTRUMENTS (Europe) GmbH

www.aperainst.de

Table of Contents 
1. Introduction................................................................................................................................... - 1 -
 Measurement parameter....................................................................................................- 1 -
 Basic features.................................................................................................................... - 1 -
 pH measurement features .................................................................................................- 1 -
 Conductivity measurement features...................................................................................- 1 -
2. Meter Kits ..................................................................................................................................... - 2 -
3. Specifications ...............................................................................................................................- 3 -
 Technical parameters.........................................................................................................- 3 -
 Other technical parameters................................................................................................ - 3 -
4. Instrument Description..................................................................................................................- 4 -
 LCD display ....................................................................................................................... - 4 -
 Keypad functions ............................................................................................................... - 5 -
 Meter sockets .................................................................................................................... - 6 -
 Display mode.....................................................................................................................- 7 -
 Data storage, recall and delete ..........................................................................................- 7 -
 Manuals adjust temperature...............................................................................................- 9 -
 Install meter with multi-function test bench......................................................................... - 9 -
 Installation of flexible electrode holder ............................................................................... - 9 -
 Multi-function Test Bench...................................................................................................- 9 -
5. pH measurement........................................................................................................................ - 10 - 
 Default Electrodes Information......................................................................................... - 10 - 
 pH calibration related information .................................................................................... - 12 - 
 pH meter calibration (take three-point calibration as an example).................................... - 13 - 
 Custom-defined calibration (take 2.00pH and 7.30pH calibration solution as example).... - 15 - 
 Self-diagnostic Information............................................................................................... - 16 - 
 Solution measurement..................................................................................................... - 16 - 
6. mV measurement ....................................................................................................................... - 17 - 
 ORP measurement .......................................................................................................... - 17 - 
 Notes for ORP measurement........................................................................................... - 18 - 
 Ion potential measurement............................................................................................... - 18 - 
7. Conductivity Measurement ......................................................................................................... - 18 - 
 Conductivity probe information......................................................................................... - 18 - 
 Conductivity calibration related information...................................................................... - 19 - 
 Conductivity meter calibration (take 1413μS/cm calibration as an example) .................... - 20 - 
 Custom-defined calibration (take 10μS/cm standard solution as an example).................. - 21 - 
 Self-diagnostic information............................................................................................... - 21 - 
 Solution measurement..................................................................................................... - 22 - 
 Conductivity probe maintenance...................................................................................... - 23 - 
8. Parameter setting ....................................................................................................................... - 24 - 
 Main menu and submenu ................................................................................................ - 24 - 
 Operation......................................................................................................................... - 24 - 
 Content of parameter setting............................................................................................ - 25 - 
9. Stirrer ......................................................................................................................................... - 25 - 

 Operation......................................................................................................................... - 25 - 
 Specification .................................................................................................................... - 26 - 
 Notes ............................................................................................................................... - 26 - 
10. USB communication ................................................................................................................... - 26 - 
 Install Software ................................................................................................................ - 26 - 
 Software Interface............................................................................................................ - 27 - 
 Operation Keys of PC-Link............................................................................................... - 27 - 
11. Recommended pH Electrodes for Specific Applications.............................................................. - 28 - 
12. Recommended Conductivity Electrodes for Specific Applications ............................................... - 28 - 
13. Warranty..................................................................................................................................... - 29 - 
 
 Notes 
•When the meter is connected to PC, do not pull out the USB cable until the meter is 
turned off. Otherwise, a system crash could occur. To fix the crash, pull out the power 
cord, put it back in, and reboot the meter. 
•Please do NOT pull out the power cord when the meter is turned on.

- 1 -

1. INTRODUCTION

Thank you for purchasing our EC950 Benchtop Conductivity Meter.

Before using this meter, please read the operation manual carefully to help use and maintain it

correctly.

Measurement parameter

PH950

EC950

PC950

pH/mV

√

Cond./TDS/Salinity

√

Temperature

√

Electrode Stand

√

Basic features

⚫TFT color display, large size, ultra legible.

⚫Operating navigation expressed by graphic and text, more convenient to use.

⚫Multi language operating system (English, German, Spanish & Chinese)

⚫Smiling icon indicates the reading stability, including automatical lock on function.

⚫With built-in microprocessor chip, the meter has intelligent functions like automatic calibration,

automatic temperature compensation, function setting, self-diagnostic information, and storage.

⚫PC950 meter can measure and display pH & conductivity value at same time.

⚫Meter can configure with 606 multi function test bench which is combined by intelligent stirrer and

flexible electrode holder. It can hold solution bottles, electrodes, and stirrer beads. Stepless speed

regulation intelligent stirrer, it can also store rotating speed.

pH measurement features

⚫1~3 point automatic calibration with calibration instruction and automatic checking functions.

⚫Automatically recognize pH buffer solution. 3 series buffer solution selectable: USA series, NIST

series and CH, as well as custom-defined solution.

⚫Automatically display electrode slope.

Conductivity measurement features

⚫1~ 4 point automatic calibration with calibration instruction and automatic checking functions.

⚫Automatically recognize conductivity standard solution. 2 series standard solution selectable:

USA and CH, as well as custom-defined solution.

⚫With conductivity, TDS and salinity three measurement modes, can switch to display the results.

- 2 -

2. METER KITS

Description

Quantity

PH950

EC950

PC950

PH950 pH meter

√

EC950 conductivity meter

√

PC950 pH/conductivity meter

√

606 multi-function stirrers (includes flexible

electrode holder)

√

LabSen211 glass pH combination electrode

√

MP500 temperature probe

√

2401T-F conductivity probe（ATC, K=1.0）

√

pH buffer solution (4.00/7.00/10.01pH/50mL）

1 bottle each

√

Conductivity standard solution

(84μS/1413μS/12.85mS/50mL)

1 bottle each

√

Stirrer connection cable

√

PCLink-950 Flash Disk

√

USB communication cable

√

9V power adapter

√

Instruction manual

√

Quick manual

√

- 3 -

3. SPECIFICATIONS

Technical parameters

Technical Parameters

Model

Measuring Range

（0.00 ~ 14.00）pH

PH950

PC950

Resolution

0.1/0.01 pH

Accuracy

±0.01 pH ±1 digit

Temperature

Compensation Range

（0 ~ 100）°C（Auto. or Manual）

Calibration point

1~3 points

Measuring Range

±2000mV

Resolution

1mV

Accuracy

±0.1% FS ±1 digit

Cond.

Measuring Range

Conductivity：0~200 mS/cm, divided into five

ranges, automatically switch measuring range.

（0~19.99）μS/cm; （20.0~199.9）μS/cm;

（200~1999）μS/cm;（2.00~19.99）mS/cm;

（20.0~199.9）mS/cm

TDS： (0 ~ 100) g/L； Salinity：(0 ~ 100) ppt

EC950

PC950

Resolution

0.01/0.1/1μS/cm; 0.01/0.1 mS/cm

Accuracy

±1.0% FS ±1 digit

Temperature

Compensation Range

（0 ~ 50）°C（Auto. or Manual）

Cell constant

0.1 / 1 / 10 cm-1

Temp.

Measuring Range

0~100℃

PH950

EC950

PC950

Resolution

0.1°C

Accuracy

±0.5°C±1 digit

Other technical parameters

Data Storage

200 groups

Storage Content

Number, measuring value and temperature value

Power

DC9V/600mA

Dimension & Weight

Meter: (195×215×100) mm / 0.9kg

- 4 -

4. INSTRUMENT DESCRIPTION

LCD display

pH measurement interface

①pH measurement

②pH measuring value

③Temperature measuring value

④pH electrode slope

⑤Calibration solution indication icon

⑥Used data storage

⑦Temperature compensation icon,

MTC-manual temperature compensation

ATC-auto. temperature compensation

⑧Auto. lock on icon

⑨Stable reading icon

⑩Date and time

⑪Auto. data log

⑫Storage icon and number

⑬Stirrer icon

Conductivity measurement interface

①Conductivity measurement

②Conductivity measuring value and unit

③Temperature measuring value

④Conductivity parameter：

1.0 - conductivity cell constant

25.0°C - reference temperature

2.00% - temperature compensation

Coefficient

⑤Calibration solution indication icon

⑥Used data storage

⑦Temperature compensation icon,

MTC-manual temperature compensation

ATC-auto. temperature compensation

⑧Auto. Hold

⑨Stable reading icon

⑩Date and time

⑪Auto. data log

⑫Storage icon and number

⑬Stirrer icon

- 5 -

TDS measurement interface

①TDS measurement

②TDS factor 0.71

Salinity measurement interface

Salinity factor 0.5

pH/Cond. measurement interface

mV measurement interface

Keypad functions

Diagram-1

Keypad operation mode:

Short press—Press key and holding time < 2s, buzzer makes a “di” sound.

Long press—Press key and holding time > 2s, buzzer makes a “di” sould when pressing the

button, another “di” sound will ring after holding the key 2 seconds.

- 6 -

Chart -1 Keypad operations and functions

Keypad

Operations

Functions

Short press

⚫Power supply switch

Short press

Press key to select measurement mode:

⚫PH950: pH→mV

⚫EC950: Cond→TDS→Salt

⚫PC950: pH→mV→Cond→TDS→Salt→pH/Cond

Long press

⚫ Press key to enter temperature regulation mode

Long press

⚫In measurement mode, press key to enter in the calibration mode

Short press

⚫Cancel operation and return to measurement mode;

Short press

⚫In measurement mode: press key to enter parameter set-up main

menu.

⚫In calibration mode: press key to conduct calibration.

⚫In main menu mode: press key to enter in submenu.

⚫In submenu mode: press key to enter in parameter set-up.

⚫In parameter set-up mode: press key to confirm parameter.

⚫In temperature regulation mode: press key to confirm temperature

value.

Short press

⚫In measurement mode: press key to store measuring value,

press key to recall.

⚫In recall (RM) mode: press or key to turn page.

⚫In menu mode: press key to select items;

⚫In temperature regulation mode: press key to change temperature

value, hold key for fast changing.

Short press

⚫Stirrer switch

Long press

⚫Store stirrer speed

Short press

⚫Rotate according to the stored speed

Short press

⚫Press key to change rotating speed, hold key for fast changing.

Meter sockets

Model

Meter Sockets

PH950

① ② ③ ⑥ ⑦

EC950

④ ⑤ ⑥ ⑦

PC950

① ② ③ ④ ⑤ ⑥ ⑦

- 7 -

①BNC socket, connect with pH- or ORP combination electrode.

②RCA socket, connect with temperature sensor (for pH measurement).

①+②: BNC+RCA socket, connect with pH/ATC 3-in-1 combination electrode.

③Ф4 banana socket, connect with reference electrode.

④BNC socket, connect with conductivity cell.

⑤RCA socket, connect with temperature sensor (for conductivity measurement).

④+⑤: BNC+RCA socket, connect with Cond/ATC Elektroden.

⑥USB: Connect PC

⑦Ф2.5 power socket, Connect DC9V adaptor (inside “＋” outside “－”)

Display mode

Reading stable display mode

When the measuring value is stable, smiley icon

appears on LCD screen, see Diagram – 3. If the

smiley icon does not appear or flash, please do

not get readings or make calibration until the

measuring value is stable.

Auto. lock on display mode

In parameter set 3.1, set “Reading with HOLD” to “ON”, when icon stably display for more than

10 seconds, the meter will lock the value automatically and display HOLD icon. see Diagram – 4(b).

In HOLD mode, press key to cancel auto lock.

(a). (b).

Diagram-4

Data storage, recall and delete

Storage

(a) Manual data logger

Set “auto. timing” to “00:00:00”, Press key to store, icon 6 displays on the down right

corner of LCD screen which means it’s the 6th group data, see Diagram – 5(a); Each meter can store

200 groups data. For single parameter display mode, 1 serial number corresponds to 1 group

measuring vale. For dual parameter display mode (means pH + Cond. meter display mode), 1 serial

Diagram-3

(a)

(b)

2020-01-18

16:26:42

2020-01-18

16:26:42

2020-01-18

16:26:42

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