Pyxis PermaCheck EZ-101 User manual

User Manual
EZ-101
Perma-Check
pH Meter

EZ-101 pH Meter Instruction
I
Contents
1 Introduction ........................................................................................- 1 -
1.1 Introduction..................................................................................- 1 -
1.2 Technical Specification .................................................................- 2 -
1.3 Function Introduction....................................................................- 3 -
2 Safety Notices.....................................................................................- 4 -
3 Terms Explanation ..............................................................................- 5 -
4 Overview and Installation ....................................................................- 6 -
4.1 Overview .....................................................................................- 6 -
4.2 Instrument installation...................................................................- 7 -
4.2.1 Multifunctional electrode holder mounting...............................- 7 -
4.2.2 Electrode installation ..............................................................- 8 -
5 Instrument Operation...........................................................................- 9 -
5.1 Screen Icons.................................................................................- 9 -
5.2 Key Functions ............................................................................ - 11 -
5.3 Instrument Settings .....................................................................- 12 -
5.3.1 Switch On/Off......................................................................- 12 -
5.3.2 Instrument Settings...............................................................- 13 -
5.4 Calibration .................................................................................- 17 -
5.4.1 Prepare electrodes ................................................................- 17 -
5.4.2 pH electrode Calibration .......................................................- 17 -
5.5 Measurement..............................................................................- 21 -
5.5.1Measurement preparation.......................................................- 21 -
5.5.2 Measurement .......................................................................- 21 -
6 Maintenance and Troubleshooting ......................................................- 24 -
6.1 Maintenance...............................................................................- 24 -
6.2 Electrode usage and maintenance.................................................- 25 -
6.3 Troubleshooting..........................................................................- 27 -
7 Technical Support .............................................................................- 28 -

EZ-101 pH Meter Instruction
II
Accessories......................................................................................- 28 -
8 Appendix..........................................................................................- 30 -
Appendix 1......................................................................................- 30 -

EZ-101 pH Meter Instruction
-1 -
1 Introduction
1.1 Introduction
PH200E pH meter is a laboratory pH measuring instrument, which can be
widely used in universities, environmental protection, medicine, food, health,
geological prospecting, metallurgy, marine exploration and other fields,
common acid rain detection, industrial wastewater, surface water, drinking
Water, beverages, daily chemical products, textiles, etc. All these fields require
pH measurement.
General Features
High resolution LCD display screen, 6.0 inches.
The instrument displays electrode slope and data stability mark.
Multi-reading feature allows auto-read and continuous-read.
Support electrode calibration function, up to 3-point calibration.
Support automatic calibration function, automatic identification of
three pH standard buffer solutions: 4.01pH, 7.00pH and 10.01pH.
Support manual calibration function, custom standard solution.
Automatic/Manual temperature compensation ensures accurate
results.
Support data storage, deletion and review, 50 sets storage of
measurement results.
With power failure protection function, support to factory settings.
IP54 protection.

EZ-101 pH Meter Instruction
-2 -
1.2 Technical Specification
Table 1-1 Meter specifications
Model
EZ-101
pH level
0.01pH
mV
Range
(-1999～1999)mV
Minimum resolution
1mV
Electronic unit indication error
±0.1%(FS)
Electronic unit repeatability
1mV
Electronic unit input current
≤1×10-12Ａ
Electronic unit input impedance
≥1×1012Ω
pH
Range
(-2.00～18.00)pH
Minimum resolution
0.01pH
Electronic unit indication error
±0.01pH
Electronic unit repeatability
0.005pH
Instrument indication error
±0.02pH
Instrument repeatability
0.01pH
Temperature
Range
(-5.0～110.0)°C
Minimum resolution
0.1 °C
Electronic unit indication error
±0.2 °C
Instrument indication error
±0.4°C(0.0° C ～60.0°C),
±1.0 °C(Other range)
Work environment
Ambient temperature: (0～40) °C
Relative humidity: not more than 85%
Dimensions(L×B×H), Weight(kg)
242mm×195mm×68mm, About 0.9kg
Power supply
AC Adapter,100-240V AC input,
DC9V output

EZ-101 pH Meter Instruction
-3 -
1.3 Function Introduction
Table 1-2 Main functions
Function
Explanation
Basic function
Backlight Power
●
Reset settings
●
Power failure protection
●
Anti-interference automatic recovery
●
Automatic shutdown
●
Protection
IP54
Reading
function
Default balance settings
●
Auto-lock reading
●
Reading Mode
auto-read and continuous-read
Data
management
Data storage
50 Sets
View
●
Delete
●
pH/mV
Measurement
PH electrode status/performance
display
Electrode slope
Multi-point calibration
3
Automatic identification of standard
solutions
1 group standard solution
Custom standard solution
Manual identification of
standard solutions
Automatic temperature compensation
●
Manual temperature compensation
(0° C ～60°C)
Temperature
function
Temperature unit
° C
●Equipped

EZ-101 pH Meter Instruction
-4 -
2 Safety Notices
Please read the entire contents of this manual carefully before use, and
please keep this manual properly. The user MUST use the instrument
following this manual to avoid damage to the user and equipment.
Before using the meter, READ the following notes:
DO NOT DISASSEMBLE the device for inspection or repair.
To prevent electric shock or damage to the device, DO NOT place
cables and connectors in any liquid, wet or corrosive environment.
Please use the defaulted power adapter.
DO NOT use it if the power cord is damaged (the wire is exposed or
broken).
DO NOT use in flammable and explosive environments.
DO NOT use if the user finds any abnormalities such as damage or
deformation of the device.
The following identifiers will be used in this manual.
【TIPS】
Tips help to use the meter.

EZ-101 pH Meter Instruction
-5 -
3 Terms Explanation
pH Slope: The amount of potential change generated by each 1 pH
change, expressed in mV/pH or by 100% Theoretical Slope (PTS).
pH = - log[H], where [H] means molar concentration (mol/L) of H
ions.
E0 of pH: Also known as "zero potential", usually refers to the
potential value at pH 7;
One-point calibration: Calibration with a standard solution.
Two-point calibration: Calibration with two standard solutions.
Multi-point calibration: Calibration with more than two standard
solutions.

EZ-101 pH Meter Instruction
-6 -
4 Overview and Installation
4.1 Overview
Figure 4-1 Overview-Front View
Figure 4-2 Overview- Back View
1 Meter Body
2 Display
3 Power Key
4 Function selection key
5 Multifunctional electrode holder
6 Measurement electrodes
7 Measurement pH electrode plug
8 Measurement temperature
electrode plug
9 Temperature electrode
connectors
10 Ground terminal

EZ-101 pH Meter Instruction
-7 -
Figure 4-3 Electrodes and connectors
4.2 Instrument installation
4.2.1 Multifunctional electrode holder mounting
1) Pull out the electrode holder fixing plate on the right side of the
meter.
2) Insert the multifunctional electrode holder into the fixed shaft of the
electrode holder fixed extractor plate.
3) Tighten the set screw at the bottom of the electrode holder.
Figure 4-4 Installation of the multifunctional electrode holder
11 Measurement electrode connectors
12 Reference electrode connectors
13 Meter debug port
14 DC9V power socket
15 Electrode protection cap
16 pH electrodes
17 Q9 short-circuit plug

EZ-101 pH Meter Instruction
-8 -
4.2.2 Electrode installation
1) Mount the pH electrode on the electrode holder,
2) Find the interface of temperature electrode and measurement
electrode on the back of pH meter, unplug Q9 short circuit plug.
3) Insert pH electrode’s temperature electrode and pH electrode plug
into the corresponding electrode connector respectively.

EZ-101 pH Meter Instruction
-9 -
5 Instrument Operation
5.1 Screen Icons
The meter uses segment LCD as the display, and the overall design is as
follows: the left is the main functional area, including the measurement
function, calibration function, setting function, and viewing function; the upper
part displays the status prompt area; the middle is the measurement result area,
including pH value, temperature value; The lower right corner is the current
percent slope.
Fig. 5-1 Screen icons explanation
Table 5-1 Symbol Explanation
No.
Symbol
Explanation
Note
1
Auto-read
Display during balance
measurement
2
continuous-read
Display during continuous
measurement
3
Reading state
All four segments are lit up in
stable state

EZ-101 pH Meter Instruction
-10 -
No.
Symbol
Explanation
Note
4
Reading is locked
In the auto-read mode, when the
reading is stable, end the
measurement, the result has
locked.
5
Confirm the option
Display when user confirmation
is required
6
Automatic shutdown
Display when automatic
shutdown is enabled
7
Delete measurement result
8
mV
mV result unit
Unit: mV
9
pH
pH result unit
Unit: pH
10
Sec
Time unit
Unit:Sec
11
° C
Temperature
Unit: °C
12
ATC
Automatic temperature
compensation
Represented by character string
ATC
13
MTC
Manual temperature
compensation
Represented by character string
MTC
14
No.
Serial number
Represented by character string
No.
15
%PTS
Percentage slope value
Represented by character
string %PTS
16
Measurement
17
Calibration
18
Setting
19
View the result

EZ-101 pH Meter Instruction
- 11 -
5.2 Key Functions
Figure 5-2 Instrument keys
The meter adopts tact power button, the instrument has 7 keys in total, the
specific functions are as follows:
Table 5-2 Key Function Explanation
No.
Key
Explanation
Note
1
Power key
Switch on the meter by press and
release the key.
Switch off the meter by press and
hold the key for more than 3 seconds
and release.
Backlight adjustment key when
Switch on the meter.

EZ-101 pH Meter Instruction
-12 -
No.
Key
Explanation
Note
2
mV/pH/Up
Switch mV and pH display in
measurement state.
The value increases when the
function is set.
Move while viewing functions.
3
Save/Up
Store measurement results.
The value decreases when setting the
function.
Move when viewing functions.
4
Setting
Enter the setting function in the
measurement state.
Set manual temperature in calibration
state.
5
Measurement/Delete
Repeat the next measurement during
balance measurement.
When viewing the results, delete the
measurement result.
6
Calibration/Enter
Enter the calibration function during
measurement.
Confirm some function.
7
Cancel
Give up some function.
5.3 Instrument Settings
5.3.1 Switch On/Off
After installing the multi-function electrode holder and pH electrode,
connect the power supply, and press to start. The meter performs self-test,
and then enters the measurement state. After use, the user can press and

EZ-101 pH Meter Instruction
-13 -
hold the key for more than 3 seconds to switch off.
Table 5-3 Characters displayed on the power operation interface
No.
Character display
Explanation
1
U3E
Switch On, Software Version
2
OFF
Switch Off
5.3.2 Instrument Settings
The meter supports a variety of functions, including setting the reading
mode, setting the temperature value, viewing the stored results, setting the
automatic switch-off time, factory reset, etc. The user presses the "Setting" key,
the meter will display the setting logo, SEL and serial number, the user presses
up and down key to adjust, press the enter key to select.
【TIPS】

Before switching on each time, please check the
electrode sockets on the back of the meter, and
make sure that they are connected with measuring
electrodes or short-circuit plugs, otherwise it may
damage the high-resistance components of the
meter and bring you unnecessary losses.

When the meter is not in use, the short-circuit plug
should also be connected to avoid damage to the
meter due to the open circuit of the meter input.

If the meter is not used for a long time, please
disconnect the power

The socket of the meter must be kept clean and dry,
and should not be in contact with acid, alkali or salt
solution.

EZ-101 pH Meter Instruction
-14 -
Fig. 5-3 Setting function display
Table 5-4 Set function list in the measurement status
No.
Explanation
Note
1
Reading Mode Settings
Flashing display
2
Temperature Settings
Flashing show °C
3
View the data
Flashing display
4
Automatic shutdown settings
Flashing display “APD”(Auto Power Down)
5
Reset settings
Flashing display “rSt” (Reset)and “dFt” (Default)
5.3.2.1 Reading Mode Settings
The meter provides two reading modes, including continuous reading and
auto reading.
Continuous reading: The instrument displays real-time measurement
results. User can end the measurement at any time and save the last
result.
Auto-reading: The measurement reached the balance, and the meter
locked the reading result. Balance condition is that the results
fluctuates within 0.6mV for 4 sec. In the auto-reading mode, press
the “Meas/Del” to test the next one sample.

EZ-101 pH Meter Instruction
-15 -
Figure 5-4 Two reading modes display
5.3.2.2 Temperature Settings
The meter supports the connection of temperature electrodes, which can
be automatically compensated. If the user does not connect the temperature
electrode, the user needs to use a thermometer to measure the temperature of
the solution. Press the "Setting" key to select the temperature setting function,
press the "Cal/Enter" key, and adjust the temperature to the specified
temperature value.
Figure 5-5 Setting temperature value display
【TIPS】
In the measurement state, long press the "Meas/Del" key
to switch the reading mode.

EZ-101 pH Meter Instruction
-16 -
5.3.2.3 View the data
The meter supports storage of measurement results, up to 50 sets are
allowed to be stored. In the measurement state, press the "Cal/Setting" key to
select the function of viewing stored results, the meter first displays the total
number of stored results, and then displays the latest stored data, as shown in
the figure, you can press the up and down key to view each stored result. In the
viewing state, press the "Cal/Setting" key to switch the display of pH and mV
value results.
Figure 5-6 Viewing the storing results
If the user wants to delete the measurement results, there are two deletion
methods: single deletion or all deletion, the user presses the up and down key
to select the deletion method, dELonE 1 means to delete a single data, dEL All
2 means to delete all data, after selecting, press the "Cal/Enter" key to delete
stored data.
【TIPS】

In the measurement state, long press the "Save/▼"
key to enter the function of viewing stored results.

When viewing no stored result, the interface
displays the character "nuLL", which means Null
Stored Result.

EZ-101 pH Meter Instruction
-17 -
5.3.2.4 Automatic shutdown settings
The meter provides auto shutdown function. When the meter is not using
and set the auto shutdown, the meter switches off automatically. There are six
options: off, 300 Sec, 600 Sec, 1200 Sec, 1800 Sec, and 3600 Sec.
5.3.2.5 Reset settings
When the meter is not working. Users can reset the meter from the
default’s backup. The default setting includes the electrode slope as 100%, the
temperature as 25.0°C, continuous reading mode, automatic shutdown as close
etc. All data will be deleted after resetting.
5.4 Calibration
5.4.1 Prepare electrodes
Before using the pH electrode, please pay attention to the following items:
Pull out the electrode protection cap at the bottom end of the pH
electrode, and pull down the rubber sleeve at the upper end of the
electrode to expose the small hole at the upper end.
Clean the electrodes with distilled water.
For details on the use and storage of the pH electrode, please refer to
the electrode instruction manual.
5.4.2 pH electrode Calibration
The pH electrode has a certain drift in different use environments or when
it has not been used for a long time, resulting in different electrode slopes and
zero points. It needs to be re-calibrated with a standard buffer solution.
If the user needs to perform multi-point calibration, multiple standard