Pyxis Porta-Check EZ-100 User manual

User Manual
EZ-100
Porta-Check™
pH Meter

EZ-100 Porta-Check Manual
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 Wristband Installation......................................................- 7 -
4.2.2 Electrode Connection ......................................................- 8 -
5 Instrument Operation.........................................................................- 10 -
5.1 Screen Icons........................................................................- 10 -
5.2 Key Functions .....................................................................- 13 -
5.3 Instrument Settings..............................................................- 15 -
5.3.1 Switch On/Off ..............................................................- 15 -
5.3.2 Function settings...........................................................- 16 -
5.4 Calibration..........................................................................- 21 -
5.4.1 Prepare electrodes .........................................................- 21 -
5.4.2 pH electrode Calibration................................................- 21 -
5. Measurement ........................................................................- 25 -
5.5.1 Measurement preparation...............................................- 25 -
5.5.2 Measurement ................................................................- 25 -
6 Maintenance and Troubleshooting ......................................................- 28 -
6.1 Maintenance .......................................................................- 28 -

II
6.2 Electrode usage and maintenance..........................................- 30 -
6.3 Troubleshooting ..................................................................- 31 -
7 Technical Support .............................................................................- 32 -
Accessories ..............................................................................- 32 -
8 Appendix..........................................................................................- 34 -
Appendix 1...............................................................................- 34 -
EZ-100 Porta-Check Manual

-1 -
1 Introduction
1.1 Introduction
The EZ-100 Porta-Check is a portable pH meter is not only suitable for
sampling, measuring the pH value of aqueous solution and measuring
electrode potential (mV) value in laboratories of industrial and mining,
research institutes, but also especially suitable for pH measurement in field
and mobile environment
General Features
High resolution LCD display screen, 6.0 inches.
Powered by lithium batteries, no need to replace batteries frequently,
suitable for long-term use.
Multi-reading feature allows auto-read and continuous-read.
The instrument displays electrode slope and data stability mark.
Support electrode calibration function, up to 2-point calibration.
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 200 sets measurement results storage.
IP65 waterproof. The meter is fit to fields measurements and outdoor
measurements.
EZ-100 Porta-Check Manual

-2 -
1.2 Technical Specification
Table 1-2 Instrument Specifications
Model
EZ-100
pH level
0.01 pH
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)
Use environment
Ambient temperature: (0～40) °C
Relative humidity: not more than 85%
Dimensions(L×B×H), Weight(kg)
80mm ×225mm×35mm, About 0.4kg
Power supply
Rechargeable lithium battery, power adapter
(Input AC 100~240V, Output DC 5V)
EZ-100 Porta-Check Manual

-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
IP65
Reading
function
Default balance settings
●
Auto-lock reading
●
Reading Mode
auto-read and
continuous-read
Data
management
Storage
200 sets
View
●
Delete
●
pH/mV
measurement
PH electrode status/performance display
Electrode slope
Multi-point calibration
2
Automatic identification of standard
solutions
1 group standard
solution
Custom standard solution
Manual identification
of standard solutions
Automatic temperature compensation
●
Manual temperature compensation
(0.0～60.0)°C
Temperature
function
Temperature unit
° C
●Equipped
EZ-100 Porta-Check Manual

-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-100 Porta-Check Manual

-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-100 Porta-Check Manual

-6 -
4 Overview and Installation
4.1 Overview
Figure 4-1 Overview-Front View
Figure 4-2 Overview- Back View
1 Meter Body
2 Power Key
3 Function selection key
4 Display
5 Socket protective cap
6 Power sockets
7 Wristbands
8 Flip Tilting Stand
9 Electrode Holder
10 Electrode
EZ-100 Porta-Check Manual

-7 -
Figure 4-3 Electrodes and connectors
4.2 Instrument installation
4.2.1 Wristband Installation
1) Push the wrist strap switch at the wrist strap head to open the closed
round hole,
2) Snap the opened round hole card slot into the shaft of the
corresponding instrument housing and close the round hole.
3) The lower wristband card slot is also operated as above.
11 Temperature electrode connectors
12 pH electrode connectors
13 Electrode protection cap
14 pH electrodes
EZ-100 Porta-Check Manual

-8 -
Figure 4-4 Wristband Installation
4.2.2 Electrode Connection
1) Insert the electrode holder into the T-shaped port corresponding to
the meter body;
2) Insert the pH electrode into the electrode holder and hold it firmly;
3) Insert the temperature electrode connector of the measuring electrode
into the corresponding place on the meter;
4) Insert the pH electrode connector of the measuring electrode into the
corresponding place on the meter.
EZ-100 Porta-Check Manual

-9 -
Figure 4-5 Electrode connection
EZ-100 Porta-Check Manual

-10 -
5 Instrument Operation
5.1 Screen Icons
The meter uses segment LCD as the display, and the overall design is as
follows: The upper shows the status prompt area; the middle is the
measurement result area; the lower right is the current percent slope, and the
bottom is the main function area, including measurement function, calibration
function, setting function and viewing function.
Fig. 5-1 Screen icons explanation
EZ-100 Porta-Check Manual

-11 -
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
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
7
Delete measurement result
mark
8
Low power
Display when battery is low
9
Charging
10
mV
mV result unit
Unit: mV
11
pH
pH result unit
Unit: pH
12
Sec
Time unit
Unit: Sec
13
° C
Temperature
Unit: °C
14
MTC
Manual temperature
compensation
Represented by character string
MTC
15
ATC
Automatictemperature
compensation
Represented by character string
ATC
EZ-100 Porta-Check Manual

-12 -
No.
Symbol
Explanation
Note
16
%PTS
Percentage slope value
Represented by character
string %PTS
17
No.
Serial number
Display when viewing data
18
Measurement
19
Calibration
20
Setting
21
View the result
EZ-100 Porta-Check Manual

-13 -
5.2 Key Functions
Figure 5-2 Instrument keys
EZ-100 Porta-Check Manual

-14 -
Table 5-2 Key Function Explanation
No.
Key
Explanation
Note
1
Power key
Press to switch on the instrument.
Press and hold for more than 3 seconds to
switch off.
Can be used as a backlight power key after
switching on.
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
Setup
Set temperature.
View stored results.
Switch reading mode.
Set automatic shutdown time.
4
Save/Up
Store measurement results.
The value decreases when setting the
function.
Move when viewing functions.
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.
EZ-100 Porta-Check Manual

-15 -
5.3 Instrument Settings
5.3.1 Switch On/Off
Table 5-3 Characters displayed on the power operation interface
No.
Character display
Explanation
1
U5
Switch On, Software Version
2
OFF
Switch Off
Press to start. The meter performs self-test, and then enters the
measurement state. If it cannot be turned on, the built-in lithium battery may be
insufficient. Please use the default power charger to connect and charge it, and
wait 15 minutes before turning it on. After use, the user can press and
hold the key for more than 3 seconds to switch off.
EZ-100 Porta-Check Manual

-16 -
5.3.2 Function settings
Fig. 5-3 Setting function display
【TIPS】

Please use the default power charger for charging,
so as not to damage the instrument and bring you
unnecessary losses

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.
The lithium battery of the meter should not be
charged continuously for a long time. It can be fully
charged in about 4 hours in the switch-off state, that
is, the charging cable can be removed after the
indicator light is always on. It is strictly forbidden to
continuously charge for 24 hours.
EZ-100 Porta-Check Manual

-17 -
The meter supports a variety of functions, including setting reading mode,
the manual temperature value, viewing 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 "Cal/Enter" key to select, display as shown.
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
readingandauto 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-100 Porta-Check Manual