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pH/ORP paperless recorder

pH/ORPペーパーレス記録計 PET-R11

PET-R11 is a pH/ORP meter with a                       controlling and recording function.
It can record the process data of                 measured pH or ORP, and indicate                           the graphical display.

It is a pH/ORP indication and adjustment meter fit for on-site use 

that has pump control functions using voltage-applied contact signals.
Without the need to provide a control panel, cost reduction can be realized .
Advantages Applications Specifications
Outline drawing Relevant  


・The measured value of the pH meter/ORP is displayed in a graph on the LCD screen. The scale display width and sampling      intervals can be changed.In addition, it is also possible to re-display previous data by scrolling. The data displayed are: time and  pH meter/ORP value.

・By connecting a pulse flow meter, it is also possible to display the total accumulated value.

・The measured data are stored in the internal memory normally at intervals of 10 seconds(the intervals can be changed between  5 and 99 seconds).

・If the attached software is installed onto a personal computer, the data can be taken out onto Microsoft Excel.

 (Connection: RS-232C).The data that can be taken out are: Year, Month, Day, Hour, Minute, pH meter/ORP,

 Temperature, and Accumulated flow rate (continuous communication cannot be done).

・LCD with backlight that is easy to see both at daytime and at night.

・The waterproof construction that enables outdoor use is IP54 or equivalent.

・2 relay contact outputs are available which are used for controlling the chemical injection pump for pH meter/ORP control.
※Microsoft Excel is a registered trademark or trademark of Microsoft Corporation of USA in USA and other countries.


・pH neutralization or oxidation/reduction treatment of drainage in the chemical industry, etc.
・Incorporation of the apparatus of each process.
・pH measurement and control in hydroponic culture, etc.
・pH measurement and control of drainage from cleaning.
・pH measurement and control for drainage from experiments, etc.


Name pH meter/ORP recorder with control functions
Type PET-R11
Method of measurement

pH: glass electrode method
ORP: metal electrode method

Flow rate: pulse input (flow rate/pulse ratio selection)
Temperature: 6.8kΩ, 1kΩ, 500Ω (selection) sensor input

Range of measurement


Temperature:0 - 100℃
Flow rate indication: accumulated flow rate

Time indication: Year, Month, Day, Hour, Minute

Resolution pH:0.01pH ORP:1mV
Temperature compensation pH automatic temperature compensation Temperature compensation range: 0 - 100℃
Temperature measurement element 6.8kΩ、1kΩ、500Ω
Calibration Automatic calibration

With automatic calibration solution judgment functions

pH6.86 and either pH4.01, 9.18 or 1.68 (JIS)

Manual calibration pH6.86, 7.00 and solutions that differ from them by 2pH or more
Control output

Output for pump or alarm … ON/OFF control (with DIFF) interlocking with outside 2 points
Output for controlling external equipment … interlocking with outside 1 point

*Maximum load capacity: 100VA each (inductive load) voltage-applied output

Control input No voltage contact
Control method

Pump control (ON/OFF; time division proportional; twin timer)
Pump automatic (external signal input)

Mixer automatic (external signal input)

Communication functions RS232C
Power supply AC100V/200V±10% Single phase 50/60Hz
Power consumption About 10VA
Protective construction Drip-proof construction: IP54 or equivalent (when using sunshade cover)
Outer dimensions 138(W)×138(H)×175(D)mm
Weight About 2kg
Standard accessories Sunshade cover

Outline drawing

      CAD DATA  


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