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pH/ORP Indication record adjustment meter

pH/ORP指示調節記録計 RE-7

Hybrid pH/ORP Indication record adjustment meter

The DIN standard 144X144mm size is employed.
At a predetermined time, values can be printed on a recorder.  (Measured value, time)
(Measured value, time)
Advantages Applications Specifications
Outline drawing Relevant  


・Automatic calibration by one-touch operation.
・pH/ORP can be set by key operation.
・Ready for use with 5 types of temperature compensation elements.
・By combination with lead-free electrodes, environmentally friendly measurement has been realized.
・Excellent dustproofness/waterproofness (IP65 compliant).


・Recording of drainage treatment.
・pH measurement and control, etc. of chemical solution.
・Measurement and control record of pH treatment solution.


Name pH meter/ORP indication adjustment recorder
Type RE-7
Method of measurement pH: glass electrode measuring method
ORP: metal electrode measuring method
Range of measurement pH:0.00-14.00 ORP:-2000-+2000V
Resolution pH:0.01pH ORP:1V
Temperature compensation element 500Ω (25℃), 6.8kΩ (25), 350Ω(25)
Ready for use with 1000Ω(0) and 10kΩ(25)
Temperature compensation range 0 - 100(in the case of pH meter)
Calibration functions Automatic calibration With automatic calibration solution judgment functions
pH6.86 and either pH4.01, 9.18, or 1.68(JIS)
pH7.00 and either 4.00 or 10.00(USA)
Manual calibration H6.86, 7.00 and solutions that differ from them by 2pH or more
Recording method Analog recording: Disposable felt-tip pen
Digital printing: Wire dot(1-color ink ribbon)
Recording color Analog recording: 1 pen (red)
Digital printing: Purple
Recording response time 5,10,15,20,25,30,40,50,60,75,80,90,
Printing at predetermined time Printing time and measured pH at each predetermined time.

Printing intervals to be chosen from: 10 minutes, 15 minutes, 20 minutes,

30 minutes, 1 hour, 

2 hours, 3 hours, 4 hours, 6 hours, 8 hours, 12 hours, and 24 hours.
Printing at each interval that has been set with the printing start time being used as the reference time
Synchronous/asynchronous printing can be chosen.
Memory Protected with a lithium battery having built-in clock functions

Battery life is 10 years (total non-energized period of measuring apparatus:

5 years)

Set/calibrated value data are protected with a non-volatile memory.
Indication 7-segment LED, Letter height: 18mm
Indicating measured value, year/month/day, time, recording paper feeding speed, 
alarm set value, etc. on the display equipment.
The year is set in Common Era, and a leap year is changed automatically.
Contact output Number of contacts: 3 contacts
Alarm contact output(ALM1, ALM2)
Contact mode: Relay contact, 1a(no voltage contact)
Contact capacity: AC250V 3A(resistance load)
Contact functions: Upper limit/lower limit operation can be chosen.
Alarm contact output(ALM3)
Contact mode: Relay contact, 1a(no voltage contact)
Contact capacity: AC250V 3A(resistance load)
Contact functions: Abnormal alarm operation
Control operation ON/OFF control
Record scaling pH: Can be set to an arbitrary range of which span is 4pH or more
(At the time of delivery: 0.00 - 14.00)
ORP: Can be set to an arbitrary range of which span is 400mV or more
(At the time of delivery: -700 - 700)
Added functions Various types of error messages
Calibration error ・Temperature sensor error
Outside of measurement range error ・System error
Ambient temperature/humi
0 - 50, 20 - 80RH or less (no condensation)
Power supply AC100-240V 50/60Hz 35VA
Dimensions 144(W)×144(H)×188(D) mm
Weight About 2 kg

Outline drawing

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