
Portable pH Orp Conductivity TDS Salinity Resistivity Do Meter
Shanghai Total Industrial Co., Ltd.- Display:Digital
- Portable:Portable
- Appliance:Food Analysis, Medical Research, Biochemistry
- Certification:ISO9001, RoHS, CE
- pH Range:-2.00 to 19.99pH
- Mv/Orp Range:-1999 Mv ~ +1999mv
Base Info
- Model NO.:SR711, SR721, SR723, SR725, SR731, SR736, SR751
- Conductivity Range:0.00~19.99,20.0~199.9,200~1999us,Cm;
- TDS Range:(0 to 100) G,L
- Salinity Range:(0 to 100) Ppt
- Resistivity Range:(0 to 100) Momega.Cm
- Do Range:(0 to 40.00) Mg,L(Ppm) (0 to 200.0)%
- IP Rating:IP57 Dustproof and Waterproof
- Transport Package:Carrying Case
- Specification:360* 270*76mm, 1.7kg
- Trademark:ShowRange
- Origin:China
- HS Code:9025800000
- Production Capacity:1000PCS,Month
Description
3. DO500 DO electrode, 3pcs of membrane caps inner solution for DO probe (30ml)
Model: SR731 pH/ORP/Conductivity/TDS/Sal./Res./Temp. 7-in-1 Meter
Prominent Features
1. Multi-parameter meter, equipped with pH electrode, ORP electrode, conductivity electrode, equips with calibration solution and special carrying case, easy to use.
2. Built-in microprocessor chip, with the intelligent functions of automatic calibration, automatic temperature compensation, data storage, function setting and self-diagnose information, auto power off and low voltage display etc.
3. Adopts digital filter and step slipping technology to intelligently improve meter's response speed and result accuracy. "" will appear when reading to be stable.
4. Automatically recognize 13 kinds of pH standard buffer solution. User can choose anyone from three series of buffer solutions: Europe & U.S.A. series, NIST series, China series.
5. High purified water and ammonia added purified water pH measuring mode can be set up, for this two special pH measuring modes, besides the general slope temperature compensation, also added function of nonlinearity solution temperature compensation to make measurement more accurate, especially suitable for the fields of electric power and petrochemical etc.
6. Adopts advanced automatic frequency convertible and voltage regulation technology to enlarge the measuring range of conductivity electrode which constant K=1 to 10 times. It can meet measuring accuracy requirement for range within 0 to 200mS/cm by using only one-point calibration. It is the particular one-point calibration function for this meter.
7. Automatically recognize 8 kinds of conductivity standard solution. User can choose anyone from two series of standard solutions: Europe & USA series and China series.
8. Automatically select conductivity measuring range, the meter will do non-linearity temperature compensation test for purified and high purified water less than 10uS/cm, which greatly improve the measuring accuracy. It is especially suitable for use in fields of electric power, microelectronics and medicine.
9. Meter's circuit board adopts SMT film-covering technology to improve meter's production reliability.
10. Meter has the blue backlight LCD display.
11. Dustproof and waterproof meter meets IP57 rating.
Technical parameter
1. pH:
2. ORP(mV):
3. Conductivity:
4. Other Technical Parameters:
Package includes
Model: SR736 pH/mV/Conductivity/TDS/Sal./Res./DO/Temp. 8-in-1 Meter
Extech DO700 is OEM made based on ours this meter SR736. They use totally same IC borard and shell, and technology to produce.
Prominent Features
1. Multi-parameter meter, equipped with pH electrode, ORP Electrode, conductivity electrode, temperature electrode, DO
electrode, when connect the electrode to the meter, the meter can automatically know the electrode, easy to use.
2. Built-in microprocessor chip.. Its features up to automatic calibration, automatic temperature compensation, data storage, auto power off, low voltage indication, functions setting and automatic self-diagnose etc.
3. Adopts digital filter and step slipping technology to intelligently improve meter's response speed and result accuracy. "" will appear when reading to be stable.
4. Automatically recognize 13 kinds of pH standard buffer solution. User can choose anyone from three series of buffer solutions: Europe & U.S.A. series, NIST series, and China series.
5. High purified water and ammonia added purified water pH measuring mode can be set up, for this two special pH measuring modes, besides the general slope temperature compensation, also added function of nonlinearity solution temperature compensation to make measurement more accurate, especially suitable for the fields of electric power and petrochemical etc.
6. Adopts advanced automatic frequency convertible and voltage regulation technology to enlarge the measuring range of conductivity electrode which constant K=1 to 10 times. It can meet measuring accuracy requirement for range within 0 to 200mS/cm by using only one-point calibration. It is the particular one-point calibration function for this meter.
7. Automatically recognize 8 kinds of conductivity standard solution. User can choose anyone from two series of standard solutions: Europe & USA series and CHINA series.
8. Automatically select conductivity measuring range, the meter will do non-linearity temperature compensation test for purified and high purified water less than 10uS/cm, which greatly improve the measuring accuracy. It is especially suitable for use in fields of electric power, microelectronics and medicine.
9. Equips new type of DO electrode with temperature and salinity sensor which has function of automatic temperature compensation and automatic salinity compensation as well as manual Atmospheric pressure compensation inside meter, easy to use, accurate to measure.
10. Polarogram type DO electrode has special electrode calibration cap. Only needs 3 to 5 minutes for electrode polarization. Electrode adopts combination diaphragm cap which very convenient to use. Each DO electrode equips with three spare diaphragms caps.
11. Meter's circuit board adopts SMT film-covering technology to improve meter's production reliability.
12. Meter has the back light LCD display monitor.
13. Dustproof and waterproof meter meets IP57 rating.
Technical parameter
1. pH:
2. Conductivity:
3. Dissolved Oxygen:
4. Other Technical Parameters:
Package includes
Model: SR751 pH/ORP/Conductivity/TDS/Sal./Res./DO/Temp. 8-in-1 Meter
Prominent Features
1. Multi-parameter meter, equipped with pH electrode, ORP Electrode, conductivity electrode, temperature electrode, DO
electrode, when connect the electrode to the meter, the meter can automatically know the electrode, easy to use.
2. Built-in microprocessor chip.. Its features up to automatic calibration, automatic temperature compensation, data storage, auto power off, low voltage indication, functions setting and automatic self-diagnose etc.
3. Adopts digital filter and step slipping technology to intelligently improve meter's response speed and result accuracy. "" will appear when reading to be stable.
4. Automatically recognize 13 kinds of pH standard buffer solution. User can choose anyone from three series of buffer solutions: Europe & U.S.A. series, NIST series, and China series.
5. High purified water and ammonia added purified water pH measuring mode can be set up, for this two special pH measuring modes, besides the general slope temperature compensation, also added function of nonlinearity solution temperature compensation to make measurement more accurate, especially suitable for the fields of electric power and petrochemical etc.
6. Adopts advanced automatic frequency convertible and voltage regulation technology to enlarge the measuring range of conductivity electrode which constant K=1 to 10 times. It can meet measuring accuracy requirement for range within 0 to 200mS/cm by using only one-point calibration. It is the particular one-point calibration function for this meter.
7. Automatically recognize 8 kinds of conductivity standard solution. User can choose anyone from two series of standard solutions: Europe & USA series and CHINA series.
8. Automatically select conductivity measuring range, the meter will do non-linearity temperature compensation test for purified and high purified water less than 10uS/cm, which greatly improve the measuring accuracy. It is especially suitable for use in fields of electric power, microelectronics and medicine.
9. Equips new type of DO electrode with temperature and salinity sensor which has function of automatic temperature compensation and automatic salinity compensation as well as manual Atmospheric pressure compensation inside meter, easy to use, accurate to measure.
10. Polarogram type DO electrode has special electrode calibration cap. Only needs 3 to 5 minutes for electrode polarization. Electrode adopts combination diaphragm cap which very convenient to use. Each DO electrode equips with three spare diaphragms caps.
11. Meter's circuit board adopts SMT film-covering technology to improve meter's production reliability.
12. Meter has the back light LCD display monitor.
13. Dustproof and waterproof meter meets IP57 rating.
Technical parameter
1. pH:
2. ORP(mV):
3. Conductivity:
4. Dissolved Oxygen:
5. Other Technical Parameters:
Package includes







Model: SR731 pH/ORP/Conductivity/TDS/Sal./Res./Temp. 7-in-1 Meter
Prominent Features
1. Multi-parameter meter, equipped with pH electrode, ORP electrode, conductivity electrode, equips with calibration solution and special carrying case, easy to use.
2. Built-in microprocessor chip, with the intelligent functions of automatic calibration, automatic temperature compensation, data storage, function setting and self-diagnose information, auto power off and low voltage display etc.
3. Adopts digital filter and step slipping technology to intelligently improve meter's response speed and result accuracy. "" will appear when reading to be stable.
4. Automatically recognize 13 kinds of pH standard buffer solution. User can choose anyone from three series of buffer solutions: Europe & U.S.A. series, NIST series, China series.
5. High purified water and ammonia added purified water pH measuring mode can be set up, for this two special pH measuring modes, besides the general slope temperature compensation, also added function of nonlinearity solution temperature compensation to make measurement more accurate, especially suitable for the fields of electric power and petrochemical etc.
6. Adopts advanced automatic frequency convertible and voltage regulation technology to enlarge the measuring range of conductivity electrode which constant K=1 to 10 times. It can meet measuring accuracy requirement for range within 0 to 200mS/cm by using only one-point calibration. It is the particular one-point calibration function for this meter.
7. Automatically recognize 8 kinds of conductivity standard solution. User can choose anyone from two series of standard solutions: Europe & USA series and China series.
8. Automatically select conductivity measuring range, the meter will do non-linearity temperature compensation test for purified and high purified water less than 10uS/cm, which greatly improve the measuring accuracy. It is especially suitable for use in fields of electric power, microelectronics and medicine.
9. Meter's circuit board adopts SMT film-covering technology to improve meter's production reliability.
10. Meter has the blue backlight LCD display.
11. Dustproof and waterproof meter meets IP57 rating.
Technical parameter
1. pH:
Measuring range | (-2.00 to 19.99) pH |
Resolution | 0.1/0.01 pH |
Accuracy | Meter:±0.01pH; connect meter with electrode: ±0.02pH |
Temp. Compensation range | (0 to 100) ºC (automatic) |
Measuring range (mV/ORP/EH) | -1999 mV to 0 to 1999mV |
Resolution | 1mV |
Accuracy | Meter:±0.1% FS, connect meter with electrode: ±15mV |
Measuring range | Conductivity: (0.00 to 19.99)μS/cm (20.0 to 199.9)μS/cm (200 to 1999)μS/cm (2.00 to 19.99) mS/cm (20.0 to 199.9) mS/cm TDS: (0 to 100) g/L Salinity : (0 to 100) ppt Resistivity:(0 to 100) MΩ*cm |
Resolution | 0.01/0.1/1μS/cm 0.01/0.1 mS/cm |
Accuracy | Meter:±1.0% FS, connect meter with electrode:±1.5% FS |
Temp. compensation range | (0 to 50) ºC (automatic) |
Electrode constant | 0.1 / 1 / 10 cm-1 |
Benchmark temperature | 25ºC, 20ºCand 18ºC |
Data storage | 300 groups |
Storage content | Series number, measuring value measuring unit and temperature, |
Power | Two AA batteries (1.5V x2) |
Size and weight | (360 x 270x 76) mm/1.7kg |
Quality and safety certification | ISO9001:2000, CE and CMC |
IP rating | IP57 Dustproof and waterproof |
1. SR731portable meter; | 5. pH calibration solution (4.00, 7.00, 10.01pH/50ml) |
2. 201T-S plastic pH/ATC 3-in-1 combination electrode | 6. Conductivity calibration solution (1413μS/cm/50ml) |
3. 301Pt-S ORP combination electrode | 7. Carrying case |
4. 2301-S plastic conductivity electrode (ATC, K=1) |
Model: SR736 pH/mV/Conductivity/TDS/Sal./Res./DO/Temp. 8-in-1 Meter
Extech DO700 is OEM made based on ours this meter SR736. They use totally same IC borard and shell, and technology to produce.
Prominent Features
1. Multi-parameter meter, equipped with pH electrode, ORP Electrode, conductivity electrode, temperature electrode, DO
electrode, when connect the electrode to the meter, the meter can automatically know the electrode, easy to use.
2. Built-in microprocessor chip.. Its features up to automatic calibration, automatic temperature compensation, data storage, auto power off, low voltage indication, functions setting and automatic self-diagnose etc.
3. Adopts digital filter and step slipping technology to intelligently improve meter's response speed and result accuracy. "" will appear when reading to be stable.
4. Automatically recognize 13 kinds of pH standard buffer solution. User can choose anyone from three series of buffer solutions: Europe & U.S.A. series, NIST series, and China series.
5. High purified water and ammonia added purified water pH measuring mode can be set up, for this two special pH measuring modes, besides the general slope temperature compensation, also added function of nonlinearity solution temperature compensation to make measurement more accurate, especially suitable for the fields of electric power and petrochemical etc.
6. Adopts advanced automatic frequency convertible and voltage regulation technology to enlarge the measuring range of conductivity electrode which constant K=1 to 10 times. It can meet measuring accuracy requirement for range within 0 to 200mS/cm by using only one-point calibration. It is the particular one-point calibration function for this meter.
7. Automatically recognize 8 kinds of conductivity standard solution. User can choose anyone from two series of standard solutions: Europe & USA series and CHINA series.
8. Automatically select conductivity measuring range, the meter will do non-linearity temperature compensation test for purified and high purified water less than 10uS/cm, which greatly improve the measuring accuracy. It is especially suitable for use in fields of electric power, microelectronics and medicine.
9. Equips new type of DO electrode with temperature and salinity sensor which has function of automatic temperature compensation and automatic salinity compensation as well as manual Atmospheric pressure compensation inside meter, easy to use, accurate to measure.
10. Polarogram type DO electrode has special electrode calibration cap. Only needs 3 to 5 minutes for electrode polarization. Electrode adopts combination diaphragm cap which very convenient to use. Each DO electrode equips with three spare diaphragms caps.
11. Meter's circuit board adopts SMT film-covering technology to improve meter's production reliability.
12. Meter has the back light LCD display monitor.
13. Dustproof and waterproof meter meets IP57 rating.
Technical parameter
1. pH:
Measuring range | (-2.00 to 19.99) pH |
Resolution | 0.1/0.01 pH |
Accuracy | Meter:±0.01pH; connect meter with electrode: ±0.02pH |
Temp. Compensation range | (0 to 100) ºC (automatic) |
Measuring range | Conductivity: (0.00 to 19.99)μS/cm (20.0 to 199.9)μS/cm (200 to 1999)μS/cm (2.00 to 19.99) mS/cm (20.0 to 199.9) mS/cm TDS: (0 to 100) g/L Salinity : (0 to 100) ppt Resistivity:(0 to 100) MΩ·cm |
Resolution | 0.01/0.1/1μS/cm 0.01/0.1 mS/cm |
Accuracy | Meter:±1.0% FS, connect meter with electrode:±1.5% FS |
Temp. compensation range | (0 to 50) ºC (automatic) |
Electrode constant | 0.1 / 1 / 10 cm-1 |
Benchmark temperature | 25ºC, 20ºCand 18ºC |
Measuring range | (0 to 40.00) mg/L(ppm) (0 to 200.0) % |
Resolution | 0.1/0.01 mg/L(ppm) 1/0.1% |
Accuracy | Meter:±0.10 mg/L, connect meter with electrode:±0.40 mg/L |
Temp. Compensation range | (0 to 45) ºC (automatic) |
Salinity compensation range | (0 to 45) ppt (automatic) |
Barometric pressure compensation range | (66 to 200) kPa (manual) |
Automatic calibration | Air saturated by water; water saturated by air |
Electrode type | Polarogram type |
Data storage | 400 groups |
Storage content | Series number, measuring value measuring unit and temperature, |
Power | Two AA batteries (1.5V x2) |
Size and weight | (360 x 270x 76) mm/1.7kg |
Quality and safety certification | ISO9001:2000, CE and CMC |
IP rating | IP57 Dustproof and waterproof |
1. SR736portable meter; |
2. 201T-S plastic pH/ATC 3-in-1 combination electrode |
3. 2301-S plastic conductivity electrode (ATC, K=1) |
4. DO500 DO electrode, 3pcs of membrane caps inner solution for DO probe (30ml) |
5. pH calibration solution (4.00, 7.00, 10.01pH/50ml) |
6. Conductivity calibration solution (1413μS/cm/50ml) |
7. Carrying case |
8. Battles (1.5V x 2) |
9. Operation Manual |
Model: SR751 pH/ORP/Conductivity/TDS/Sal./Res./DO/Temp. 8-in-1 Meter
Prominent Features
1. Multi-parameter meter, equipped with pH electrode, ORP Electrode, conductivity electrode, temperature electrode, DO
electrode, when connect the electrode to the meter, the meter can automatically know the electrode, easy to use.
2. Built-in microprocessor chip.. Its features up to automatic calibration, automatic temperature compensation, data storage, auto power off, low voltage indication, functions setting and automatic self-diagnose etc.
3. Adopts digital filter and step slipping technology to intelligently improve meter's response speed and result accuracy. "" will appear when reading to be stable.
4. Automatically recognize 13 kinds of pH standard buffer solution. User can choose anyone from three series of buffer solutions: Europe & U.S.A. series, NIST series, and China series.
5. High purified water and ammonia added purified water pH measuring mode can be set up, for this two special pH measuring modes, besides the general slope temperature compensation, also added function of nonlinearity solution temperature compensation to make measurement more accurate, especially suitable for the fields of electric power and petrochemical etc.
6. Adopts advanced automatic frequency convertible and voltage regulation technology to enlarge the measuring range of conductivity electrode which constant K=1 to 10 times. It can meet measuring accuracy requirement for range within 0 to 200mS/cm by using only one-point calibration. It is the particular one-point calibration function for this meter.
7. Automatically recognize 8 kinds of conductivity standard solution. User can choose anyone from two series of standard solutions: Europe & USA series and CHINA series.
8. Automatically select conductivity measuring range, the meter will do non-linearity temperature compensation test for purified and high purified water less than 10uS/cm, which greatly improve the measuring accuracy. It is especially suitable for use in fields of electric power, microelectronics and medicine.
9. Equips new type of DO electrode with temperature and salinity sensor which has function of automatic temperature compensation and automatic salinity compensation as well as manual Atmospheric pressure compensation inside meter, easy to use, accurate to measure.
10. Polarogram type DO electrode has special electrode calibration cap. Only needs 3 to 5 minutes for electrode polarization. Electrode adopts combination diaphragm cap which very convenient to use. Each DO electrode equips with three spare diaphragms caps.
11. Meter's circuit board adopts SMT film-covering technology to improve meter's production reliability.
12. Meter has the back light LCD display monitor.
13. Dustproof and waterproof meter meets IP57 rating.
Technical parameter
1. pH:
Measuring range | (-2.00 to 19.99) pH |
Resolution | 0.1/0.01 pH |
Accuracy | Meter:±0.01pH; connect meter with electrode: ±0.02pH |
Temp. Compensation range | (0 to 100) ºC (automatic) |
Measuring range (mV/ORP/EH) | -1999 mV to 0 to 1999mV |
Resolution | 1mV |
Accuracy | Meter:±0.1% FS, connect meter with electrode: ±15mV |
Measuring range | Conductivity: (0.00 to 19.99)μS/cm (20.0 to 199.9)μS/cm (200 to 1999)μS/cm (2.00 to 19.99) mS/cm (20.0 to 199.9) mS/cm TDS: (0 to 100) g/L Salinity : (0 to 100) ppt Resistivity:(0 to 100) MΩ*cm |
Resolution | 0.01/0.1/1μS/cm 0.01/0.1 mS/cm |
Accuracy | Meter:±1.0% FS, connect meter with electrode:±1.5% FS |
Temp. compensation range | (0 to 50) ºC (automatic) |
Electrode constant | 0.1 / 1 / 10 cm-1 |
Benchmark temperature | 25ºC, 20ºCand 18ºC |
Measuring range | (0 to 40.00) mg/L(ppm) (0 to 200.0) % |
Resolution | 0.1/0.01 mg/L(ppm) 1/0.1% |
Accuracy | Meter:±0.10 mg/L, connect meter with electrode:±0.40 mg/L |
Temp. Compensation range | (0 to 45) ºC (automatic) |
Salinity compensation range | (0 to 45) ppt (automatic) |
Barometric pressure compensation range | (66 to 200) kPa (manual) |
Automatic calibration | Air saturated by water; water saturated by air |
Electrode type | Polarogram type |
Data storage | 400 groups |
Storage content | Series number, measuring value measuring unit and temperature, |
Power | Two AA batteries (1.5V x2) |
Size and weight | (360 x 270x 76) mm/1.7kg |
Quality and safety certification | ISO9001:2000, CE and CMC |
IP rating | IP57 Dustproof and waterproof |
1. SR751portable meter; | 5. DO500 DO electrode 3pcs of membrane caps inner solution for DO probe (30ml) |
2. 201T-S plastic pH/ATC 3-in-1 combination electrode | 6. pH calibration solution (4.00, 7.00, 10.01pH/50ml) |
3. 301Pt-S ORP combination electrode | 7. Conductivity calibration solution (1413μS/cm/50ml) |
4. 2301-S plastic conductivity electrode (ATC, K=1) | 8. Carrying case |






