Online pH Meter
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| Brand | Huake Instrument |
|---|---|
| Origin | Beijing, China |
| Model | HK-1309pH |
| Measurement Principle | Conductivity-based pH calculation (VGB-R 450L compliant) |
| pH Range | 7.5–11.5 |
| Cation Conductivity Range | 0.000–200.0 µS/cm (with selectable cell constants: 0.01, 0.1, 1.0 cm⁻¹) |
| Resolution | 0.001–0.1 µS/cm (dependent on range) |
| Ammonia Range | 0.01–10 ppm |
| Temperature Compensation | Linear, neutral salt, ammonia water, strong acid modes |
| Compliance | HK-338 Enterprise Standard, JJG 376–2007 Verification Regulation for Conductivity Meters |
| System Integration | Integrated stainless-steel panel with flow cell, cation exchange column, regeneration unit, solenoid valves, and dual-conductivity sensors |
| Brand | Huake Instrument |
|---|---|
| Origin | Beijing, China |
| Model | HK-328 |
| Display | 192 × 64 dot-matrix LCD (Chinese/English selectable) |
| pH Range | 0.00–14.00 pH |
| ORP Range | −1000 to +1000 mV |
| Temperature Range | 0.00–99.9 °C |
| ATC Range | 0.1–60.0 °C |
| pH Resolution | 0.01 pH |
| mV Resolution | 0.1 mV |
| Temp. Resolution | 0.1 °C |
| pH Accuracy | ±0.05 pH |
| Temp. Accuracy | ±0.5 °C |
| Response Time (T90) | 90 s at 25 °C |
| Output | Dual isolated 4–20 mA (or 0–10 mA / 0–20 mA), configurable for pH or temperature |
| Max. Load | 800 Ω @ 20 mA |
| Alarm Outputs | 2 programmable relay outputs |
| Communication | RS-485, Profibus DP, HART |
| Sample Temp. | 5–50 °C |
| Sample Flow Rate | 6 L/h |
| Max. Suspended Solids | ≤5 µm (no colloids or oils) |
| Ambient Temp. | 5–45 °C |
| Humidity | ≤90% RH (non-condensing) |
| Storage Temp. | −20 to +55 °C (electrode stored separately >0 °C) |
| Power Supply | AC 100–240 V, 50–60 Hz |
| Power Consumption | ≤8 W |
| Dimensions | 146 × 146 × 154 mm (W×H×D) |
| Panel Cutout | 139 × 139 mm |
| Weight | 2 kg |
| Brand | Huake Instrument |
|---|---|
| Model | HK-328W |
| Enclosure | Die-cast aluminum, ESD-safe |
| Display | 192 × 64 dot-matrix LCD (Chinese/English selectable) |
| pH Range | 0.00–14.00 pH |
| mV Range | −1000 to +1000 mV |
| Temperature Range | 0.00–99.9 °C (ATC: 0.1–60.0 °C) |
| pH Resolution | 0.01 pH |
| mV Resolution | 0.1 mV |
| Temp. Resolution | 0.1 °C |
| pH Accuracy | ±0.1 pH |
| Temp. Accuracy | ±0.5 °C |
| Output | Dual isolated 4–20 mA (or 0–10 mA / 0–20 mA), ±1% FS, load ≤800 Ω |
| Alarm Outputs | 2 relay outputs |
| Communication | RS485, Profibus DP, HART |
| Sample Temp. | 0.0–60.0 °C |
| Max. Sample Pressure | <0.6 MPa |
| Ambient Temp. | 5–60 °C |
| Humidity | ≤95% RH |
| Storage Temp. | −25–55 °C (electrode storage >0 °C) |
| Power | AC 100–240 V, 50–60 Hz |
| Power Consumption | 8 W |
| Dimensions | 158 × 158 × 170 mm (W×H×D) |
| Panel Cutout | 139 × 139 mm |
| Weight | 2 kg |
| Electrode Type | Wastewater-compatible triple-junction composite pH electrode (standard 10 m or optional 20 m cable) |
| Brand | Huakeyi |
|---|---|
| Origin | Beijing, China |
| Model | HK-6010 |
| Measurement Range | pH 2.00–11.00 |
| Temperature Range | 0.00–99.9 °C |
| ATC Range | 0.1–60 °C |
| pH Resolution | 0.01 pH |
| Temperature Resolution | 0.1 °C |
| pH Accuracy | ±0.1 pH |
| Temperature Accuracy | ±0.5 °C |
| Output Signals | Isolated 0–10 mA / 0–20 mA / 4–20 mA (±1% FS) |
| Sample Temp. | 5.0–50.0 °C |
| Max. Sample Pressure | <0.6 MPa |
| Ambient Temp. | 5–50 °C |
| Humidity | ≤95% RH |
| Dimensions (Enclosure) | 300 mm × 400 mm × 200 mm (W×H×D) |
| Power Supply | AC 100–240 V, 50–60 Hz |
| Power Consumption | ≤40 W |
| Dielectric Strength | 1500 VAC for 1 min |
| Brand | JENCO |
|---|---|
| Origin | USA |
| Model | 3675 |
| pH Range | -2.00 to 14.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.05 pH |
| Temperature Compensation | Automatic, 0–100 °C |
| Dimensions | 96 × 48 × 172 mm |
| Weight | 0.45 kg |
| Output | Isolated 4–20 mA |
| Relay Outputs | 2 programmable relays |
| Display | LCD |
| Brand | JENCO |
|---|---|
| Origin | USA |
| Model | 6010M |
| Measurement Range | pH: –2.00 to 16.00 |
| ORP | –2000 to +2000 mV |
| Temperature | –10.0 to 130.0 °C |
| Resolution | 0.01 pH, 1 mV, 0.1 °C |
| Accuracy | ±0.01 pH |
| Dimensions | 186 × 70 × 37 mm |
| Weight | 0.26 kg |
| Brand | JENCO |
|---|---|
| Origin | USA |
| Model | JENCO 6219 |
| pH Range | -2.000–16.000 pH |
| pH Resolution | 0.01/0.001 pH |
| pH Accuracy | ±0.1% of full scale ±1 digit |
| ORP Range | -1999.9–1999.9 mV |
| ORP Resolution | 1/0.1 mV |
| ORP Accuracy | ±0.1% of full scale ±1 digit |
| Ion Concentration Range | 0.0–119.8 conc. |
| Ion Resolution | 0.05/0.1 |
| Ion Accuracy | ±2 digits |
| Temperature Range | -5.0–125.0 °C |
| Temperature Resolution | 0.1 °C |
| Temperature Accuracy | ±0.5 °C |
| Input Impedance | >10¹³ Ω |
| Temperature Sensor | 10 kΩ thermistor (25 °C) |
| Calibration | Auto two-point with standard buffers (pH 4.00, 6.86, 9.18) |
| Endpoint Detection & Hold Function | Yes |
| Data Storage | Calibration history and settings |
| Communication Interface | RS-232C |
| Power Supply | AC adapter (DC 9 V output) or 6 × AA batteries |
| Dimensions | 250 × 240 × 100 mm |
| Weight | 1.07 kg (including batteries) |
| Brand | JENCO |
|---|---|
| Origin | USA |
| Model | 6230M |
| Measurement Range | pH: –2.00 to 16.00 |
| ORP | –2000 to +2000 mV |
| Temperature | –10.0 to 130.0 °C |
| Resolution | 0.01 pH, 1 mV, 0.1 °C |
| Accuracy | ±0.01 pH |
| Dimensions | 241 × 86 × 72 mm |
| Weight | 0.43 kg |
| Data Storage | 40 sets |
| Calibration | Auto 3-point pH calibration |
| Temperature Compensation | Automatic and manual |
| Power Supply | AC/DC dual-mode |
| Interface | RS-232C |
| Brand | JENCO |
|---|---|
| Origin | USA |
| Model | 6311 |
| pH Range | -2.00 to 16.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.01 pH |
| Dimensions | 96 × 96 × 148 mm |
| Weight | 0.96 kg |
| IP Rating | IP65 |
| Temperature Compensation | Automatic, with user-selectable sensor types (Pt1000, TH10K, BALCO 3K) |
| Output | Isolated, reversible 4–20 mA |
| Relay Outputs | Four pH/ORP control relays + one cleaning relay |
| Communication | RS-485 |
| Certifications | CE |
| Brand | JENCO |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Imported |
| Model | JENCO Industrial Online pH Transmitter Series 691/692 |
| Measurement Range | pH: –2.00 to 16.00 |
| ORP | –2000 to +2000 mV |
| Temperature | –10.0 to 130.0 °C |
| Resolution | 0.01 pH, 1 mV, 0.1 °C |
| Accuracy | ±0.01 pH |
| Dimensions | 96 × 48 × 167 mm |
| Brand | KC Starlight |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | XG09 |
| Measurement Range | 0.00–14.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.02 pH |
| Temperature Compensation Range | 0.0–60.0 °C |
| Dimensions | 145 mm × 120 mm × 145 mm (L×D×H) |
| Weight | 0.63 kg |
| Display | 128×64 dot-matrix LCD with Chinese interface |
| Input Impedance | ≥10¹² Ω |
| Temperature Sensor | Pt1000 |
| Output Signals | 0–10 mA / 0–20 mA / 4–20 mA (selectable, load <750 Ω) |
| Relay Outputs | 2 SPST (AC220 V/3 A or DC30 V/3 A) |
| Protection Rating | IP65 |
| Power Supply | AC 220 V ±10%, 50 Hz ±10% |
| Data Retention Time | >10 years after power loss |
| Operating Ambient | 5–45 °C, ≤85% RH (non-condensing) |
| Storage Temperature | −25–55 °C (electrode storage >0 °C) |
| Sample Temp. Range | 5–60 °C |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | PHBJ-260F |
| Price | Upon Request |
| pH Measurement Range | –2.00 to 20.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.01 pH |
| Temperature Compensation Range | 0–100 °C (Automatic) |
| Dimensions | Approx. 180 × 80 × 50 mm |
| Weight | Approx. 0.3 kg |
| Display | High-definition color LCD touchscreen |
| Language Support | English & Chinese |
| pH Resolution Options | 0.01 / 0.1 pH |
| mV Resolution Options | 0.1 / 1 mV |
| Temperature Units | °C or °F |
| Auto-Diagnostics | Yes |
| Auto-Power-Off | Yes |
| Power Failure Data Protection | Yes |
| Factory Reset | Yes |
| Firmware Upgrade Capability | Yes |
| IP Rating | IP65 |
| Electrode | Integrated tri-combination pH electrode (standard) |
| Accessories | Electrode holder, silicone protective sleeve, wrist strap, portable carrying case, calibration buffer solutions |
| Endpoint Detection | Intelligent auto-read with manual/timed/interval modes |
| Calibration | 1–5 point pH calibration |
| Buffer Recognition | Automatic identification of GB, DIN, and NIST standard buffer sets |
| Data Storage Capacity | 1000 measurement records |
| Data Management | View, delete, export, print |
| GLP Compliance | Yes (audit trail, operator ID, timestamp, calibration history) |
| Printing Interface | RS-232 printer support (configurable print format) |
| PC Connectivity | USB interface with dedicated software |
| Power Supply | Rechargeable Li-ion battery |
| Battery Indicators | Low-voltage warning & charging status feedback |
| Backlight Adjustment | Yes |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PHG-217C, PHG-217D |
| Price Range | USD 850–1,420 (FOB Shanghai) |
| pH Range | 0.00–14.00 pH |
| ORP Range | −1800 to +1800 mV |
| Temperature Range | −10.0 to 120.0 °C |
| pH Resolution | 0.01 pH |
| ORP Resolution | 1 mV |
| Temperature Resolution | 0.1 °C |
| pH Accuracy | ±0.05 pH ±1 digit |
| ORP Accuracy | ±10 mV |
| Temperature Accuracy | ±1.0 °C |
| Electronic Unit pH Accuracy | ±0.03 pH ±1 digit |
| Electronic Unit Stability | ≤±0.02 pH/24 h |
| Input Impedance | ≥1 × 10¹² Ω |
| Input Current | ≤2 × 10⁻¹² A |
| Output | Isolated 4–20 mA DC (configurable span), RS-232 or RS-485 (user-selectable), 4 programmable relay outputs |
| Data Storage | 400 records with configurable logging interval |
| Auto Calibration | Recognizes pH 4.00, 6.86, and 9.18 buffers |
| ATC | Automatic temperature compensation via integrated Pt1000 or external RTD |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10 %, 50 Hz ±1 % |
| Dimensions (W×H×D) | 144 mm × 144 mm × 163 mm |
| Weight | 2.5 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | PHG-217C, PHG-217D |
| Measurement Range | pH (0.00–14.00), ORP (−1800–+1800 mV), Temperature (−10.0–120.0 °C) |
| Resolution | 0.01 pH, 1 mV, 0.1 °C |
| Accuracy | pH ±0.05 pH ±1 digit, ORP ±10 mV, Temp ±1.0 °C |
| Input Impedance | ≥1 × 10¹² Ω |
| Input Current | ≤2 × 10⁻¹² A |
| Stability | ≤±0.02 pH/24 h |
| Output | Isolated 4–20 mA DC (configurable span), RS-232 or RS-485 (user-selectable), 4 control relays |
| Data Storage | 400 records with programmable interval |
| Auto Calibration | Supports recognition of pH 4.00, 6.86, and 9.18 buffers |
| Temperature Compensation | Automatic (NTC or Pt100 sensor input) |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% |
| Dimensions | 144 × 144 × 163 mm |
| Weight | 2.5 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PHG-21C, PHG-21D |
| Price | ¥2600 |
| pH Range | (0.00–14.00) pH |
| ORP Range | (−1800–+1800) mV |
| Temperature Range | (−10.0–120.0) °C |
| Resolution | 0.01 pH / 1 mV / 0.1 °C |
| Accuracy | ±0.05 pH / ±10 mV / ±1 °C |
| Repeatability | ≤0.02 pH / 3 mV |
| Electronic Unit Error | ±0.03 pH ±1 digit / ±1 mV ±1 digit / ±0.3 °C |
| Stability | ≤±0.02 pH/24 h |
| Input Impedance | ≥1×10¹² Ω |
| Input Current | ≤2×10⁻¹² A |
| Enclosure Rating | IP65 |
| Power Supply | AC (220±22) V, (50±1) Hz or DC 24 V |
| Dimensions | 144×144×163 mm |
| Weight | 2.5 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Model | PHG-21C, PHG-21D |
| Measurement Range | pH (0.00–14.00), ORP (−1800–+1800 mV), Temperature (−10.0–120.0 °C) |
| Resolution | 0.01 pH, 1 mV, 0.1 °C |
| Accuracy | ±0.05 pH, ±10 mV, ±1.0 °C |
| Repeatability | ≤0.02 pH, ≤3 mV |
| Input Impedance | ≥1 × 10¹² Ω |
| Input Current | ≤2 × 10⁻¹² A |
| Stability | ≤±0.02 pH/24 h |
| Output | Isolated 4–20 mA DC (configurable span) |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10 %, 50 Hz ±1 Hz or DC 24 V |
| Dimensions | 144 × 144 × 163 mm |
| Weight | 2.5 kg |
| Key | Brand: Leici |
|---|---|
| Model | PHG-7685A |
| Measurement Range | 0.00–14.00 pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.05 pH ±1 digit |
| Temperature Range | −10.0–120.0 °C |
| Temp. Resolution | 0.1 °C |
| Temp. Accuracy | ±0.5 °C (0.0–60.0 °C), ±1.0 °C (others) |
| Repeatability | 0.02 pH |
| Electronic Unit Error | ±0.03 pH ±1 digit |
| Stability | ≤±0.02 pH/24 h |
| Input Impedance | ≥1×10¹² Ω |
| Input Current | ≤2×10⁻¹² A |
| Output | 4–20 mA isolated analog output, RS-232 or RS-485 (user-selectable) |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10 %, 50 Hz ±1 % |
| Dimensions | 628 × 288 × 224 mm |
| Weight | 10 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | PHG-7685A |
| Price Range | USD 1,400 – 4,200 (FOB) |
| Measurement Range | (0.00–14.00) pH |
| Resolution | 0.01 pH |
| Accuracy | ±0.05 pH ±1 digit |
| Dimensions | 628 × 288 × 224 mm |
| Weight | 10 kg |
| Temperature Range | −10.0 to 120.0 °C |
| Temp. Resolution | 0.1 °C |
| Temp. Accuracy | ±0.5 °C (0.0–60.0 °C), ±1.0 °C (other) |
| Repeatability | 0.02 pH |
| Electronic Unit Accuracy | ±0.03 pH ±1 digit |
| Drift Stability | ≤±0.02 pH / 24 h |
| Input Impedance | ≥1 × 10¹² Ω |
| Input Current | ≤2 × 10⁻¹² A |
| Enclosure Rating | IP65 |
| Power Supply | AC (220 ± 22) V, (50 ± 0.5) Hz |
| Output | Isolated 4–20 mA DC (configurable pH span), RS-232 or RS-485 (user-selectable) |
| Brand | Leici |
|---|---|
| Model | PHSJ-4F |
| Measurement Range | pH (−2.000 to 20.000), mV (−2000.00 to 2000.00), Temperature (−10.0 to 135.0 °C / 14.0 to 275.0 °F) |
| Resolution | pH (0.001/0.01/0.1), mV (0.01/0.1/1), Temp (0.1 °C/0.1 °F) |
| Accuracy | pH ±0.002, mV ±0.03% or ±0.1 mV, Temp ±0.1 °C (electronic unit), ±0.3 °C (0.0–60.0 °C), ±1.0 °C (other ranges) |
| Calibration | 1–5 point pH auto-calibration with buffer recognition (GB, DIN, NIST, USA, MERK) and custom buffer support |
| Data Storage | 500 sets with time stamping, filtering, export via USB/RS-232, GLP-compliant audit trail |
| Display | 7-inch HD color LCD |
| Interface | RS-232 (printer compatible), USB-B (PC communication) |
| Power | AC 100–240 V input, DC 20 V output adapter |
| Dimensions | 242 × 195 × 68 mm |
| Weight | ~0.9 kg |
| IP Rating | IP54 |
| Compliance | GB/T 11165–2005, JJG 119–2018, HJ 1396–2024 |
| Brand | Leici |
|---|---|
| Model | PHSJ-5T |
| Measurement Range | (−2.00 to 20.00) pH |
| Resolution | 0.01 pH (selectable down to 0.001 pH) |
| Accuracy | ±0.001 pH |
| Temperature Compensation Range | (−5.0 to 105.0) °C |
| Dimensions | 240 mm × 180 mm × 78 mm |
| Weight | 1.5 kg |
| IP Rating | IP54 |
| Data Storage Capacity | 1000 datasets (pH, mV, ORP, temperature) |
| Compliance | GLP, GMP-ready, 21 CFR Part 11–compatible data management via optional software |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model | iSense |
| Compliance | Supports FDA 21 CFR Part 11, ISO 9001, GMP/GLP documentation requirements |
| Connectivity | USB interface for direct ISM® sensor communication |
| Function | Real-time electrode health monitoring, calibration history logging, predictive maintenance analytics |
| Software Architecture | Windows-based desktop application with centralized SQL database backend |
| Data Export | CSV, PDF, XML (audit-trail enabled) |
| License Type | Perpetual license with optional annual support & update subscription |
| Origin | Switzerland |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Import Status | Imported |
| Model | 780 Advanced |
| Pricing | Available Upon Request |
| Origin | Switzerland |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 744 |
| Pricing | Available Upon Request |
| Origin | Switzerland |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 826 |
| Pricing | Upon Request |
| Origin | Switzerland |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | 827 |
| Pricing | Upon Request |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | InPro 3250/3350 Series |
| Pricing | Available Upon Request |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model | InPro 3250 / InPro 3350 |
| Compliance | ISO 9001, IEC 61508 (SIL2 capable), ATEX/IECEx certified variants available |
| Smart Diagnostics | ISM® Intelligent Sensor Management |
| Output Signals | 4–20 mA, HART®, PROFIBUS PA, FOUNDATION Fieldbus, Modbus TCP |
| Enclosure Rating | IP66/IP67, NEMA 4X |
| Operating Temperature | –20 to +60 °C (ambient), up to 150 °C (process, depending on sensor variant) |
| Pressure Rating | Up to 10 bar (g), higher with custom housings |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model | InPro 4260 |
| Type | Industrial online pH electrode with open junction and polymer reference system |
| Reference System | XEROLYT® EXTRA polymer gel |
| Junction Type | Open junction (non-ceramic, non-porous) |
| Temperature Compensation | Integrated Pt100 or Pt1000 RTD available |
| Sterilization Compatibility | Autoclavable up to 135 °C, CIP/SIP compatible |
| Application Environment | High-protein, high-solids, sulfide-rich, viscous, and aggressive industrial process streams |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model Range | InPro 2000, InPro 2002, InPro 3x00, InPro 4x00, InPro 5x00, InPro 7x00 |
| Electrode Architecture | Combination pH/ORP sensor with integrated reference system |
| Intelligent Sensor Management (ISM) | Real-time electrode health monitoring including glass membrane impedance, reference junction resistance, response time, and service life estimation |
| Temperature Compensation | Integrated Pt1000 or Pt100 RTD |
| Process Connection | Standardized ¾" NPT, DIN 19213, or sanitary Tri-Clamp fittings |
| Pressure Rating | Up to 10 bar (varies by model) |
| Temperature Range | –10 °C to +130 °C (model-dependent) |
| Certifications | ATEX/IECEx Zone 1, FM Class I Div 1, SIL2 compliant per IEC 61508, FDA 21 CFR Part 11 ready (when paired with compatible transmitter) |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Model | InPro2000 / InPro2000i |
| pH Range | 0–14 |
| Temperature Range | 0–140 °C (32–284 °F) |
| Max. Pressure Rating | 6 bar (87 psi) |
| Junction | Ceramic |
| Reference System | Ag/AgCl with Silver Ion Trap |
| Sterilizable | Yes |
| ATEX Certification | Ex II 1/2G EEx ia IIc T6/T5/T4/T3, SNCH 00 ATEX 3130X FM Certified for Class I, II, III |