Online Conductivity Meter
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| Brand | Apure |
|---|---|
| Model | A10CD-A / A10CD-S |
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Measurement Range | 0.05 µS/cm – 200 mS/cm |
| Resistivity Range | 0.00 – 20.00 MΩ·cm |
| Temperature Range | 0–60 °C |
| Resolution | 0.01 µS/cm |
| Output | Dual isolated 4–20 mA (conductivity/resistivity & temperature) |
| Relay Outputs | 2 programmable SPDT relays (3 A / 250 V AC, NO contact) |
| Power Supply | AC 220 V or DC 24 V |
| Power Consumption | ≤5 W |
| Enclosure Dimensions | 96 × 96 × 132 mm (H × W × D) |
| Panel Cutout | 92.5 × 92.5 mm |
| Temperature Compensation | Automatic (PT1000 or NTC10K) or Manual |
| Display Language | Switchable between Chinese and English |
| Environmental Rating | 0–60 °C ambient, ≤85% RH non-condensing |
| Brand | APURE |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | A10CD-AA1 |
| Conductivity Range | 0.05 µS/cm – 200 mS/cm |
| Resistivity Range | 0.00 – 20.00 MΩ·cm |
| Temperature Range | 0–100 °C (manual or automatic with PT1000/NTC10K sensor) |
| Basic Accuracy | ±0.01 µS/cm |
| Resolution | 0.01 µS/cm |
| Dimensions | 96 × 96 × 132 mm (H×W×D) |
| Power Supply | AC 220 V or DC 24 V |
| Power Consumption | ≤5 W |
| Operating Environment | 0–60 °C, ≤85% RH |
| Output | Dual isolated 4–20 mA (conductivity/resistivity + temperature) |
| Relay Outputs | 2 programmable SPDT relays (3 A / 250 V AC, NO contact) |
| Enclosure Rating | IP65 front panel |
| Mounting Cutout | 92.5 × 92.5 mm |
| Brand | Apure |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | OEM Manufacturer |
| Model | A20CD-AA1 |
| Conductivity Range | 0.05 µS/cm – 200 mS/cm |
| Resistivity Range | 0.00 – 20.00 MΩ·cm |
| Temperature Range | −30 °C to +150 °C (manual or automatic with PT1000/NTC10K sensor) |
| Basic Accuracy | ±0.01 µS/cm |
| Resolution | 0.01 µS/cm |
| Dimensions | 144 mm (H) × 144 mm (W) × 115 mm (D) |
| Power Supply | AC 220 V or DC 24 V |
| Power Consumption | ≤5 W |
| Environmental Operating Conditions | 0–60 °C, ≤85% RH (non-condensing) |
| Mounting Cutout | 138 mm × 138 mm |
| Analog Outputs | Two isolated 4–20 mA outputs (conductivity/resistivity and temperature, max. load 500 Ω) |
| Relay Outputs | Two SPDT relays (3 A / 250 V AC, NO contact), configurable for high/low alarm with adjustable hysteresis |
| Display Language | Switchable between Chinese and English |
| Password Protection | User-accessible configuration lock |
| Menu Navigation | Context-sensitive on-screen prompts |
| Brand | APURE |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | A30CD-AA1 |
| Conductivity Range | 0.05 µS/cm – 200 mS/cm |
| Resistivity Range | 0.00 – 20.00 MΩ·cm |
| Temperature Range | 0–100 °C |
| Basic Accuracy | ±0.01 µS/cm |
| Resolution | 0.01 µS/cm |
| Dimensions (H×W×D) | 48 × 96 × 110 mm |
| Mounting Cutout | 42 × 90 mm |
| Output | Isolated 4–20 mA (configurable for conductivity, resistivity, or temperature) |
| Relay Output | 1 × SPDT, 3 A / 250 V AC, programmable high/low alarm with adjustable hysteresis |
| Power Supply | AC 220 V ±10% or DC 24 V ±10% |
| Power Consumption | ≤15 W |
| Operating Environment | 0–60 °C, ≤85% RH (non-condensing) |
| Brand | CMC |
|---|---|
| Origin | Germany |
| Model | OilQSens |
| Conductivity Range | 0.1–20,000 pS/m (Transformer Grade: 0.1–50 pS/m) |
| Dielectric Constant Range | 1.0–5.0 |
| Temperature Range | −10 °C to +70 °C |
| Sensitivity | 0.01 pS/m (conductivity), 1×10⁻⁶ (dielectric constant) |
| Accuracy | ±1% of reading ±0.5 pS/m (conductivity), ±1% ±0.0001 (dielectric constant) |
| Response Time | <45 s |
| Max Process Pressure | 60 barg @ 20 °C |
| Sensor Material | Stainless steel flow cell & fittings, aluminum sensor head |
| Communication Interfaces | RS232, LAN, WLAN, RS485, Profibus, Modbus, GSM (optional) |
| Power Supply | 90–264 VAC / 50–60 Hz or 24 VDC (optional) |
| Dimensions & Weight | Sensor: Ø70 × H103 mm, 2.70 kg |
| Communication Module | 87 × 110 × 30 mm, 0.25 kg |
| Control Unit | 210 × 250 × 165 mm, 4.45 kg |
| Software | WSens (optional) |
| Brand | DoctorWater |
|---|---|
| Model | Dr-W390 |
| Measurement Parameters | pH (0–14), Residual Chlorine (0–2 / 0–20 mg/L), Dissolved Oxygen (0–20 mg/L), Conductivity (0–2000 / 0–20000 µS/cm), Temperature (0–60 °C) |
| Conductivity Range | 0–2000 µS/cm, 0–20000 µS/cm |
| Temp. Range | 0–60 °C |
| Accuracy | ±2% F.S. (all parameters) |
| Conductivity Resolution | 0.01 µS/cm |
| Temp. Compensation | Automatic |
| Data Storage | 500,000 records |
| Output | Dual 4–20 mA (±0.05 mA accuracy), RS485 Modbus RTU |
| Relay Outputs | 1 multifunctional relay (cleaning/interval/error alarm), 2 controllable relays with adjustable delay |
| Update Interval | 1–60 s adjustable |
| Enclosure Rating | IP68 (electrode), IP65 (controller) |
| Max. Pressure Rating | up to 4 bar (conductivity sensor) |
| Cable Length | 5 m standard (customizable) |
| Brand | EMCEE |
|---|---|
| Origin | USA |
| Model | 1153 |
| Conductivity Range | 0–2000 pS/m |
| Accuracy | ±2% of reading |
| Resolution | ±1 pS/m (0–2000 pS/m) |
| Dimensions | 200.7 mm × 70 mm × 43.2 mm (L×W×D) |
| Operating Temperature | 0–50 °C |
| Power Supply | Three 3 V lithium batteries |
| Intrinsic Safety Certification | Class I, Division 1, Group D |
| Display | 5-digit LCD with status text |
| Probe Diameter | 19.05 mm |
| Weight | 365.8 g |
| Enclosure | Solvent-resistant rigid plastic carrying case |
| Key | Brand: Onset |
|---|---|
| Model | U26 |
| Sensor Type | Optical (Dynamic Fluorescence Quenching) |
| DO Range | 0–30 mg/L |
| Calibration Range | 0–20 mg/L |
| Accuracy | ±0.2 mg/L (0–8 mg/L), ±0.5 mg/L (8–20 mg/L) |
| Resolution | 0.02 mg/L |
| Response Time (t₉₀) | <2 min |
| Temperature Range | −5 to 40 °C |
| Temp Accuracy | ±0.2 °C |
| Temp Resolution | 0.02 °C |
| Memory | 64 KB (21,700 readings) |
| Logging Interval | 1 min – 18 hr |
| Battery Life | Up to 6 months typical |
| Depth Rating | ≤100 m |
| Dimensions | Ø3.96 cm × 26.67 cm |
| Weight | 464 g |
| Power | 3.6 V lithium battery |
| Brand | JENSPRIMA |
|---|---|
| Origin | Shanghai, China |
| Model | innoCon 6500C |
| Conductivity Range | 0.00–20.00 / 200.0 / 2000 µS/cm, 0.00–20.00 / 200.0 / 2000 mS/cm |
| Resistivity Range | 0.00–20.00 MΩ·cm |
| TDS Range | 0.00 ppm–200.0 ppt |
| Resolution | 0.01/0.1/1 µS/cm, 0.1/1 mS/cm, 0.01 MΩ·cm, 0.01/0.1/1 ppm, 0.1 ppt |
| Accuracy | ±1% FS |
| Temperature Sensor | Pt1000 |
| Temp. Compensation | Automatic (with ±10.0 °C offset adjustment) or Manual |
| Operating Temp. | −10.0 to +60.0 °C |
| Humidity | 10–90% RH (non-condensing) |
| Display | Backlit LCD (44×65 mm), yellow backlight |
| Power Supply | 90–260 VAC, 50/60 Hz |
| Outputs | Two isolated 4–20 mA analog outputs (configurable, max. 600 Ω load) |
| Relay Outputs | Two independent SPST relays (Hi/Lo alarm, hysteresis adjustable |
| Enclosure Rating | IP54 |
| Mounting | Panel mount (cutout: 92×92 mm) |
| Dimensions | 96×96×130 mm |
| Weight | 0.45 kg |
| Brand | KC Starlight |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Direct Manufacturer |
| Model | XG-010 |
| Conductivity Range (� | S/cm): K=0.01 cm⁻¹: 0.000–2.000 & 0.00–20.00 μS/cm |
| K=0.10 cm⁻¹ | 0.00–20.00 & 0.0–200.0 μS/cm |
| K=1.00 cm⁻¹ | 0.0–200.0 & 0–2000 μS/cm |
| K=10.0 cm⁻¹ | 0–2000 & 0–20000 μS/cm |
| Temperature Range | 5–60 °C |
| Basic Accuracy | ±2.5% F.S. |
| Resolution | 0.001 μS/cm |
| Dimensions | 145 mm × 120 mm × 145 mm (L×D×H) |
| Weight | 0.63 kg |
| Brand | Knick |
|---|---|
| Origin | Germany |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Origin | Imported |
| Model | SE610 |
| Pricing | Available Upon Request |
| Brand | Knick |
|---|---|
| Origin | Germany |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Origin | Imported |
| Model | SE670 |
| Pricing | Available Upon Request |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DCG-760A |
| Price Range | USD 850–1,420 (FOB) |
| Conductivity Range | 0–1000 mS/cm |
| Temperature Range | −10.0 to 120.0 °C |
| Basic Instrument Error | ±2.0% FS (Conductivity), ±0.3% HCl/NaOH (Concentration), ±0.5 °C (Temp, 0–60 °C) |
| Dimensions | 144 × 144 × 160 mm |
| Weight | ~2 kg |
| IP Rating | IP65 |
| Output | Isolated 4–20 mA DC (configurable span) |
| Temp Compensation | Automatic, 5.0–45.0 °C (ref. 25.0 °C) |
| Resolution | 0.1% (conc.), 0.1/1 mS/cm (cond.), 0.1 °C (temp) |
| Repeatability | ±0.1% HCl/NaOH |
| Drift Stability | ±0.1%/24h (conc.), ±0.5% FS/24h (cond.) |
| Brand | Leichi |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | DDG-33 |
| Price | USD 780 (FOB Shanghai) |
| Conductivity Range | K=0.01 cm⁻¹: 0–20 µS/cm |
| K=0.1 cm⁻¹ | 1–200 µS/cm |
| K=1.0 cm⁻¹ | 10–10,000 µS/cm |
| Temperature Range | −10.0 to 120.0 °C |
| Basic Instrument Error | ±2.0% FS (conductivity), ±0.5 °C (0.0–60.0 °C), ±1.0 °C (other) |
| Resolution | 0.001/0.01/0.1 µS/cm |
| Repeatability | 1.0% FS |
| Electronic Unit Accuracy | ±1.0% FS (conductivity), ±0.3 °C (temperature) |
| Stability | ±0.5% FS/24 h |
| Temperature Compensation Range | 5.0–60.0 °C (reference 25.0 °C) |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% or DC 24 V |
| Dimensions | 166 × 166 × 110 mm |
| Weight | 2.0 kg |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer | Leici (Shanghai Inesa Scientific Instrument Co., Ltd.) |
| Type | DDG-35 |
| Conductivity Range | 0.0 µS/cm to 200 mS/cm |
| Resistivity Range | 5.00 Ω·cm to 20 MΩ·cm |
| TDS Range | 0.0 mg/L to 100 g/L |
| Salinity Range | 0.00–8.00 % |
| Temperature Range | −10.0 to 120.0 °C |
| Basic Instrument Error | ±2.0 % FS (Conductivity) |
| Temperature Error | ±0.5 °C (0.0–60.0 °C), ±1.0 °C (other ranges) |
| Conductivity Resolution | 0.001 µS/cm (selectable: 0.001 / 0.01 / 0.1 / 1 µS/cm) |
| Temperature Resolution | 0.1 °C |
| Repeatability | 1.0 % FS (instrument), 0.3 % FS (electronic unit) |
| Auto-Temperature Compensation Range | −10 to 120 °C |
| Temp. Coefficient Adjustment | 0.0–10.0 %/°C |
| Output Signals | Isolated 4–20 mA DC (configurable span), Isolated RS-485 (Modbus RTU) |
| Enclosure Rating | IP65 |
| Dimensions | 166 × 166 × 110 mm |
| Weight | 2 kg |
| Standard Sensor Cable Length | 10 m |
| Mounting Cutout | 140 × 140 mm |
| Power Supply | AC 220 V ±10 %, 50 Hz ±1 % |
| Conductivity Range | 0.0 µS/cm to 200 mS/cm |
|---|---|
| Temperature Range | −10.0 to 120.0 °C |
| Accuracy | ±2.0% FS (instrument) |
| Resolution | 0.001 µS/cm (selectable: 0.001 / 0.01 / 0.1 / 1 µS/cm) |
| Dimensions | 166 × 166 × 110 mm |
| Weight | 2 kg |
| IP Rating | IP65 |
| Output | Isolated 4–20 mA DC & RS-485 |
| Sensor Cable Length | 10 m (standard) |
| Auto-Temperature Compensation | −10 to 120 °C |
| Electrode Compatibility | 2-electrode and 4-electrode conductivity cells |
| Data Storage Capacity | 2000 records |
| Brand | Leici |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Category | Domestic Industrial Instrument |
| Model | DDG-5205A |
| Price Range | USD 850–1,420 (FOB Shanghai) |
| Conductivity Range | 0.000 µS/cm to 10.0 mS/cm (dependent on cell constant: K=0.01 cm⁻¹: 0–20 µS/cm |
| K=0.1 cm⁻¹ | 1–200 µS/cm |
| K=1.0 cm⁻¹ | 10–10,000 µS/cm) |
| Temperature Range | −10.0 to 120.0 °C |
| Temperature Compensation Range | 5.0 to 60.0 °C (reference temp: 25.0 °C) |
| Conductivity Resolution | 0.001 / 0.01 / 0.1 / 1 µS/cm (auto-ranging) |
| Temperature Resolution | 0.1 °C |
| Basic Error | ±2.0% FS (conductivity), ±0.5 °C (0.0–60.0 °C), ±1.0 °C (outside range) |
| Repeatability | 1.0% FS |
| Electronic Unit Accuracy | ±1.0% FS (conductivity), ±0.3 °C (temperature) |
| Drift Stability | ±0.5% FS/24 h |
| Enclosure Rating | IP65 |
| Power Supply | AC 220 V ±10%, 50 Hz ±1% or DC 24 V ±15% |
| Dimensions | 166 × 166 × 110 mm |
| Weight | ~2.0 kg |
| Data Storage | 400 records with configurable logging interval |
| Output | Isolated 4–20 mA DC (user-defined upper/lower limits) |
| Digital Interface | RS-232 or RS-485 (selectable) |
| Auto-Cleaning Support | Yes |
| Alarm Functions | Programmable high/low limit alerts with relay output |
| Power Failure Protection | Non-volatile memory retention |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | Switzerland |
| Product Line | InPro5000i (for bioprocessing & cell culture), InPro5500i (for beverage carbonation) |
| Measurement Principle | Severinghaus-type electrochemical membrane sensor with temperature-compensated pH-based detection |
| Output Signal | 4–20 mA, HART, or digital ISM interface |
| Pressure Rating | Up to 10 bar (g) |
| Process Temperature Range | 0–50 °C |
| Materials of Construction | PPSU body, PTFE/PFA membranes, FDA-compliant wetted parts |
| Certifications | ATEX/IECEx Zone 1, SIL2 compliant, cGMP-ready design |
| Smart Features | ISM (Intelligent Sensor Management) with diagnostic logging, lifetime calibration tracking, and predictive maintenance alerts |
| Brand | METTLER TOLEDO |
|---|---|
| Origin | USA |
| Model | InPro7250 Series |
| Sensor Principle | Toroidal (Electrodeless) Induction |
| Measurement Parameters | Conductivity, Resistivity, Salinity (TDS-derived), Temperature |
| Output Protocols | HART, PROFIBUS PA, FOUNDATION Fieldbus |
| Enclosure Rating | IP66/IP67, ATEX/IECEx Certified Options Available |
| Channel Configuration | Single- or Dual-Channel Transmitter Options |
| Compliance | FDA 21 CFR Part 11 (with ISM software), ASTM D1125, ISO 7888, USP <645>, EP 2.2.38 |
| Brand | Shimadzu |
|---|---|
| Origin | Japan |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Product Origin | Imported |
| Model | TOC-1000e |
| Price Range | USD 150–1,500 (FOB Japan) |
| Brand | WTW |
|---|---|
| Origin | Germany |
| Model | TetraCon® 700 IQ |
| Measurement Principle | Four-Electrode Conductivity |
| Conductivity Range | 10 µS/cm to 500 mS/cm (up to 1000 mS/cm for SW variant) |
| Resolution | 0.01 µS/cm |
| Salinity Range | 0–70 PSU |
| TDS Range | 0–2000 mg/L |
| Response Time (t₉₀) | <60 s |
| Electrode Constant | Adjustable 0.826–1.008 cm⁻¹ (default K = 0.917 cm⁻¹ in free solution |
| Temperature Compensation | Integrated, -5 °C to +60 °C |
| Max. Pressure Rating | 10 bar (20 °C) |
| Accuracy | ±2% of reading (conductivity), ±0.1–0.2 PSU (salinity, depending on temperature range) |
| Brand | ZEDO |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | OEM/ODM Manufacturer |
| Product Category | Industrial Ultrasonic Humidifier |
| Model | ZS-40Z |
| Humidification Capacity | 12 kg/h |
| Power Consumption | 1200 W |
| Control Mode | Automatic Humidity Feedback Control (RH Setpoint) |
| 雾化方� | �: Single-Tube Ultrasonic Atomization |
| Enclosure Material | Full Stainless Steel (304) |
| IP Rating | IP68 (Power Supply & Fan) |
| 雾化片 | Alumina Ceramic Transducer (3000–5000 h Lifetime) |
| Sensor | SUGINO (Japan) High-Accuracy Capacitive RH Sensor (±2% RH, 10–90% RH Range) |
| Certifications | CE-marked, RoHS-compliant |
| Warranty | 12 months parts and labor |