PH transmitter
K3100P -The Cost-Effective Option for Plastic-Housed Electrodes in the Water Purification Industry
The sensitive membrane of the K3100P pH electrode is a low-impedance sensitive membrane, suitable for measuring general pure water, tap water, surface water, swimming pool water, circulating water, and other water purification media. It well balances the relationship between measurement accuracy, response time, and electrode lifespan, combining the advantages of laboratory-grade electrodes and industrial-grade electrodes into one.
| Measurement Range | 0 ~ 14 pH |
|---|---|
| Temperature Range | 0 ~ 80 °C |
| Pressure Resistance Range | 0 ~ 3 Bar |
| Temperature Compensation Type | Optional (NTC2.252K, NTC5K, NTC10K, NTC22K, NTC30K, PT100, PT1000, etc.) |
| Factory Slope | Better than 95% |
| Membrane Resistance | < 100 MΩ |
| Zero Potential | < 10 mV |
| Response Time | < 10 s |
| Salt Bridge Type | Annular PTFE |
| Reference Electrolyte | PCG polymer gel (low-viscosity standard type) |
| Reference Type | Long-path reference |
| Mounting Thread | Top and bottom 3/4 NPT pipe threads |
| Housing Material | ABS with glass fiber |
| Length | 180 mm |
| pH Sensitive Membrane | Low-impedance sensitive membrane (HL) |
| Cable Connection | Integrated direct connection type |
Features Overview
- The conductivity range of the applicable medium is 20–300 μS/cm.
- IP68 waterproof rating.
- Long-path reference for excellent long-term drift performance.
- Low-impedance sensitive membrane ensures accurate measurement and fast response speed.
- Dual threads enable direct installation in process applications.
Expansion Capability
- Housing material can be upgraded from ABS+glass fiber to PPS (Polyphenylene Sulfide).
- Long-path reference can be upgraded to double-junction reference.
- pH sensitive membrane can be customized to general-purpose type (HC).
- Cable length is extendable up to 60 m.
Applications
- Swimming pool water
- Circulating water
- Surface water
- Tap water
- Secondary water supply
- General pure water
K3100S-cost-effective and durable
The K3100S pH electrode is an enhanced version of the K3100 plastic-housed electrode. Its electrode bulb is precision-blown using imported machinery, offering exceptional durability — over ten times stronger than conventional lip-blown bulbs on the market. It supports full-range pH measurement (0–14 pH) and adopts a dual salt bridge design with a large-capacity reference system. These features ensure ultra-long service life and reliable performance even under harsh operating conditions.
| Measurement Range | 0 ~ 14 pH |
|---|---|
| Temperature Range | 0 ~ 80 °C |
| Pressure Resistance Range | 0 ~ 6 Bar |
| Temperature Compensation Type | Optional (NTC2.252K, NTC5K, NTC10K, NTC22K, NTC30K, PT100, PT1000, etc.) |
| Factory Slope | Better than 95% |
| Membrane Resistance | < 250 MΩ |
| Zero Potential | < 10 mV |
| Response Time | < 10 s |
| Salt Bridge Type | Annular PTFE |
| Reference Electrolyte | PCA polymer gel (pressure-resistant type) |
| Reference Type | Dual salt bridge reference |
| Mounting Thread | Top and bottom 3/4 NPT pipe threads |
| Housing Material | Nylon with glass fiber |
| Length | 160 mm |
| pH Sensitive Membrane | Acid and alkali resistant membrane (HA) |
| Cable Connection | Integrated direct connection type |
Features Overview
- The nylon-with-glass-fiber body offers strong chemical and temperature resistance.
- IP68 waterproof rating ensures reliable use in submerged applications.
- Excellent long-term drift performance with dual salt bridge reference design.
- Machine-blown thickened sensitive membrane enhances mechanical strength and impact resistance.
- Dual NPT3/4 threads enable direct installation in process pipelines.
Expansion Capability
- ABS with glass fiber can be upgraded to PPS (Polyphenylene Sulfide) material.
- Long-path reference can be upgraded to double-junction reference.
- pH sensitive membrane can be customized to low-impedance type (HL).
- Cable length is extendable up to 60 m.
Applications
- Domestic wastewater
- Industrial wastewater
- Agriculture
- Aquaculture
- Municipal water systems
- Water treatment equipment
K3100S-Robust and Durable Solution
The K3100S pH electrode is an enhanced version of the K3100 plastic-housed electrode. Its electrode bulb is precision-blown using imported machinery, offering exceptional durability — over ten times stronger than conventional lip-blown bulbs on the market. It supports full-range pH measurement (0–14 pH) and adopts a dual salt bridge design with a large-capacity reference system. These features ensure ultra-long service life and reliable performance even under harsh operating conditions.
| Measurement Range | 0 ~ 14 pH |
|---|---|
| Temperature Range | 0 ~ 80 °C |
| Pressure Resistance Range | 0 ~ 6 Bar |
| Temperature Compensation Type | Optional (NTC2.252K, NTC5K, NTC10K, NTC22K, NTC30K, PT100, PT1000, etc.) |
| Factory Slope | Better than 95% |
| Membrane Resistance | < 250 MΩ |
| Zero Potential | < 10 mV |
| Response Time | < 10 s |
| Salt Bridge Type | Annular PTFE |
| Reference Electrolyte | PCA polymer gel (pressure-resistant type) |
| Reference Type | Dual salt bridge reference |
| Mounting Thread | Top and bottom 3/4 NPT pipe threads |
| Housing Material | Nylon with glass fiber |
| Length | 160 mm |
| pH Sensitive Membrane | Acid and alkali resistant membrane (HA) |
| Cable Connection | Integrated direct connection type |
Features Overview
- The nylon-with-glass-fiber body offers strong chemical and temperature resistance.
- IP68 waterproof rating ensures reliable use in submerged applications.
- Excellent long-term drift performance with dual salt bridge reference design.
- Machine-blown thickened sensitive membrane enhances mechanical strength and impact resistance.
- Dual NPT3/4 threads enable direct installation in process pipelines.
Expansion Capability
- ABS with glass fiber can be upgraded to PPS (Polyphenylene Sulfide) material.
- Long-path reference can be upgraded to double-junction reference.
- pH sensitive membrane can be customized to low-impedance type (HL).
- Cable length is extendable up to 60 m.
Applications
- Domestic wastewater
- Industrial wastewater
- Agriculture
- Aquaculture
- Municipal water systems
- Water treatment equipment
K1300-pH/ORP Signal Transmission Module
The K1300 pH/ORP Signal Transmission Module integrates electronic circuits and microprocessors into a compact DIN rail-mounted housing. It supports analog pH and ORP electrodes with precise measurement, signal transmission, and communication functions — meeting a wide range of online pH or ORP monitoring needs. Designed for flexibility and reliability, the K1300 adapts seamlessly to harsh industrial environments while maintaining high accuracy and stability.
| Measurement Range | pH: 0 ~ 14.00 pH; ORP: -2000 ~ +2000 mV |
|---|---|
| Temperature Compensation Range | -10 ~ 130 °C |
| Resolution | pH: 0.01 pH; ORP: 1 mV |
| Temperature Compensation Type | NTC10K / PT1000 |
| Basic Error | pH: ≤ 0.02 pH; ORP: ±1 mV |
| Power Supply | 18 ~ 27 VDC |
| Stability | pH: ≤ 0.02 pH / 24h; ORP: ≤ 2 mV / 24h |
| Communication Output | RS485 Modbus RTU |
| Current Output | 4 ~ 20 mA (Load resistance < 500Ω); Accuracy: 0.01 mA |
| Dimensions | 103 (L) × 85 (H) × 23 (T) mm |
| Installation Method | DIN rail mounting (rail size: 33 mm) |
| Operating Environment | Temperature: -10 ~ 60 °C; Humidity ≤ 90% |
Features Overview
- RS-485 transmission interface with MODBUS-RTU communication protocol, supporting two-way communication.
- Power supply and output isolation design ensures electrical safety.
- Built-in protection circuit enhances anti-interference capability for complex environments.
- Simple and user-friendly communication protocol with extended electrode diagnostic data output.
- Low-power design with internal memory that stores calibration and settings during power loss.
- Industrial DIN rail mounting simplifies on-site installation and system integration.
- Supports on-site pH calibration via internal buttons or optional hand-held operator for maintenance.
Applications
- Thermal Power Plants
- Chemical Industry
- Chemical Fertilizer Production
- Desulfurization & Denitrification Systems
- Surface Treatment
- Metallurgy
- Environmental Protection
- Pharmaceutical Industry
- Biochemical Industry
- Food & Beverage Industry
- Tap Water Supply
- Textile Dyeing & Printing
K-PH5000-pH/ORP Transmitter
The K-PH5000 pH/ORP Transmitter adopts a miniaturized design and can be used with analog pH or ORP electrodes. It integrates measurement, display, signal transmission, alarm, and communication functions, flexibly meeting various online pH or ORP monitoring needs. Equipped with a high-definition LCD screen and an intelligent menu with switchable Chinese and English, it provides simple and user-friendly operation while adapting to harsh industrial environments.
| Screen Parameters | 2.8-inch high-definition monochrome screen (320 × 240) |
|---|---|
| Measurement Range | pH: 0 ~ 14.00 pH; ORP: -2000 ~ +2000 mV |
| Resolution | pH: 0.01 pH; ORP: 1 mV |
| Basic Error | pH: 0.02 pH; ORP: 1 mV |
| Temperature Compensation Range | -20 ~ 150 °C (Automatic/Manual) |
| Temperature Compensation Type | NTC10k / PT100 / PT1000; NTC22k / NTC2.252k |
| Stability | pH: < 0.02 pH / 24 h; ORP: < 2 mV / 24 h |
| Current Output | 4 ~ 20 mA (load resistance < 500 Ω); Accuracy 0.2% |
| Communication Output | RS-485 Modbus RTU |
| Relay Control Contacts | Two groups (3 A 250 VAC / 3 A 30 V DC) |
| Power Supply (Optional) | 220 VAC ± 10%; 24 V DC |
| Dimensions | 113.5 (L) × 118 (H) × 136 (T) mm |
| Installation Method | Panel-mounted / Pipeline-mounted / Wall-mounted |
| Mounting Hole Dimensions | 92 × 92 mm |
| Operating Environment | -10 ~ 60 °C; Relative humidity ≤ 90% |
| Protection Rating | IP67 |
Features Overview
- High-definition large screen display for easy data reading and operation.
- Software digital filtering with strong anti-interference capability.
- Intelligent calibration technology automatically identifies calibration points.
- IP67 protection rating ensures stable 24/7 operation.
- Supports tag input and multiple parameter correction functions.
Applications
- Thermal Power Plants
- Chemical Industry
- Chemical Fertilizer Production
- Textile Dyeing & Printing
- Desulfurization & Denitrification Systems
- Surface Treatment
- Metallurgy
- Environmental Protection
- Pharmaceutical Industry
- Biochemical Industry