Low price ESMSMS-200 Soil Temperature Moisture and pH sensor Tester
PRODUCT DESCRIPTION
Based on the potentiometric method in electrochemistry, pH is estimated by measuring the potential difference generated by the activity of hydrogen ions in the soil solution. The instrument is equipped with a combined pH electrode, where the glass electrode bulb undergoes ion exchange with hydrogen ions in the soil to generate a membrane potential difference, while the reference electrode provides a stable reference potential, forming a closed circuit. A built-in high-impedance amplifier amplifies the weak potential signal, which is then converted into a digital signal by an A/D converter. The microprocessor calculates the pH value based on calibration parameters and displays it on the screen.
Product Features
1. Simple power supply, purely battery-powered
Powered by dry batteries (AA/AAA) or small lithium batteries, no external power or wiring needed, easy to replace or recharge, suitable for off-grid outdoor environments.
2. Compact structure, portable and easy to use
Handheld / pen-style design, lightweight and small in size, can be carried on the body or kept in a vehicle, operable with one hand.
3. Extremely simple operation, measure immediately after powering on
No complex menus, no reagents, no complicated pre-treatment required; probe can be inserted into the soil for reading in seconds, easy for elderly or temporary workers to use.
4. Complete core basic parameters
Generally measures: soil moisture, temperature, pH value, electrical conductivity (EC / salinity), meeting daily soil rapid testing needs.
5. Low power consumption, long-lasting battery life
Standby power consumption is extremely low; a set of batteries can last from several months to 1–2 years, suitable for long-term standby and occasional testing.
6. Durable and rugged, good protection
Probe made of stainless steel, body has certain waterproof and drop-resistant capabilities, suitable for rough field and outdoor environments.
7. Low cost, high cost-performance ratio
Affordable price, low purchase and maintenance costs, low risk if damaged or lost, suitable for bulk standby.
8. Automatic shutdown / power-saving design
Supports idle automatic shutdown and low battery reminders, reducing accidental power consumption and extending battery life.
application scenarios
5.1. Agricultural Emergency Inspection
Quick on-site assessment of soil moisture and pH in farmlands, orchards, and vegetable fields when drought, waterlogging, or salinization is suspected.
2. Use by grassroots agricultural technicians and small farmers
Routine simple soil testing by township agricultural stations, cooperatives, family farms, and individual growers to guide irrigation and fertilization.
3. Emergency backup and tool integration
Serves as an auxiliary instrument for agricultural machinery, irrigation equipment, and plant protection toolkits, providing rapid replacement testing when the main equipment fails.
4. Landscaping and municipal maintenance
Rapid detection of soil moisture and pH in lawns, saplings, and green spaces to guide watering and soil improvement.
5. Field survey and simple environmental investigation
Quick on-site assessment of mountainous, wasteland, or reclaimed plots without the need for laboratory conditions to preliminarily evaluate soil status.
6. Simple monitoring in greenhouses
Occasional checks of soil moisture and salinity to prevent salinization, root rot, and drought problems.
7. Education, science popularization, and simple experiments
Used for campus agricultural practice, science exhibitions, and small-scale soil comparison experiments.
PRODUCT SPECIFICATIONS
| Power supply mode | DC 3.7V lithium battery | |
| Battery life | Standard battery 4000mAh, lasts more than 3 years | |
| Temperature parameters | Range | -40℃~80℃ |
| Resolution | 0.1℃ | |
| Accuracy | ±0.5℃（25℃） | |
| Moisture parameters | Range | 0-100% |
| Resolution | 0.1% | |
| Accuracy | ±2% within 0-50%, (brown soil, 30%, 25°C) ±3% within 50-100%, (brown soil, 60%, 25°C) | |
| Conductivity parameters | Range | 0-10000us/cm |
| Resolution | 1us/cm | |
| Accuracy | ±3°C (brown soil, 60%, 25°C) | |
| Response time | ＜1s | |
| Operating temperature | -20℃~60℃ | |
| Protection level | IP68 | |
Product detail
