Gravity: Analog pH Sensor / Meter Pro Kit For Arduino is a professional Arduino pH Sensor Meter Kit with an industrial electrode. The industrial ph sensor for Arduino has a built-in simple, convenient, practical connection and long life (up to 1 year), which makes it very suitable for long-term online monitoring. It has an LED that works as the Power Indicator, a BNC connector, and a PH2.0 sensor interface.

This industrial pH electrode is made of a sensitive glass membrane with low impedance. It can be used in a variety of PH measurements with fast response and excellent thermal stability. It has good reproducibility, is difficult to hydrolysis, and can eliminate basic alkali errors. In 0pH to 14pH range, the output voltage is linear. The reference system which consists of the Ag/AgCl gel electrolyte salt bridge has a stable half-cell potential and excellent anti-pollution performance. The ring PTFE membrane is not easy to be clogged, so the electrode is suitable for long-term online detection.

Applications:

Features:

1. Industry pH Electrode with BNC Connector
2. PH2.0 Interface (3-foot patch )
3. Gain Adjustment Potentiometer
4. Power Indicator LED

Specifications:

1. Module Power: 5.00V
2. Module Size : 43mm x 32mm（1.70″x1.26″)
3. Measuring Range:0-14PH
4. Measuring Temperature:0-60 ℃
5. Accuracy : ± 0.1pH (25 ℃)
6. Response Time: ≤ 1min

Package Includes:

1 x DFRobot Gravity Industrial Grade Analog pH Sensor

A cable Float Switch is a control device for automatic On/Off pumps, motors,s and magnetic valves. It is also an alarm device at certain pre-determined surface levels. It is suitable for use in non-flammable liquids at 250 volts. In potentially explosive atmospheres (e.g. oil tanks) the Switch can be used in conjunction with (Ex) I-isolator switch units. Due to its large float casing, the float Switch has a buoyancy that guarantees smooth, trouble-free operation under all conditions. The switch has a double chamber and a final remolding finish to make it absolutely hermetic.

Features: 

1. It can test the pressure of the liquid
2. The float switch is a switch that regulates fluid level in the tank or well etc
3. The float switch is resistant to water(sewage water) it is relatively capable of being used for oil, most acids and alkalis
4. The float switch is not explosion-proof

Package Includes:

1 x Square 6M Float Switch For Industry Pump Tank Sensor

You can stop worrying when you use automatic ST-70AB liquid level control switch ST-70AB control water pump switch power than normal
control switch. Is safe and free short-circuits or burn – out problems.

ST70AB is use for control water inflow or outflow, this switch is suitable for both household and industrial  use, easy to install, low electricity consumption. safe and reasonably priced.

Features:

1. Double circuits: Such a switch has two circuits of A.B. The A terminal is used for water supply and the B terminal is used for pumping water.
2. High accurate: Solid float ball is immersed in water, the center of gravity is stable, which does not float on the water surface, and it has high accuracy.
3. Easy installations: Base is equipped with 3/4 inch and 1inch two-section screw-toothed conduits directly, with L-type bracket for flat mounting.
4. CONVENIENT TO USE: Meanwhile, the double float ball water level switch has excellent performance and is easy to use.
5. Durable: The switch is sealed by the housing, completely moisture-proof, and it maintains precise performance and extends switch life.
6. Voltage: 220V
7. Material: Plastic
8. Model no: ST-70AB
9. Cable: 1.2M

Packages Includes:

1 x 70AB Float Switch Water Level Controller

Features:

1. Power supply: +5V
2. Working current: 25μA
3. Working temperature: -25~125℃
4. Detectable wall thickness: 1~3mm
5. Dimension(mm ± 1): 16.5 x 8.5 x 5.5 (Not include the cushion on the sensor)
6. Cable length: 30cm ± 1cm

Packages Includes:

1 x DFRobot Gravity: Capacitive Non-contact Liquid Level Sensor (3mm TR)

Gravity: Analog TDS Sensor/Meter for Arduino is an Arduino-compatible TDS Meter Kit for measuring TDS value of the water, to reflect the cleanliness of the water. TDS meter can be applied to domestic water, hydroponic and other fields of water quality testing. You may also check Liquid Senser Selection Guide to get better familiar with our liquid sensor series.

TDS (Total Dissolved Solids) indicates that how many milligrams of soluble solids dissolved in one liter of water. In general, the higher the TDS value, the more soluble solids dissolved in water, and the less clean the water is. Therefore, the TDS value can be used as one of the references for reflecting the cleanliness of water.

TDS pen is widely used equipment to measure TDS value. The price is affordable, and it is easy to use, but it is not able to transmit data to the control system for online monitoring to do some water quality analysis. The professional instrument has high accuracy and can send data to the control system, but the price is expensive for ordinary people. To this end, we have launched an analog TDS sensor kit that is compatible with Arduino, plug, and play, easy to use. Matching with Arduino controller, you can build a TDS detector easily to measure the TDS value of liquid.
This tds sensor supports 3.3 ~ 5.5V wide voltage input, and 0 ~ 2.3V analog voltage output, which makes it compatible with a 5V or 3.3V control system or board. The excitation source is an AC signal, which can effectively prevent the probe from polarization and prolong the life of the probe, meanwhile, increase the stability of the output signal. The TDS probe is waterproof, it can be immersed in water for a long time measurement.

Features:

Specifications: