Mt20 Soil Moisture, Ec and Temperature Sensor

• Accuracy: ≤0.5°c
• Response Time: <1 S
• Power Supply Voltage: 5-30V/DC 12-30V/DC
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: MT20
• Current Output: 4-20mA
• Transport Package: Carton Box
• Specification: Soil Moisture and Temperature Sensor
• Trademark: BONAD
• Origin: Guang Dong, China
• Production Capacity: 1000PCS/Month
• Package Size: 37.00cm * 24.00cm * 18.00cm
• Package Gross Weight: 3.000kg

Product Description

MT20 (SDI-12 Interface)
Soil Moisture, EC and Temperature Sensor

 

MT20A:Soil Moisture, EC and Temperature Sensor

MT20B:Soil Moisture, Temperature Sensor
 

1.  Introduction

MT20 is a sensor with SDI-12 interface, measuring soil moisture content, temperature and EC, or soil moisture content and temperature regarding the order information. It sealed with resin packaged plastic body with sensing rods which can be insert directly into the soil with long time stability., The sensor is applicable for science research, irrigation, greenhouse, smart agriculture etc.
 Integrated with Soil Moisture, temperature or with EC measurement
 Output Interface SDI-12
 Low salinity sensitivity
 Minimal soil disturbance
 Water proof to IP68 ratings and can be directly buried into soil
 High accuracy with excellent stability
 Reverse power protection and Built-in TVS/ESD protection
 ODM/OEM Service
 

Specifications
Output Interface	SDI-12, V1.3
Power Supply	3.6-16V/DC
Power Consumption	Quiescent Current : 30uA Measuring Current : 10mA during 150ms measurement
Soil Moisture Measurement	Apparent dielectric permittivity : Range:1-81 (air - water) Resolution:1.00-40.00:±0.1,40.00-81.00:±0.5 Accuracy:1.00-40.00:±2%,40.00-81.00:±5% Soil Moisture(VWC): Range:0%-100% (air - water) Resolution:derived by the conversion function from epsilon to VWC Accuracy:derived by the conversion function from epsilon to VWC
EC Measurement	Range: 0-23ds/m Resolution: 0-7ds/m, 0.01ds/m; 7-23ds/m, 0.05ds/m Accuracy: 0-7ds/m, 5%; 7-23ds/m,15% EC temperature compensation: 0-50°C
Temperature Measurement	Range: -40~80°C, Resolution:0.1°C, Accuracy:±0.5°C
Measurement Technique	Moisture by FDR and EC by AC excitation
IP Ratings	IP68
Operating Temperature	-40~85°C
Sensor Rod	Stainless steel
Sensor Sealed	Epoxy resin
Installation	Surface or buried installation
Cable Length	5 meters or Customize
Dimension	88*71*26mm

 

2.Wiring diagrams

Type	Wiring diagram
SDI-12 Interface
Connections

3. Dimension and Ordering Infomation
3.1Dimension

3.2 Ordering Information

Parameters	Code	Comments
Code 1: Product Series	MT20	MT20 SDI-12 interface sensor
Code 2: Measuring Parameters	A B	Soil Moisture & Temperature & EC Soil Moisture & Temperature
Code 3: Soil Moisture Range	B	0-100%
Code 4: EC Range	C X	0-23ds/m No EC measurement(select this if do not need EC)
Code 5: Power Supply	B	3.6-16V DC
Code 6: Connector	A B C	3.5 mm stereo plug Cold pressed terminal Stripped & tinned lead wires
Code 7: Cable Length	005 XXX	5 meters Customize, XXX is required cable length(Unit: meter)
Ordering Code Example: MT20 SDI-12 interface sensor,Soil Moisture & Temperature & EC, Soil Moisture Range 100%, EC range 0-23ds/m, Power supply 3.6-16V DC,3.5 mm stereo plug, Cable length 5 meters. Ordering Code is : MT20 - A B C B A 005

4.Safty ,Care and Installation

4.1 Care and Safty

 The rods of the Sensor are sharp for ease insertion. Care must be taken and handling precautions followed.
 Avoid touching the rods or exposing them to other sources of static damage, particularly when powered up.
 Do not pull the sensor out of the soil by its cable.
 If you feel any resistance when inserting the sensor into soil, it is likely you have encountered a stone. Stop pushing and re-insert at a new location.

4.2 Installation

Surface installation
 Clear away any stones. Pre-form holes in very hard soils before insertion.
 Push the sensor into the soil until the rods are fully inserted. Ensure good soil contact.
 If you feel strong resistance when inserting the sensor, you have probably hit a stone. Stop, and re-insert at a new location.

Note: The sensor is suitable for soil surface temperature measurements.
Installing at depth
 Make a 45mm diameter hole, preferably at about 10° to the vertical using a auger.
 Push the sensor into the soil until rods are fully inserted. Ensure good soil contact.
 Fill and repack the hole with soil.

Alternatively
 Dig a trench, and install horizontally.





Packing and Delivery :
Packing: Carton
Delivery Time: 7~15 working days

 

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