Soil water potential measuring instrument

Gypsum block GBSoil water potential measuring instrument

Gypsum block GBSoil water potential measuring instrumentComposed of soil water potential sensors and data recorders, it is a small, three channel, waterproof data recorder designed specifically for soil water potential measurement. It is equipped with excellent non-volatile memory that can store up to 100000 readings, sufficient to meet data storage needs for over 1.5 years (measured once per hour). The recorder adopts infrared wireless data access technology, which facilitates data transmission and acquisition. Its waterproof casing is made of high-density polyethylene terephthalate (PETE), ensuring that the instrument can be buried in soil for a long time. The MicroLog SP3 soil water potential sensor not only has high-precision temperature measurement capabilities, but is also compatible with various soil water potential sensors, such as Delmhorst gypsum block sensors and Watermark sensors, making it an ideal tool for agricultural research, environmental monitoring, and other fields.

TensioMark TM F

• Absorb or release water from the soil until its moisture content reaches equilibrium with the soil moisture content

• For irrigation purposes, it is an important amount of water that plant roots can extract from the soil, not just the volumetric moisture content

Key Features:

• MicroLog SP3, a small data logger with three soil water potential sensors

• SWP is measured by Delmhorst gypsum blocks or Watermark sensors

• Built in data logger temperature sensor

• Low maintenance cost, easy to install and set up

• Large recording capacity and long battery life

• Infrared wireless data access

• Mini32 software support

Technical Specifications:

• Memory size:256kB，Non volatile memory, typically capable of storing 100000 readings

• Measurement range:0 - 35 kOhm（0 - –1.44 MPa）

• Resolution:16 bits

• Measurement interval:10min-4h

• Measure the memory capacity at 1-hour intervals:About 1.5 years

• Measure battery life at 1-hour intervals:About 2 years

• Overall accuracy:More than 2%

• Internal temperature accuracy:±0.3 ℃

• Protection level:IP68

• Data logger size :70 x 52 mm (including connector)

• Weight:110g (including battery)

• Operating Temperature-40 to 60 ° C

• Working humidity:0 - 100%

MicroLog SP3 Data Recorder

• Measurement range:0 - 35 kOhm（0 - –1.44 MPa）

• Accuracy:More than 0.5%

• Measure signal frequency:160 Hz

• Measure current:33 μA

• Measure signal waveform:Square wave, symmetrical

• Clock accuracy (-10 to 40 ° C):More than ± 15 seconds/month

• Memory capacity:256kB

• Resolution:16 bits

• Measurement interval:10min-4h

• Storage interval:10min-4h

• Measure the memory capacity at 1-hour intervals:About 1.5 years

• Measure battery life at 1-hour intervals:About 2 years

• Internal temperature accuracy:±0.3 ℃

• Sensor connection:2-pin Switchcraft EN3 P2 connector (female)

• Standard sensor length:1.5 meters (Watermark), 1.8 meters or 7.6 meters (Delmhorst)

• size :70 x 52 mm (including connector)

• Weight:110g (including battery)

• Operating Temperature-40 to 60 ° C

• Working humidity:0 - 100%

Soil water potential sensor Delmhorst GB1/GB2

• output：resistance

• Measurement range:−0.1 - −15 bar

• Protection level：IP67

• Standard cable length:1.8 m； 7.6 m

• Working environment temperature:–40 - 60 °C

• Working environment humidity ：0 -100%

Soil water potential sensor Watermark

• output：resistance

• Measurement range:−0.1 - −2.39 bar

• Protection level：IP67

• Standard cable length:1.5 m； 4.5 m

• Working environment temperature:–40 - 60 °C

• Working environment humidity ：0 -100%

Mini32 software

• Graphic software for processing long time series

• Quickly calculate hourly, daily, and monthly values

• Quick and brief statistics

• Built in efficient commands for summing minimum maximum average calculations

Demhorst Conversion Diagram