253-L
253-L
RetiredConfigurableSoil Matric Potential Block for Multiplexer Use
Low-cost analog resistance for matric potential measurements. Requires the use of a multiplexer; cannot be wired directly to a data logger.
Pricing
Configuration
Sign in for option pricing- 253-L Watermark Soil Matric Potential Block for Multiplexer Use253-L
- 253-L45 Watermark Soil Matric Potential Block for Multiplexer Use 45ft cable per sensor253-L45
- 253-L15 Watermark Soil Matric Potential Block for Multiplexer Use 15ft cable per sensor253-L15
- 253-L5 Watermark Soil Matric Potential Block for Multiplexer Use 5ft cable per sensor253-L5
- 253-L50 Watermark Soil Matric Potential Block for Multiplexer Use 50ft cable per sensor253-L50
- 253-L30 Watermark Soil Matric Potential Block for Multiplexer Use 30ft cable per sensor253-L30
- 253-L35 Watermark Soil Matric Potential Block for Multiplexer Use 35ft cable per sensor253-L35
- 253-L1 Watermark Soil Matric Potential Block for Multiplexer Use 1ft cable per sensor253-L1
- 253-L10 Watermark Soil Matric Potential Block for Multiplexer Use 10ft cable per sensor253-L10
- 253-L25 Watermark Soil Matric Potential Block for Multiplexer Use 25ft cable per sensor253-L25
- 253-L575 Watermark Soil Matric Potential Block for Multiplexer Use 575ft cable per sensor253-L575
- 253-L500 Watermark Soil Matric Potential Block for Multiplexer Use 500ft cable per sensor253-L500
- 253-L350 Watermark Soil Matric Potential Block for Multiplexer Use 350ft cable per sensor253-L350
- 253-L300 Watermark Soil Matric Potential Block for Multiplexer Use 300ft cable per sensor253-L300
- 253-L250 Watermark Soil Matric Potential Block for Multiplexer Use 250ft cable per sensor253-L250
- 253-L200 Watermark Soil Matric Potential Block for Multiplexer Use 200ft cable per sensor253-L200
- 253-L450 Watermark Soil Matric Potential Block for Multiplexer Use 450ft cable per sensor253-L450
- 253-L20 Watermark Soil Matric Potential Block for Multiplexer Use 20ft cable per sensor253-L20
- 253-L33 Watermark Soil Matric Potential Block for Multiplexer Use 33ft cable per sensor253-L33
- 253-L40 Watermark Soil Matric Potential Block for Multiplexer Use 40ft cable per sensor253-L40
- 253-L85 Watermark Soil Matric Potential Block for Multiplexer Use 85ft cable per sensor253-L85
- 253-L110 Watermark Soil Matric Potential Block for Multiplexer Use 110ft cable per sensor253-L110
- 253-L75 Watermark Soil Matric Potential Block for Multiplexer Use 75ft cable per sensor253-L75
- 253-L34 Watermark Soil Matric Potential Block for Multiplexer Use 34ft cable per sensor253-L34
- 253-L60 Watermark Soil Matric Potential Block for Multiplexer Use 60ft cable per sensor253-L60
- 253-L100 Watermark Soil Matric Potential Block for Multiplexer Use 100ft cable per sensor253-L100
- 253-L105 Watermark Soil Matric Potential Block for Multiplexer Use 105ft cable per sensor253-L105
- 253-L6 Watermark Soil Matric Potential Block for Multiplexer Use 6ft cable per sensor253-L6
- 253-L66 Watermark Soil Matric Potential Block for Multiplexer Use 66ft cable per sensor253-L66
- 253-L14 Watermark Soil Matric Potential Block for Multiplexer Use 14ft cable per sensor253-L14
- 253-L19 Watermark Soil Matric Potential Block for Multiplexer Use 19ft cable per sensor253-L19
- 253-L21 Watermark Soil Matric Potential Block for Multiplexer Use 21ft cable per sensor253-L21
- 253-L26 Watermark Soil Matric Potential Block for Multiplexer Use 26ft cable per sensor253-L26
- 253-L28 Watermark Soil Matric Potential Block for Multiplexer Use 28ft cable per sensor253-L28
- 253-L31 Watermark Soil Matric Potential Block for Multiplexer Use 31ft cable per sensor253-L31
- 253-L32 Watermark Soil Matric Potential Block for Multiplexer Use 32ft cable per sensor253-L32
- 253-L38 Watermark Soil Matric Potential Block for Multiplexer Use 38ft cable per sensor253-L38
- 253-L150 Watermark Soil Matric Potential Block for Multiplexer Use 150ft cable per sensor253-L150
- 253-L70 Watermark Soil Matric Potential Block for Multiplexer Use 70ft cable per sensor253-L70
- 253-L65 Watermark Soil Matric Potential Block for Multiplexer Use 65ft cable per sensor253-L65
- 253-L125 Watermark Soil Matric Potential Block for Multiplexer Use 125ft cable per sensor253-L125
- 253-L12 Watermark Soil Matric Potential Block for Multiplexer Use 12ft cable per sensor253-L12
- 253-L72 Watermark Soil Matric Potential Block for Multiplexer Use 72ft cable per sensor253-L72
- 253-L79 Watermark Soil Matric Potential Block for Multiplexer Use 79ft cable per sensor253-L79
- 253-L92 Watermark Soil Matric Potential Block for Multiplexer Use 92ft cable per sensor253-L92
- 253-L115 Watermark Soil Matric Potential Block for Multiplexer Use 115ft cable per sensor253-L115
- 253-L122 Watermark Soil Matric Potential Block for Multiplexer Use 122ft cable per sensor253-L122
- 253-L131 Watermark Soil Matric Potential Block for Multiplexer Use 131ft cable per sensor253-L131
- 253-L145 Watermark Soil Matric Potential Block for Multiplexer Use 145ft cable per sensor253-L145
- 253-L164 Watermark Soil Matric Potential Block for Multiplexer Use 164ft cable per sensor253-L164
- 253-L173 Watermark Soil Matric Potential Block for Multiplexer Use 173ft cable per sensor253-L173
- 253-L187 Watermark Soil Matric Potential Block for Multiplexer Use 187ft cable per sensor253-L187
- 253-L7 Watermark Soil Matric Potential Block for Multiplexer Use 7ft cable per sensor253-L7
- 253-L99 Watermark Soil Matric Potential Block for Multiplexer Use 99ft cable per sensor253-L99
- 253-L82 Watermark Soil Matric Potential Block for Multiplexer Use 82ft cable per sensor253-L82
- 253-L42 Watermark Soil Matric Potential Block for Multiplexer Use 42ft cable per sensor253-L42
- 253-L11 Watermark Soil Matric Potential Block for Multiplexer Use 11ft cable per sensor253-L11
- 253-L13 Watermark Soil Matric Potential Block for Multiplexer Use 13ft cable per sensor253-L13
- 253-L27 Watermark Soil Matric Potential Block for Multiplexer Use 27ft cable per sensor253-L27
- 253-L8 Watermark Soil Matric Potential Block for Multiplexer Use 8ft cable per sensor253-L8
- 253-L17 Watermark Soil Matric Potential Block for Multiplexer Use 17ft cable per sensor253-L17
- 253-L3 Watermark Soil Matric Potential Block for Multiplexer Use 3ft cable per sensor253-L3
- 253-L1000 Watermark Soil Matric Potential Block for Multiplexer Use 1000ft cable per sensor253-L1000
- 253-L4 Watermark Soil Matric Potential Block for Multiplexer Use 4ft cable per sensor253-L4
- 253-L2 Watermark Soil Matric Potential Block for Multiplexer Use 2ft cable per sensor253-L2
- 253-L80 Watermark Soil Matric Potential Block for Multiplexer Use 80ft cable per sensor253-L80
- 253-L135 Watermark Soil Matric Potential Block for Multiplexer Use 135ft cable per sensor253-L135
- 253-L16 Watermark Soil Matric Potential Block for Multiplexer Use 16ft cable per sensor253-L16
- 253-L163 Watermark Soil Matric Potential Block for Multiplexer Use 163ft cable per sensor253-L163
- 253-L253 Watermark Soil Matric Potential Block for Multiplexer Use 253ft cable per sensor253-L253
- 253-L120 Watermark Soil Matric Potential Block for Multiplexer Use 120ft cable per sensor253-L120
- 253-L24 Watermark Soil Matric Potential Block for Multiplexer Use 24ft cable per sensor253-L24
Select a configuration to add to your quote
- Model:
- 253-L
- Item Number:
- 7889
- Warranty:
- 1 year
- Lead time:
- 14 days
- Compliance:
- w/o blocking capacitors
Overview
The 253, manufactured by Watermark, is a solid-state, electrical-resistance sensing device with a granular matrix that estimates soil water potential from 0 to -200 kPa (typically, wetter or irrigated soils). It connects to your data logger via an AM16/32-series multiplexer and is intended for applications where you will be monitoring a larger number of sensors.
Key Advantages
No maintenance required
Technical Description
When the amount of water in the soil surrounding the sensor changes, a difference in water potential between the soil and the sensor material is established. This gradient in potential causes a water flux between the two materials. For example, an irrigation or precipitation event results in movement of soil water into the 253 until equilibrium in water potential between the sensor and the soil occurs. An increase in the amount of water in the sensor reduces the electrical resistance between the sensor electrodes.
The data logger measures the resistance between electrodes, and then converts the resistance measurement to soil water potential by using calibration values supplied with the sensor.
The 253 consists of two concentric electrodes embedded in a reference matrix material. The matrix material is surrounded by a synthetic membrane for protection against deterioration. An internal gypsum tablet buffers against the salinity levels found in irrigated soils. The cable jacket is made of Santoprene rubber, which is resistant to temperature extremes, water, and UV degradation.
The 253's construction can allow the sensor (in some circumstances) to be left in the soil all year, eliminating the need to remove the sensor during fallow periods.
The 253 connects to a data logger via an AM16/32-series multiplexer. Because the multiplexer contacts close only during measurement, electrical currents leading to premature degradation of the 253 are eliminated.
Benefits
- Survives freeze-thaw cycles
- Compatible with AM16/32-series multiplexers, allowing measurement of multiple sensors
- Multiplexer connection prevents electrolysis from prematurely destroying the probe
- Rugged, long-lasting sensor
- Buffers salts in soil
- Compatible with most Campbell Scientific data loggers
Specifications
- Measurement Range
- 0 to -200 kPa
- Diameter
- 1.91 cm
(0.75 in.)
- Length
- 8.26 cm
(3.25 in.)
- Weight
- 360 g
(0.8 lb)
