SM150 Kit

    How to Buy
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Testimonials

"We used the instrument for 4 days of intense field work at 15 conservation areas across the Greater Toronto area - more than 200 readings per day. The Sensor proved to be an invaluable asset to our research project. It is fast, light weight and very energy efficient." Nao Ito, Graduate Student
York University, Toronto
  • Complete low-cost kit
  • ± 3% accuracy
  • Portable and easy to use

The SM150 Soil Moisture Kit provides an affordable and easy-to-use tool for obtaining reliable moisture measurements with minimal soil or substrate disturbance.

Introduction

The kit comprises an SM150T* Soil Moisture Sensor, a dedicated HH150 Moisture Meter and a carry case. The cable and connector are watertight – an essential requirement for potentially wet environments.

The HH150 Meter displays volumetric water content (% volume). Please note that although the SM150T Sensor has a built-in temperature sensor, the HH150 Moisture Meter does not measure or display temperature.

Simple operation

The HH150 hand moisture meter is lightweight and is very easy to use, being a readout-only device (no data recording or PC complications). Operation is simple – just insert the SM150T into the soil or substrate and press the Read button to make a reading.

Horticulture applications

The SM150 Kit comes with substrate calibrations for perlite, coir, peat, and mineral wool, as well as soils – providing a rapid, rugged solution for checking the uniformity of growing conditions for many types of growing media.

The SM150T is easy to insert and install – its sharp pins minimise soil disturbance and preserve the original soil structure around the measurement rods.

Other Delta-T soil moisture kits

Two alternative Delta-T Devices moisture measurement kits are available if greater accuracy or electrical conductivity (EC) measurements are required.

 

*The SM150 Kit was previously supplied with the SM150 Sensor, but now comes with the SM150T Sensor.

 

Specification

 

SM150T Soil Moisture Sensor
Accuracy ± 0.03 m3.m-3 (3%) volumetric water content (VWC)
± 0.5°C (0 to 40°C for temp sensor)
Soil moisture measurement range 0 to 1.0 m3.m-3 (100%)
but less accurate above 70% VWC
Salinity range 50 to 1000 mS.m-1
± 5% vol over 100 to 1000 mS.m-1 and 0-60% VWC
Temperature range Full accuracy over: 0 to 60°C
Output 0 to 1.0 V differential
Corresponding to 0 to ~0.6 m3.m-3
Power requirement 5-14 V, ~18 mA for 1s
Minimum 5 V with 100 m cable
Environmental IP68 with Delta-T supplied cables
Sample volume ~55 x 70 mm diameter
Sample volume is weighted towards soil immediately surrounding the rods
Dimensions and weight Overall: 143 x 40 mm diameter
Rods: 51 mm x 2.5 mm diameter
Weight: 0.1 kg (exc. cable)
Sensor calibrations Individual sensors are interchangeable
Recalibration advised every 3 years (depending on use)
Soil calibrations Generalised Mineral and Organic soil calibrations are supplied
HH150 Meter
Accuracy 0.5% of full scale over 5-40 °C (±7.5mV – negligible effect on SM150 accuracy)
Resolution 0.1% of voltage reading
Battery life/standby life 2 x GP alkaline AAA/ 10000 readings/1 year
Environmental Non-condensing
Compliance CE, FCC & ROHS

Accessories

Hardware

Main components and software

Mountings and enclosures

Installation accessories

Cables and networks

GPRS remote comms

Spares and consumables

Power options

Other

Product Resources

Data Sheets

Manuals

FAQs

Regulatory Information