TOMST INDIA Products

STANDARD TMS-4

STANDARD TMS-4

The TMS-4 dataloggers provide an excellent solution for measuring air and soil temperature, as well as soil moisture, with the help of three temperature sensors and a soil moisture sensor. Equipped with a high-capacity lithium battery that lasts around 10 years, these loggers are highly autonomous and require minimal maintenance. Their substantial memory, capable of storing 524,288 data records, ensures efficient long-term data collection. Combined with a durable construction and an exceptionally low price, the TMS-4 is ideal for extensive measurements in harsh environments. Peer-reviewed research on the TMS loggers has been published in the respected scientific journal Agricultural and Forest Meteorology.

Technical Specifications:

  • Size: 29 cm
  • Weight: 108g
  • Memory: 524.288 events ~ 14 years in 15 min intervals
  • Battery: lithium (3,6 V; 2600 mAh) ~ 10 years
  • Connector: Touch probe for settings and extraction of data into PC via USB adapter
  • Temperature sensors: 3x MAXIM/DALLAS Semiconductor DS7505U+, with resolution of 0.0625 °C and with accuracy of ±0.5 °C
  • Range of measurement: -40 to +60 °C (capable of -60 to +85°C)
  • Moisture sensor: 1x soil moisture sensor
  • Software: Lolly Manager
TMS-4 Extreme

TMS-4 Extreme

The TMS Extreme has the same dimensions as the TMS Standard (29 cm) but is slightly heavier, weighing 118 g. The placement of the temperature and soil moisture sensors is also identical, allowing for easy data comparison between the two models. The TMS Extreme features several internal upgrades. The battery capacity has been increased to 3500mAh, which is a 30% improvement over the TMS Standard. This enhancement results in an extended lifespan of approximately 14 years and a broader measurement temperature range. Additionally, the device is fully filled with epoxy, making it heavier but significantly more durable.

Key Features:

  • Same size (29 cm) but slightly heavier (118 g) than TMS Standard
  • Identical sensor placement allows easy data comparison
  • Battery capacity is 3500mAh, offering 30% longer life (approx. 14 years)
  • Wider temperature measurement range
  • Filled with epoxy for increased durability and weight
TMS Long

TMS Long

This is an extended version of the standard TMS-4 device. The upper pipe, which houses thermosensor #3, is available in sizes of 20 cm, 30 cm, and 45 cm. Is a prolonged version of the standard TMS-4 device. The upper pipe with thermosensor no.3 is manufactured in sizes 20, 30, 45 cm.

Available Sizes:

  • 20 cm upper pipe length
  • 30 cm upper pipe length
  • 45 cm upper pipe length
Buriable TMS unit

Buriable TMS unit

The buriable unit measures temperature at three different soil depths and also monitors soil moisture. It is composed of two parts: the first part includes the soil moisture sensor and two temperature probes, which can be buried deep in the ground. The second part contains the battery pack, data downloading probe, and the third temperature sensor. These two sections are connected by cables, which are securely protected with a cable protector. The buriable TMS is available in lengths of 0.5m, 1m, and 2m.

Features:

  • Measures temperature at three levels and soil moisture
  • Consists of two parts: sensor unit (soil moisture and two temperature meters) and battery pack (data probe and third thermometer)
  • Sensor unit can be buried deep; battery pack remains accessible
  • Connected by protected cables
  • Available in sizes: 0.5m, 1m, and 2m
Point Dendrometer

Point Dendrometer

The potentiometer-based point dendrometer offers precise, automatic measurement of stem diameter changes with an accuracy of less than 1 µm at user-defined intervals. Additionally, it can measure air temperature using a thermocouple located at the bottom of the device. Its durable construction and high-capacity lithium battery make it resilient to extreme conditions.

Technical Specifications:

  • Span: 8,890 μm
  • Resolution: 0.27 μm
  • Linearity: < 5%
  • Battery life: ~10 years
  • Memory capacity: ~14 years in 15 min intervals
  • Size of main body: 25x113mm
  • Potentiometer-based dendrometer measures stem diameter changes < 1 µm
  • Measures air temperature with a thermocouple at the bottom
  • Robust construction with a high-capacity lithium battery for extreme conditions
TMS4 Plant Mimic Sensor

TMS4 Plant Mimic Sensor

The TMS-4 dataloggers measure air/soil temperature and soil moisture using three temperature sensors and one moisture sensor. With a 10-year battery life, 524,288 data recordings, and minimal maintenance, they are autonomous and cost-effective. Their robust design supports long-term measurements in harsh conditions. TMS loggers have been peer-reviewed in Agricultural and Forest Meteorology.

Key Features:

  • Three temperature sensors and one moisture sensor
  • 10-year battery life
  • 524,288 data recordings capacity
  • Range of measurement: -60 to +85°C
  • Minimal maintenance required
  • Robust design for harsh conditions
DENDROMETER

DENDROMETER

The potentiometer-based dendrometer measures stem diameter changes with µm accuracy, includes a thermocouple for air temperature, and is built for durability with a high-capacity lithium battery. The potentiometer-based point dendrometer enables precise automatic measurement of stem diameter changes with accuracy greater than 1 µm at user-defined intervals. Additionally, it features a thermocouple at the base of the body to measure air temperature. Its rugged construction and high-capacity lithium battery make it durable and capable of withstanding extreme conditions.

Key Features:

  • Potentiometer-based measurement system
  • Accuracy greater than 1 µm
  • Built-in thermocouple for air temperature
  • User-defined measurement intervals
  • High-capacity lithium battery
  • Rugged construction for extreme conditions

Why Choose TMS-4 Dataloggers?

TMS-4 dataloggers offer a unique ability to accurately measure both air and soil temperature, as well as soil moisture. Their compact size (approximately 15 cm above ground and 10 cm below) allows them to mimic an herbaceous plant, capturing the microclimatic conditions at ground level.

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Precise Measurements

Provides more precise data for ecological studies compared to standard meteorological stations.

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Low Maintenance

High-capacity lithium battery and large memory enable long-term data collection in remote areas.

Fast Data Extraction

Download a month's worth of data in just three seconds via USB cable using the TMD adapter.

Installation Tips

Proper Installation

  • Ensure direct soil contact with the green belowground section
  • Avoid air pockets that can lead to inaccurate readings
  • Monitor soil conditions in dry soils (e.g., clay) for proper contact
  • Create pre-holes in rocky soil to prevent sensor damage

Technical Specifications

  • Span: 8,890 μm
  • Resolution: 0.27 μm
  • Linearity: < 5%
  • Battery life: ~10 years
  • Memory capacity: ~14 years in 15 min intervals
  • Size of main body: 25x113mm

Protection from Wildlife and Human Interference

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In our experience, wild animals, such as deer, wild boar, bears, and monkeys are often responsible for damaging the devices. To prevent this, we recommend protecting the TMS dataloggers with wire cages to prevent tampering.

In outdoor locations with high tourist traffic, we suggest installing the devices in secure, less visible areas, such as within government-owned properties like schools or other public buildings, to reduce the risk of damage or theft.

Reference

When citing TMS dataloggers in scientific publications, please use:

Wild J., Kopecký M., Macek M., Šanda M., Jankovec J., & Haase T. (2019). Climate at ecologically relevant scales: A new temperature and soil moisture logger for long-term microclimate measurement. Agricultural and Forest Meteorology, 268, 40–47.