Products
Thermal Properties Meter - SL368

Comes with sensors for liquids and solids

The KD2-Pro is a fully portable ­eld and lab thermal properties analyser. It uses the transient line heat source method to measure thermal di‑usivity, speci­c heat (heat capacity), thermal conductivity and thermal resistivity.

Sophisticated data analysis is based on 30+ years of research experience on heat and mass transfer in soils and other porous materials.

Complies with ASTM, IEEE, SSSA Standards.

The KD2 Pro has three interchangeable sensors which measure thermal conductivity, thermal di­usivity and speci‑c heat (heat capacity) along with data storage capabilities and an automatic data collection mode.

It allows unattended (user programmable) measurements and on-board data storage with space for over 4,000 measurements.
 

Features

  • Heated needle technology
  • Requires no calibration
  • Displays in engineering units
  • Small needle minimises soil disturbance

Supplied with

  • KS-1 Thermal Conductivity/Resistivity sensor (for liquids)
  • TR-1 Thermal Conductivity/Resistivity sensor (for solids)
  • SH-1 Dual-needle Thermal Properties sensor
  • User's manual
  • Pelican carrying case
  • Readout stand
  • Performance veri­cation standards
  • Thermal grease
  • Drill bit for drilling pilot holes in materials
  • Concrete pilot pin
  • KD2-Pro download utility
  • RS232 cable

Corrects for Temperature Drift

Temperature changes of a thousandth of a degree per second (the sun warming the soil, for example, or someone walking into the lab) destroy the accuracy of thermal properties calculations. Unlike other thermal needle systems, the KD2 Pro corrects for linear temperature drift that can account for large errors.

Excellent Accuracy

The compact KD2 Pro controller is much more than a simple readout for time and temperature. A proprietary algorithm fits time and temperature data with exponential integral functions using a nonlinear least squares method. This full mathematical solution delivers thermal resistivity to within ±10%.

 

 

 

Specifications

Accuracy

±5 to ±10% Thermal Conductivity/Resistivity
±10% Specific Heat
±10% Thermal Diffusivity

Measurement Speed

1, 2, 5, & 10 min. read times (see user's manual for more information)

Data Storage

4,095 readings, flash memory

Compliance to Standards

IEEE Standard 442-1981 and ASTM Standard D5334-08

Operating Environment of Sensors

-50 to 150°C

Battery Source

4 x AA

Auto-Read Mode

Users can collect unattended data at user-defined intervals in the auto-read mode

Type

Ultra low-power 16-bit microcontroller w/ 24-bit A/D converter

Display

Liquid Crystal Display (LCD) 7.5 cm x 4 cm

Case Dimensions

15.5 x 9.5 x 3.5 cm

Included Accessories

KS-1 Thermal Conductivity/Resistivity sensor (for liquids)
TR-1 Thermal Conductivity/Resistivity sensor (for solids)
SH-1 Dual-needle Thermal Properties sensor
User's manual
Pelican carrying case
Readout stand
Performance verification standards
Thermal grease
Drill bit for drilling pilot holes in materials
Concrete pilot pin
KD2 Pro download utility
RS232 cable

Calibration

Each KD2 Pro comes factory calibrated and includes performance verification standards

Range of Measurements

K: 0.02 to 4 Wm-1 C-1
D: 0.1 to 1.0 mm2s-1
R: 0.25 to 50mC W-1
C: 0.5 to 4 MJ m-3 C-1
* Accuracy and measurement range vary with sensor type. See Sensor(s) Information.

   

 

Supplied Sensors

KS-1 6cm Sensor

The KS-1 is ideal for measuring thermal resistivity. It is 60mm long, 1.27mm diameter.

TR-1 10cm Sensor

The TR-1 measures thermal conductivity and thermal resistivity and conforms to IEEE Standard 442-1981 and ASTM Standard D5334-00. 100mm long, 2.4mm diameter

SH-1 30mm Dual Senso

The SH-1 is the only sensor that measures thermal diffusivity and specific heat. 30mm long, 1.28mm diameter, 6mm spacing

 

Specifications

Sensor

KS-1

TR-1

SH-1

Measurement

Read time - 60 Seconds

Read time - 5 Minutes

Read time - 2 Minutes

Accuracy



(Conductivity): ±5% from 0.2-2 W/(m· K)

±0.01 W/(m· K) from 0.02-0.2 W/(m· K)


(Conductivity): ±10% from 0.2-4 W/(m· K)

±0.02 W/(m· K) from 0.1-0.2 W/(m· K)

(Conductivity) ±10% from 0.2-2 W/(m· K)
±0.01 W/(m· K) from 0.02-0.2 W/(m· K)
(Diffusivity) ±10% at conductivities above 0.1 W/(m· K)
(Volumetric Specific Heat) ±10% at conductivities above 0.1 W/(m· K)

Range

K: 0.02 to 2 W/(m·K)
R: 50°C to 5000°C cm/W

K: 0.1 to 4 W/(m·K)
R: 25°C to 1000°C cm/W

K: 0.02 to 2.00 W /(m· K)
R: 50°C to 5000°C·cm/W
0.1 to 1 mm2/s (diffusivity)
0.5 to 4 mJ/(m3K) (volumetric specific heat)

Cable

0.8 m

0.8 m

0.8 m

Environment

-50°C to 150°C

-50°C to 150°C

-50°C to 150°C

Sensors

6 cm, 1.27 mm Dia. needle

10 cm, 2.4 mm Dia. needle

30 mm, 1.27 mm Dia. 2 needles

 

 

1 In low viscosity liquids, the read time should be set to the minimum allowed 1 minute to avoid free convection.

2 In dry granular materials where contact resistance can be significant, extending the read time to the maximum allowed 10 minutes will produce the most accurate results.

3 In solid materials where a pilot hole has been drilled and contact resistance can be significant, using thermal grease and extending the read time to the maximum allowed 10 minutes will produce the most accurate results.

4 The SH-1 sensor will take accurate measurements in rock and cured concrete, but it is very difficult to drill small small diameter, parallel holes in these materials to accommodate the SH-1 needles.

5 The KS-1 needle with 10 min read time gives good results with insulation. Heater temperatures with the other two probes are quite high for insulation measurements.

 

 

Soil Resistivity Meter - SL366 & SL366/1

 

Use in the field or in the lab with the optional Soil Box, Model SB-1. Model SR-2 has a Pin Selector switch which allows you to choose between 2 Pin or 4 Pin tests without removing cables.

FEATURES

• Simple Operation
• Up to 3.3M
• Data Logger connection
• Common pin spacing multipliers
• Low battery condition indicator
• Internal rechargeable battery (12v)
• Battery charger included

APPLICATIONS

• Wenner 4 Pin Method
• 3 pin “Fall of Potential” Method
• 2-Pin Method
• Geological studies
• Archeological studies
• Soilbox*

 

Soil Box - SL366/1

Soil box for use with the SR2 meter. Model SB-1 is made of strong plastic resins allowing for rugged field use. Material is clear for easy visual inspection and cleaning.