Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Related Manuals for METER TEMPOS
Summary of Contents for METER TEMPOS
- Page 1 TEMPOS...
-
Page 2: Table Of Contents
1. Introduction ....................1 2. System ......................2 2.1 Specifications .................... 2 2.2 TEMPOS Controller ..................4 2.2.1 Main Menu ..................6 2.2.2 Take a Reading Screen ..............7 2.2.3 Measurement Configuration Screen ..........7 2.2.4 Stored Readings Menu ..............9 2.2.5 Unattended Mode Screen .............. - Page 3 3.4 Take a Reading ..................22 3.5 Saving and Viewing a Reading ..............24 3.6 Interfacing with TEMPOS Utility ............... 25 3.6.1 Install TEMPOS Utility ..............25 3.6.2 Download Data ................26 3.6.3 Update Firmware Version ............... 27 4. Theory ......................
-
Page 5: Introduction
Thank you for purchasing the TEMPOS Thermal Properties Analyzer from METER Group. This manual will help the user understand and use the TEMPOS controller to the best of its capability. Verify all components are included and appear in good condition: •... -
Page 6: System
SySTEM 2. SySTEM This section describes the specifications and components of the TEMPOS. The system comprises the handheld device (Section 2.2) and compatible four sensors (Section 2.3). 2.1 SPECIFICATIONS MEASUREMENT SPECIFICATIONS KS-3 (6-cm [small] single needle) Conductivity Range 0.02–2.00 W/(m • K) Accuracy ±10% from 0.2–2.0 W/(m •... - Page 7 TEMPOS RK-3 (6-cm [thick] single needle) Conductivity Range 0.1–6.0 W/(m • K) Accuracy ±10% from 0.1–6.0 W/(m • K) Resistivity Range 17–1,000 °C • cm/W PHySICAL CHARACTERISTICS Controller Dimensions Length 18.5 cm (7. 28 in) Width 10 cm (3.94 in) Height 3.5 cm (1.38 in)
-
Page 8: Tempos Controller
(Section 3.6). The TEMPOS controller requires five alkaline AA batteries (included). The TEMPOS controller has a POWER button, a BACK button, and a central D-pad. The POWER button (Figure 1) turns the TEMPOS controller on and off. To completely power down the unit, quickly press the POWER button and release. - Page 9 Main menu. Changes are automatically saved. The D-pad selects configurations or options in the TEMPOS controller (Figure 1). • The CENTER button (Figure 1) serves as the Select or Enter function.
-
Page 10: Main Menu
Configuration Stored Readings Take a Reading Device Configuration Unattended About Mode Figure 3 Main menu There are six icons in the Main menu that represent the six main functions of the TEMPOS. • Take a Reading (Section 2.2.2) • Measurement Configuration (Section 2.2.3) -
Page 11: Take A Reading Screen
TEMPOS • Stored Readings (Section 2.2.4) • Unattended Mode (Section 2.2.5) • Device Configuration (Section 2.2.6) • About (Section 2.2.7) 2.2.2 TAKE A READING SCREEN The Take a Reading screen is where a user will start a single measurement after configuring measurement options (Section 3). - Page 12 The TEMPOS controller will automatically choose the best heating time for the material selected in the Measurement Configuration screen (Figure 5). Configure the TEMPOS controller to measure each of the four sensor types in either high- power mode or low-power mode by selecting the reading type Conductivity/Resistivity (Diffusivity/Heat Capacity for the SH-3 sensor) in the Measurement Configuration screen (Figure 14).
-
Page 13: Stored Readings Menu
The KS-3 needle defaults to low-power mode, while the TR-3, SH-3, and RK-3 needles default to high-power mode. METER recommends that only expert operators change the power mode from the default settings for special measurements. In all but a few cases, changing the power mode from the default settings results in reduced accuracy. - Page 14 VIEW From the Stored Readings screen (Figure 6), select the View option. This allows a user to view all the data currently stored in the TEMPOS controller (Figure 7). Measurements are stored in the order they are taken. Figure 7 Data View list There are four columns in the Data View list: Index—the sequential number assigned to the reading.
-
Page 15: Unattended Mode Screen
TEMPOS Annotation for the measurement, Time at the start of the measurement if there is one Date of measurement Measurement mode used Any tags that have been made Type of sensor used Index number of measurement Power mode Thermal reading... - Page 16 SySTEM Readings: 5 Interval: 15 min Main menu Unattended Mode screen Figure 9 Unattended Mode screen Use the Readings option to select the number of readings to take in any given measurement session. Use the D-pad to navigate to the Readings option and push the CENTER button. Use the UP and DOWN arrows to toggle to the number of readings desired.
-
Page 17: Device Configuration Screen
TEMPOS 2.2.6 DEVICE CONFIGURATION SCREEN The Device Configuration screen is where a user can set the TEMPOS controller settings. These settings are universal and will influence all readings and data saved on the TEMPOS controller. To reach the Device Configuration screen, select the Device Configuration icon on the Main menu. -
Page 18: Sensors
In low-viscosity liquids operate in low-power mode to avoid free convection and avoid any vibration of the sample. Some users have found good results by placing the TEMPOS in unattended mode, reading every 15–30 min, and leaving it to read overnight. The lowest readings obtained are those without convection. - Page 19 TEMPOS 2.3.2 TR-3 The large (100-mm long, 2.4-mm diameter), single-needle TR-3 sensor measures thermal conductivity and thermal resistivity. The TR-3 is primarily designed for soil and other granular or porous materials and is the preferred choice if a tight hole can be made to accommodate the sensor.
-
Page 20: Operation
OPERATION 3. OPERATION Please read all of the instructions before operating the TEMPOS to ensure it performs to its full potential. PRECAUTIONS METER sensors are built to the highest standards, but misuse, improper protection, or improper installation may damage the sensor and possibly void the manufacturer’s warranty. -
Page 21: Measurement Configuration
Press the BACK button to return to the Main menu. 3.2 MEASUREMENT CONFIGURATION Before taking a reading, the TEMPOS controller must be configured to reflect the desired reading type. From the Main menu, navigate to the Measurement Configuration icon (Figure 3). - Page 22 Table 3 Measurement Configuration menu options Mode Setting Description For measurements made in intermediate conductivity porous materials such as soils. Compatible with all TEMPOS sensors except SH-3. Uses only high-power mode. Soil Read time is 1 min. Computes thermal conductivity ( ) and thermal resistivity ( r ) from proprietary advanced algorithms.
- Page 23 ) from proprietary advanced algorithms. For measurements on soils, rock, and concrete when the older, less accurate ASTM/IEEE specifications must be followed. Compatible with all TEMPOS sensors except the SH-3. ASTM/IEEE Uses high-power mode. Read time is either 5 or 10 min. The TR-3 needle and a 10-min read time are consistent with the IEEE 442-1981 specification.
-
Page 24: Sensor Installation
11. Press the BACK button to return to the Main menu. 3.3 SENSOR INSTALLATION METER designed all four TEMPOS sensors for ease of installation and use. To install sensors, insert the sensor needle(s) all the way into the sample material. Some materials are more difficult than others to get the needle(s) inserted. -
Page 25: Rock Or Cured Concrete (Rk-3)
Follow the steps below to install a sensor into rock or cured cement. CAUTION: METER recommends the user wear safety goggles and use care when drilling into rock or cured cement. Drill a 4-mm (5/32-in) hole with a rotary hammer. -
Page 26: Solid Material (Tr-3)
Longer equilibration times are often needed due to the low thermal conductivity of insulative materials. 3.4 TAKE A READING Before taking a reading, plug the sensor into the TEMPOS controller using the DB-15 connector. NOTE: For information on using Unattended Mode to take readings in go to Section 2.2.5. Contact... - Page 27 TEMPOS In the Reading screen, press the CENTER button to select Start Reading. NOTE: If in Insulation Reading mode, the reader will prompt for the thickness at the end of the reading. To abort a reading at any time, push the CENTER button of the D-pad. Aborting the reading will return to the Take a Reading screen.
-
Page 28: Saving And Viewing A Reading
OPERATION Annotate and Save Scroll Bar Save as Verification Discard Calculated thermal measurement and units. The letter to the left of the reading indicates the type of reading. K = thermal conductivity D = thermal diffusivity C = volumetric specific heat capacity ρ... -
Page 29: Interfacing With Tempos Utility
NOTE: Once a reading has been discarded, it cannot be retrieved. 3.6 INTERFACING WITH TEMPOS UTILITy TEMPOS Utility is a free download utility available from metergroup.com. It is used to download data from the TEMPOS controller and enables the user to analyze data in a Microsoft Excel spreadsheet. -
Page 30: Download Data
Once connected, the controller serial number will appear in the TEMPOS Utility dropdown (Figure 20). If more than one TEMPOS is connected via USB, each will show in the dropdown. Click on the correct TEMPOS from those listed in the dropdown list. -
Page 31: Update Firmware Version
Once connected, the controller serial number will appear in the TEMPOS Utility dropdown (Figure 20). If more than one TEMPOS is connected via USB, each will show in the dropdown. Click on the correct TEMPOS from those listed in the dropdown list. - Page 32 OPERATION Click the Update Firmware button in the TEMPOS Utility screen (Figure 20). Click the Disconnect button. Unplug the TEMPOS from the computer. Close TEMPOS Utility.
-
Page 33: Theory
The TEMPOS design attempts to optimize thermal properties measurements relative to these issues. METER sensors are relatively large and robust making them easy to use. The TEMPOS keeps heating times as short as possible to minimize thermally induced water movement and lower the time required for a measurement. -
Page 34: Dual-Needle Algorithm
THEORy In the past the temperature data obtained from probes like those used in TEMPOS were converted to thermal properties using an approximation to the solution for the infinite line heat source equations. In some cases this worked well, but in others the results were pretty bad. -
Page 35: Single-Needle Algorithm
TEMPOS The TEMPOS collects data for at least 30 s to determine the temperature drift. If the drift is below a threshold, current is applied to the heater needle for 30 s, during which time the temperature of the sensing needle is monitored. At 30 s the current is shut off and the temperature is monitored for another 30 s. -
Page 36: Algorithm For The Insulation Mode
As mentioned earlier, analytical solutions are available for the real needles TEMPOS uses that more closely approximate the measured temperatures. However, these solutions take a lot of computing power, so they are not well suited to a handheld field instrument. -
Page 37: Volumetric Specific Heat For Insulation Thermal Conductivity Measurements
(Section 4.4). The dimensions and thermal properties of the KS-3 needle are known and are incorporated into the numerical model in the TEMPOS. The volumetric specific heat determined experimentally is entered into TEMPOS at the start of the measurement. The KS-3 needle is inserted into the insulation and allowed to thermally equilibrate. -
Page 38: Understanding The S
⋅ ⋅ An uncertainty of ±20% in this value will have a negligible effect on the conductivity reported by TEMPOS, so a single value representing the insulation of that type should be sufficient. 4.5 UNDERSTANDING THE S VALUE is a goodness of fit measure used in a least squares analysis. S does not tell how close the result is to the real value because the real value is unknown. -
Page 39: Service
The sensors will require periodic verification. Verification that the instrument is working correctly can be done by measuring a standard of known thermal conductivity. The TEMPOS kit ships with two standard materials that can be used to verify that the sensors are operating according to specifications: •... - Page 40 12. Compare the reading of the value recorded on the Certificate of Quality Assurance (included in the TEMPOS kit) to the results from the verification reading. For the sensor to be reading accurately, the measurements must be within ±10% of the glycerin standard.
-
Page 41: Verification With The Sh-3
The TEMPOS controller requires five alkaline AA batteries. Follow the steps below to change the batteries: Turn the TEMPOS controller over and locate the battery cover in the lower section of the back panel (Figure 23). Battery cover Figure 23 Battery cover... -
Page 42: Troubleshooting
Insert new batteries, orienting them according to the polarity marks shown in the case. Replace the cover and return the screws. Turn on the TEMPOS controller. Update the time and date as prompted. If the TEMPOS controller should ever require servicing, please contact Customer Support. 5.3 TROUBLESHOOTING... -
Page 43: Customer Support
NOTE: For instruments purchased through a distributor, please contact the distributor directly for assistance. 5.5 TERMS AND CONDITIONS By using METER instruments and documentation, you agree to abide by the METER Group, Inc. USA Terms and Conditions. Please refer to metergroup.com/terms-conditions... -
Page 44: References
REFERENCES REFERENCES Abramowitz, Milton, and Irene A. Stegun. Handbook of mathematical functions: with formulas, graphs, and mathematical tables. Vol. 55. New York: Dover publications, 1972. Blackwell, JHl. "A transient-flow method for determination of thermal constants of insulating materials in bulk part I—Theory." Journal of applied physics 25, no. 2 (1954): 137-144. - Page 45 INDEX INDEX about screen 7 , 13 email address 39 accuracy equilibration 23 , 26 , 36 KS-3 2 erase 9 , 10 RK-3 3 error 10 SH-3 2 Syx 11 , 24 , 34 TR-3 2 annotate 12 , 24 fax number 39 firmware 6 batteries 1 , 12 , 16...
-
Page 46: Index
TR-3 sensor 2 volumetric specific heat capacity 2 phone number 39 power mode 14 , 18–19 , 24 taking a reading 20–22 TEMPOS Utility 25–26 readings terms and conditions 39–40 best practices 18–19 , 24 theory 29–32 read time 18–19 , 24 dual-needle algorithm 30–31... - Page 47 18216-04 7.31.2020 METER Group, Inc. USA 2365 NE Hopkins Court Pullman, WA 99163 T: +1.509.332.2756 F: +1.509.332.5158 E: info@metergroup.com W: metergroup.com METER Group AG Mettlacher Straße 8, 81379 München T: +49 89 1266520 F: +49 89 12665220 E: info.europe@metergroup.com W: metergroup.de...
Need help?
Do you have a question about the TEMPOS and is the answer not in the manual?
Questions and answers