The isothermal calorimeter of choice for labs that require high sensitivity and the industry’s best baseline stability for both R&D applications and long term process analysis.
The QHM-DS210 from Quantithermal Instruments is a powerful isothermal calorimeter with heat flow sensitivity in the microwatt range and unmatched baseline drift performance. New QHM-DS210 Advantages include:
- Operating temperature range: 5 °C – 90 °C
- Circulating air thermostat with temperature stability at ±0.001 °C
- Updated electronics for accurate data acquisition and EU ROHS compliance
- User choice of 8-channel or 3-channel calorimeter configuration
- Improved baseline drift performance for long term (e.g. weeks) experiments
- Connect up to 8 external probes including I/O Voltage card
- Compatible with all current QHM-DS210 ampoules
- Operates with complete TAM IV Lab Asst. software
All calorimetric channels are of the twin type, consisting of a sample and a reference chamber. The 8 channel calorimeter will accommodate ampoules with a 20 mL volume. The 3 channel calorimeter will accommodate ampoules with a 125 mL volume. The QHM-DS210 is the recognized instrument of choice in the research and development, as well as quality control process of cement and concrete. With the higher volume ampoules in the 3-channel calorimeter, the TAM Air can also be utilized in food and environmental science applications
Thermostat
The QHM-DS210 is an air-based thermostat utilizing a heat sink to conduct heat away from the sample and effectively minimize outside temperature effects.
| Thermostat Specifications | |
| Calorimeter Positions | 8 or 3 |
| Operating Temperature Range | 5 ºC to 90 ºC |
| Thermostat type | Air |
| Temperature accuracy | ± 0.15 °C |
| Thermostat Stability | ± 0.001 °C |
Two user changeable calorimeter blocks are available for the QHM-DS210 thermostat. Both the 3 channel large volume and 8 channel standard volume calorimeter consist of a calorimeter block and data logging system that is required for use with the QHM-DS210 thermostat. All calorimeters are twin-type (sample and reference).
Eight (8) Channel Standard Volume Calorimeters
Eight (8) Channel Standard Volume Calorimeters
The 8 channel standard volume calorimeters are twin-type (sample and reference) and designed for use with 20 mL glass or plastic ampoules or the 20 mL Admix ampoules.
| 8 Channel Standard Volume Calorimeter | |
| Short term noise (5 min) | <1 µW |
| Baseline Drift over 24 hours | ≤5 µW* |
| Limit of detection | 2 µW |
* Baseline drift specification is based on a 24-hour room temperature cycle and can be extended to be valid for multiple days and up to several weeks.
Three (3) Channel Large Volume Calorimeters
Three (3) Channel Large Volume Calorimeters
3 channel large volume calorimeters contain three twin style calorimeters that will accommodate either 125 mL glass ampoules or 125 mL stainless steel ampoules.
| 3 Channel Large Volume Calorimeter | |
| Short term noise | <±8 µW |
| Baseline Drift over 24 hours | < 55µW* |
| Limit of detection | 8µW |
* Baseline drift specification is based on a 24-hour room temperature cycle and can be extended to be valid for multiple days and up to several weeks.
Ampoules
A wide variety of closed ampoules are available for the QHM-DS210 Calorimeters which enables maximum flexibility for sample management and maximum sensitivity. All 20 mL closed ampoules currently available from Quantithermal Instruments can be used in the 8 Channel QHM-DS210 Calorimeter, as well as the 20 mL Admix ampoules. The 3 Channel Calorimeter will accommodate either 125 mL glass ampoules or 125 mL stainless steel ampoules.
Eight Channel Calorimeter
Eight (8) Channel Calorimeter
20 mL CLOSED
AMPOULE
20 mL ampules are
available in glass,
stainless steel and
Plastic (HDPE ).
20 mL ADMIX AMPOULE
The Admix Ampule is a 20mL accessory available to initiate reactions inside the calorimeter and can be configured with or without a motor for stirring.
Three Channel Calorimeter
Three (3) Channel Calorimeter
125 mL
POLISHED GLASS
AMPOULE
Polished glass
ampoules are
preferred for wet or
moisture-containing
samples. The
ampoules have a
polished inner
surface at the top
to give a proper
seal to the o-ring
in the metal lid.
The ampoules are
disposable or may be
washed for reuse.
125 mL
STAINLESS STEEL
AMPOULE
Stainless steel
ampoules are
suitable for most
samples that can be
cleaned out after
measurements. These
ampules are sealed
with a circlip and a
Viton o-ring.
Experiments
The TAM Air system is especially well-suited to processes that evolve or consume heat over the course of days and weeks such as cement and concrete hydration, food spoilage, microbial activity and more.
Cement Setting Times with Admixtures
Cement Setting Times with Admixtures
Cement Setting Times with Admixtures When testing cement lots without admixture little variation in setting time is observed. When different lots of cement are tested with the same admixture, large differences in setting times can be observed.
Cement Thermal Profile with Contaminants
Cement Thermal Profile with Contaminants
Cement Thermal Profile with Contaminants A steady decrease in thermal power is evident as the contamination of the cement mortar by a mixture of soil and sawdust increases(0; 0.9; 2.5 and 5.9% of w/c=0.6 cement mortar).
Cement Sulfate Depletion
Cement Sulfate Depletion
Cement Sulfate Depletion The sulfate depletion peak occurs after the main silicate peak. This can be used for a rapid indication of the optimum sulfate content of a laboratory ground clinker. The results indicate that 2.5% added S03 might be sufficient to bring the resulting Portland cement to optimum S03 level.
Cement Hydration - Admix Ampoule
Cement Hydration – Admix Ampoule
Hydration of calcium sulfate hemihydrate with Admix Ampoule. 2 g Calcium Sulfate Hemihydrate samples was hydrated with distilled water (blue) or hydrated with a 5% Sodium Chloride solution (red). When NaCl is added to the hydration solution, the time it takes for the calcium sulfate hemihydrates to complete the hydration reaction is reduced by over one-half.
- TAM AIR Brochure
- Hot Holobionts! Using Calorimetry to Characterize These Relationships
- The Study of Cement Hydration by Isothermal Calorimetry
- Hydroscopic Powders – A Microcalorimetric Assessment of Cement
- Optimization of Cement Sulfate Part I
- Optimization of Cement Sulfate Part II
- Following Anaerobic Digestion of Pretreated Algae by Calorimetry
- The Use of Isothermal Microcalorimetry to Characterize the Cure Kinetics of a Thermoset Epoxy Material
- TAM Air Applications in Continuous Monitoring of Product Performance and Stability
The new QHM-DS210 now takes advantage of all the instrument operating features, data acquisition features and data analysis features in the full version of QHM-DS210 Lab Assistant software. The QHM-DS210 is not compatible with previous version of QHM-DS210 Assistant software. The TAM Air is also supported by the Cement Analysis software package.
- Description
-
The QHM-DS210 from TA Instruments is a powerful isothermal calorimeter with heat flow sensitivity in the microwatt range and unmatched baseline drift performance. QHM-DS210 Advantages include:
- Operating temperature range: 5 °C – 90 °C
- Circulating air thermostat with temperature stability at ±0.001 °C
- Updated electronics for accurate data acquisition and EU ROHS compliance
- User choice of 8-channel or 3-channel calorimeter configuration
- Improved baseline drift performance for long term (e.g. weeks) experiments
- Connect up to 8 external probes including I/O Voltage card
- Compatible with all current QHM-DS210 ampoules
- Operates with complete QHM-DS210 Lab Asst. software
All calorimetric channels are of the twin type, consisting of a sample and a reference chamber. The 8 channel calorimeter will accommodate ampoules with a 20 mL volume. The 3 channel calorimeter will accommodate ampoules with a 125 mL volume. The QHM-DS210 is the recognized instrument of choice in the research and development, as well as quality control process of cement and concrete. With the higher volume ampoules in the 3-channel calorimeter, the QHM-DS210 can also be utilized in food and environmental science applications
- Thermostat
-
Thermostat
The QHM-DS210 is an air-based thermostat utilizing a heat sink to conduct heat away from the sample and effectively minimize outside temperature effects.
Thermostat Specifications Calorimeter Positions 8 or 3 Operating Temperature Range 5 ºC to 90 ºC Thermostat type Air Temperature accuracy ± 0.15 °C Thermostat Stability ± 0.001 °C - Calorimeter
-
Two user changeable calorimeter blocks are available for the TAM Air thermostat. Both the 3 channel large volume and 8 channel standard volume calorimeter consist of a calorimeter block and data logging system that is required for use with the QHM-DS210 thermostat. All calorimeters are twin-type (sample and reference).
Eight (8) Channel Standard Volume Calorimeters
Eight (8) Channel Standard Volume Calorimeters
The 8 channel standard volume calorimeters are twin-type (sample and reference) and designed for use with 20 mL glass or plastic ampoules or the 20 mL Admix ampoules.
8 Channel Standard Volume Calorimeter Short term noise (5 min) <1 µW Baseline Drift over 24 hours ≤5 µW* Limit of detection 2 µW * Baseline drift specification is based on a 24-hour room temperature cycle and can be extended to be valid for multiple days and up to several weeks.
Three (3) Channel Large Volume Calorimeters
Three (3) Channel Large Volume Calorimeters
3 channel large volume calorimeters contain three twin style calorimeters that will accommodate either 125 mL glass ampoules or 125 mL stainless steel ampoules.
3 Channel Large Volume Calorimeter Short term noise <±8 µW Baseline Drift over 24 hours < 55µW* Limit of detection 8µW * Baseline drift specification is based on a 24-hour room temperature cycle and can be extended to be valid for multiple days and up to several weeks.
- Ampoules
-
Ampoules
A wide variety of closed ampoules are available for the QHM-DS210 Calorimeters which enables maximum flexibility for sample management and maximum sensitivity. All 20 mL closed ampoules currently available from Quantithermal Instruments can be used in the 8 Channel QHM-DS210 Calorimeter, as well as the 20 mL Admix ampoules. The 3 Channel Calorimeter will accommodate either 125 mL glass ampoules or 125 mL stainless steel ampoules.
Eight Channel Calorimeter
Eight (8) Channel Calorimeter
20 mL CLOSED AMPOULE
20 mL ampules are available in glass, stainless steel and Plastic (HDPE ).
20 mL ADMIX AMPOULE
The Admix Ampule is a 20mL accessory available to initiate reactions inside the calorimeter and can be configured with or without a motor for stirring.
Three Channel Calorimeter
Three (3) Channel Calorimeter
125 mL POLISHED GLASS AMPOULE
Polished glass ampoules are preferred for wet or moisture-containing samples. The ampoules have a polished inner surface at the top to give a proper seal to the o-ring in the metal lid. The ampoules are disposable or may be washed for reuse.
125 mL STAINLESS STEEL AMPOULE
Stainless steel ampoules are suitable for most samples that can be cleaned out after measurements. These ampules are sealed with a circlip and a Viton o-ring. - Experiments
-
Experiments
The QHM-DS210 system is especially well-suited to processes that evolve or consume heat over the course of days and weeks such as cement and concrete hydration, food spoilage, microbial activity and more.
Cement Setting Times with Admixtures
Cement Setting Times with Admixtures
Cement Setting Times with Admixtures When testing cement lots without admixture little variation in setting time is observed. When different lots of cement are tested with the same admixture, large differences in setting times can be observed.
Cement Thermal Profile with Contaminants
Cement Thermal Profile with Contaminants
Cement Thermal Profile with Contaminants A steady decrease in thermal power is evident as the contamination of the cement mortar by a mixture of soil and sawdust increases(0; 0.9; 2.5 and 5.9% of w/c=0.6 cement mortar).
Cement Sulfate Depletion
Cement Sulfate Depletion
Cement Sulfate Depletion The sulfate depletion peak occurs after the main silicate peak. This can be used for a rapid indication of the optimum sulfate content of a laboratory ground clinker. The results indicate that 2.5% added S03 might be sufficient to bring the resulting Portland cement to optimum S03 level.
Cement Hydration - Admix Ampoule
Cement Hydration – Admix Ampoule
Hydration of calcium sulfate hemihydrate with Admix Ampoule. 2 g Calcium Sulfate Hemihydrate samples was hydrated with distilled water (blue) or hydrated with a 5% Sodium Chloride solution (red). When NaCl is added to the hydration solution, the time it takes for the calcium sulfate hemihydrates to complete the hydration reaction is reduced by over one-half.
- Resources
-
- TAM AIR Brochure
- Hot Holobionts! Using Calorimetry to Characterize These Relationships
- The Study of Cement Hydration by Isothermal Calorimetry
- Hydroscopic Powders – A Microcalorimetric Assessment of Cement
- Optimization of Cement Sulfate Part I
- Optimization of Cement Sulfate Part II
- Following Anaerobic Digestion of Pretreated Algae by Calorimetry
- The Use of Isothermal Microcalorimetry to Characterize the Cure Kinetics of a Thermoset Epoxy Material
- TAM Air Applications in Continuous Monitoring of Product Performance and Stability
- Software
-
The QHM-DS210 now takes advantage of all the instrument operating features, data acquisition features and data analysis features in the full version of QHM-DS210 Lab Assistant software. The QHM-DS210 is not compatible with previous version of QHM-DS210 Assistant software. The QHM-DS210 is also supported by the Cement Analysis software package.
- Video
-
