The Peltier
Environmental Chamber leverages the power and flexibility of the
Peltier effect. Using a multistage thermoelectric module, the
chamber is able to be precisely regulated from –50° C to 150° C. A
temperature controller is included for regulating the DC current
through the module in order to achieve and hold any chilled or
elevated temperature within the range to within 0.1° C. The Peltier
module is rated for 100,000 hours offering a long and reliable life.
Nitrogen gas is used for chilled temperatures to prevent frozen
condensation. A tank and regulator kit is available if your lab does
not already have nitrogen service. Ice water is circulated through
the base of the chamber during chilling cycles to draw away the heat
produced by the multistage module. Add a Quartz Cell for
liquid/liquid studies. The Peltier Environmental Chamber is
supported on every ramé-hart instrument. However, note that the
temperature logging features requires DROPimage v2.7 or higher.
The ramé-hart
Overhead Optical Imaging Kit is designed to be added to any
instrument with DROPimage Advanced (v2.x or higher). The
kit permits an existing goniometer to measure contact angle using a
novel and powerful overhead method. The advantage to this method
over the traditional profile view method is that hydrophilic
surfaces can be more easily characterized. Low contact angles (under
10°)
are traditionally difficult using traditional methods. The overhead
method involves capturing an image of the three-phase line from
above and then calculating the contact angle based on its diameter
and the drop volume. The Automated Dispensing System 100-22 is
recommended. Another advantage to the overhead method is that it
works well even where surrounding topology prevents a direct line of
sight required for the conventional profile view method. The Measure distance command can also be used to
precisely measure linear distances. An alternate Illuminator Fixture
as well as an Optical Reflector Fixture and all parts (software and
hardware) necessary to measure contact angle and distances from
overhead on an existing goniometer / tensiometer are included in the kit. The
Overhead Optical Imaging Kit works only on the standard ramé-hart
specimen leveling stage. For use inside a chamber or for another
applications, please contact us for customization.
click for large view
Advanced Chamber
with Temperature and Humidity Control
P/N 100-26-TH
The
Advanced Chamber with Temperature and Humidity Control p/n 100-26-TH provides a controlled environment for up
to 6" diameter samples. The chamber features rotating support,
quartz windows for viewing, inlets for humid and dry air, outlets
for exhaust and pressure relief. The temperature can be controlled
up to 230°
C or up to 85°
C with humidity. The humidity level can be regulated between 0 and
100%. Gas parts are included as well as cooling ports to circulate
water or a refrigerant through the base of the chamber to speed up
cooling or to bring the chamber temperature to below ambient. The
system ships complete with a temperature and humidity controller, an ultrasonic humidification system for
cool mist, and a dry air pump and desiccant-based drying unit.
Additional customization is also possible with this versatile
modular design. The Advanced Chamber is supported on
Models 500, and 590 with or without the optional Automated Tilting Base.
A
temperature only version of this chamber is also available, p/n
100-25-T. It includes all of the same features as 100-26-TH except
humidity control. The chamber temperature can be controlled up to
230°
C and humidity can be added later with an available upgrade kit (p/n
100-26-H-KIT).
Advancing
and receding contact angles are readily determined by inclining the
substrate and allowing the drop to deform as a function of gravity.
By mounting a ramé-hart goniometer on the optional Automated Tilting Base, it is possible to incline not only the substrate
but the entire instrument, preserving perfectly the optics-to-specimen
alignment. This technique greatly expedites such measurements. The
Automated Tilting Base is fully software driven and is supported by
and requires DROPimage Advanced v2.3 and higher.
For
more information on the Automated Tilting Base,
click here.
This
Manual Tilting Base is the same as 100-25-A except instead of being
software-driven, it's manually driven with a hand crank. The 100-25-M
can be upgraded to the Automated version with the upgrade kit p/n
100-25-U. The Manual Tilting Base accessory is supported on every current-generation
ramé-hart instrument and is an excellent choice for measuring
advancing and receding contact angles as well as determining contact
angle hysteresis and roll-off angle.
For
more information on the Manual Tilting Base,
click here.
The
ramé-hart Automated Dispensing System is a software-driven tool for
producing precise pendant and sessile drops and is particularly
useful for dynamic studies.
For more information,
click here. This
option is supported on all ramé-hart models. Software control is
included in DROPimage Pro and DROPimage Advanced. Models 290 and 590 include the Automated
Dispensing System. Stand alone software is also available
for use with other instruments.
For
more information on the Automated Dispensing System,
click here.
The
ramé-hart Oscillator, when used in conjunction with the ramé-hart Automated Dispensing
System, provides precision-controlled periodic oscillatory
deformation of pendant and sessile drops and bubbles in order to
measure surface dilatational elasticity and viscosity using
DROPimage Advanced v2.4 or above. The Oscillator supports speeds
between 0 and 25Hz and is ideally suited for many dynamic surface
tension and surface rheology studies.
For
more information on the Oscillator,
click here.
The 100-12-U2 U2
Series SuperSpeed Upgrade Kit can be added to any new system with DROPimage
Advanced (i.e., Models 250, 260, 290, 500, and 590). This kit
includes a 750 fps SuperSpeed digital camera with high throughput
USB3.0 interface. This kit also includes an upgrade to a
powerful PC with sufficient processing power and additional
flash memory to handle the demanding tasks of video capture at
SuperSpeed capturing rates.
The DROPimage Advanced software v2.5 and higher includes tools for capturing
and saving high-speed videos to AVI files. Video replay and
recalculate features allows individual frames or series of frames to
be analyzed in real-time or after data collection. This kit is
designed to be added to any new system with DROPimage Advanced. Please call or contact us
for information on upgrading an existing instrument.
The
SuperSpeed U2 Series Upgrade Kit is available on the following models:
The Environmental
Chamber, in conjunction with any Model 100-00, 260, 500, 590,
or 790 ramé-hart goniometer,
permits controlled conditions for the study of contact angle,
surface energy, and surface tension. Controlled elevated temperatures to 300° C are produced by the
integral electrical heaters, while sub-ambient temperatures can be
produced by circulating a suitable coolant through the base of the
chamber. Fittings for this purpose, and others for atmosphere
control, are furnished. The chamber is suitable for vacuum use and
pressures to 0.6 Atmospheres. Custom designed environmental chambers
are available by special request. This option requires a
Proportional Temperature Controller (p/n 100-50) if regulated elevated
temperature is desired. Order p/n 100-07-KIT if you require both the
Environmental Chamber 100-07 and Proportional Temperature Controller
100-50.
Additionally, a quartz cell (p/n 100-07-50) is available for
liquid/liquid, inverted sessile drop, and captive bubble studies. A
Cover with Stage assembly (p/n 100-09-10, shown below) is also
available to facilitate advanced studies requiring a submerged
adjustable stage.
The
ramé-hart Proportional Temperature Controller permits precisely
regulated temperatures between ambient and 300°
C and is used in conjunction with the ramé-hart Environmental
Chamber p/n 100-07, Elevated Temperature Syringe p/n 100-11,
ramé-hart Advanced Chamber with Temperature Control p/n 100-26-T*, and the
ramé-hart High Pressure Chamber p/n 100-08. Available in 115V and
230V versions. This product now (since July 2013) features
an RS-485 port which will allow temperature logging when used with
DROPimage Advanced v2.7 or higher.
*Note that p/n
100-26-T and p/n 100-11 are limited to 230°
C.
The
ramé-hart Temperature Logger collects temperature data and
communicates it with DROPimage Advanced (v2.7 or higher) in order to
permit temperature logging during time-dependant experiments. A
thermocouple (sold separately) collects the temperature data and a
serial connection with the PC permits data communication.
The Heated Environmental Cell can be added to any ramé-hart
instrument (current or legacy model). This cell provides temperature
control to 300° C.
The Temperature Controller (100-50) is included. Cooling ports are included for cycling chilled
water or a coolant to bring the
temperature down quickly or to below ambient temperatures.
Optional temperature logging is possible with DROPimage Advanced v 2.7 or
higher.
The Hot Plate option can be added to any ramé-hart instrument to
provide a heated specimen stage that is temperature controlled up to 300° C.
This option includes the Temperature Controller (100-50) to provide
0.1° C precision. Cooling ports are included for cycling chilled
water or a coolant to bring the
temperature down quickly or to below ambient temperatures.
Optional temperature logging is possible with DROPimage Advanced v 2.7 or
higher.
The Cover with Stage accessory replaces
the standard cover supplied with Environmental Chamber p/n 100-07
and contains an
externally adjustable substrate stage which permits studies of sessile
drops on either side of substrate (normal and inverted), or captive
bubbles on the underside. Substrate clamping will also accommodate
films. Cover is equipped with an O-ring seal to interface with
Elevated Temperature Syringe 100-11.
The
Film Clamps are furnished as a pair and mount directly to the
working surface of the leveling stage of any ramé-hart goniometer.
Their function is to maintain flatness of film-type substrates and
they can also be utilized to secure specimens to the stage when
using the tilting base to evaluate advancing and receding contact
angles.
This Quartz Cell option is included with the Environmental Fixture
p/n 100-14 and
can be ordered as a replacement part for that option. The quartz
cell also is designed to work inside of the Environmental Chamber
p/n 100-07 and Advanced Chamber p/n 100-26 and Peltier Environmental
Chamber p/n 100-30. It can also be
used stand-alone for liquid/liquid and liquid/gas studies when no
stage is required. The internal volume is 45mL.
This
accessory is designed for liquid/liquid studies including captive
bubble, inverted and hanging pendant drops as well as regular and
inverted sessile drops. Our standard Quartz Cell (p/n 100-07-50) is
included to provide distortion-free viewing. Outfitted with a
suspension stage for solid substrate fixturing and/or immersion in
bulk liquid in the quartz vessel. The stage height is externally
adjustable and the entire fixture can be easily disassembled for
cleaning. All metal parts are stainless steel or anodized aluminum.
To watch a sample
captive bubble study done with the Environmental Fixture on
ramé-hart instrument, check out this
video.
The rotating wafer support maintains flatness and position of 4", 6", 8",
10", 12", and 13.625" diameter wafers in order to achieve contamination-free contact
angle readings while preserving flatness. Each wafer support is hand
lapped to a high-tolerance. The support incorporates a rotating stage plate
which is graduated in 1°
increments with
displacement holes for creating the appropriate suction. The wafer
support mounts directly to the leveling stage of the Contact Angle
Goniometer. Model 400 supports and includes an 8" wafer support
(and other sizes can be added). Models 190, 210, 250, and 290 support
the 4" wafer support only. Larger supports may require an
upgrade kit which will extend the working distance of the camera and
extend the microsyringe fixture. We offer kits which include all of
the necessary parts.
The
6" or 8" diameter rotating Vacuum Chuck Support holds down large films and other
flexible substrates while surface studies are performed. Supported
on Models 100-00, 300, 400 and 500. Vacuum source is required.
The Vacuum
Chuck is supported on the following underlined models:
For
over 60 years, ramé-hart has built contact angle tools. Many of the
legacy instruments, in particular Model 100-00 with a manual
microscope, are still in use. Our manual-to-automated Imaging Kit
(p/n 100-12-U4-00-UPG)
provides all of the necessary components to upgrade a legacy
instrument to function as a current-generation instrument. We add
our U4 Series 520 frames/second SuperSpeed digital camera, our DROPimage
Pro software, PC and LCD, and all
necessary components to convert a legacy tool to a current-generation tool allowing you to preserve your investment while
keeping up with the advances in imaging and software technology. In
order to provide a firm quotation, we suggest you email us a
snapshot of your system so we can determine if any other upgrades or
components are necessary in order install the kit. Please contact us
for further details and current pricing.
We have another
upgrade kit (p/n 100-12-U4-UPG) that will upgrade any legacy analog camera system to a
current-generation digital system which operates at 4 to 10 times
faster than the legacy design. The kit includes our our U4 Series
520 frames/second SuperSpeed digital camera subsystem and includes an upgrade to the current
edition of DROPimage.
Additional upgrade
kits are available for F2, F4, and U1 Series Systems. Please
contact us for details.
The
microsyringe fixture facilitates rapid and precise formation of
pendant and sessile drops. Following placement of a sessile drop, the syringe
is easily swung from the field of view. It will return to its exact
working location for placement of the subsequent drop.
Alternatively, it can remain at the working location, allowing the
user to continuously add or withdraw fluid from a sessile drop for
the purpose of forming advancing or receding contact angles. This attachment is now included with all ramé-hart goniometer
systems but is available as an option for users of our legacy
instruments that did not
include this accessory. Note that the Microsyringe Fixture supports
both the manual Microsyringe Assembly (p/n 100-10-20), the Manual
Syringe (p/n 100-10-52) with Adapter (p/n 100-10-51) as well as any
available adapter for the
Automated Dispensing
System (p/n 100-22).
The
Microsyringe Fixture is supported on and included with the following models*:
*Note: The
microsyringe fixture is included with all new systems.
**Model 90 uses a unique Microsyringe Fixture which is
included with all Model 90 instruments (both Pro Edition and
Base Edition)
This
accessory maintains flatness and position of lead frames in order to
achieve accurate contact angle measurements. Precise positioning of
each testing surface is accomplished with ease. This support mounts
directly to the stage of the Contact Angle Goniometer. Size
requirements for various lead frames are easily accommodated by our
manufacturing facility.
The Lead
Frame Support is supported on the following underlined
models:
Use of this
accessory with the ramé-hart goniometer permits liquid/liquid or
liquid/liquid/solid studies to be performed at pressures of up to 68
Atmospheres and at temperatures to 230° C. Elevated temperatures are
produced by integral electrical heaters. Liquid pressure is
generated by a static pressurization system attached to the chamber.
The chamber contains an externally adjustable substrate positioning
stage. This high pressure chamber is for use with non-hazardous
liquids only.
The High Pressure
Chamber is currently out of production. Please
contact us for
suggestions for alternative solutions to high pressure applications.
The Elevated
Temperature Syringe permits
forming drops of materials which have melting points as high as 230°
C. May be used with Chamber 100-07 and Cover 100-09 for
controlled environment studies. Test materials contact only glass
and stainless steel. A Temperature Controller p/n 100-50 is included. This
accessory is ideal for liquids with high melting points such as
solder and polymers. One replaceable syringe assembly and one needle
are included.
Please note that the Elevated Syringe is
currently out of production. Please
contact us
for suggestions of alternate solutions. We continue to stock spare
parts for existing Elevated Temperature Syringes.
