Selection of 23 products among
23
BROADBAND METER
The perfect solution for the monitoring / measurement of RF pollution.
The Broadband meter was designed as a general purpose electromagnetic measurement tool. It detects electric and magnetic
fields from power line frequencies up to several GHz. It is unique in its combination of a magnetic AC gaussmeter, electric field meter and RF field strength meter, all in one small package. Therefore it can be used to study and measure the magnetic fields produced by electrical power cables (including overhead lines), the fields produced by video displays, right through to the radiation emitted by microwave ovens, mobile phones and wireless LANs. Other applications include the measurement of RF environments to minimise health risks, detection of leakage from microwave ovens and detection of concealed transmitters.
Specifications
Gauss Meter: 0-3 range: 0.2 - 3 milligauss.
0-100 range: 0.3 - 100 milligauss.
Freq. range: 50 - 500Hz flat.
Accuracy: ±20 % to 50MHz
Electric field: Range: 10 V/m - 100 KV/m
Freq. range: 40 - 100KHz.
Accuracy: ±25 %
RF Field Strength: Range: 0.01 - 1 KV/m
Freq. Range: 100KHz - 2.5 GHz flat.
Indication: Analogue meter with rotary range change switch.
Power: 9V (PP3) internal Battery. Battery test reading on meter.
Size: 15 cm x 9 cm x 3 cm
>>>
View the product on laplace.co.uk
Laplace Instruments Ltd
ANALYTICAL NOVOGROM COLUMNS
ANALYTICAL NovoGROM COLUMNS – 3.0, 4.0,
and 4.6 mm i.d.
The analytical NovoGROM HPLC column system is many-fold proven. These columns can be connected to any HPLC
system either conventionally via
1/16" capillary, ferrules and screw fittings or dead volume free via the NovoGROM
Quick connectors. Standard dimensions are 3, 4 and 4.6 mm internal diameter and lengths of 2, 4, 6, 10, 12.5, 15, 20,
25 and 30 cm. Guard columns, i.e., protective precolumns, are available in the lengths of 5, 10 and 20 mm. Columns may
be filled as often as is required in the economical refill service. Use of the 3 mm i.d. column results in a reduction in the
consumption of solvent of ca. 43% or 57% compared to the 4 mm and 4.6 mm i.d. columns respectively. This not only
reduces costs, but is also active environmental protection.
All NovoGROM columns can be supplied with any of the stationary phases listed on GROM websites or in this GROMHPLC
catalogue (see pages 12/13 and 144-151). Alternatively, they may also be packed by the GROM filling service
with any stationary phase specified by the customer.
>>>
View the product on grom.de
Grom Chromatography Groupe - Grace
COLUMN HPLC - WYATT COMET™
Wyatt COMET™ (Cell Operation and Maintenance Enhancing Technology)Light scattering is the premier technique for absolute macromolecular characterization. However, it is well known that in order to
achieve the most accurate and reproducible results, one must maintain scrupulously clean optics and mobile phase. Even when the mobile phase is pre-filtered, chromatography columns continuously shed small particles that, over time, can contaminate even the cleanest optics.
This is where the Wyatt COMET™ (Cell Operation and Maintenance Enhancing Technology) concept becomes indispensable. This new device may be integrated with the flow cell manifold of a DAWN DSP, DAWN EOS, miniDAWN or miniDAWN Tristar and applies a radio frequency ultrasonic field specially tuned to the flow cell structure itself.
Unlike traditional ultrasonic cleaning methods, the field produced by the COMET device is resonant with the flow cell bore and does not produce cavitation bubbles that might damage the glass surface-nor does it form bubbles that would affect the scattering signals themselves. When used on a regular basis, the need to remove the flow cell for cleaning may be postponed indefinitely. The COMET loosens particles that may have adhered to the cell walls and removes them on a daily basis. In addition, the periodic activation of the device can prevent the adhesion of new particles. Moreover, the device operates in-situ while the mobile phase is flowing through the cell. There is no need to disconnect any fluid fittings, change solvents, or disassemble anything.
Wyatt Technology's Chief Executive Officer, Dr. Philip Wyatt noted that successful light scattering measurements come from minimizing dust and flare from the laser beam. "Up until now, our patented flow cell design has addressed these problems in three ways. First, the critical entrance and exit windows of the flow cell are located far from the scattering center to reduce the effect of contaminated windows. Second, the laser light source is focused into an extremely small beam diameter so that particulates and other contaminants on the walls are not illuminated. Third, the flow cell can be easily removed, manually cleaned, and reinstalled without perturbing the optical alignment. What has always been required, however, is an on-line method of maintaining flow cell cleanliness. That's what is so exciting about this novel device."
>>>
View the product on wyatt-europe.com
Wyatt Technology Europe
PARTIAL DISCHARGE MONITORING - INDIPARD® IDPS
Sensors for Online Partial Discharge Monitoring
Brief description
Active partial discharge sensors
Integrated preamplifier
Search coil for coupling without physical contact
Inductive
coupling for monitoring individual components
3-phase CapEye® amplifier for capacitive coupling electrodes
Can be retrofitted in old installations
Compact design and practically orientated assembly system
Powered and monitored by Indipard evaluation unit
Field of application and benefits
The partial discharge (PD) sensors,
together with the INDIPARD evaluation
unit, form an online monitoring system for
insulation monitoring of high-voltage and
medium-voltage installations. Continuous
monitoring of partial discharge activities
offers the opportunity of detecting a
worsening or serious change in the
condition of the insulation of the
equipment at an early point, thus giving
the user the opportunity to intervene in
good time so as to prevent more serious
damage.
Mode of operation
The PD sensors are installed in the parts
of a medium-voltage or high-voltage
installation at risk. They detect the highfrequency
electric fields generated by the
partial discharges and forward them to
the IDP16 via coaxial cable. The sensors
are active, i.e. they feature a preamplifier.
It is powered by the evaluation unit via
the coaxial cable. Depending on
application, either search coils, inductive
PD sensors, capacitive coupling
electrodes with a CapEye® amplifier or
devices with CapEye® interface may be
used.
Search coil
The search coil performs coupling
without physical contact. It must be fitted
in the electric field between high voltage
and earth. Its metal bar forms a
capacitive coupling electrode. Its range is
approx. 2 m in open installations and
approx. 1 m in enclosed installations. It is
particularly suitable for retrofitting in old
installations.
Complete installation kits are available
for specific types of installation.
Inductive PD sensor
The high-frequency current generated by
partial discharges is detected with
respect to earth with the aid of a
Rogowski coil.
Such a coil is suitable for monitoring
individual components such as a
transformer..
In this case, it must be ensured that the
section to be monitored features only one
defined earthable point and is otherwise
installed on insulated mountings.
CapEye® amplifier
The CapEye® amplifier features three
inputs for connection to capacitive
coupling electrodes such as capacitive
insulators or capacitive coupling
electrodes. The range is approx. 5 m
from the installation location in both
directions of the conductor but ends after
approx. 1 m in cable.
CapEye® amplifiers have improved
common mode rejection cabability. The
CapEye® amplifier is particularly suitable
for monitoring twin switchgear cells, in
the case of multi-tier design or in the
case of multiple separation of switchgear
cells.
Voltage test system with CapEye®
amplifier
The Capdis-Sx-C is an integrated,
capacitive voltage test system in
accordance with IEC 61243-5, either
with or without contact outputs.
It is also fitted with a CapEye® amplifier
and thus allows monitoring of the voltage
and condition of the insulation on the
same coupling electrodes.
Technical data
Connection cable to evaluation unit
Type Coaxial cable
Length up to 50 m per input
Search coil IDPS-A-F
Rated meas. range 400 pC
Antenna bar length standard 50 cm, min. 30 cm,
max. 200 cm
Installation with 2 spacers directly on an earthed
surface within the switchgear cubicle
Min. earthing clearance 2 cm
Opt. earthing clearance 4 ... 10 cm
Detection range with 4 cm earthing clearance
min. 100 cm in enclosed installations
min. 200 cm in open installations
Perm. amb. temp -20° ... 55°C in operation
-30° ... 70°C for storage
Connection F socket
and earth
>>>
View the product on may-elektronik.de
May Elektronik
SUPERB PERFORMANCE HPLC - ADEPT SERIES
Adept Series HPLC systems and modules offer top grade performance, are economically priced and designed for all applications including method development, quality assurance, quality control,
pharmaceutical and ion chromatography.
A revolutionary new UV-Visible Dynamic Absorbance Detector (DAD), offers all the spectral capabilities of a Photo-Diode Array Detector (PDA), with greatly improved performance when used as a variable wavelength detector (VWD).
Pumps, UV detectors and system control modules may be stacked vertically for the smallest possible space requirement or in lower profile where space permits.
State of the art design, based on 30 years of HPLC design experience, is combined with up to the minute software, designed to operate in Windows XP, but may also be used with Windows 98 and 2000. It offers the easiest possible use with full system control, spectral and data processing.
Ultra Fast Scanning Detector
Cecil Instruments introduce WaveQuest, a breakthrough in UV-Visible detector design. A true alternative to Photo Diode Array detectors.
Super fast wavelength scanning, scanning UV spectrum in 200 ms. Powerful spectral processing software for R&D, method development, purity determination etc.
Absolutely top performance as variable wavelength detector, with data processing by PowerStream software, another Cecil Instruments development.
>>>
View the product on cecilinstruments.net
Cecil Instruments
WYATTQELS (QUASI-ELASTIC-LIGHT-SCATTERING) INSTRUMENT
WyattQELS™ On-Line Quasi Elastic Light Scattering from your HPLCThe WyattQELS (Quasi-Elastic-Light-Scattering) instrument contains a real time digital correlator. The correlator measures the
autocorrelation function of the intensity signal from any one angle of the DAWN or from the 90 degree location of the miniDAWN. The correlator then calculates the hydrodynamic radius at each elution time in order to provide hydrodynamic radii over an entire chromatographic peak.
Unlike many other dynamic light scattering instruments, the WyattQELS detector, when interfaced to the DAWN, allows one to measure correlation as a function of angle. Particles larger than 150nm may scatter relatively little light at 90 degrees because of intra-particle interface or "Mie scattering".
This effect may cause significant distortion in computer particles size distribution for some kinds of polydisperse samples. Since the WyattQELS optical fiber can be moved easily to any one of the 18 DAWN angles, the measurements can be optimized for the best results for particles that are very large. With most other instruments, which only make measurements at 90 degrees, if large particles are present, the signals may be low or lost altogether. But with the WyattQELS you can always move the optical fiber to a lower or a higher angle.
WyattQELS Features include:
Multiple Tau correlation design with a fixed range of channel from 480 nsec to ~1 hour (real-time).
No sample time optimization required!
A total of 264 channels with input data format of 5 bit for the first 16 channels, the the sample time doubles every 8 channels and the data width is incremented 1 bit for every set of channels. No pre-scaling required.
>>>
View the product on wyatt-europe.com
Wyatt Technology Europe
PORTABLE PARTIAL DISCHARGE TESTER - INDIPORT IDC 20
Portable partial discharge tester for switchgear
Brief description
Partial discharge tests in a few minutes
without having to shutdown
Checkable and reproducible due to artificial PD source
Specially designed for medium-voltage switchgear
Utilises the coupling capacitance of the voltage testing system
Fits directly to HR interfaces or equipment and sensors
with CapEye®-Interface
Read off and/or record measured values
Long-term observations, trend recognition
Data recorded on SD memory cards
Evaluation on a PC with standard software
Light, portable and maintenance-free
Can be used without a PC
Optional: sensors to record weather data simultaneously:
pressure, temperature, humidity and dew point
Optional: sending text messages via GSM modem
Area of application
The use of partial discharge (PD) tests
on high-and medium-voltage installations
is now undisputed. Manufacturers test
their equipment before delivering it to
customers. Many customers ask for a
repeat test after assembly and before
commissioning on site. However, these
do not include the major weak points for
operators, namely the cable terminations.
Subsequent regular testing requires the
complete isolation of the installation, is
very costly and is therefore generally
dispensed with.
INDIPORT is a portable partial-discharge
measuring system. It is designed for use
during operation and does not need the
installation to be isolated. Installations
can consequently be tested at any time
and at reasonable cost. In addition to
instantaneous values, the INDIPORT can
also be used for long-term
measurements, including climate
measurements.
Method of operation
INDIPORT, with its preamplifier, uses the
existing capacitance taps on the
switchgear, such as the HR interfaces or
voltage testing systems with CapEye®
interface. Sensors in the INDIPARD
partial discharge monitoring system can
also be connected directly. The normal
operating voltage is used as the test
voltage. Pulses with a known charge are
fed in from the adjacent cell with the
IDP-SRC PD simulator, again via the
capacitance tap, and compared with the
display. This means the measurement
results are reproducible and comparable
with other stations.
Partial discharges often occur
sporadically, depending on the weather.
In order to be able to obtain any
meaningful information about the
condition of the insulation in an
installation, observation over an
extended period of time is necessary.
Consequently, the INDIPORT includes a
complete data logger for long-term data
capture in addition to the momentary
display with a phase diagram. SD or
SDHC memory cards of up to 32 GB
storage capacity can be used for data
recording.
PD measurements from different time
periods and locations can only be
compared if the most important climate
data is taken into account.
To do this, INDIPORT simultaneously
captures the partial discharge activity,
relative humidity, temperature, dew point
and air pressure at adjustable time
intervals. For evaluation, the memory
card is removed from the unit and can
then be evaluated on a PC with a card
reader and spreadsheet program.
INDIPORT can be combined with a GSM
modem. When a PD occurs, the unit calls
the service personnel by text message.
This is particularly important when
searching for and localising sporadic
PDs.
INDIPORT is supplied with its
accessories in a study plastic carrying
case.
>>>
View the product on may-elektronik.de
May Elektronik
RF1000/RF2000 SYNTHESISER
RF1000 Synthesiser (30MHz - 1GHz)
RF2000 Synthesiser (30MHz - 2.4 GHz)
PC controlled RF synthesisers for immunity testing up to 2.4GHz matched to the requirements of IEC61000-4-3 and featuring
automatic scanning to pre-programmed schedules.
Simple to use via PC 'windows' control software.
USB port interface. No need for special interface cards.
Field probe input for automatic level control.
Suitable for use with any Power Amplifier and antenna / cell / chamber combination.
Standard IEC61000-4-3 tests pre-programmed.
EUT status input and prompt output.
The RF1000/RF2000 are signal sources matched to the RFI immunity requirements of IEC61000-4-3.
Features such as sine and pulsed modulation, programmable start and stop frequencies, frequency step, and dwell time are provided as standard.
These units are essentially the same except that the RF1000 covers the range 30MHz to 1000MHz and the RF2000 covers 30MHz to 2400MHz. Both include powerful Windows control software with USB port interface.
When used with the LaplaCell range of test cells, these synthesisers provide full automatic control of field level and all that is needed to provide an automated compliance test facility. Advanced features such as pre-scanning, display of EUT status against applied field level and full Windows compatibility are standard.
These synthesisers has been conceived with the practical user in mind. To make the best use of the immunity test facilities for both compliance testing and product investigations, several useful features have been developed. These include:
Powerful EUT monitoring with real time display correlated to field strength and frequency.
Sweep can be continuous or 'pause on fault' or 'stop on fault'. Additional EUT excitation output, either pulsed or continuous.
Flexible single frequency search mode. Automatic ramping of field strength and fine control of frequency.
>>>
View the product on laplace.co.uk
Laplace Instruments Ltd
ULTRASONIC DIRECTIONAL MICROPHONE - INDIPOINT IDM 40
Ultrasonic Directional Microphone for the Location of Partial Discharges
Brief Description
Usable under live voltage conditions, no need to shut down
Integrated laser pointer to mark the PD
source
Unaffected by interference
Light and handy
For indoor and outdoor use
Simple to operate
Uses rechargeable or non-rechargeable batteries
Low current consumption, long battery life
Robust transport case
Additional red dot sight for use in very bright environment
Application
Partial discharges (PDs) are undesirable
in medium- and high-voltage installations.
They constitute a long term risk to
effective insulation and thus also to
operational reliability. However, detecting
partial discharges without suitable
instruments requires considerable
experience and excellent powers of
hearing.
IndiPoint vastly simplifies the search for
PD sources. It comprises a sharply
focused ultrasonic microphone specially
designed for use in electrical energy
distribution installations. It is not
necessary to shut down the installation
before searching for faults.
IndiPoint is suitable for use in both indoor
and outdoor areas.
Function
Partial discharges give rise not only to
electrical signals, but also to sounds in
both the audible and ultrasonic range.
These sound sources can be located to
outstanding effect with a directional
microphone. IndiPoint operates in the
ultrasonic range where extraneous noise
is scarcely encountered.
IndiPoint comprises an ultrasonic
microphone with an amplifier and
headphones. By adjusting the
amplification, the volume of weak PD
sources can be increased and that of
strong sources turned down.
The large parabolic reflector sharply
focuses the sound and allows the source
to be identified with pinpoint accuracy.
With the aid of the integrated laser
pointer, the PD source can then be
marked out for ease of location. For use
in bright sunlight out of doors, IndiPoint is
also equipped with a red dot sight as
optical sighting device.
The low current consumption of the
amplifier enables the unit to operate for
approx. 170 hours on one battery charge.
Additional Uses
IndiPoint is suitable not only for
identifying partial discharges. It is also
ideal for locating leaks, for example from
pressurized pipes and tanks.
Accessories
IndiPoint is supplied complete with all
accessories in a robust plastic transport
case.
Power is supplied by standard
rechargeable batteries, so that in an
emergency ordinary batteries (type AA)
can be used instead. A quick-charger
suitable for wide-range input is also
included in the supply.
Directional Microphone
Casing Impact-resistant plastic
Reflector diameter 277 mm
Overall length 205 mm
Weight Approx. 830 g (inc. rechargeable
batteries)
Range Up to 20 m
Permissible ambient Operation: -10° ... 40° C
temperature Storage: -20° ... 50° C
Operating frequency 40 KHz
Current consumption Approx. 10 mA
Headphone connection 3.5 mm jack socket
Battery compartment 4 x AA normal or rechargeable
batteries
Laser pointer As per EN 60825-1
Laser Class 2
P < 1mW, 650 nm
Tripod thread 1/4 "
Optical sighting red dot sight on top
device
Accessories Included
Headphones Enclosed design
3.5 mm jack plug
Weight approx. 270 g
Batteries 4 x AA rechargeable
NiMH batteries 1700 mAh
Adequate for
approx. 170 h continuous operation
(without laser pointer)
Charger Automatic quick-charger
with compensation charging mode
for 4 NiMH mignon cells
Wide-range input
90 – 250 VAC, 50 - 60 Hz
Power consumption max. 15VA
Transport Case
Dimensions 510 x 340 x 275 mm (L x B x H)
Material Plastic
Overall weight Approx. 7 Kg
(with IDM 40 and all accessories)
>>>
View the product on may-elektronik.de
May Elektronik
