Oceanography
Selfcontainded Temperature
and
Temperature / Depth Logger
These miniature microprocessor controlled temperature
and depth loggers store data in non-volatile memory. The temperature and
depth transducers are mounted internally in the unit. Data is transferred
from these two units via a RS-232 cable to a personal computer.
Both units have Windows based graphical software. The software serves
two pruposes. First, the data is parsed and put into detailed graphs.
Once in the graph the data can be studied easily and quickly. Second,
the software provides the user a simple means of setting up the logger for
deployment. For more information on these loggers please click on the links
above.
Single Parameter Sensors
Dissolved Oxygen Sensors
This Dissolved Oxygen Sensors provides accurate
long term measurements under a wide range of environmental conditions.
The patented diffusion cell technology provides
a simple and effective means of obtaining continuous in-situ dissolved oxygen
measurements. The unique design eliminates the need for
sample stiring and the consequent risk of mechanical malfunction.
The diffusion cell is easily and quickly replaced in the field without the
need for specialised equipment or time consuming recalibration
.
Make more accurate measurements with state
of the art dissolved oxygen sensor:
DO100
The Dissolved Oxygen Sensor offers a unique combination
of advanced features:
- Sensor design requires no moving parts,
ensuring long term reliable field operation and low power consumption.
- New generation chemical sensor provides
excellent linearity and repeatability.
- Sensor output includes supplementary water
temperature reading.
- Tolerates oil contaminated environments
such as the long-term monitoring of landfill sites.
Accuracy
A combination of innovative membrane and chemical
sensor technology characterize the design of the Dissolved Oxygen Sensor.
The new generation chemical sensor provides inherently greater stability
than conventional polarographic technology. Compared to conventional membrane
designs, the large surface area of the Greenspan diffusion membrane substantially
reduces errors caused by surface contamination. Signal conditioning electronics
are designed with temperature compensation to provide true output in ppm of
dissolved oxygen or percent saturation......
$1,450.00
Log dissolved oxygen accurately and cost-effectively
with intelligent dissolved oxygen sensor:
Self-contained DO300
The model DO300 is a complete, self-contained
dissolved oxygen measurement and data logging system. The DO300 adds sophisticated
and versatile data acquisition, control and communications capabilities to
Greenspan's standard DO100 Dissolved Oxygen Sensor. Standard features of the
DO300 include:
- Storage of measured data within the sensor
for long periods.
- Easy configuration of logging parameters
and uploading of logged data.
- Automatic transfer of data to a central
office simply by attaching a data modem and mobile phone.
- Improved linearity and accuracy through
the use of microprocessor based compensation.
- Facility to set alarm conditions which
can trigger additional measuring equipment.
- Lithium battery pack option for fully self
contained operation.
The added features of the DO300 are accommodated
within a single compact sensor body only slightly larger than the DO100.
A separate data logger and weatherproof
housing are not required , eliminating the
added deployment costs normally associated with providing a remote data logging
capability.
In combination with an external data modem and
mobile phone, the DO300 enables remote uploading of logged data and re-programming
of logging schedules. In addition the DO300 can respond to user-programmed
alarm conditions by triggering an associated sensor or by calling one of
four preset phone numbers with a user-programmed alarm message.
The DO300 can be powered using either external
batteries (via the sensor cable) or with optional lithium battery pack, which
can be fitted as an extension to the sensor body, making a fully self-contained
measurement and logging system.
The DO300 will include a predictive algorithm
which considerably enhances the response time of the dissolved oxygen sensor,
total price......$2,350.00
Electrical Conductivity Sensors
The Electrical Conductivity Sensors provide highly
accurate conductivity measurements in a wide range of hydrological applications.
Exceptional reliability and chemical resistance
are guaranteed by a state of the art toroidal measuring system. Advanced
microprocessor technology provides highly accurate temperature compensated
measurements.
EC250
The EC200 offers a unique combination of advanced
features:
- Toroidal sensing technology eliminates electrode
corrosion effects guaranteeing long life and reduced field service.
- On-board temperature measurement and microprocessor
controlled temperature compensation and linearisation ensure highly accurate
readings in demanding conditions.
- Sensor can be field calibrated with easy
to use state of the art graphical calibration software.
- Separate conductivity and temperature outputs
deliver raw conductivity or on-board normalisation of conductivity to 25degC.
- Optional on-board data logger with sophisticated
logging features enables unattended operation for months at a time.
Reliability
The Greenspan EC Sensor combines robust,
sealed construction with an electrode-less sensing system to offer unparalleled
reliability. Designed for low power consumption, the Sensor can be operated
from remote power sources for extended periods. Field experience has shown
that the EC Sensor can be left unattended for up to six months. The high
reliability of Greenspan sensors means critical measurements are not lost
through sensor down time. Time wasting unscheduled site visits are therefore
minimised.
Accuracy
Field conductivity measurements in ionised solutions
have traditionally been fraught with inaccuracy due to temperature and electrode
effects. The Greenspan EC Sensor substantially eliminates these
conventional sources of error. A large size toroidal sensor element
uses the free ions in solution as a conductive path between two shielded
ferrite transformer cores. This system eliminates errors caused by electrode
degradation. An advanced compensation algorithm in the on-board microprocessor
substantially reduces system non-linearity and temperature drift errors.
EC250....$1,600.00
EC350
Intelligent Electrical Conductivity Sensor model
EC350 is a complete, self-contained electrical conductivity measurement and
data logging system. The EC350 adds sophisticated and versatile data acquisition,
control and communications capabilities to Greenspan's standard EC250 Electrical
Conductivity Sensor.
The 'intelligent'
features of the EC300 are similar to those of the DO300 intelligent sensor.
The EC350 can be supplied with a built-in pressure
sensor to provide a complete river level and conductivity data logger in
one sophisticated and elegant package.
Call for pricing 1-800-897-6266
pH Sensors
The Greenspan pH Sensors provide highly accurate
pH readings independent of temperature.
The proven gel-filled double junction sensor tolerates
rough handling while maintaining long term accuracy.
Coupled with robust construction and a fully submersible
design, the sensors provide excellent performance in a wide range of demanding
measurement applications.
PH100
The Greenspan pH Sensor offers a unique combination
of advanced features:
- Innovative, optically isolated signal conditioning
electronics ensure true and accurate readings at all times.
- Field proven gel-filled double junction
electrode provides long term accuracy.
- Optical isolation of signal conditioning
electronics enables operation in combination with other sensors without
compromising performance.
- Low power energy saving design enables
long term operation in remote data logging applications.
- Optional on-board data logger with a wide
range of sophisticated logging features enables long term unattended operation.
Reliability
The Greenspan pH Sensor combines a rugged gel-filled
electrode and robust, sealed construction to offer unparalleled reliability.
Designed for low power consumption, the sensor can be operated from remote
power sources for extended periods. Field experience has shown the Greenspan
pH Sensor can be left unattended for up to three months. The high reliability
of Greenspan sensors means critical measurements are not lost through sensor
down time. Time wasting unscheduled site visits are therefore minimised.
Accuracy
At the heart of the Greenspan pH Sensor is a
gel-filled electrochemical sensor which is very selective and sensitive
to hydrogen ions. Coupled earth loop currents, a frequent source of errors
with high impedance pH probes, are eliminated through the use of optically
isolated signal conditioning electronics. Built-in temperature compensation
removes temperature related errors.
PH100.....$900.00
Log accurate pH measurements cost-effectively
with Greenspan's versatile intelligent pH sensor:
PH300
Greenspan's Intelligent pH Sensor model PH300
is a complete, self-contained pH measurement and data logging system. The
PH300 adds sophisticated and versatile data acquisition, control and communications
capabilities to Greenspan's standard PH100 pH Sensor.
The 'intelligent'
features of the PH300 are similar to those of the DO300 intelligent sensor.
The alarm output can typically be set to trigger
pumps or dowsing processes where water chemistry is critical as in aquaculture
environments.
PH300.....$1,850.00
Turbidity Sensors
The Greenspan Turbidity Sensors provide accurate
and precise turbidity readings over a range of adverse environmental conditions.
An innovative optical system provides accurate
measurements even at low turbidities, while the advanced optical surface
treatment resists fouling.
TS100
The Greenspan Turbidity Sensor offers a unique
combination of superior features:
Highly sensitive system based on array of high
gain infrared optics provides excellent accuracy at low turbidities.
- Exceptional ambient light rejection is achieved
with infrared transmission modulation.
- Advanced polymer coating of optical system
resists fouling and minimises field maintenance requirements.
- Digital temperature compensation technology
ensures stable performance over a wide temperature range.
The Greenspan turbidity sensor design is based
upon an infrared emitter and receiver module and an electronic detection and
measurement unit. The optical system transmits an infrared beam of 860nm and
detects the backscatter intensity to determine turbidity.
Reliability
Experience has shown that the major factor in
accurate continuous monitoring of turbidity is the cleanliness of the optical
lens. Greenspan has coated the lens with a state of the art polymer to reduce
any material or growth adhering to the optical face, thus prolonging the interval
between site visits.
Accuracy
Accurate and stable turbidity readings are ensured
through the use of Greenspan's advanced filtering techniques to eliminate
interfering light sources. Both the optical geometry and infrared wavelength
conform to ISO 7027 "Method by measurement of attenuated radiation". Temperature
compensation is achieved with a sophisticated digital sampling technique
to respond instantly to possible temperature induced errors.
TS100.....$1,350.00
Greenspan turbidity sensors
have been used for effluent monitoring, river and stream measurements, estuarine
and runoff studies, forestry and catchment monitoring.
Log accurate turbidity measurements cost-effectively
with Greenspan's versatile intelligent turbidity
sensor
TS300
Greenspan's Intelligent Turbidity Sensor model
TS300 is a complete, self-contained turbidity measurement and data logging
system. The TS300 adds sophisticated and versatile data acquisition, control
and communications capabilities to Greenspan's standard TS100 Turbidity Sensor.
The 'intelligent'
features of the TS300 are similar to those of the DO300 intelligent sensor.
The TS300 provides an output to trigger a water
sampler where EPA legislation regulates maximum turbidity levels in catchments.
TS300.....$2,250.00
Pressure Sensors
The Greenspan Pressure Sensors provide the accuracy
(0.03%) and reliability required for a wide range of demanding measuring
applications.
With state of the art ceramic measuring technology
the Greenspan Pressure Sensors guarantee long term performance in the harshest
of environments.
PS210
The Greenspan Pressure Sensor provides a combination
of state of the art technical features:
Software calibration allows users to quickly
and accurately recalibrate the sensor, eliminating the down time required
when sensors have to be returned for laboratory calibration. Easy to use
Greenspan calibration software runs on a portable PC.
- Depth readings regardless of atmospheric
pressure changes (through use of a large diameter venting tube cable).
- The sensor easily handles applications
as diverse as borehole and pipeline monitoring; river and stream measurements;
effluent monitoring and bubbler systems.
Reliability
Rugged waterproof construction combined with
a ceramic pressure sensing diaphragm offer unmatched reliability - a claim
borne out by field experience in a wide range of environments. The high reliability
of Greenspan sensors means critical measurements are not lost through sensor
down time. Time wasting unscheduled site visits are therefore minimised.
Accuracy
Accuracy is designed into the Greenspan Pressure
Sensor through the use of a large-faced gold plated ceramic pressure sensor
- a technology known for its long term repeatability - supplemented by microprocessor
controlled electronics which maintain near perfect linearity and temperature
compensation. Linearity of 0.03% over a wide depth range and temperature
drift of only 0.003% will suit even the most precise measuring applications.
PS210.....$950.00
Log accurate pressure measurements cost-effectively
with versatile intelligent pressure sensor:
PS310
Greenspan's Intelligent Pressure Sensor model
PS310 is a complete, self-contained pressure measurement and data logging
system. The PS310 adds sophisticated and versatile data acquisition, control
and communications capabilities to Greenspan's standard PS210 Pressure Sensor.
The 'intelligent'
features of the PS310 are similar to those of the DO300 intelligent sensor.
The PS310 also provides a supplementary rain-gauge
input. With the addition of a tipping bucket raingauge, the PS310 becomes
a completely self-contained hydrographic measuring station, enabling correlation
of rainfall and river height data from one compact monitoring package.
PS310.....$1,400.00
Advanced Measurements and Controls Inc.
