< PreviousRemote or integral % RH and temperature probe. Displays maximum/minimum humidity or temperature. Optional backlit display. The therma-hygrometer is an easy to use, relative humidity and air temperature measuring instrument. The units measure % RH over the range of 0% to 100% RH with a resolution of 0.1% RH and temperature over the range of -20°C to 70°C with a resolution of 0.1°C. It incorporates a custom LCD, displaying % RH, °C/°F, dew point indication, maximum/minimum and hold. There is an automatic display of both open circuit and low battery. The 506-150 displays the temperature and humidity at the push of a button separately. The 506-150 is powered by three AAA batteries with a minimum life expectancy of 10,000 hours. An auto power-off facility turns the therma-hygrometer off automatically after ten minutes, maximising battery life. This hand-held battery operated instrument is operated by a single keypad button. It is suitable for a wide variety of applications where fast and accurate measurements of relative humidity and temperature are required. The probe is connected to the display unit via a one metre flexi-cable which enables its measurements to be taken in areas where access is limited.SpecificationsRange-20°C to 70°C, 0% to 100% RHResolution0.1°C/°F, 0.1% RHAccuracy - Temperature:Accuracy ±0.4°C over the range 10°C to 40°C otherwise ±1°C ±1 digit Accuracy - Humidity:±2% RH (10% to 90% RH)Hysteresis± 1% RHSensor TypeSilicone bandgap, capacitance polymerBattery3 x 1.5-volt AAABattery LifeMin 5 years (10,000 hours)Display12 mm LCDDimensions (mm)25 x 56 x 128Weight (g)130/160330MeteorologyEnvironmental TestingHumidity MeasurementHand-Held Therma-HygrometerProduct Code: 506-150tel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.comHygrometer/Thermometer 100 mm Diameter Dial 10% to 100% RH -25°C to +45°CProduct Code: 506-122A precision instrument using specially treated strands of human hair to measure relative humidity. The 100 mm diameter gauge covers the range 10% to 100% RH. A separate set hand with a centre button is fitted to the case to enable the user to monitor changes. Can be wall-mounted or fitted inside a Stevenson screen.331MeteorologyEnvironmental Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 200Digital Electronic Temperature/Humidity MeterProduct Code: 506-124This simple to use instrument shows both temperature and relative humidity on a clear LCD display. The internal memory stores the maximum and minimum temperature since the last reset. Ideal for installing in a greenhouse, propagator or vegetable store. ±Designed for wall-mounting. ±Shows temperature and humidity. ±Maximum/minimum internal memory.Kew Pattern Masons Hygrometer supplied with Conversion ChartProduct Code: 506-104A high quality hygrometer with accurate, stem-divided, mercury-filled thermometers made to British Meteorological Office design. The thermometers are fitted to laminated plastic mounts with indelible dividing and figuring. The mounts themselves are fitted to a laminated plastic back-plate which will not warp and is very strong. The water reservoir is supported by a metal strip attached to the back plate, and the bulb of one thermometer is kept constantly wet by capillary action. A cotton wick runs up from the reservoir and is threaded round a circle of muslin covering the bulb.Further Information:Temperature ranges -20°C to +55°C, complete with simple slide rule. 360 x 160 x 50 mmAccessories:Threaded Muslins and Wicks (506-104/12)Wet & Dry Bulb HygrometerProduct Code: 506-106The wet and dry bulb hygrometer is designed for general use and consists of two undivided thermometers mounted on a printed plastic scale. Between the thermometers is a unique slide pointer which allows relative humidity to be easily read. The scale is housed in a plastic case which also holds a reservoir with anti-frost device. ±Easy to read. ±Use outdoors in a screen.Further Information:Easy to read pattern, range -5°C to +50°C.Portable Humidity & Temperature Meter with Dewpoint & Wet Bulb Temperature MeasurementProduct Code: 506-160A hand-held instrument that displays relative humidity, temperature and dew point.SpecificationsRange-10°C to 60°C / 0% to 100% RHAccuracy23°C ± 5 K: 1% RH, 0.2 K332MeteorologyEnvironmental TestingHook Gauge Evaporimeter with Aluminium PanProduct Code: 506-250Because of the recognition of the accuracy of this instrument, reliable equations have been devised by which the readings obtained may be converted into useful figures for evaporation from lakes and reservoirs. The water level in a standard cylindrical tank (1220 mm diameter) is measured, usually every 24 hours, by adjusting the height of a hook until its point just breaks the surface. The measurement is taken inside a still-well which provides a small area of water surface free from ripples. The still-well, made of brass, stands on three levelling screws and has an opening in the base to equalise the water levels inside and out. The hook gauge, also brass, rests on top of the well supported by three horizontal arms, and has a micrometer head to provide very fine adjustment. A useful accessory is a maximum/minimum thermometer which floats just under the water surface in the main tank. A magnet is supplied for resetting the indices. ±Measures evaporation rate from a free water surface. ±Used by meteorologists and water engineers throughout the world. ±Manufactured to the American Weather Bureau pattern.Further Information:Consisting of hook gauge, still-well and galvanised iron tank as specified. Supplied without floating thermometer.Spares/Consumables:Class A Evaporation Tank (506-250/10)Hook Gauge (506-250/14)Still-Well (506-250/12)tel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.comEvaporation MeasurementClass A Evaporation TankProduct Code: 506-250/10SpecificationsDimensions (mm)1220 diameter x 254 heightWeight (kg)64Still-WellProduct Code: 506-250/12SpecificationsDimensions (mm)215 x 254 x 254Weight (kg)18Hook GaugeProduct Code: 506-250/14SpecificationsDimensions (mm)165 x 115 x 115Weight (g)340333MeteorologyEnvironmental Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 200Atmospheric Pressure MeasurementPrecision Aneroid Barometer 890-1050 mbProduct Code: 506-042The precision aneroid barometer is used for measuring the absolute atmospheric pressure. The motion of the aneroid barometer is conducted to the axle of the pointer by driving a segment and wheel with an excellent fine finish of the gearing and bearings. This instrument has only got a minimum of idle friction because of the advantageous shape of the bearings and levers. Housing chromed brass with screw on flange diameter 165 mm.SpecificationsMeasuring Range760 to 960 hPa / 570 to 720 mm Hg (800 to 2000 m above sea level)Accuracy± 0.7 hPa / ± 0.5 mm HgScale Division0.5 hPa / 0.5 mm HgDial (mm)130Chart Recording InstrumentsThermo-Hygrograph -15°C to +65°C 0-100% RH, complete with 1 Year Supply of Charts & 2 Spare PensProduct Code: 506-206This combination instrument records both temperature and relative humidity on the same chart.Further Information:Mechanical movement, supplied with 52 weekly charts and a bottle of ink.Spares/Consumables:Weekly Charts for Thermo-Hygrograph Pack of 52 (506-206/12)Refillable Black Fibre Pen for Chart Recording Instruments. (506-212)Hygrograph 0-100% RH complete with 1 Year Supply of Charts & Spare PenProduct Code: 506-203The hygrograph uses hair to detect changes in humidity. The expansion or contraction of the hair is transferred into a vertical movement which is recorded on the revolving drum.Further Information:Mechanical movement, supplied with 52 weekly charts and a bottle of ink.Spares/Consumables:Weekly Charts for Hygrograph Pack of 52 (506-203/12)Refillable Black Fibre Tip Pen for Chart Recording Instruments (506-212)Barograph, 955-1055 mb complete with 1 Year Supply of Charts & Spare PenProduct Code: 506-204The barograph uses a vacuum capsule to detect changes in atmospheric pressure. The expansion or contraction of the capsule is transferred into a vertical movement which is recorded on the revolving drum.Further Information:Mechanical movement, supplied with 52 weekly charts and a bottle of ink.Spares/Consumables:Weekly Chart for Barograph Pack of 52 (506-204/12)Refillable Black Fibre Tip Pen for Chart Recording Instruments (506-212)Thermograph -15°C to +65°C complete with 1 Year Supply of Charts & Spare PenProduct Code: 506-201The thermograph uses a bi-metallic element to detect changes in temperature. The expansion or contraction of the element is transferred into a vertical movement which is recorded on the revolving drum.Further Information:Mechanical movement, supplied with 52 weekly charts and a bottle of ink.Spares/Consumables:Weekly Chart for Thermograph Pack of 52 (506-201/12)Refillable Black Fibre Tip Pen for Chart Recording Instruments (506-212)334MeteorologyEnvironmental Testingtel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.comManual Weather StationsStevenson ScreenProduct Code: 504-120The Stevenson screen is designed to hold maximum and minimum thermometers, and a wet-and-dry bulb hygrometer. It is available either in the finished form, ready for use, or more cheaply as a make-it-yourself kit. Both are suitable for use in all climates. The screen is made from top quality seasoned wood, with double-louvred sides, a double layer roof, and a floor of overlapping boards separated vertically by an airspace. The front panel is hinged at the bottom to form a door, and is retained in the horizontal position by two chains; it may be padlocked shut.Further Information:Supplied without instruments or stand, painted white to reflect radiation.Interior dimensions 435 x 250 x 445 mm.Accessories:Iron Stand for Stevenson screen (504-120) (504-124)Budget Weather StationProduct Code: 461-050This package of equipment provides low cost but accurate instruments to enable daily weather readings to be taken. Instruments include a maximum and minimum thermometer, soil thermometer, wet and dry bulb thermometer and Rain-o-matic electronic raingauge. A simple DIY screen is provided to house the thermometers.335MeteorologyEnvironmental Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 200Weather and Monitoring StationsEnvironmental Weather StationThe Environmental Weather Station provides an automatic method of recording a wide range of meteorological and environmental data. It overcomes the problem of manual recording methods and replaces them with a simple to use data logging system which can be left unattended in remote areas and harsh environments. The data can be collected at convenient intervals using a portable computer. Environmental Monitoring StationProduct Code: SP509-1039 Channel Logger: ±Anemometer (Wind Speed) with 3 metre Cable Connector. ±Wind Direction Vane with 3 metre Cable and Connector. ±Relative Humidity and Temperature Probe. ±Pyranometer Sensor with Levelling Unit, 3 metre Cable and Connector. ±Raingauge with 6 metre Cable and Connector. ±Barometer with 3 metre Cable and Connector. ±Evaporation Pan and Gauge with 3 metre Cable and Connector, Solar Power System, 2 metre Portable Mast Mounted on Meta; Plate with Guylines and Pegs.Accessories:Wind Monitoring System (509-110)Wind Monitoring System with Solar PanelProduct Code: 509-112 ±Wind Monitoring System, comprising Logger with batteries, Wind Sensors and Pole Mounts. ±Solar Power Pack. ±Portable 2 metre Mast mounted on Metal Plate, with Guylines and Pegs.336MeteorologyEnvironmental Testingtel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.comWind Monitoring SystemProduct Code: 509-110Comprising of: ±8 Channel Logger. ±Anemometer. ±Wind Vane. ±Relative Humidity and Temperature Probe. ±Pyranometer. ±Barometer. ±Rainguage. ±Soil Temperature Probe. ±2 Metre Mast and Solar Panel.Automatic Weather StationProduct Code: 509-105Comprising of: ±Logger with batteries. ±Windspeed and Wind Direction Sensors. ±Pole Mounts. ±2 Metre Mast with Metal Plate. ±Guylines and pegs.337Crop ScienceEnvironmental Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 200MicrobiologyHand LensProduct Code: 535-208Complete with 15 mm diameter achromatc lens mounted in metal case.Further Information:Magnification x10.Colony CounterProduct Code: 535-210/01The petri dish is placed on the viewing screen and every time a colony is pressed a count is registered and accompanied by an audible tone. Both the amount of pressure needed to register a count and the volume of the tone are adjustable. The built-in adjustable magnifier enables samples to be examined more easily. For use with up to 100 mm glass or plastic petri dishes. ±Uniform glare-free illumination. ±Angled front for operator comfort. ±Counter triggered by depressing petri dish. ±Digital display of results. ±Built-in magnifier.Further Information:220-240 V AC, 50 Hz, 1 ph.Single Tullgren FunnelProduct Code: 535-245/01This apparatus is used for both dry and wet extraction of soil organisms. A soil or leaf litter sample is placed in the removable upper part of the funnel. Heat and light from the lamp creates a temperature gradient of approximately 14°C in the soil sample. This stimulates the downward movement of soil arthropods, and similar organisms, through the gauze to a receiver attached to the base of the funnel. The position of the lamp is adjustable to enable the temperature of the soil to be raised gradually, thus preventing the slower moving species from becoming trapped in hard dry cakes of soil. For wet extraction, the funnel is filled with water and the gauze is placed in position. Nematodes and other swimming forms collect in the base of the funnel and can be drawn off at intervals (this method is suitable for collecting potato eel worm). This method can be used either with or without the use of the lamp. ±Wet or dry extraction of soil organisms. ±Precision aluminium funnel construction. ±Stoppered collection vessel prevents loss of creatures.Further Information:220-240 V AC, 50 Hz, 1 ph.Complete with funnel, wire gauze, soil retaining cylinder, length of rubber tube, lamphouse with lampholder, retort stand and instructions.Spore Sampler complete with Sampler, Wind Vane, Rain Shield, Drum, Cutting Block, 1 kg Gelvatol, Tape, ScalpelProduct Code: 535-260/01The spore sampler uses a pump to draw air through an orifice. Fungal spores and pollen are impacted onto a strip of adhesive coated plastic strip fitted to the clockwork driven drum. The sampling head can revolve and a large fin is fitted so that air is always drawn from upwind. ±Continuous sampling for up to 7 days. ±Built-in vacuum pump. ±7 jewel clockwork recording drum.Further Information:220-240 V AC, 50 Hz, 1 ph.Plant PhysiologyPlant Water Status Console (No Tank)Product Code: 540-31012 inch Pressure Vessel, G4 Specimen Holder, 40 Bar Gauge. Tension in plant xylem can be measured using a plant water status console device. The petiole of a leaf or stem is placed in a rubber grommet so the leaves are inside the pressure chamber and the stem is outside at atmospheric pressure. By pressurising the chamber and watching the point where the sap oozes out of the stem at atmospheric pressure, the two forces are in balance. Further Information:Various sizes of Specimen Holders, Pressure Vessels and Gauges are available upon request. Plant Water Status Console with TankProduct Code: 540-315The Plant Water Status Console is supplied with a compressed gas cylinder and connected to a pressure regulator for field operation. The pressure regulator has been set at the factory for the maximum operation pressure of the unit which, for standard units, is 600 psi. Further Information:Various sizes of Specimen Holders, Pressure Vessels and Gauges are available upon request. Portable Leaf Area MeterProduct Code: 470-010/01The portable leaf area meter enables samples to be measured without detaching them from the plant. The unit is operated using only two buttons to select options from the display. Individual readings can be stored, or areas can be accumulated as a running total. The unit is supplied with an RS 232 cable and IBM compatible software. This enables data to be transferred to a computer for further analysis if required. A full range of parameters can be measured including leaf area, width, perimeter length, shape factor and ratio. The sensitivity of the scanner can be adjusted so that healthy or diseased parts of the leaf can be recorded. This flexibility makes the instrument ideal for the field scientist investigating the effects of pollution on plants. The leaves do not have to be removed for measurement so the same plant can be monitored over a period of time in detailed experiments. ±Enables non-destructive measurements. ±Lightweight and fully portable. ±No calibration required. ±32 K internal memory. ±Rechargeable battery.Further Information:For 220-240 V AC, 50 Hz, 1 ph.338Crop ScienceEnvironmental Testingtel: +44 (0)1525 249 200 • email: ele@eleint.co.uk • www.ele.com339Crop ScienceEnvironmental Testingwww.ele.com • email: ele@eleint.co.uk • tel: +44 (0)1525 249 200Plant Photosynthesis Analyser with Battery, 120-240 V AC, 50-60 Hz, 1phProduct Code: 470-020/09The plant photosynthesis analyser enables the scientist to investigate growing plants either in the field or laboratory. Since the plant is not damaged by the analysis it can be repeatedly tested under different conditions to observe the results. The leaf chamber is placed over the selected sample and a measured flow of air is pumped over the leaf surface. Sample data is typed into the keypad when requested. This includes leaf area details which can be estimated or measured using the Portable Leaf Area Meter. The concentrations of the carbon dioxide and water vapour in the incoming air are measured. By comparing these with the outgoing concentrations, the gas exchange rate and photosynthetic rate are calculated and shown on the display. Data is stored on removable cards and can be transferred to a computer via the built-in RS 232 port. ±Fully portable. ±Built-in self-checking system. ±Data storage. ±Automatic atmospheric pressure compensation.Further Information:Complete with battery, charger, carrying bag, harness, air probe and spare parts. Requires a leaf chamber for use.Plant Efficiency Analyser with Control Unit & Sensor, Field Neck Support & Strap, ChargerProduct Code: 470-040When light shines on a plant it is absorbed by the chlorophyll molecules in the leaf. The absorbed energy is then utilised in a variety of ways including photosynthesis, the process by which carbon dioxide in the atmosphere is converted by the plant to organic compounds. A proportion of the absorbed energy is re-emitted as chlorophyll fluorescence. The Plant Efficiency Analyser measures this fluorescence and calculates key parameters to provide a direct measurement of photochemical efficiency and thus indicate stress conditions at an early stage. Many factors may influence the well-being of plants including the temperature and light conditions, shortage of water or nutrients, contaminated soil, air pollution and acid rain. All of these have an effect on chlorophyll fluorescence making this an ideal instrument for the serious study of plant health, crop selection or plant breeding. ±Lightweight, compact, portable field instrument. ±No moving parts for reliable operation. ±State-of-the-art microprocessor and logic control. ±Fast accurate measurement and calculations. ±PC link and analysis software included.Further Information:Includes carrying bag, sensor unit, battery charger unit, serial cable, analogue lead, instruction manuals, 20 leaf clips, and data analysis software for IBM PC compatible computers supplied on 5.25 inch and 3.5 inch discs.Spares/Consumables:Leaf Clips 4 mm Pack of 10 (Spare for 470-040). (470-040/10)Chlorophyll Content Meter for Plants & Crops with Battery, RS 232 Cable & SoftwareProduct Code: 470-045This instrument has been designed to accurately determine the chlorophyll content in plants and crops. Especially useful for improving Nitrogen management programs and is ideal for research and teaching. The ample on-board data storage and hand-held design makes this meter the most field efficient chlorophyll content meter on the market. ±Accurate and reliable results. ±Non-destructive. ±Lightweight, hand-held design. ±Storage of 160,000 data sets.Next >