 |
 Gossen 4056 Mavolux 5032C Digital Footcandle and Lux Meter  US $199.00
|
 Xtune Color LED Digital Volt Meter 52mm JDM Sport Gauge US $36.99
|
 2 52mm Digital LED Boost Meter Smoke len Auto Gauge US $42.33
|
Meter Digital
Differences with the pH Readings between Two Meters
There are observed differences in the field between two pH meters' readings. This can get many growers confused with the true value of the pH of the medium on which their plants grow. This article will help answer the confusion of the readings.
The acidity or alkalinity of the soil or solution, which is very important with growing plants, is measured with a pH meter. pH, or the power of Hydrogen, is the concentration of H+ ions for acidic solutions and OH- ions for basic solutions. The pH is a critical factor in the plant's growth as it is directly related to the availability of the nutrients.
This is especially important when it refers to hydroponic growing.
Some growers noticed that their pH readings usually fluctuate when tested with two different meters in the same nutrient solution. There are several reasons that can be attributed for this fluctuation.
One of the possible reasons is that the two pH meters use different brands of batteries. One set of batteries used in one pH meter might be older than the other battery used in the other meter.
Though the batteries supply the same voltage, the power from older batteries is normally weaker than the newer one. A, even a slight corrosion on batteries can also cause differences in pH readings.
Unseen dirt on probes can also affect the pH reading's accuracy. Therefore, probes need to be cleaned regularly to prevent the accumulation of dirt and salt crystals.
Growers need as well to understand that pH meters have a limitation in the accurate measurement of the pH value. Hobby meters, which are usually used by growers, might display a slightly different reading from the laboratory bench meters.
Hobby meters can cost up to $250 but they are cheaper versions in contrast to the laboratory pH meters. Laboratory pH meters are priced around $1000. Nevertheless, if the difference is just 0.3 or less, this difference is not that significant to generalize that the pH meter reading from the hobby meters is inaccurate. Thus, growers need not to worry about their pH readings from hobby meters. After all, who would spend a thousand dollars for a typical hydroponic garden?
Digital readouts pH meters have the advantage of being easier to read and more accurate in pH value as it eliminates the human error in gathering the data and interpretation. Moreover, digital types have wider pH range readout than the analog type.
Lastly, after the digital pH meter is calibrated, the scale on the display does not limit the pH range that the meter can measure with acceptable accuracy.
About the Author
http://www.BluelabAssist.com/ manufactures the World's best hand-held PH meter for measuring pH, conductivity and temperature of a liquid. Our equipment has a 5 year Guarantee and Free Shipping world wide
Can you tap power above the meter with a digital meter that same way you can with a normal meter?
Regardless of the method by which they meter the flow of energy, you can always tap in above the meter. Question is, have they built some kind of detection capability into the meter.
I'm not sure how it would be done, maybe by measuring the back resistance to a known point, which would have been set during meter install. But I doubt it.
Digital LC meter
 |
HM Digital TDS-EZ Meter/Tester, Water/ppm/Purity/Filter List Price: $47.50 Sale Price: Too low to display  |
|
Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. Fun, translucent blue housing that's very strong and durable. Includes a TDS chart sticker on the back of the meter that explains TDS values... |
 |
Taylor 1470 Digital Cooking Thermometer/Timer List Price: $25.99 Sale Price: $10.95 Used From: $10.00 |
|
Opening the oven to check on a food's temperature means wasting the cook's time and losing oven temperature and moisture--not to mention a face full of steam. This thermometer prevents those problems. Insert the instrument's 6-inch stainless-steel probe into a roast beef or turkey and monitor the time and temperature (from 32 to 392 degrees F) on the thermometer's large digital display, which connects to the probe with a 4-foot cord... |
 |
Milwaukee Instruments PH600AQ Ph Tester With 1 Point Manual Calibration List Price: $31.99 Sale Price: $15.99 |
|
pH range: 0.0 to 14.0 pH, with one point manual calibration and accuracy of_+ 0.2 pH. Battery Life: 700 hours. Calibration solution sold separately. 30 day warranty. |
 |
HDE Temperature Gun Infrared Thermometer w/ Laser Sight List Price: $71.99 Sale Price: $11.00 |
|
Available in red or yellow. |
 |
Kidde KN-COPP-B-LPM Battery-Operated Carbon Monoxide Alarm with Digital Display List Price: $54.49 Sale Price: $23.37 |
|
Kidde’s KN-COPP-B-LPM battery-operated carbon monoxide alarm with digital display helps to provide your home with extensive protection against the dangerous threat posed by the odorless and colorless gas... |
 |
Accutire MS-4021B Standard Digital Tire Gauge List Price: $14.99 Sale Price: $7.99 |
|
Reads 5-150 PSI in 1/2-lb. units. Backlit display. Rubberized handle. Auto on/off. Lifetime lithium battery. Max. PSI: 150 |
 |
Shaun of the Dead Sale Price: $5.99 |
 |
Avia II List Price: $49.99 Sale Price: $35.95 |
|
Avia's latest entry into TV and audio configuration strikes a fine balance between being friendly to newcomers and satisfying to home theater gurus. Navigating the disc is easy, as it is logically divided into ten main topics that are further divided into chapters... |
 |
Sound & Vision Home Theater Tune-Up List Price: $19.95 Sale Price: $69.95 Used From: $17.92 |
|
Sound & Vision, the world's largest audio/video magazine, has teamed with Ovation Software, the leading authority on A/V equipment calibration, to bring you this comprehensive, entertaining, and simple-to-use guide to hooking up, operating, and adjusting your home theater for the absolute best performance! Whether you're a novice or enthusiast, you'll find step-by-step instructions, exclusive video patterns and audio tests, and helpful tips for hooking up, adjusting, and operating your system! Exclusive, user-friendly video test patterns, Audio Tune-up with exclusive test signals designed by Sound & Vision Technical Editor David Ranada, including speaker ID/balance for 5... |
 |
IOGEAR USB 2.1 Bluetooth Micro Adapter (GBU421) List Price: $16.95 Sale Price: $9.99 Used From: $19.88 |
|
IOgear GBU421 Bluetooth 2.0 USB Micro Adapter GBU421 Network Adapters - Wireless |
|
|
Nady DSM-1 Digital SPL Meter $99.99 Nady DSM-1 Digital SPL Meter |
|
|
Nady Dsm-1 Digital Spl Meter $99.99 Nady DSM-1 Digital SPL Meter |
|
|
Mini Wright Digital Peak Flow Meter $99.99 Mini Wright Digital Peak Flow Meter |
|
|
LCD Digital Clock Thermometer and Humidity Meter $9.52 LCD Digital Clock Thermometer and Humidity Meter |
|
|
VWR Replacement Probe for Digital Conductivity Bench Meter $234.96 VWR Replacement Probe for Digital Conductivity Bench Meter |
|
|
Health O Meter Adapter for Digital Floor Scale $24 Health O Meter Adapter for Digital Floor Scale |
|
|
ProMariner / ProMariner Handheld Digital Multi Meter / 87730 $32.1 ProMariner - ProMariner Handheld Digital Multi Meter - 87730 |
|
|
Thermor / Digital Soil Moisture Meter / 304BC $29.17 Thermor - Digital Soil Moisture Meter - 304BC |
|
|
Nxg Basix Digital Coax 2 Meter $2.99 NXG BASIX DIGITAL COAX 2 METER |
|
|
Nxg Basix Digital Coax 20 Meter $5.99 NXG BASIX DIGITAL COAX 20 METER |
|
|
Nxg Basix Digital Coax 4 Meter $3.99 NXG BASIX DIGITAL COAX 4 METER |
|
|
Nxg Basix Digital Coax 6 Meter $3.99 NXG BASIX DIGITAL COAX 6 METER |
|
|
Nxg Basix Digital Coax 10 Meter $4.99 NXG BASIX DIGITAL COAX 10 METER |
|
|
Nxg Digital Coaxial Cabl 1 Meter $3.99 NXG DIGITAL COAXIAL CABL 1 METER |
|
|
Nxg Digital Coaxial Cabl 10 Meter $4.99 NXG DIGITAL COAXIAL CABL 10 METER |
|
|
Nxg Digital Coaxial Cabl 2 Meter $3.99 NXG DIGITAL COAXIAL CABL 2 METER |
|
|
Nxg Digital Coaxial Cabl 20 Meter $6.99 NXG DIGITAL COAXIAL CABL 20 METER |
|
|
Nxg Digital Coaxial Cabl 3 Meter $3.99 NXG DIGITAL COAXIAL CABL 3 METER |
|
|
Nxg Digital Coaxial Cabl 6 Meter $4.99 NXG DIGITAL COAXIAL CABL 6 METER |
|
|
Nxg Basix Digital Coax 1 Meter $2.99 NXG BASIX DIGITAL COAX 1 METER |
|
|
Digital Satellite Signal Strength Meter W/Tone $30.99 DIGITAL SATELLITE SIGNAL STRENGTH METER W/TONE |
|
|
Meter, Digital Soil pH $39.99 Knowing your soils pH will allow you to make the adjustments necessary for beautiful flowers, bountiful crops and the best looking lawn in the neighborhood! The Digital PLUS Soil pH Meter is programmed with plant pH preferences for 400 fruits, vegetables, grasses, and landscape plants. |
|
|
Meter $6 Meter |
|
|
Digital Plus Moisture Meter $21.95 Digital Plus Moisture Meter The Key to Gardening Success The latest technology in moisture meters - the range from 0 to 9.9 signifies increasing wetness. Knowing your plant's moisture requirements will allow you to make the adjustments necessary to your watering routine for a green lush lawn, beautiful flowers, shrubs, and house plants. This Digital Plus Moisture Meter has an extensive list of over 150 plants built in to the meter showing preferred moisture levels and special needs for all. It even tells you how often to check each plant. Can be used indoors or out - great for lawns & gardens too. Allows You to Build a List of the Plants You Check Frequently Basic Mode Goes Directly to the Soil Moisture Test Screen Built in Database of Over 150 Plants Shows Ideal Moisture Level for Each Plant Moisture Levels Read From 0 to 9.9 13"L x 4"W x 2"H Ships Quickly! |
|
|
Gossen Digiflash Digital Exposure Meter $199.99 This digital exposure meter features an LCD readout in 1/3-stop increments and a setting ring to easily read the shutter speed and f-stop combinations. The compact design offers easy portability. |
|
|
Handheld TDS-3 Meter - Meter $37.99 Check the function of your RO membrane and DI resin with this handy TDS3 (total dissolved solids) meter. Includes batteries. Comes precalibrated. Hold Function saves measurements for convenient reading and recording. Auto-off function. Measurement Range: 0-9990 ppm. From 0-999 ppm, in increments of 1 ppm; from 1000 to 9990 ppm, in increments of 10ppm. Built-in digital thermometer. Factory calibrated with 342 ppm NaCl solution; recalibrate with mini-screwdriver. Automatic temperature compensation. |
|
|
Health O Meter Scale Carry Case for Digital Pediatric Scale $119.09 Health O Meter Scale Carry Case for use with Health O Meter Portable Digital Pediatric Scale (HOM-549KL). |
|
|
Health O Meter Carry Case for Portable Digital Pediatric Scale $125.55 Health O Meter Carry Case for use with Health O Meter Portable Digital Pediatric Scale (HOM-553KL). |
|
|
Gossen Digisky Digital Exposure Meter $449.99 This digital exposure meter measures incident, reflected and flash light in 1/10-, 1/3-, 1/2- and 1/1-stop increments and features an Elinchrom Skyport system for wireless triggering support. The TFT-LCD screen lets you easily read your measurements. |
|
|
Tascam 24 Channel Meter Bridge for Tascam DM-3200 Digital Console $2970 Tascam 24 Channel Meter Bridge for Tascam DM-3200 Digital Console |
|
|
Health O Meter Adapter for Portable Digital Pediatric Scale $24 Health O Meter Adapter for Portable Digital Pediatric Scale |
|
|
Pyle Audio / MINI DIGITAL SOUND LEVEL METER / PSPL01 $48.81 Pyle Audio - MINI DIGITAL SOUND LEVEL METER - PSPL01 |
|
|
RMIL / NXG BASIX DIGITAL COAX 4 METER / NXB-154 $14.14 RMIL - NXG BASIX DIGITAL COAX 4 METER - NXB-154 |
|
|
RMIL / NXG BASIX DIGITAL COAX 1 METER / NXB-151 $14.14 RMIL - NXG BASIX DIGITAL COAX 1 METER - NXB-151 |
|
|
RMIL / NXG BASIX DIGITAL COAX 2 METER / NXB-152 $14.14 RMIL - NXG BASIX DIGITAL COAX 2 METER - NXB-152 |
|
|
RMIL / NXG BASIX DIGITAL COAX 20 METER / NXB-1520 $14.63 RMIL - NXG BASIX DIGITAL COAX 20 METER - NXB-1520 |
|
|
RMIL / NXG BASIX DIGITAL COAX 6 METER / NXB-156 $14.14 RMIL - NXG BASIX DIGITAL COAX 6 METER - NXB-156 |