ReviewsTemperature Compensated Salinity Tester

AERO-GRO 5-in-1 TDS/pH Meter - IP67 Waterproof 5 Functions pH TDS EC Salinity Temperature 0.01 Resolution High-Accuracy Pen-Type Tester for Hydroponics Water Wine Spas Aquariums White

• [5-in-1 pH METER] - Meter has a five-in-one function, which can measure PH, TDS, EC (Electrical Conductivity), Salinity %, Salinity ppm, and....
• [Accurate pH Tester] - Featuring a solid glass probe, you can get a full measurement range of 0-14pH, 0.01 pH resolution. The pH meter uses a 3-point....
• [TDS Measurement] - Fast and accurate TDS / PPM testing for hydroponics or anywhere TDS is critical. The TDS Range is 0~10,000ppm. Accuracy is ±2%..
• [EC Measurement] - Measure Electrical Conductivity of either fresh or salt water..
• [Saline % and Saline ppm Measurement] - Conveniently and easily keep track of saline levels by either percentage or ppm. Great for aquarium, saltwater....

RF Oscillator Module, VCO 515MHz-1150MHz Voltage Controlled RF Oscillator Frequency Source Broadband Oscillator Module

• [Strong compatibility]:For Yaesu FT-817/857/897 and other models for temperature-compensated crystal components, fully compatible with the original TCXO-9..
• [High stability]:he frequency is 22.625MHz, which can improve the stability of the machine after replacing the original crystal. It is superior to the original module in different environments..
• [High cost performance]:The price is only 15% of the original module, and the cost performance is extremely high..
• [Effect is remarkable]:Actual test the frequency of the crystal is observed with a high-precision frequency meter. The original crystal frequency is deflected with a fire-baked , but this temperature-compensated crystal has no obvious change, and the effect is remarkable..
• [Simple operation]:Turn off the power of the machine, open the cover of the machine, find the position where the temperature compensation crystal is installed. You need to unplug the ordinary crystal of the machine, then insert it according to the stitching of the machine. After installation, you can start using it without any settings..

Water Quality Tester EZ-9909 5 in 1 Function Water Quality Testing Meter PH Salinity TDS EC Tester with Backlight for Aquaculture Drinking Water Swimming Pool

• EZ Grow Systems 5in1 Water Multifunctional Tester can test PH, TDS,EC, salinity and temp of distilled water and drinking wate.
• Water hardness test kit have been calibrated, It can be used normally for one year. Operation temp is 0.1-60 ℃ (32-140℉). the test error is....
• Automatic temp compensation(ATC) Fast calculation, backlit LCD, Easy to read data, The water hardness test kit Small appearance, easy to carry.....
• EZ Grow Systems 5 in 1 multifunctional water quality tester is suitable for drinking water, water osmotic system, hydroponic plants, aquarium water....
• When LCD display is fuzzy, The battery needs to be replaced. The battery model is LR44, 1.5V*3,Pay attention to “+”&”-“..

The EC Reader - 1950 - Birth of the New Trend (The Chronological EC Comics Review)

Extech DO700 Portable Dissolved Oxygen Meter

• Measures dissolved oxygen concentration/saturation, pH, mV, conductivity, TDS, salinity, resistivity and temperature.
• Automatic salinity compensation and manual barometric pressure compensation for DO measurements.
• One button pH calibration (4, 7, and 10pH).
• Choice of 3 point pH calibration for better accuracy.

testo 550 I Digital Manifold Kit for air conditioning, refrigeration systems and heat pumps - with Bluetooth support

• Efficient: The testo 550 with its sturdy housing and 2-way valve block was particularly created for harsh environments and offers data storage for up to 60 refrigerants.
• Accurate: Thanks to two temperature compensated pressure sensors, the wireless manifold determines high and low pressure as well as evaporation and condensation temperature.
• Multiple functions: The digital manifold features the display of temperature difference, temperature compensated leakage tests and calculation of superheating and subcooling.
• Set: Includes two pipe clamp temperature probes (two channel NTC temperature inputs) for reliable measurement, as well as a protective hard-shell case.
• Smart App: Conveniently follow all measurements via Bluetooth from a smartphone or tablet. Send results directly from the job site for a more convenient documentation.

Display Digital Signal Frequency Counter PLJ 6LED H LED Signal Generator Cymometer Tester Frequency Measurement Modules Adjustable Module 0.1~1000MHz(Backlight Font red)

• Test Accuracy: The frequency meter is designed with dual intermediate frequencies. The intermediate frequency value and the addition and subtraction mode can be preset separately without affecting each other, which can achieve high stability and high resolution. The tester has good sensitivity, better than 60mVPP.
• Excellent Performance: The frequency reference uses a temperature compensated voltage controlled crystal oscillator. The display driver adopts LED display special chip, the digital tube has high brightness and less external interference.
• Small and Convenient: This module is compact and exquisite in design, can be put into a pocket, does not occupy extra space, is convenient to carry, and has reliable performance, good visual effects, and low cost.
• Convenient to Operate: The circuit of the frequency meter is simple, the design structure is reasonable, and the unique two key control method and precise time algorithm are used to make the operation simple and fast.
• Multi Function: The circuit is simple, the structure is reasonable, double button control, and the operation is simple. Each setting is automatically saved, and the power is on.

Ade Advanced Optics aaosal Professional Automatic Temperature Compensation Sea Water Salinity Refractometer for Aquarium, Hydrometer, 0-100 ppt and 1.000-1.070 Salinity S.G.

• Resale quality - 50 percent heavier than the soft case cheap units.
• Automatic temperature compensating refractometer.
• Aircraft aluminum body, premium optical lens, rubber eye guard.
• Dual salinity scale - 0-local stock for fast shipment 100Ppt & 1.000-1070 salinity sg.

ZRM&E Seawater Hydrometer for Aquarium Aquaculture Seawater Densimeter Ocean Hydrometer Salinity Meter for Fish Tank Salinity Specific Gravity Test

• Made of high quality plastic, aquarium transparent, automatic accurate reading brine hydrometer.
• Accurate, durable and easy to read salt and specific gravity of your marine aquarium, small and waterproof. If the specific gravity is between 1.000-1.019, it indicates that the specific gravity is low.
• if the specific gravity is between 1.020-1.023, it indicates that the specific gravity is normal.
• if the specific gravity is between 1.024-1.030, it indicates that the specific gravity is high.
• The external range of the scale indicates salinity (PPT), and the internal range of the scale indicates gravity. And clearly mark the safe area. Application range: 0-40 degrees (1.000-1.030). If the salinity PPT is between 32-40, it indicates that the salinity is high.
• if the salinity PPT is between 27-31, it indicates that the salinity is normal.
• if the salinity PPT is between 0-26, it indicates that the salinity hydrometer is low.
• Wide range of applications: Suitable for salt water and sea water fish tanks. Perfect for testing salinity and specific gravity of saltwater and seawater tanks, including solubility and specific gravity scales. Suitable for fresh water and sea water.
• Easy to read swing arm pointer and ultra wide stable base can provide accurate test results.

Electro Faustus Blackfly Modular Spring Activated Instrument Eurorack Module

• DS3231 16-pin memory chips - AT24C32 ,extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal..
• Integrated oscillator improve long-term accuracy of the device and reduces the number of components of the production line..
• Provides two configurable alarm clock and a calendar can be set to a square wave output. Address and data are transferred serially through an I2C bidirectional bus..
• Highly accurate RTC completely manages all timekeeping functions.The device incorporates a battery input, disconnect the main power supply and maintains accurate timekeeping..
• A precision temperature-compensated voltage reference and comparator circuit monitors the status of VCC to detect power failures, provide a reset output. In addition, RST pin is monitored as generating a μP reset..

Pen Type Salinity & Temperature Meter ATC NaCl Salt Water Quality Tester for Saltwater Aquarium Hydroponics Food

• MEASURING RANGE: 0~9999 ppm or 10.0ppt~100.0ppt or 0.0%~10.0% or 0.950~1.080 (S.G.) based on NaCl with ±%F.S ±1 digit / ±0.5°C Accuracy.
• DISPLAY: Dual Temperature and Salinity in four measurement units (ppm, ppt, %, S.G) / 30 x 18mm LCD Size.
• APPLICATION: Salinity measurement in fish pond, tank, aquariums, laboratories, food processing, hydroponics, Aquaculture, and other water monitoring facilities..
• FEATURES: Waterproof IP65 / One touch calibration / Auto power off and Non-Sleep mode disable / Multi points calibration.
• POWER SUPPLY / SENSOR : 4 x LR44 button batteries.