14 best ph sensors

Product description

Digital PH Meter Water Tester

This pH meter is affordable and useful for those who need a PH tester for household and laboratory use. It's not only ideal for household or laboratory use.

Also suitable for testing pH balance of drinking water, pool, aquarium, food Project, RO system, Spa, or hydroponics.



Specifications:

✔ Measuring range: 0.00-14.00 pH

✔ Resolution: 0.01 pH

✔ Accuracy: 0.01 pH

✔ Batteries: 2X 1.5V LR44 (included)

✔ Automatic temperature compensation: 0-50℃(32-122℉)

✔ Dimensions: 15x2.5x1.3cm/6x1.1x0.5 inch

✔ Net Weight: 52g/1.83 oz



Features:

►High Quality and Durable It's highly accurate for measuring range of 0-14 PH, 0.1 PH resolution, measure & display pH result simultaneously with LCD diplay, reliable and quick reading.

►Easy to Use You just remove the protective cap and immerse the PH meter electrode in the solution and turn on the PH by "ON / OFF" switch to be measured. Beats the heck out of trying to see the colors of a litmus strip.

►Easy to Calibrate You can simply follow the instruction on the provided packet of solution 4.01 or 6.86, immerse the PH tester in the solution until numbers get stable.

►Pocket Size It's only 1.83 oz with size of 6x1.1x0.5 inch so that you can put it in your pocket wherever you go outside for a PH testing, it also comes with a handy storage case and 3 packets ph buffer powder for calibrating.

►Warning Tips Be careful with the glass probe since it may be a little fragile when you use. Remember to gently wipe it with a clean, soft cloth when you're done before capping it again.



Package Includes:

▶ 1 x PH Meter

▶ 1 x Carrying case

▶ 3 x PH buffer powder

▶ 1 x User's manual

• ✔HIGH ACCURACY: Ensure Your Pool, General Hydroponics Ph or Even Drinking Water Has a Perfect Ph Balance and Safe for Use with Tester Precision Ph Accuracy. Tester Has a Sensitive Electrode Sensor to Read Accurate Ph Levels. The Included Detailed Manual Will Show You How to Get the Best Accurate and Stable Reading
• ✔AUTO CALIBRATION: The Ph Meter Has an Auto Temprature Compensation Feature That Adjusts to Water Temperatures and Water Quality to Give Ph Readings Almost Instantly. As Well, You Can Calibrate the Tester with One Touch Button Using Buffer Powder.
• ✔AUTOMATIC TEMPERATURE COMPENSATION: No more need to take care about the temperature of testing liquid, as ph meter has built in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C - 80°C (32°F - 176°F)
• ✔WIDE USE: Ideal for Household or Laboratory Use, Suitable for Testing Ph Balance of Drinking Water, Pool, Aquarium, Ro System, Spa, or Hydroponics; Appropriate for Wide Range of Applications
• ✔MAKE YOU SATISFIED WITH THE PRODUCTS: Come with 1x PH meter, 1x user manual, 2x 1.5V LR44 button cells(build-in), 3x PH Buffer Powders

User questions & answers

Question:	Will this product work on urine
Answer:	Hi There! Thanks so much for your question. They should be about 1.5inches in length or longer. If there are any smaller pellets in your kit, contact us and we will send you replacements free of charge.
Question:	Rats? What do they have to do with a PH meter
Answer:	Hi There, Yes they are. Thanks and let us know if you have any other questions.
Question:	Does this meter come pre-calibrated or ready to use or do you have to calibrate out of the box
Answer:	The dissection is a one-time thing, but the figurines, weapons and dissection animal/ bug can be played with over and over
Question:	How do you calibrate
Answer:	No there is not

Product description

Overview:

PH0-14 Value Detect Sensor Module

Features:

Heating voltage: 5 ± 0.2V (AC DC)

Working current: 5-10mA

Detectable concentration range: PH0-14

Detection Temperature range: 0-80 ℃

Response time:≤5S

Settling Time:≤60S

Component Power:≤0.5W

Working temperature:-10-50 ℃ (nominal temperature 20 ℃)

Humidity: 95% RH (nominal humidity 65% RH)

Module Size: 42mm × 32mm × 20mm

Output:analog voltage signal output

With 4pcs M3 Mounting Holes

Note:

The color of item might be slightly different from the picture shown, which mainly lies in different light effect and computer monitor. Please give us your understanding. Thank you!

PH Electrode Probe BNC For Arduino:

The PH electrode has a single cylinder that allows direct connection to the input terminal of a PH meter, controller, or any PH device which has a BNC input terminal.

The PH electrode probe is accurate and reliable that can gives almost instantaneous readings.

Features:

PH range: 0-14 PH

Temperature range: 0-80℃

Zero-point: 7 ± 0.25PH

Alkali Error: ≤15 mv

Theoretical Percentage Slope: ≧98%

Internal Resistance: ≦250MΩ

Response Time: ≦1min

Operating Temperature: 0-60℃

Terminal Blocks: BNC plug

BNC Connector suitable for most PH meter and controller.

Suitable for wide range of application: Aquariums, Hydroponics, Laboratory etc.

Package Includes:

1pcs Liquid PH0-14 Value Detect Test Sensor Module

1pcs PH Electrode Probe Hydroponic Sensor BNC Interface

Note:

We will repackage this item to reduce shipping weight paper and bag waste. We guaranty the item will be well treated and protected. Let's protect the environment together!

Thank you for your understanding!

• Response time:≤5S;Settling Time:≤60S;Component Power:≤0.5W;Detectable concentration range: PH0-14;Module Size: 42mm×32mm×20mm;Output: analog voltage signal output;With 4pcs M3 Mounting Holes
• Working temperature:-10~50 ℃ (nominal temperature 20 ℃);Humidity: 95% RH (nominal humidity 65% RH)
• Package Includes: 1pcs Liquid PH0-14 Value Detect Test Sensor Module;1pcs PH Electrode Probe Hydroponic Sensor BNC Interface
• The PH electrode probe is accurate and reliable that can gives almost instantaneous readings;PH range: 0-14 PH;Temperature range: 0-80℃;Zero-point: 7 ± 0.25PH;Internal Resistance: ≦250MΩ,The color of item might be slightly different from the picture shown, which mainly lies in different light effect and computer monitor. Please give us your understanding. Thank you!

User questions & answers

Question:	Can I use this to measure pH in a salt water swimming pool
Answer:	I use these on exterior doors. The manual states that they are "weather resistant". From L1000 manual: "Durability D.O.D. Compliant 5220.22M for supplemental access control; weather resistant"
Question:	The sensor is not providing any difference using different liquids (the arduino code is giving a reading though)- does this mean a faulty sensor
Answer:	No the purpose of the key lock is if you don’t create a code to unlock the door. It works with either a key or code but you can not just lock it with a key, because if someone has a code they can still enter the door.
Question:	Can it be used to detect pH in soil
Answer:	Yes. It uses the Best/Arrow I/C(Interchangeable Core) system. It's not compatible with Schlage.
Question:	Hello. I'd like to know if this sensor can be in the water permanently
Answer:	6 digits and only a single combination. Hope that helps!

Product description

Simply the most reliable pocket pH tester with the best value for general-purpose pH testing e.g. hydroponics, horticulture, pools and spas, water treatment, beverage making, education, environmental monitoring, etc. Up to 3 points of Auto. calibration and 0 to 50˚C Auto temperature compensation (ATC), 0. 1 pH Accuracy with 0 to 14. 0 pH measuring range; Auto. recognition and indication of stable values improves repeatability, saving you the trouble of guessing when to manually hold measurement. PH20 comes with a complete kit of premixed calibration solutions (4. 00 and 7. 00), 4 AAA batteries, and a lanyard all in a portable carrying case. Smart Self-diagnosis, warning of incorrect buffer solutions and incorrect calibrations. IP67 water-resistant. Up to 2000 hours' operation powered by AAA alkaline batteries. The product is CE and RoHS certified, and is manufactured under an ISO 9001: 2015 certified quality system.

• Easy auto. calibration with buffer recognition; auto. temp. compensation (ATC) ensures accuracy in various temperatures (32 to 122F)
• Backed by Apera quality pH sensor with low impedance, ensuring high response rate
• Comes in a rugged carrying case with pH 4&7 buffers and a lanyard
• Auto recognition of stable values improves consistency, so you don't have to guess when to manually hold measurement
• Up to 2000 hours' continuous operation, powered by AAA batteries

User questions & answers

Question:	I will be using this meter once a month. Do I need storage solution for the probe
Answer:	Storing the probe in the storage solution helps keep the probe's sensitivity and accuracy. So it's a recommended practice. While storing the probe without any solution will not damage the probe, it's just going to cause the probe to lose its sensitivity and accuracy temporarily. Store the probe in the storage solution again for about 10 minutes, the sensitivity and accuracy can be restored.
Question:	Can anyone confirm if this comes pre calibrated
Answer:	The tester has been calibrated before they went out of the factory. But since there is a time gap before they reach our customers, we recommend doing the calibration with the included premixed buffer solutions before your first use.Thanks for your interest!
Question:	Can this be used to analyze urine
Answer:	Yes, it can tests urine with no problem. You can use the probe cap as a container for the urine.
Question:	How often does this pH meter need to be re-calibrated and/or how can I tell when it needs to be re-calibrated
Answer:	The manufacturer recommends keeping the device probe in a neutral storage solution; the protective tip case/container actually has a 'fill' line for guidance, and it is designed to hold a liquid safely when stored as indicated -- If someone uses distilled or deionized water by itself as a storage solution, the salts contained in the probe tip will dissipate and the probe will then need to be replaced--about $25, plus a fine headache trying to get it right. If you are out of storage solution keeping the probe wet somehow is better than dry--but don't store without the specialized solution for more than a day or so; these are typically $10-$13 for 100ml - 250ml size bottles on Amazon.

Product features

Fluid Precision since 1991

Apera Instruments PH20 Value pH Tester Kit simply provides reliable and quick pH measurements for general water solutions' pH testing, such as hydroponics, horticulture, pools and spas, beverage making, education, aquarium and aquaculture, water treatment, environmental monitoring, etc.

Intelligent Functions

• 1-3 point automatic calibration with ATC
• Auto recognition and reminder (a smiley face) of stable readings takes the guesswork out of getting a stable measurement.
• Low battery alarm; Auto. power off if no operation for 8 minutes
• Supports switch of pH standard series (USA or NIST) and temperature unit (˚F or ˚C)

Sensor Shield

The latest PH20 probe all come with the sensor shield that protects the sensitive glass membrane from accidental damage.

High-sensitivity pH Probe

Apera's proprietary lithium glass pH sensor lays the foundation for quick and reliable pH measurements.

Large Clear LCD Display

Simultaneous temperature display along with stable reading indicator and completed calibration icons.

Powered by AAA batteries

Up to 2000 hours of operation. Installation: All 4 pieces of batteries' positive sides (+) must face up.

Product description

Keyestudio TDS sensor kit is compatible with Arduino controllers, plug and play, easy to use, Analog TDS Sensor for Domestic Water and Hydroponics Water Quality Monitoring



Technical Parameters

TDS Meter sensor:

Input Voltage: DC 3.3 ~ 5.5V

Output Voltage: 0 ~ 2.3V

Working Current: 3 ~ 6mA

TDS Measurement Range: 0 ~ 1000ppm

TDS Measurement Accuracy: ± 10% F.S. (25 ℃)

Module Interface: XH2.54-3P

Electrode Interface: XH2.54-2P



Waterproof TDS Probe:

Number of Needle: 2

Total Length: 60cm

Connection Interface: XH2.54-2P

Color: White



Shipping List:

TDS Meter V1.0 sensor for Arduino x1

Waterproof TDS Probe x1

XH2.54-3Pin Jumper Wire x1

• This TDS probe sensor for arduino is used to measure TDS value of the water. The TDS value can be used as one of the basis for reflecting the cleanliness of water.
• TDS (Total Dissolved Solids): indicates how many milligrams of soluble solids dissolved in one liter of water. The higher the TDS value, the more soluble solids dissolved in water, and the less clean the water is.
• This TDS Meter Probe is plug and play and easy to use. Also, the wide supply voltage of 3.3~5.5V and the analog signal output of 0~2.3V. Comes with XH2.54-2P/3P connector wires.
• Its Electrode can measure conductive materials, such as suspended solids, heavy metals and conductive ions in water. Also, it can be used for water quality testing in the field of domestic water and hydroponics.
• With this sensor, you can easily DIY a TDS detector, and easily check the cleanliness of the water to make your water quality better. How to use: Search for "keyestudio wiki KS0429" in Google Chrome to get the wiki online tutorial for this product.

User questions & answers

Question:	Does this come with any calibration solutions or what is recommended for calibration
Answer:	They provide you with two keys that work for both locks. The only issue I have is that the locks can be temperamental when trying to unlock.
Question:	Can i use this sensor an esp32 board? the example code is for arduino uno
Answer:	There is usually a nut and / or a retaining clip on the inside holding it in place. The nut is threaded but the retaining clip should just pop off with a screw driver I believe.
Question:	Can this be left submerged permanently
Answer:	You lock or unlock it with key, doesn't self lock
Question:	Will this work on salt (ocean) water (not continuously submerged
Answer:	i have a contact toolbox and the locks worked . have not tried on a husky box.

• Kindly NOTE: This soil tester can not be applied to test pH value of any other liquid. If the soil is too dry the indicator will not move, and water it before testing.
• 3-IN-1 FUNCTION: Test soil moisture, pH value and sunlight level of plant with our soil meter, helps you specialize in grasping when you need to water your plant.
• ACCURATE & RELIABLE: Double-needle Detection Technology strongly enhances the speed and accuracy of detecting and analyzing soil moisture and pH acidity.
• EASY TO USE: No batteries needed, just insert the sensor probe into the soil about 2-4 inches, toggle switch to test moisture, pH, sunlight you would like to measure.
• INDOOR & OUTDOOR USE: Design to be lightweight and portable, easy to carry around for outdoor use, ideal soil test tool kit for home plants, garden, lawn and farm.

User questions & answers

Question:	Does the light meter measure light over the course of an entire day? Or is it more an instant light measure
Answer:	No, just the smallest one.
Question:	Will this work in coco
Answer:	Only the small level is magnetic.
Question:	Do I have to wait 10 minutes between readings if I’m just measuring soil moisture
Answer:	One Horizontal (level) and Two Vertical (plumb) Vials
Question:	Can the metal rods be taken off and used as a bolt in a crossbow
Answer:	Yes , and it actually fits 4 levels, the fourth is the 3’ which is not a part of this package

Product features

Let Sonkir MS02 Soil pH Tester Make You Become a Good Plant Carer !

3-IN-1 Design

This 3-in-1 soil moisture meter is designed to better know the condition of your plant, detect soil moisture, help you know the pH value of the soil, determine if plants get enough sunlight to keep plants grow healthier !

Scientific Data Monitoring

Help you control every detail and track all changes about your plants. Keep your plants in a healthy condition through scientific data monitoring !

Special Reminder:

1. The pH function of this soil tester can not be applied to test pH value of any other liquid.

2. Since soil most often is in/close to neutral state (with pH value of 7), it is highly likely that you find the needle in display window stay still (because the default pH value is set at somewhere between 7 and 8) when you use it to test the pH value of soil. Customers sometimes are misled by this appearance and hence regard the tester as a defective unit by mistake.

How to Use:

Step 1: Switch to moisture/pH/light position according to demand.

Step 2: Insert the probe into the soil about 2-4 inches.

Step 3: Check moisture/pH/light level in the dial after 10 minutes.

Step 4: Remove probe from soil and wipe clean after each use.

Kindly Note:

1. Do not force it into very hard soil or touch hard objects since it will be easy to damage the probe.

2. Do not use it to test pure water or other liquids. It can only be used to measure soil.

3. Do not leave the meter in the soil for a long time.

4. Please wipe and clean the probe after each use.

5. If the soil is too dry the indicator will not move, and water it before testing.

Test Soil Moisture

Help you specialize in grasping when you need to water your plant.

Test the pH of the Soil

Help you to control the pH value in the soil.

Test Sunshine Level

Know about whether it gets adequate sunlight.

Outdoor Plants

Indoor Plants

Vegetable Garden

Product description

Specification:

Module Power : 5.00V

Module Size : 43 * 32mm

Measuring Range :0 - 14PH

Measuring Temperature: 0 - 60 °C

Accuracy : ± 0.1pH (25 °C)

Response Time : ≤ 1min

pH Sensor with BNC Connector

pH2.0 Interface ( 3 foot patch )

Gain Adjustment Potentiometer

Power Indicator LED

Package List:

1 * PH Sensor Module

1 * PH Probe

• The electrode is composed of a PH glass electrode and a silver chloride silver reference electrode, and is a measuring component of the PH meter for measuring the pH value of the aqueous solution.
• The electrode plug should be kept clean and dry.
• The external reference solution of the electrode is 3NKCL solution.
• Avoid cross-contamination between solutions during measurement to avoid affecting measurement accuracy.
• The electrode should avoid long-term immersion in acidic fluoride solution.

Product description

Apera Instruments PH60 Pocket pH Tester is designed for reliable and easy pH measurement for general water solutions, such as in hydroponics, horticulture, aquaculture, pools& spas, water treatment, cooling towers, environmental monitoring, beverage making, education, etc. The meter comes with a replaceable pH probe (PH60-E) for general water solutions pH test. The meter is also compatible with 3 other types of pH electrodes and an ORP probe (sold separately) for different applications such as solid samples and surface tests. NOTE: Add a few drops of 3M KCL liquid (included in the kit) to their test sample (usually low ion-strength liquid like distilled water or RO water), which will significantly help accelerate the stabilization without affecting the pH reading.

• NOTE: A few drops of water are added to the electrode cap before the product leaves the factory. This is to maintain the sensitivity of the electrode. Therefore, when you use it for the first time, it is normal to find water droplets in the electrode cap
• Accuracy: 0.01 pH; range: -2.00 to 16.00 pH, 32 to 122˚F (0 to 50˚C); Auto. Power-Off: 8 minutes without operation
• Easy 1-3 points auto. calibration, recognizes 5 types of solutions (1.68, 4.00, 7.00, 10.01, 12.46); Auto Temp. Compensation (ATC) ensures accuracy in various temperatures (32-122˚F)
• High quality replaceable glass pH probe, suitable for regular water solutions e.g. pools&spas, hydroponics, environmental monitoring, cooling towers, beverage, etc.
• Large LCD with 3 backlit colors (indicating different modes), dual display of temp./pH, and reminders of completed calibrations and stable readings
• The smiley icon indicates stable readings so you won't have to guess when is the right time to record the measurements
• COMPLETE KIT with READY-TO-USE calibration solutions, calibration bottles, storage solutions, AAA batteries, and a lanyard all in a rugged portable case

User questions & answers

Question:	Since, in the video, it shows a 10.0 calibration ability but is not included.....Where can the 10.0 solution be purchased at....any links
Answer:	It is true the travel kit comes with gift bottles of the 4 and 7 solutions but not the 10. You can purchase our 10.01 buffer solution here: https://aperainst.com/ph-1001-standard-calibration-buffer-solution-001-ph-accuracy-at-25c-77f Thank you for your interest!
Question:	Would this work for chemistry experiments (done as part of a homeschool chemistry course
Answer:	Yes, but advanced warning, we recommend keeping the ph measure above ph of 2 and below a ph of 12 as ph measures beyond those points will shorten the life of the sensor and is considered improper use and voids the warranty. It may be wise to check in advance if the chemistry course will have the student delving into substances more acidic than lemon juice like HCL, or more alkaline than hand soap. Be sure to have distilled water to rinse all substances away from the probe when testing.
Question:	Does this check PPM
Answer:	No, that would be our EC60 and PC60 that will do PPM under the measurement for Total Dissolved Solids (TDS). PH60 does only PH and mV for an ORP probe sold separately.
Question:	For egular maintanance, does the device /probe must be kept inside a solution or can it be kept inside its case dry
Answer:	It needs to be kept in the solution. The cap that comes with this is not the best solution to keep it wet either.

Product features

Premium Series PH60 Pocket pH Tester Kit

Apera Premium Series PH60 Pocket pH Tester Kit is designed for professional pH measurements in general water applications e.g. hydroponics, horticulture, pools and spas, aquarium, aquaculture, beverage making, water treatment, environmental monitoring, education, etc.

Default Probe – High-Sensitivity pH Probe with Sensor Shield

• pH probe is the fundamental component that determines the measuring performance of a pH meter. Apera's proprietary sensitive lithium glass membrane of ensures accurate and stable measurements with a fast response. A temperature sensor is built in for automatic temperature compensation (32 to 122˚F) to increase reliability in samples of different temperatures.
• A sensor shield is built on top of the probe to protect the sensitive glass membrane from accidental damages.
• This probe is made for general water applications such as hydroponics, horticulture, aquaculture, aquarium, pool and spas, water treatment, beverage making, environmental monitoring, and education.

Compatible Probe – PH60S-E Swiss Spear pH Probe (sold separately)

• This probe is built with Swiss sensor technology and materials, featuring an impact-resistant spear glass membrane with a long-life reference system and a built-in temperature sensor. It is designed for direct test of cheese, meat, fruit, vegetables, dough, sushi-rice, solid growth medium, and other solid/semi-solid samples. It also works well for general water solutions.
• This probe is compatible with PH60 Tester. It is not included in the PH60 Tester Kit, and is sold separately.

Compatible Probe – PH60F-E Flat pH Probe (sold separately)

• This probe features a flat glass membrane with a built-in temperature sensor and 3 ceramic junctions for thorough contact with test surface, which is designed for flat surface pH testing such as skin, fabrics, textiles, paper, leather, and small-volume solution samples (ideal for saliva pH test). It also works well for general water solutions.
• This probe is compatible with PH60 Tester. It is not included in the PH60 Tester Kit, and is sold separately.

Compatible Probe – ORP60-E ORP Probe (sold separately)

• This probe features a platinum ORP sensor with a built-in temperature sensor. Designed for general water solution's ORP measurement (Oxidation-Reduction Potential). Press Mode button to switch to mV mode before measuring ORP.
• This probe is compatible with PH60 Tester. It is not included in the PH60 Tester Kit, and is sold separately.

Large 3-color backlit screen

• Blue: measurement mode
• Green: calibration mode
• Red: alarm for out-of-range readings

Easy-to-install replaceable probe

Typically the service life of a pH probe is 1-2 years under proper use and maintenance. The replaceable probe helps you save money in the long run.

Up to 2000 hours of operation powered by AAA batteries

Installation: All 4 pieces of AAA batteries' positive sides (+) Must Face Up.

Rugged design

IP67 water-resistant rating, ideal for operation in harsh environments and conditions

Product description

For use in the Ultrameter II. Replacement pH/ORP sensor.

Product description

Description:

This sensor is low in price, easy to use, high in measurement accuracy, and can directly output 0~5V or 0~3V analog voltage signals.The pH of the solution (pH) is an important property of the solution. Industrial grade PH transmitters are expensive; the PH test pens on the market are mature products that cannot be used for secondary design development; P composite electrodes output mV-level voltage signals, and the microcontroller cannot directly identify and process them. Based on these conditions, we have designed this. PH sensor module. 

 

Parameter:

1>.Working voltage: 5V

2>.Measuring range: 0-14PH

3>.Measuring temperature: 0-60?

4>.Accuracy: ±0.01PH (25?)

5>.Response time: less than 1minute

6>.PH sensor interface: BNC interface

7>.Temperature sensor interface: XH2.54-3P

 

Pin definition:

1>.VCC:Supply voltage positive, 5V

2>.GND:Supply voltage negative

3>.GND:Analog signal output negative

4>.PO:Analog signal output positive.Output range is 0V-5V.

5>.2V5:Reference voltage 2.5V output

6>.T1:Temperature sensor DS18B20 signal output port

• This sensor is low in price, easy to use, high in measurement accuracy, and can directly output 0~5V or 0~3V analog voltage signals.
• The pH of the solution (pH) is an important property of the solution.
• Industrial grade PH transmitters are expensive; the PH test pens on the market are mature products that cannot be used for secondary design development; P composite electrodes output mV-level voltage signals, and the microcontroller cannot directly identify and process them. Based on these conditions, we have designed this. PH sensor module.
• Measuring range: 0-14PH. Measuring temperature: 0-60?
• SHOP WITH CONFIDENCE: To Provide You With the Highest Quality Service, If You Have Any Question, Please Feel Free to Contact Us.We Will Provide After-sales Service Until You Are Satisfied.

User questions & answers

Question:	Does the ph sensor need to be rinsed frequently? What are the risks of the sensor being clogged
Answer:	Some locks are reversible (C3F line). They are not ADA, require two actions to open. C5F line is ADA compliant, one-touch opening, but you need to buy left or right for your application
Question:	what is the Pin Out of the white temperature sensor connector
Answer:	Yes, please, check C7FS, the rosette is 3 5/8" https://www.amazon.com/Indicator-Privacy-Lock-Commercial-Chrome/dp/B07Q1DMN5N/ref=sr_1_2?keywords=vizilok&qid=1577120601&sr=8-2&th=1
Question:	Is the white connector labeled u2 for an external rtd etc
Answer:	Contact the manufacturer direct from their web site.

Product description

Features: Heating voltage: 5 ± 0.2V (AC · DC) Working current: 5-10mA Detectable concentration range: PH0-14 Detection Temperature range: 0-80 ° Response time: ≤5S Settling Time: ≤60S Component Power: ≤0.5W Working temperature: -10 ~ 50 ° (nominal temperature 20 °) Humidity: 95% RH (nominal humidity 65% RH) Module Size: 42mm × 32mm × 20mm Output: analog voltage signal output With 4pcs M3 Mounting Holes Package included: 1pcs Liquid PH0-14 Value Detect Test Sensor Module 1pcs PH Electrode Probe Hydroponic Sensor BNC Interface aeProduct.getSubject()

• Reland Sung

Product description

PoolWarden pH Sensor - Industrial Pool and Spa Water Chemical Controller Probe



The PoolWarden pH Sensor makes sure the sanitation in your spa water or industrial pool is functioning properly by maintaining the proper pH level. It uses standard 1/2-inch NPT (national pipe tapered) to ensure that the probe has a tight seal and will not cause leaks. This pH Sensor features blue color-coded electrode cap makes it easier to identify from the ORP.



PoolWarden designed the pH Sensor with double junction construction to withstand constant use. Plus, it has a bulb guard that can be removed for easy cleaning. NOTE: pH sensors should not be exposed to freezing conditions. The sensor may incur damage if the outside temperature is below freezing.

• MAINTAINS PROPER pH LEVEL - Maintaining the proper pH level in your swimming pool or spa water is critical to chlorine sanitation. The PoolWarden pH Sensor ensures the sanitation is functioning well and reduces bathers' discomfort due to too low or too high pH level.
• WITHSTANDS CONSTANT USE - This pH Sensor is made with durable construction and features double a junction to ensure that its sensor life lasts longer than other brands. The blue color-coded electrode cap makes it easier to identify from the ORP.
• PROVIDES CONVENIENT IN-LINE MOUNTING CONFIGURATION - PoolWarden uses standard 1/2-inch NPT (national pipe tapered) thread to ensure that the sensor has a closer seal than straight threads and allows greater in-line mounting.
• INSTANTLY READY FOR USE - This reliable industrial pH Sensor has a bulb guard that can be removed for easy cleaning or for use without it. Note: pH sensors should not be exposed to freezing conditions. The sensor may incur damage if the outside temperature is below freezing. It should be removed to protect them.
• COMPATIBILITY - Replaces the pH sensor for Acu-Trol AK600, AK110, AK2100, and ControlOMatic PoolWarden.

User questions & answers

Question:	Do these come with the leads
Answer:	Just cut around the circle as marked in the back. You'll be able to see the place where the two plastic zip ties meet. You can cut through these with a sharp blade. Once that's cut you'll be able to remove the Master Lock from the plastic packaging. Good luck!
Question:	tiene conector BNC
Answer:	You can mount it on a door if you can do so securely. I would not recommend mounting it on a hollow core door. A metal door maybe. It would be best to mount it on the door facing. It works out well there for me.
Question:	How long do these probes usually last
Answer:	The exterior dimension is 4-3/4 in. (12 cm) H x 3-1/4 in. (8.3 cm) W x 1-1/2 in. (3.8 cm) D
Question:	what's the proper method of storing these items through the winter
Answer:	It looks like it is built into the lock and wouldn't be easily able to change or order separately.

Product description

The Sensorex direct fit replacements for Acu-trol pH and ORP sensors feature more gel capacity and are constructed in superior PPS for better chemical compatability. The S465C for pH, S465C-ORP for ORP Platinum and S465C-ORP-Au for ORP Gold. The electrodes are designed for long service life in pool and aquatic installations at a very reasonable cost.

User questions & answers

Question:	Any idea if this kit would work for Raspberry Pi
Answer:	You are welcome to read manual from following linkage: http://www.baaqii.net/promanage/BU0203%2BBU0481.pdf And you may download following files to use it: www.baaqii.net/promanage/BU0203.zip Besides, please note that after the PH sensor is purchased, you may need pH buffer solutions (sorry but we have no sales for buffer) to calibrate this sensor. For instance, record the value at pH 4 and pH 7 -- then calculate the slope of a line through both points (y=mx+b). That equation is then applied to readings in your code.
Question:	What is the tempurature range that this sensor can be used in
Answer:	This is a liquid immersion sensor. It cant directly measure soil pH.
Question:	If I want to test the pH of a solution, what's the smallest volume (in ml) that I need
Answer:	I cant speak for all pH sensors but most that use the permeable bulb will clog if left in something like plant or aquarium water.
Question:	Can the probe stay in the water indefinitely
Answer:	No. You select the 1 to 12 symbols (0 thru 9, *, #) that will be in the combination but pressing those correct symbols in ANY order will open the lock.

Product features

• Litmus Test Function: Digital pH meter The color of the backlight automatically changes with the PH value, just like litmus test Strips.
• High Accuracy: PH tester Has a Sensitive Electrode Sensor to Read Accurate Ph Levels. The measuring range of pH is -2.00-16.00 pH with an accuracy of ±0.01.
• Auto Calibration: The digital pH pen has an (ATC) auto temperature compensation feature that adjusts to water temp and water quality to give pH readings almost instantly. As well, You can calibrate the tester with the One-Touch button using buffer powder.
• Automatic Temperature Compensation: No more need to take care about the temperature of testing liquid, as ph meter has built-in (ATC) automatic temperature compensation, so that it can accurately determine pH value of the sample at any temperature in a range of 0°C - 80°C (32°F - 176°F)
• Widely Application: Pocket size pH water tester is the ideal test kit for home and laboratory uses. Ideal use to test for drinking water, swimming pools, aquarium, spas, hydroponics, fishing industry, and more.

Product features

RCYAGO New Digital PH Meter, PH Test Pen Litmus Tester 0.01 PH High Accuracy Water Quality Tester

The PH-2 Pro Meter pH is a newly developed pH meter that is similar to litmus paper with a color-changing backlight display. It is easy to use. When immersed in the solution to be measured, the reading can be quickly displayed on the LCD display and automatically calibrated. Just press Calibration can be completed at the touch of a button. No need to use color card and test strip to distinguish pH value, fast and accurate. Mini portable. This pH meter is affordable and useful for those who need a PH tester for household and laboratory use. Widely used, it is an ideal instrument for any aquarium, fishery, swimming pool, spa, school laboratory, food and beverage, drinking water, etc.

Features: