13 best cps refrigerant leak detectors

• HIGH TECH: CPS Products proudly introduces a new generation of leak detectors featuring a revolutionary new E_MOS detection technology. Laboratory and field tests have confirmed Leak-Seekers made using this new technology are more sensitive, stable and accurate then any other detection method on the market including heated diode, infrared, corona, ultrasonic, halide torches and soap bubbles
• FEATURES: This Refrigerant Leak detector boasts a 500 hour nominal sensor life, more than 50 hours battery life (3 C batteries), and the sensor will not be contaminated by R404a
• CONSISTENCY: The sensitivity of the leak detector remains constant for it's lifetime
• MULTI USE: CPS LS1 Leak-Seeker meets all US and International standards for both automotive and commercial use
• SPECS: Superior sensitivity to R410A and new HFO refrigerants, sensitivity to 35 parts per million (less than . 1oz per year), and senses all refrigerants including those with hydrocarbon components

User questions & answers

Question:	El origen del producto. Detector de fugas cps
Answer:	The LS1, leak detector, is designed and assembled in the USA. El LS1, detector de fugas, está diseñado y ensamblado en los EE. UU.
Question:	Is for r 22 refrigetant
Answer:	MULTI USE: CPS LS1 Leak Seeker meets all US and International standards for both automotive and commercial use SPECS: Superior sensitivity to R410A and new HFO refrigerants, sensitivity to 35 parts per million (less than .1oz per year), and senses --->***ALL***
Question:	viene con su cage
Answer:	Yes, it comes with the case
Question:	this product have a case?. this is the correct picture, Im confuse if this product use batteries or power cable, can be more specifi, please
Answer:	Mine came with a case, batteries, instructions, and little ziplock bag of expendable components.

Product features

Innovative Solutions in Product Design

CPS Products is a business built by technicians, for technicians. We design Tools for the Professional Service Technician. With the world’s most comprehensive range of Leak Detection technologies, Smart Diagnostic tools, and proven Maintenance Solutions, CPS Products has been The Workingman’s Choice since 1989.

LS2 Leak Seeker

• Simple, intuitive bar graph LED display5
• 6 levels of sensitivity automatically selected by proprietary Powershift software
• he only leak detector with fully automatic sensitivity selection and control. Simply turn it on and pinpoint the leak
• Designed and manufactured in U.S.A. with U.S. and globally sourced components.

LS790B Leak-Seeker

• Combines the most advanced microcomputer circuitry with field proven Ion-pump sensor technology creating a highly sensitive, accurate electronic refrigerant leak detector
• Over 128 computer generated tones and a high intensity bar graph display quickly alerts the user to varying halogen concentrations
• 10 sensitivity ranges enables the LS790B to detect leaks of all refrigerants

LS1 Leak-Seeker

• Detects refrigerants including those with hydrocarbon components (CFC, HCFC, HFC, HFO, NH3, HC. Hydrogen trace gas in 95% N2, 5% H2 mixture)
• Microprocessor controlled sensor improves sensitivity and reduces false alarms
• Optimal leak-finding performance under a broad range of conditions
• Software managed sensor rejuvenation at startup ensures highest sensitivity
• Simple, intuitive bar graph LED display

• WHAT IS IT: The Leak-Seeker combines the most advanced microcomputer circuitry with field proven Ion-pump sensor technology creating a highly sensitive, accurate electronic refrigerant leak detector
• CALIBRATION: Individually calibrated to detect a leak rate of better than 0.25 oz/yr (7g/yr) of HFC
• PATENTED TECHNOLOGY: Our Leak Detector features patented Ion-Pump sensor technology, proven effective in detecting all refrigerant types. Patented automatic calibration design eliminates the need for manual balance or tick rate adjustments while the user selectable 10 sensitivity ranges enables the LS790B to detect all non-combustible CFC, HCFC, HFC gases and blends
• PATENTED TECHNOLOGY CONTINUED: The patented water vapor filter provides greater stability under high humidity conditions and our patented automatic calibration circuit ensures optimal performance at all times
• SUPERIOR DISPLAY: Over 100 computer generated tones and a high intensity bar graph display quickly alerts the user to varying halogen concentrations

User questions & answers

Question:	Will this work as good as a Joe Biden Sniffer
Answer:	Never used a Joe Biden, this was works okay for medium leaks, sometimes it picks up other things making it hard to find a small leak.
Question:	How do you clean the sensor
Answer:	Go to their web sight. It gives detailed instructions.
Question:	does it detect 404a
Answer:	LS790B to detect all non-combustible CFC, HCFC, HFC, SF6 gases and blends. 404a is hp62, so if you go by item description from cps website the answer is no
Question:	cant get the alarm to stop sounding any ideas hit the reset changed the batteries still ng
Answer:	Check to see if there is water in the tip. If there is a lot of moisture or water in the actual sensor the alarm will go off non stop.

Product features

Innovative Solutions in Product Design

CPS Products is a business built by technicians, for technicians. We design Tools for the Professional Service Technician. With the world’s most comprehensive range of Leak Detection technologies, Smart Diagnostic tools, and proven Maintenance Solutions, CPS Products has been The Workingman’s Choice since 1989.

LS2 Leak Seeker

• Simple, intuitive bar graph LED display5
• 6 levels of sensitivity automatically selected by proprietary Powershift software
• he only leak detector with fully automatic sensitivity selection and control. Simply turn it on and pinpoint the leak
• Designed and manufactured in U.S.A. with U.S. and globally sourced components.

LS790B Leak-Seeker

• Combines the most advanced microcomputer circuitry with field proven Ion-pump sensor technology creating a highly sensitive, accurate electronic refrigerant leak detector
• Over 128 computer generated tones and a high intensity bar graph display quickly alerts the user to varying halogen concentrations
• 10 sensitivity ranges enables the LS790B to detect leaks of all refrigerants

LS1 Leak-Seeker

• Detects refrigerants including those with hydrocarbon components (CFC, HCFC, HFC, HFO, NH3, HC. Hydrogen trace gas in 95% N2, 5% H2 mixture)
• Microprocessor controlled sensor improves sensitivity and reduces false alarms
• Optimal leak-finding performance under a broad range of conditions
• Software managed sensor rejuvenation at startup ensures highest sensitivity
• Simple, intuitive bar graph LED display

Product description

CPS LS2 Leak Seeker 2 Refrigerant Leak Detector Leak Seeker 2 Refrigerant Leak Detector x Simple, intuitive bar graph LED display 56 levels of sensitivity automatically selected 2 user selectable alarm ranges The world's only leak detector with fully automatic sensitivity selection and control Leak-Seeker II is the world's only fully automatic electronic leak detector with E_MOS sensor technology. Sophisticated software algorithms control the operation of this instrument allowing the user to quickly find the location of both small and large leaks with pin-point accuracy. Efficient control of the power to the sensor increases the life of the batteries while ensuring that the sensor is operated within its optimum parameters. A wide range audible alarm and 56 levels of sensitivity, automatically selected by the POWERSHIFT software and displayed in a bar graph type visual indicator, lets the user concentrate on finding the leaks and not on the instrument. Housed in an ergonomically shaped high impact plastic chassis with a flexible 15 probe, the Leak-Seeker II is built for rugged field use. The E_MOS sensor is enclosed in a metal cage designed to protect the sensor from dirt and water. The sensor housing incorporates an easily removable threaded cap with a filter, allowing the user to easily clean any dirt or grease which may collect while searching for leaks. Leak Seeker 2 Parts Description Item LS1 Leak-Seeker I LS2 Leak-Seeker II Sensitivity Better than 0. 1 oz. (3g) / year Sensitivity Selection Manual Fully automatic Operating Temperature 0 to 140F (-18 to 60C) Auto-Off Yes, after 10 minutes of inactivity Power (Battery Life) 3 C batteries (>50 hr. continuous use) Low Battery Indication Gre

• LEAK-SEEKER II Refrigerant Leak Detector
• Microprocessor controlled sensor improves sensitivity and reduces false alarms
• Detects refrigerants including those with hydrocarbon components (CFC, CH2F2, HCFC, HFC, HFO, NH3, HC. Hydrogen trace gas in 95% N2, 5% H2 mixture A2L refrigerants)
• Visual tachometer-like bar graph display with 8 high intensity LEDs
• Optimal leak-finding performance under a broad range of conditions

Product description

CPS Tech-Set LS780C Refrigerant Leak DetectorFeatures field-proven Ion-Pump sensor technology Highly sensitive and accurate electronic refrigerant leak detector 128 computer generated tones and display alerts the user to varying halogen concentrations Designed and manufactured in the USA with U.S. and globally sourced componentsA rugged, three position slide switch is used to turn the instrument on & select either LO or HI sensitivity ranges. Visual indication of the leak size is provided by a high intensity LED varying in brightness with the concentration of the refrigerant. Item Tech-Set LS780C Leak-Seeker LS790B Detector Type Proprietary Ion-Pump sensor with built-in selective filter housing Sensitivity Better than 0.25 oz (7g) / year leak rate of HFC Sensitivity Selection Manual Refrigerant Sensitivity All, including those with hydrocarbon components (CFC, HCFC, HFC, HFO, NH3, HC) Visual Alarm High intensity LED (Varies in brightness) High intensity bar graph display Flex Probe 18 long metal flex probe Operating Temperature 0 to 140F (-18 to 60C) Controls OFF, LO & HI sensitivity modes 6 button keypad Power (Battery Life) AA alkaline batteries (>40 hr continuous use) Weight 18 oz (500g) Audible Alarms 128 computer generated tones to precisely guide user to the source of the leak Lock-Out Mode N/A Yes Low Battery Indication Center LED above * lights during operation Auto-Off No Yes, after 15 minutes of inactivity Sensor Life Replace seasonally Warranty 1 year 2 years

• LEAK-SEEKER Refrigerant Leak Detector
• Highly sensitive and accurate electronic refrigerant leak detector
• Features field-proven Ion-Pump sensor technology
• 128 computer generated tones and display alerts the user to varying halogen concentrations
• Designed and manufactured in the USA with U.S. and globally sourced components

Product description

Refrigerant Leak Detector, with Flexible Probe, 3 Position Switch, LED Display, Audible Alarm

• Package Weight : 0.521 pounds
• The package length is 5.842 centimeters
• The package height is 24.384 centimeters
• The package width is 9.144 centimeters

Product description

Features and BenefitsWorks with all refrigerantsCertified SAEJ2791 for R134a and SAEJ2913 for HFO1234yfE-MOS sensor designed to work 500 plus hours with no loss ofsensitivityTrue UV light will work with all dyesFull 2 year warranty including sensor tipCPS Products proudly introduces the industries first fullyautomatic, extended life leak detector utilizing NEW E-MOS(Enhanced Metal Oxide sensor) technology. NEW E-MOS usesproprietary pulse modulation techniques to increase both batteryand sensor life. Software managed sensor rejuvenation mode,initiated at each startup ensures the highest level of sensitivityevery use, for up to 500 hours of detecting leaks of less than .1oz per year. Sensitivity remains constant over the life of thesensor. Senses all refrigerants including those with hydrocarboncomponents. Meets all International standards for automotive useand is ETL certified for the NEW SAEJ 2791 for R-134a and SAEJ 2913for HFO 1234yf. Also works on all HFC, HCFC, CFC and SF6Refrigerants* 50 hour battery life (3 C batteries). 500 + hourssensor life 2 year warranty. Full 2 year warranty including thesensor. Proudly made in the USA.Professional compact UV Leak Detector Kit is designed to locateleaks sources with UV light technology. Compact light delivers bigresults of the larger lights at a fraction of the cost andsize.UV leak detector alone, mounted to an electronic leak detector withthe supplied clip helps perform Electronic and UV Leak Detection atthe same time. The ultra bright UV light next to the censor tipallowing easy access into tight areas that the larger lights cannotgo. Incorporating the UV technology along with electronic detectioninsures that even the toughest leaks can be found. Compatible withall UV leak detection dyes.

• Free shipping, often faster than Prime (i.e Next Day!)
• Refrigerant leak detector with UV light
• Air Conditioning Tools
• leak detection electric
• Professional

Product description

The use of a vaccum gauge is essential to insure that a repaired or newly installed system is clear of contaminants. Improper evacuation can lead to costly recalls and repairs. The digital vaccum gauge measures what takes place beyond 29" of vaccum.

• ACCURATE - Calibrated to strict NIST standards for best-in-class accuracy and reliability.
• SMART DESIGN - Advanced sensor design with self-heated thermistor bridge and automatic temperature compensation.
• SIMPLE TO CLEAN - Field cleanable sensor designed to withstand 400 Psi of positive pressure.
• EASY TO READ - Continual digital readout of evacuation process on large, easy to read 5-digit LCD display.
• USER SELECTABLE UNITS - Choose between microns, torr, in/hg or mBar.

User questions & answers

Question:	Is the clear plastic display cover suppose to be removed? Mine came off but was not sure if that was part of packaging or actual display
Answer:	Good evening. There is a protective peel-able plastic film that the manufactuer puts over the plastic display cover. Is this what you experienced?Steven @ Chadwell Supply
Question:	Does it have the standard hvac 1/4" flare fitting on the end
Answer:	The fitting on the gauge mates to a Schrader valve stem. This fitting could be called as a standard 1/4 " flare with insert for Schrader release. In fact the three way tee adapter that comes with the gauge allows for several connections combinations.
Question:	Why cps device show half number compare to other micron device? example: cps reading 280, other 3 devices read 560 micron
Answer:	They both are in microns, thats the unit of measurement. I think you are looking a display fro advertising. When in operation it will read how many microns of moisture are present.
Question:	Bad? Powers up fine but I never get a reading even when my dial gauge says I'm at 29+ inches of Hg - it just displays the cursor moving left to right
Answer:	Check your pump , sounds like you have a leak or maybe pump is not pulling down into microns . This gauge will not show inches of vacuum , doesn't show until vacuum is at least 20,000 microns . I just bought one of these and it works better than three others that I have .good luck

• With the latest and most innovative infrared sensor, its sensor life extends enormously for a maximum of 10 years. It triggers on all halogenated refrigerants much more precisely than traditional corona sensors and moderate heat-diode sensors.
• 3 Selectable Sensitivity Levels -High/Medium/Low; With a maximum sensitivity up to 0.14oz/yr.
• The world's first TFT screen advanced leak detector animates leakage, sensitivity, battery levels and sensor faulty indicators and presents more clear and easy readings.
• Pressing PEAK button to mark the maximum leakage value during measurements.
• Responds to all kinds of halogenated refrigerants and meets EN14624, SAE-162, SAE-2791 and SAE-2913 standards.【Free return or exchange within 3 months!】 24/7 US Technician Support via Email and Phone.

User questions & answers

Question:	Only the sensor is covered for 10yrs. not the Built-In Battery . . . right
Answer:	It's a rechargeable battery, if you use it carefully it could also cover for 10 years.
Question:	Will it detect hydrogen gas
Answer:	No.
Question:	Does it detects r-22 and r-410a? what are the list of which can it detects
Answer:	Yes, It can list R-22 and R-410A, and it works on all halogen refrigerants.
Question:	Que tipos de gas detecta ej:134a 22. etc
Answer:	Sí, puede detectar R22, R134A.

Product features

ILD-200 Portable Infrared Refrigerant Leak Detector

ILD-200 Advanced Refrigerant Leak Detector is designed exclusively to make the HVACR Technician's job easier, faster, safer and more efficient. We set out to develop the best refrigerant leak detector for HVACR. The Six-hour battery life lets you work all day before recharging. The sound and light alarm allows you to work the way you want to work. This infrared leak detector allows it to detect even the most difficult ones like R-134a, R-404A, R-407C, R-410A and 1234yf refrigerants. Our exclusive solid electrolyte sensor technology reduces heat and gives the sensor a longer life than traditional heated diode or corona detectors.

TFT Screen

The first TFT / LCD infrared leak detector:

• Easy and clear readings
• Animated sensitivity indication
• Animated screen alarm indication
• Real-time battery allowance display

Sensitivity Adjustable

When the detection result is not stable, lower the sensitivity level to adapt to the environment.

• 3 Selectable Sensitivity Levels -High/Medium/Low
• Maximum sensitivity up to 0.14oz/yr
• Suitable for all detection scenario
• Smaller leak, higher sensitivity grade

Peak Function

The first TFT / LCD infrared leak detector:

Pressing PEAK button to mark the maximum leakage value that is achieved during leakage detection

Get faster to find the largest leakage point in the complex working environment

Mute&Earphone Function

With earphone port, suitable for detecting even in a noisy environment

Flexible Probe

Flexible Probe Allows detection in difficult and hard-to-reach areas

Replaceable filters to keep clean of the sensor

Advanced Sensor

Compared to traditional corona sensor, ILD-200 adopts the most advanced sensor:

• 10 Years' sensor life
• Strong anti-interference
• Wide range and sensitive reaction
• Detects all halogenated refrigerants
• Meets EN14624,SAE-162,SAE-2791 and SAE-2913 standards.

More Refrigerants

Respond to all halogenated (contains Chlorine of Fluorine) refrigerants.

• CFCs e.g.R12, R11,R500,R503 etc.
• HCFCs e.g. R22,R123, R124,R502 etc.
• HFCs e.g. R134a, R404s, R125 etc.

AUTO RESET

Automatic Self Calibration within 3s

• Reset to max sensitivity in clean air
• Reset to current sensitivity in refrigerants environment to detect higher concentration leakages

Product description

The Robinair LD7 Premium Refrigerant Leak Detector features a new color graphic display that highlights leak sizes in two unique ways. Bar graph mode shows the amount of refrigerant detected in the air and changes colors as the sensor gets closer to the leak. Sweep mode allows the user to see the level of refrigerant detected in the air through a line graph that helps the user trace back and forth to pinpoint the exact source of the leak. The LD7 also uses an audible alarm to alert technicians of a refrigerant leak, UV LED lights to locate leaks using UV dye and an inspection light for searching in dark locations. The LD7 is compatible with most commonly used refrigerants today, including R-134a and 1234yf, and is equipped with a stable, long life sensor that will last up to 10 years. The LD7 meets all of the current industry leak detector standards and is covered by a 2-year warranty. Uses 4 AA batteries, included.

• Patented 3 LED UV lights with 395-415 nm wave length is optimum for a/c dye fluorescence
• Sweep mode function to pinpoint leak source with automatic calibration and reset to ambient
• UV wave-length: 395-415 nanometers
• Unique 120 x 160 full color graphic LCD screen with user friendly message and error screens
• 3 adjustable sensitivity levels, and 17 inches probe length
• Fit type: Universal Fit

User questions & answers

Question:	Is this a corona discharge or a heated diode sensor
Answer:	It's neither of those types. The sensor on the LD7 is a mildly heated solid electrolyte semiconductor sensor. The sensor detects reducing gases exemplified by hydrogen compounds and halogenated hydrocarbons. It has excellent sensitivity to all HFO, HFC, HCFC, and CFC refrigerants including blends and the new R-1234yf refrigerant. Because it doesn't draw huge power it's able to operate on four AA disposable batteries.
Question:	Does it work on R22 snd R410a
Answer:	Yes. The LD7 features a long life solid electrolyte semiconductor sensor technology that is designed to detect all CFC, HCFC, HFC, and HFO refrigerants including R-1234YF (HFO), R-134A (HFC), R-410A (HFC), R-22 (HCFC), R-407C (HFC), R-507 (HFC), R-12 (CFC), R-404C (HFC). The LD7 is designed to detect all SNAP approved refrigerant blends
Question:	does this comes with a case
Answer:	Yes, it comes with a case,
Question:	is this the same technology as the Prowler from JB
Answer:	The sensor technology is similar, but the features and functions of this product are different than what’s available on the JB Prowler product.

• AUTOMATIC: The world’s only leak detector with fully automatic sensitivity selection and control
• QUALITY DISPLAY: Features a simple, intuitive bar graph LED display
• ADVANCED SOFTWARE: This Leak Detector features 56 levels of sensitivity automatically selected by proprietary Powershift software
• PERFORMANCE: Optimal leak-finding performance under a broad range of conditions
• EXCEPTIONAL DESIGN: Ergonomic, high-impact housing with high output alarm speaker

User questions & answers

Question:	Where can i purchase the replacement sensors filters and tips
Answer:	Here where I love local hvac suppliers that stock this brand will get you the replacement filters and sensors.

Product features

Innovative Solutions in Product Design

CPS Products is a business built by technicians, for technicians. We design Tools for the Professional Service Technician. With the world’s most comprehensive range of Leak Detection technologies, Smart Diagnostic tools, and proven Maintenance Solutions, CPS Products has been The Workingman’s Choice since 1989.

LS2 Leak Seeker

• Simple, intuitive bar graph LED display5
• 6 levels of sensitivity automatically selected by proprietary Powershift software
• he only leak detector with fully automatic sensitivity selection and control. Simply turn it on and pinpoint the leak
• Designed and manufactured in U.S.A. with U.S. and globally sourced components.

LS790B Leak-Seeker

• Combines the most advanced microcomputer circuitry with field proven Ion-pump sensor technology creating a highly sensitive, accurate electronic refrigerant leak detector
• Over 128 computer generated tones and a high intensity bar graph display quickly alerts the user to varying halogen concentrations
• 10 sensitivity ranges enables the LS790B to detect leaks of all refrigerants

LS1 Leak-Seeker

• Detects refrigerants including those with hydrocarbon components (CFC, HCFC, HFC, HFO, NH3, HC. Hydrogen trace gas in 95% N2, 5% H2 mixture)
• Microprocessor controlled sensor improves sensitivity and reduces false alarms
• Optimal leak-finding performance under a broad range of conditions
• Software managed sensor rejuvenation at startup ensures highest sensitivity
• Simple, intuitive bar graph LED display

Product description

Application:

1. Leak detection of other systems and storage/recovery containers

This product works with all halogenated refrigerants (including chlorine and fluorine)

Including but not limited to CFCS such as: R12, R11, R500, R503etc...

HCFCs such as: R22, R123, R124, R502etc...

HFCs such as: R134a, R404a, R125etc...

Other mixtures can also be tested, such as AZ-50, HP62, MP39etc...

2. Detection of ethylene oxide leakage in hospital disinfection equipment (detection of halogen-carrying gas)

3. Detect SF-6 in high voltage circuit breaker

4. Detect most of the gases containing chlorine, fluorine and bromine (halogen gas)

5. Detect detergents used in dry cleaning equipment, such as carbon tetrachloride

6. Detect halogen gases used in fire suppression systems



Specification:

Condition: 100% Brand New

Material: ABS plastic

Color: As picture shwon

Power: 3V DC, 2 * No.2 alkaline batteries (Not Included)

Maximum sensitivity: according to for SAEJ1627 verification criteria: the guaranteed value for R12, R22 and R134a is 14g /year

Extreme sensitivity: for SF6 and all halogen-based refrigerants <3g / year

Operating temperature: 0-52°C

Battery life: about 30 hours of normal use

Accuracy: 3g / year

Response time: instantaneous

Reset time: 1 second

Preheat time: about 2 seconds

Device weight: 560g/17.6oz

Device size: 22.9 * 6.5 * 6.5cm/9 * 2.5 * 2.5in

Probe rod length: 35.5cm/14in



Package List:



1 * Halogen Leak Detector

1 * Storage Box

1 * User Manual

1 * Alternate Sensor Head

1 * Sensor Head Protective Cover

• ✅Advanced microprocessor. It uses digital signal processing technology better than the manipulating circuit and sensor head signals used. In addition, the number of components used in the circuit is reduced by approximately 40%, which improves reliability and performance.
• ✅The microprocessor monitors the sensor head and battery voltage in real time, up to 4000 times per second, and compensates for even the smallest fluctuations in signal pulsations. This makes the meter a stable and reliable inspection tool in almost any environment.
• ✅The seven-level free setting of sensitivity increases the sensitivity of the meter from level 1 to level 7 by 64 times; the unique three-color LEDs indicate the progressive and wide range of leak sizes.
• ✅Powered by two No.2 alkaline batteries(Not Included), wireless and portable. Equipped with high-strength box to protect detector. 35cm flexible stainless steel probe.
• ✅The touch keyboard controls all functions used; the novel housing design is designed for the user to grip and easy to operate; Leak detection of other systems and storage/recovery containers. This product works with all halogenated refrigerants (including chlorine and fluorine).

Product description

Affordable price, simple operation, and reliable performance make TEK-Mate the refrigerant leak detector of choice for thousands of technicians. See for yourself why TEK-Mate is the #1 selling refrigerant leak detector in the HVAC/R market.

• Sensitivity of 0.25 oz./year (7 g/year)
• Detects all CFCs, HCFCs, HFCs, and HFOs. A2L Certified
• Proven heated diode sensor for reliable leak checking
• Sensor Life: 100 hours
• No false alarms from soap solutions
• Automatic background adjustment ("zeroing")
• Runs on two D-cell alkaline batteries

User questions & answers

Question:	Does it detect r507 gas
Answer:	have not used 507 but understand it is a hfc blend so should work fine. have used it with 502 a few times with good results.
Question:	Does this have a built in pump
Answer:	Yes it has a pump. I used it today, found the leak. Im very happy with this leak detector.
Question:	Would this be a good tool for the automotive technician for r134a or is there a different tool suitable for the automotive technician for r134a
Answer:	Perfect for 134a Any cfc hfc or hcfc. 134a is a hfc refrigerant. I have had many leak detectors over the years and found this to be the best, so far
Question:	how much does a replacement sensor cost
Answer:	the sensor is already installed

Product description

With a positive ion emission-heated diode sensor and selectable sensitivity for greater accuracy, this BACHARACH refrigerant leak detector can quickly locate small, medium, or large leaks. Model features a visible LED leak rate indicator on the probe tip and an audible buzzer. Unit can detect as low as 0.006 oz./yr. and comes with a visual sensor calibration system (with included reference leak bottle). Refrigerant Leak Detector, 0.006 oz./yr.

• USA

User questions & answers

Question:	Has anyone used this for R410a systems? Mainly residential hvac units with slow leaks
Answer:	I have owned my hvac company for twenty years plus now and have nine of these units. They work great on all Freons. Make sure you don’t get moisture in the tip. If you do Johnstone will ship it to the manufacturer for repairs. Usually less then $100. Great devise.
Question:	Is this configured to find a leak before it happens
Answer:	This is a "sniffer" type leak detector. Only finds active leaks. Very precise though.