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LM150 Digital Manifold Gauges Digital AC Gauges
Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  1. LM150 Digital Manifold Gauges Digital AC Gauges
  2. Digital Manifold Gauges Digital AC Gauges
  3. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  4. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  5. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  6. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  7. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  8. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  9. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  10. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  11. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges
  12. AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges

AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges

(5 customer reviews)

US$159.00

Key Features
  • Dual Pressure Test
  • Refrigerant Database
  • Backlit LCD
Key Features
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AUTOOL LM150

Product Overview

The AUTOOL LM150 digital manifold gauge is designed for HVAC installation, refrigeration maintenance, and automotive A/C service. It supports dual pressure testing, dual temperature testing, digital readouts, multi-unit conversion, refrigerant filling and measurement, system evacuation, pressure leak testing, and a built-in 93-refrigerant database in a durable anti-slip body with a 3.5-inch backlit LCD and 1/4-inch standard interfaces.

Dual Pressure Test Dual Temperature Test 93 Refrigerants Vacuum & Leak Test
-101kPa-6MPaPressure Test Range
10MPaOverload Limit
4×AAPower Supply
3 YearsWarranty Support
AUTOOL LM150 digital manifold pressure tester for automotive AC and HVAC service Click to enlarge
AUTOOL LM150 digital manifold gauge front product view Click to enlarge
Before You Order And Use

Before You Order And Use

Check the instrument range, hose pressure rating, tested equipment rating, working environment, and personal protection requirements before connecting the LM150 digital manifold pressure tester.

Gauge Pressure Reading

Pressure measured by the LM150 digital manifold pressure tester is gauge pressure. Confirm the pressure type required by the system before interpreting readings.

Instrument Test Range

The pressure test range is -101kPa to 6MPa, equal to about -0.1bar to 60bar. Do not use it beyond the measuring range of the instrument.

Ultimate Pressure Limit

The instrument ultimate pressure / overload limit is 10MPa, equal to 100bar. This limit is not the same as the normal working range.

Standard Hose Limit

The standard hose maximum working pressure is 600PSI, approximately 4.13MPa / 41.3bar. The hose ultimate pressure is 3000PSI, approximately 20.68MPa / 206.8bar.

Check The Tested Device

Check the rated pressure of the equipment under test before connecting. If the included hose does not meet your pressure requirement, use a suitable replacement hose for testing.

Work Safely

Wear approved protective equipment and use the LM150 in a well-ventilated environment to help avoid exposure to toxic gases during refrigerant service.

Safety And Storage Notes

  • Do not use or store the device in high temperature, high humidity, flammable, explosive, or strong electromagnetic field environments.
  • Do not modify the internal circuit. Unauthorized modification may damage the instrument or create hazards.
  • Inspect pipe fittings, hoses, hose terminals, and valve stems before testing. Replace damaged parts before use.
  • Do not remove the high-pressure valve connection until the pressure drops to a safe point.
  • Different equipment and refrigerants may require different filling procedures. Follow the refrigeration system service requirements before charging.
Key Features

Key Features

LM150 combines refrigerant system service, high/low pressure and temperature readings, vacuum and leak testing, multi-unit display, two wired temperature clamps, and durable field-use hardware.

Multi-Mode A/C Service

Supports refrigerant filling and measurement, refrigerant system evacuation, pressure leak testing, vacuum pressure measurement, vacuum percentage measurement, leakage pressure measurement, and leakage time record.

HP / LP Data Display

Measures high-pressure and low-pressure line pressure, high-pressure and low-pressure line temperature, evaporation temperature, and condensation temperature for clearer service decisions.

93 Refrigerant Database

The built-in NIST-standard refrigerant database supports 93 refrigerants and helps display refrigerant-related operating data directly during service.

3.5-Inch Backlit LCD

The large backlit LCD helps users read pressure, temperature, mode, refrigerant, and test data clearly, including in darker working environments.

V-Shaped Ball Valve Control

The V-shaped ball valve opening design makes high and low pressure valve control easier, more direct, and more durable than ordinary knob-style valve operation.

IP54 Anti-Slip Housing

The body uses high-strength engineering plastics and flexible anti-slip silicone. The shell is IP54-rated and designed for stable handling in workshop use.

Two Wired Temperature Clamps

The kit includes two wired clip-on temperature probes for real-time evaporation and condensation temperature measurement on refrigeration pipes.

Multi-Unit Conversion

Supports pressure unit switching among kPa, MPa, bar, inHg, and psi, plus temperature switching between °C and °F.

Durable Interface Design

Long-life valve switches, refrigerant observation window, pressure release valve, and 1/4-inch standard interfaces improve daily service usability.

AUTOOL LM150 function display for HP LP temperature pressure vacuum and leak measurement Click to enlarge
AUTOOL LM150 built-in 93 NIST standard refrigerant database Click to enlarge
AUTOOL LM150 3.5 inch high definition backlit display Click to enlarge
AUTOOL LM150 pressure and temperature unit conversion display Click to enlarge
AUTOOL LM150 V-shaped ball valve IP54 material and clip-on probe feature image Click to enlarge
Specifications

LM150 Product Specifications

Review the pressure range, vacuum range, temperature range, accuracy, battery type, size, weight, and interface information before using LM150 on refrigeration or A/C systems.

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Product And Application
ProductAUTOOL LM150 Digital Manifold Pressure Tester
ApplicationHVAC installation, refrigeration equipment testing, refrigeration equipment maintenance, automotive A/C service, air conditioners, and cold storage systems
Pressure TypeGauge pressure
Interface1/4-inch standard interface design
Pressure And Vacuum
Pressure Test UnitkPa, MPa, bar, inHg, psi
Pressure Test Range0kPa-6000kPa / 0-6MPa
Pressure Test Resolution1kPa
Pressure Test Accuracy±0.5% FS + 5dgt
Pressure Overload Limit10000kPa / 10MPa / 100bar
Vacuum Test TypeRelative vacuum
Vacuum Test UnitkPa, MPa, bar, inHg, psi
Vacuum Test Range-101kPa-0kPa
Vacuum Test Resolution1kPa
Standard Hose Working Pressure600PSI / approx. 4.13MPa / 41.3bar
Standard Hose Ultimate Pressure3000PSI / approx. 20.68MPa / 206.8bar
Temperature And Refrigerants
Temperature Test Unit°C, °F
Temperature Test Range-40°C to 150°C / -40°F to 302°F
Temperature Test Resolution0.1°C / 0.1°F from -40 to 99.9; 1°C / 1°F from 100 to upper range
Temperature Test Accuracy±0.5°C + 2dgt / ±0.9°F + 2dgt
Refrigerant DatabaseBuilt-in 93 refrigerants according to NIST standard
Temperature ProbesTwo wired clamp-on temperature probes included
Hardware
Display3.5-inch backlit LCD
HousingHigh-strength engineering plastic body with flexible anti-slip silicone and IP54-rated shell
Power Supply4 × 1.5V AA / LR6 batteries
Dimension240 × 145 × 50mm
Weight950g
Warranty Support3-year support for eligible non-human damage cases; lifetime maintenance support
AUTOOL LM150 digital manifold pressure tester specification product view Click to enlarge
Core Specifications
Pressure TypeGauge pressure
Pressure Range0kPa-6000kPa / 0-6MPa
Vacuum Range-101kPa-0kPa
Overload Limit10MPa / 100bar
Hose Working Pressure600PSI / approx. 4.13MPa
Temperature Range-40°C to 150°C / -40°F to 302°F
Refrigerants93 refrigerants
Power Supply4 × 1.5V AA / LR6 batteries
Dimension240 × 145 × 50mm
Weight950g
How To Use

How To Use

LM150 supports refrigerant filling and pressure inspection, vacuum operation, and pressure leak testing. Use the manual and the specific refrigeration system procedure before service.

Refrigerant Filling & Pressure Inspection

Turn off the blue and red valves, power on the instrument, select pressure test status, connect according to the system direction, vent air through the pressure release valve, then fill through the correct valve according to system conditions.

Vacuum Operation

Turn off the blue and red valves, power on the instrument, switch to vacuum test mode, select the reading unit, zero the pressure display if needed, connect the system, then run the vacuum pump and close valves after vacuuming.

Pressure Leak Test

With the blue and red valves turned off, power on the instrument and switch to pressure leak test mode. The display records initial pressure, instant pressure, ΔP pressure difference, and test time.

Temperature Probe Reading

Connect the wired clamp-on probes to the T1 and T2 sockets and make sure they fully contact the refrigeration pipes. The LCD can display real-time temperature data when probes are connected.

Use Notes

  • When the instrument is turned on, if the high and low pressure display area shows non-zero digits, press and hold the Zero button until it returns to zero.
  • For refrigerant filling, do not remove the high-pressure valve connection until the pressure drops to a safe point.
  • The filling operation of different equipment or refrigerants may vary. Read the specific service requirements to avoid user injury or equipment damage.
  • The manual describes SH / SC display when the tested refrigerant is preset and clamp-on probes are connected. If subcooling / superheat is a required workflow, confirm model suitability before ordering.
Product Comparison

Product Comparison

Compare LM150 with LM70, LM100, LM120, LM120+, LM130, and LM160 before choosing the right refrigerant database, pressure valve, temperature clamp, visible window, program control, pressure unit, and vacuum unit.

LM150 FocusLM150 supports vacuuming mode, refrigerant mode, pressure leak testing, trichromatic tube, two wired temperature clamps, foldable hook, refrigerant visible window, 93 refrigerants, high/low pressure valves, and kPa / MPa / bar / inHg / psi units.
Compared With LM120 / LM120+LM120 and LM120+ list 92 refrigerants. LM150 lists 93 refrigerants and adds the two wired temperature clamp configuration shown in the comparison chart.
Compared With LM160LM160 is the higher-end smart option with program control system, 8 languages, 95 refrigerants, and two-side handrails. Choose LM160 if program control is required.
Decision CheckBefore ordering, compare refrigerant database size, temperature clamp requirement, pressure and vacuum units, visible window, valve type, handrail design, and program control needs.
Comparison chart of AUTOOL air conditioning system testers including LM70 LM100 LM120 LM120 Plus LM130 LM150 and LM160 Click to enlarge
AUTOOL LM150 packing list with main unit storage case hoses adapters manual retail box and two temperature clamp probes Click to enlarge
What Is In The Box

What Is In The Box

The packing list image shows the LM150 main unit and included accessories. Packing List uses only one most relevant package image to keep the Description compact and clear.

Main UnitAUTOOL LM150 digital manifold pressure tester
Storage CaseHard carrying case shown in the package image
HosesRed, blue, and yellow hoses shown in the package image
AdaptersSmall adapters and brass connector shown in the package image
Temperature ClampsTwo wired clip-on temperature probe clamps
DocumentationUser manual and retail box
Related Products

Related Products

Compare related AUTOOL digital manifold gauge models before choosing the right refrigerant database, temperature clamp support, program control, and workshop service capability.

Manual And Downloads

Manual And Downloads

Download the LM150 manual for pressure range warnings, refrigerant filling, pressure inspection, vacuum operation, pressure leak testing, common problems, maintenance, and warranty information.

AUTOOL LM150 digital manifold pressure tester user manual preview Click to enlarge

AUTOOL LM150 User Manual

Open the PDF manual for setup, specifications, operation modes, troubleshooting, and safe-use instructions.

Download Manual

Need Pressure Or Compatibility Confirmation?

Contact AUTOOL Store before ordering if you need to confirm pressure range, standard hose working pressure, refrigerant compatibility, interface requirements, replacement hoses, package contents, or model selection.

Emailsupport@autoolstore.com WhatsApp+86 189 2647 7404

Questions And Answers

These answers cover LM150 use cases, pressure range, hose limits, refrigerant database, battery, temperature clamps, model differences, safety checks, and common troubleshooting items.

Warranty And Contact

Warranty And Contact

For LM150 pressure range confirmation, hose pressure limits, refrigerant database questions, A/C service setup, package contents, manual support, troubleshooting, accessories, or model selection, contact AUTOOL Store directly.

Pre-Sales And Product Support

Use support if you need help confirming LM150 pressure range, standard hose limits, refrigerant compatibility, refrigerant filling workflow, vacuum operation, pressure leak test setup, temperature clamp use, package contents, or comparison with LM120, LM120+, and LM160.

  • 3-year warranty support for eligible non-human damage cases
  • Lifetime maintenance support and accessory guidance
  • Pressure range and hose pressure confirmation
  • Refrigerant database and system compatibility confirmation
  • Temperature clamp, hose, adapter, and package-content confirmation
  • Low-battery, hose, valve stem, refrigerant filling, and leak-point troubleshooting
  • LM120 / LM120+ / LM150 / LM160 model selection support
  • Support replies as soon as possible, generally within 24 hours
Email Supportsupport@autoolstore.com WhatsApp Support+86 189 2647 7404

Customer Reviews

  1. 5
    (5 customer reviews)
    100% of customers recommend this product.
    5 Stars100%4 Stars0%3 Stars0%2 Stars0%1 Star0%

  2. Arabadzhiev –

    I received it! Everything’s working fine.

    0 of 0 found this review helpful

  3. Manfred –

    Great!

    0 of 0 found this review helpful

  4. Amy Dru –

    Pros:
    1. LCD read out means no more bouncy gauges and guess work.
    2. Takes 2 batteries – easy enough.
    3. Materials are heavy duty and the unit appears very well made.
    4. Reads low and high pressure side.
    5. Worked with my vacuum pump and filling setup – required same adapters most require.

    Cons:
    1. Something this nice deserves a nice storage case to protect it – most people will just leave it hanging up though.

    0 of 0 found this review helpful

  5. Victoria Leigh –

    Diese Monteurshilfe ist top. Sehr robust und nach neuestem Standart. F¨¹r mich die richtige Entscheidung.

    0 of 0 found this review helpful

  6. Ford Gladstone –

    Looks awesome it’s going to be a while before I get around to using it

    0 of 0 found this review helpful
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LM150 Digital Manifold Gauges Digital AC Gauges
AUTOOL LM150 Digital Manifold Gauges Digital AC Gauges

US$159.00

Add to cart This product has multiple variants. The options may be chosen on the product page