Read Both Pressures and Pipe Temperatures for SH/SC in One Gauge
The LM150 reads high- and low-side gauge pressure alongside two clamp temperatures, then calculates superheat and subcooling from your selected refrigerant. It also monitors vacuum and timed pressure retention for automotive A/C, household A/C and cold-storage service.
- 93 Refrigerants
- 2 Temperature Clamps
- SH / SC
- -101 kPa to 6 MPa
- IP54 Housing
Key Features
-
Dual Pressure, Dual Temperature
High- and low-side pressure plus T1/T2 pipe temperatures, with evaporation and condensation temperatures shown together on the backlit screen.
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NIST-Standard Refrigerant Library
Select the known refrigerant from 93 stored profiles to view its operating data during service.
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Superheat and Subcooling
Calculated from the selected refrigerant, the pressure readings and stable clamp temperatures.
-
Vacuum Monitoring
Follow vacuum pressure and vacuum percentage during evacuation.
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Pressure-Retention Test
Records initial pressure, current pressure, the difference and elapsed time to judge system tightness.
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Charging Assistance
V-shaped ball valves, a refrigerant sight window and three-color hoses support the system-specific charging procedure.
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Built for Workshop Handling
Engineering-plastic body with anti-slip silicone, a foldable hook and a pressure release valve.
More Specifications
| Pressure test range | 0 to 6000 kPa |
|---|---|
| Vacuum test range | -101 to 0 kPa |
| Hose working pressure (metric) | Approx. 4.13 MPa / 41.3 bar |
LM150 vs LM160
| LM150 | LM160 | |
|---|---|---|
| Refrigerant database | 93 | 95 |
| Program-controlled menu | No | Yes |
| Side handrails | No | Yes |
| Wired temperature clamps | 2 included | 2 included |
What’s in the Box
- LM150 digital manifold gauge
- Hard storage case
- Red, blue and yellow service hoses
- Two wired T1/T2 temperature clamps
- Small adapters and brass connector
- User manual and retail box
How to Use
- Identify the refrigerantConfirm the exact refrigerant from the vehicle or equipment information before selecting a profile.
- Check ratings and hardwareInspect valve stems, nylon seals, fittings and hoses, and compare the system, gauge and hose working limits.
- Power, zero and connectInstall four AA batteries, close the valves, zero any residual reading and connect the correct hose ends.
- Run the selected modeUse live pressure, vacuum or retention mode; clamp both probes firmly to the pipes for temperature and SH/SC.
- Review and disconnectCompare results with the service procedure, close the valves, let high-side pressure drop to a safe point and disconnect in the prescribed order.
Full measurement, charging and troubleshooting steps: LM150 user manual (PDF).
Good to Know
Caution
- Work to the lowest of the system, gauge and hose working ratings. The 10 MPa overload limit and the 3000 PSI hose burst value are not operating targets.
- Do not remove the high-pressure connection until pressure has dropped to a safe point.
- Wear protective equipment and ventilate the area. Do not use or store the gauge in high heat, high humidity, flammable, explosive or strong electromagnetic environments.
- Do not modify the internal circuit.
Care
- Hose-end nylon pads wear with use; replace worn pads, hoses or fittings before testing.
- Tighten the copper plug screw on the middle refrigerant inlet before or after operation as required.
- Replace the batteries when the low-power sign appears.
FAQ
Does the LM150 identify the refrigerant?
No. Select only a refrigerant already confirmed from the vehicle or equipment information.
Can it locate a leak?
No. A pressure change in the retention test can flag a problem; use a separate approved method to find it.
Why might refrigerant filling fail?
Check the hose ends: connect the end with a valve core to the refrigeration system and the end without a core to the gauge, then inspect seals, fittings and valves.
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