LDM150/ LDM150R
Simple. Safe. Monitors.

Product configurator
Gemini™ MxG5xx
LDM150 and LDM150R are simple, reliable and safe solutions for standalone constant monitoring of ANY refrigerant gas. These monitors are a true "plug and play" option! See how these monitors fit any application.
LDM150 uses an integrated sensor for a compact, all-in-one solution. LDM150R uses a remote sensor for applications where the sensor should be installed separately from the monitor. See more details in the specifications tab.
Advantages
- Remote and integrated sensor options
- Low maintenance, single point calibrations
- Easy field service
- Three adjustable alarm setpoints
- Low or high voltage operation
- Three relay outputs tie to any system or device
- Designed for any size application
- Factory calibrated
- Detects all CFCs, HFCs, HFOs, HCFCs, CFCs, HCs, CO2, and NH31
1 HCs, CO2, and ammonia require a monitor designed for that specific application. See part numbers tab for specific applications.
Specifications
Compatible refrigerants | 743-202-HFC: R22, R32, R134a, R404a, R407c, R410a, R422b, R448a, R449a, R452a, R452b, R454b, R507 (AZ50), R1234yf, and more 743-202-CO2: CO2 (carbon dioxide) 743-202-NH3: NH3 (ammonia) |
Alarm indication | Three alarm levels with relay outputs (5A) |
Cable length | Not included (user provided) |
Power input | 12 - 24 V (AC/DC), 50 - 60 Hz |
Certifications | CE IP54 |
Compatible refrigerants | 743-203-HFC: R22, R32, R134a, R404a, R407c, R410a, R422b, R448a, R449a, R452a, R452b, R454b, R507 (AZ50), R1234yf, and more 743-203-CO2: CO2 (carbon dioxide) 743-203-NH3: NH3 (ammonia) |
Alarm indication | Three alarm levels with relay outputs (5A) Integrated siren and flashing light |
Cable length | Not included (user provided) |
Power input | 12 - 24 V (AC/DC), 50 - 60 Hz 230 V (AC/DC) (High voltage models only) |
Certifications | CE IP67 |
Compatible refrigerants | R290 (propane), R600 (isobutane), R441a |
Alarm indication | Three alarm levels with relay outputs (5A) |
Cable length | 5m (16.5 ft.) |
Power input | 12 - 24 V (AC/DC), 50 - 60 Hz |
Certifications | CE IP56 ATEX |
LDM150 | |
743-202-HFC | LDM150 (Integrated sensor), for HFCs, CFCs, HCFCs, HFOs, and A2Ls |
743-202-CO2 | LDM150 (integrated sensor), for CO2 (carbon dioxide) |
743-202-NH3 | LDM150 (Integrated sensor), for NH3 (ammonia)
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LDM150R | |
743-203-HFC | LDM150R (Remote sensor), for HFCs, CFCs, HCFCs, HFOs, and A2Ls |
743-203-CO2 | LDM150R (Remote sensor), for CO2 (carbon dioxide) |
743-203-NH3 | LDM150R (Remote sensor), for NH3 (ammonia) |
743-203-R290 | LDM150R (Remote sensor), for hydrocarbons (A3 flammable refrigerants), ATEX |
743-600-G1 | MCT150 Calibration Tool (includes 743-706-G1) |
743-707-G2 | Siren/flasher, blue |
743-707-G1 | Siren/flasher, red |
743-700-G1 | Replacement sensor for LDMR (CO2) |
743-701-G1 | Replacement sensor for LDM150 (CO2) |
743-704-G1 | Replacement sensor for LDM150/LDMR (HFC) |
743-703-G1 | Replacement sensor for LDM150/LDM150R, NH3 (ammonia) |
743-702-G1 | Replacement sensor for LDM150R (R290) w/ ATEX Cable |
743-705-G1 | Replacement sensor module for MCT150, NH3 (ammonia) |
743-706-G1 | Replacement Sensor module for MCT150 (HFC/R290) |