Danfoss GD Heavy Duty fixed gas detection unit, code 148H6060, a factory-calibrated wall-mount detector for ammonia (R717) in refrigeration machinery rooms, cold stores and process plant. Electrochemical sensing element with a 0–300 ppm measuring range and two-level alarm relays (pre-alarm 25 ppm, main alarm 150 ppm). On-board LCD display for local annunciation. The Heavy Duty version ships with an ATEX/IECEx certificate for installation in classified hazardous areas, operating -20 to +50 °C. Supplied as a complete unit with mounting kit, cable gland and a factory calibration certificate. Supply 16–28 V DC. Integrates with Danfoss AK-SM system managers and standard alarm panels. HS 9027.10. OEM P/N 148H6060.
| Type | Gas detection unit — GD Heavy Duty |
| Code number | 148H6060 |
| Detected gas | ammonia (R717) |
| Sensor technology | electrochemical |
| Measuring range | 0–300 ppm |
| Pre-alarm (low) set point | 25 ppm |
| Main alarm (high) set point | 150 ppm |
| Local annunciation | LCD display |
| Supply voltage | 16–28 V DC |
| Operating temperature | -20 to +50 °C |
| Hazardous-area | ATEX/IECEx certificate supplied |
| Enclosure | wall-mount, includes mounting kit and cable gland |
| Supplied with | factory calibration certificate |
| Approvals | ATEX; IECEx; EU RoHS; China RoHS |
| EAN | 5702428668125 |
| Net weight | 0.007 Kilogram |
| Product group | Sensors |
| Alarmlimits high [ppm] sensor1 | 150 ppm |
| Alarmlimits low [ppm] sensor1 | 25 ppm |
| China RoHS compliance | Yes |
| Division | 40 |
| Equipment | LCD Display |
| EU RoHS compliance | Yes |
| Frequency [Hz] | 50/60 Hz |
| Gas detecting sensor version | Heavy Duty |
| Parts included | ATEX/IECEx certificate |
| PFAS content [Yes/No] | No |
| Power consumption [A] | 0.13 A |
| REACH Candidate List substances | No |
| Refrig. range [ppm] sensor1 [max] | 300 ppm |
| Refrig. range [ppm] sensor1 [min] | 0 ppm |
| Refrigerants | R717 |
| Relative humidity (RH) [%] [max] | 90 % |
| Relative humidity (RH) [%] [min] | 15 % |
| Response delay [s] | 0 s |
| Sensor 1 type | Electrochemical |
| Supply voltage [V] DC [max] | 28 V |
| Supply voltage [V] DC [min] | 16 V |
| Temperature range [°C] [max] | 50 °C |
| Temperature range [°C] [min] | -20 °C |
| Temperature range [°F] [max] | 122 °F |
| Temperature range [°F] [min] | -4 °F |
| Temperature range | -20 to +50 °C |
| MOQ | 1 |
Confirm the target gas (ammonia (R717)), detection range (0–300 ppm) and supply voltage (16–28 V DC) match the installation before ordering; the sensor element is gas-specific and factory-calibrated. This Heavy Duty version is ATEX/IECEx-certified for hazardous areas — do not substitute a standard version where a certified unit is specified.