M HX Series Heated Modular Adsorption Dryers
−40 °C dew point on a fraction of the purge
Heated modular adsorption dryers from 6.5 to 55 Nm³/min. The same modular chamber construction as the M NX, with an electric heater on the regeneration air — deeper dew point, a far longer cycle and less air thrown away. Purge falls to 5 % (3 % minimum) and the cycle stretches from minutes to hours. A twin-tower CH build reaches −70 °C.
Models: M50HX to M500HX · 11 models + CH tower · Compressed air dryers
- −40 °C Standard dew point
- −70 °C On the CH tower build
- 5 % Purge air, 3 % minimum
- 6.5–55 Nm³/min
Key specifications
| Pressure dew point | ≤ −40 °C, guaranteed |
|---|---|
| Purge air, published | 5 % standard, 3 % minimum |
| Cycle time | Adjustable — see technical annex |
| Working pressure | 6 – 10 bar g (7 bar g rating) |
| Maximum inlet air temperature | 38 °C (hard limit) |
| Ambient temperature | 2 – 45 °C |
| Pressure drop at full load | 0.21 bar |
| Regeneration | Heated purge at ≈ 180 °C |
| Inlet oil content | Oil-free or ≤ 0.1 ppm |
| Noise | Below 70 dB at 1 m |
Why this range
- Regeneration air heated to about 180 °C strips far more water per unit volume
- ≤ −40 °C pressure dew point guaranteed on every model
- Hours per tower instead of minutes — valves and desiccant see far fewer cycles
- Smaller frames run on 220 V single phase
- The middle route: less purge than heatless, less capital and complexity than zero purge
Models and technical data
M HX Series — heated modular
| Model | Nm³/min | scfm | Air connection | Rated power kW | Alumina kg | Sieve kg | L × W × H mm | kg |
|---|---|---|---|---|---|---|---|---|
| M50HX | 6.5 | 250 | G1-1/2" / DN40 | 2.15 | 32 | 34 | 900 × 450 × 1850 | 205 |
| M75HX | 10.5 | 403 | G2" / DN50 | 2.15 | 55 | 65 | 1074 × 450 × 1850 | 270 |
| M100HX | 13.5 | 518 | G2.5" / DN65 | 3.15 | 70 | 70 | 1248 × 450 × 1850 | 340 |
| M120HX | 17 | 653 | G2.5" / DN65 | 4.15 | 75 | 100 | 1422 × 450 × 1850 | 408 |
| M150HX | 21.5 | 826 | G2.5" / DN65 | 4.15 | 105 | 110 | 1596 × 450 × 1850 | 475 |
| M180HX | 25 | 960 | G2-1/2" / DN65 | 5.20 | 120 | 130 | 1770 × 400 × 1850 | 568 |
| M200HX | 28.5 | 1095 | G3" / DN80 | 6.15 | 140 | 150 | 1248 × 876 × 1850 | 690 |
| M300HX | 37 | 1421 | DN100 | 7.15 | 130 | 140 | 1422 × 876 × 1850 | 820 |
| M350HX | 41.5 | 1594 | DN100 | 8.15 | 210 | 210 | 1596 × 876 × 1850 | 980 |
| M450HX | 50 | 1920 | DN100 | 10.15 | 240 | 250 | 1770 × 876 × 1850 | 1120 |
| M500HX | 55 | 2112 | DN125 | 12.15 | 280 | 280 | 1944 × 876 × 1850 | 1320 |
At 7 bar g, 38 °C inlet air, ≤ −40 °C pressure dew point. kW is the installed rating including the heater.
CH tower build — down to −70 °C
| Model | Nm³/min | scfm | Air connection | Rated power kW | Supply | L × W × H mm | kg |
|---|---|---|---|---|---|---|---|
| CH10HX | 1.5 | 58 | G1" | 0.9 | 380 V 3-ph 50 Hz | 670 × 580 × 1695 | 95 |
| CH20HX | 2.5 | 96 | G1" | 1.7 | 380 V 3-ph 50 Hz | 730 × 630 × 1805 | 125 |
| CH30HX | 3.8 | 146 | G1½" | 1.7 | 380 V 3-ph 50 Hz | 840 × 570 × 1690 | 180 |
| CH50HX | 6.5 | 250 | G1½" | 2.5 | 380 V 3-ph 50 Hz | 1020 × 610 × 1710 | 315 |
| CH75HX | 10.5 | 403 | G2" | 3.7 | 380 V 3-ph 50 Hz | 1160 × 680 × 1900 | 448 |
| CH100HX | 13.5 | 518 | G2" | 3.7 | 380 V 3-ph 50 Hz | 1160 × 680 × 2200 | 540 |
| CH120HX | 17 | 653 | DN65 | 3.7 | 380 V 3-ph 50 Hz | 1195 × 720 × 2175 | 610 |
| CH150HX | 21.5 | 826 | DN80 | 6.1 | 380 V 3-ph 50 Hz | 1280 × 980 × 2310 | 740 |
| CH180HX | 25 | 960 | DN80 | 10 | 380 V 3-ph 50 Hz | 1350 × 930 × 2450 | 850 |
| CH200HX | 28.5 | 1095 | DN80 | 10 | 380 V 3-ph 50 Hz | 1460 × 1060 × 2320 | 1040 |
| CH250HX | 32 | 1229 | DN80 | 10 | 380 V 3-ph 50 Hz | 1460 × 1060 × 2510 | 1150 |
| CH300HX | 37 | 1421 | DN100 | 10 | 380 V 3-ph 50 Hz | 1580 × 1080 × 2460 | 1280 |
Rated at 0.7 MPa inlet, 10–35 °C inlet air (40 °C limit).
Heated against heatless at 30 Nm³/min
| At 30 Nm³/min | Heatless M NX | Heated M HX |
|---|---|---|
| Purge air, published | 7 % ≈ 2.1 Nm³/min | 5 % ≈ 1.5 Nm³/min |
| Equivalent compressor power | ≈ 11 kW, continuous | ≈ 8 kW, continuous |
| Dryer electrical load | Controls only | Heater, drawn intermittently |
| Pressure dew point | −20 °C | −40 °C |
| Adsorption cycle | Short | Far longer |
| Desiccant working life | Shorter — cycled constantly | Longer — far fewer cycles |
| Capital cost | Lower | Higher |
Indicative; replaced by a calculation on your own flow profile before any offer.
Where it is used
- Instrument air to −40 °C
- Pharmaceutical and API plants
- Electronics and semiconductor
- Paint and powder coating
- Nitrogen generator feed