100 to 0.05 µm, every figure a protection rating
A protection rating is the rating the operating element must hold for the cold plate. Absolute retention 99.98%; nominal 90%.
nominal 90%
The ladder and the channel
100 to 0.05 µm; each a protection rating.
Cold-plate microchannels run 100–300 µm, DLC plates to 100–400 µm. Half the channel width is the blockage threshold; a 5 µm rating clogs quickly, so prefiltration goes upstream.
What 99.98% holds at
| Row | Value |
|---|---|
| Absolute media | 99.98% |
| Nominal media | 90% |
| Beta | upstream ÷ downstream at size x |
| Worked reference | beta 200 at 3 µm = 99.5% |
| Bands | 2–10 poor; 75+ minimum; 200–2000 top |
| Test method | ISO 16889 multi-pass |
| Limits | stated particle size only; new element only |
The mechanical rows every code shares
Download the EMS-CF-F5-40 specification sheet PDF| Parameter | Value |
|---|---|
| Length | 10, 20, 40 in · 254, 508, 1016 mm |
| Outside diameter | 68.6 mm |
| Media | PP pleated depth; also PP, glass fibre, PES |
| Seals | NBR, EPDM, silicone, FKM, PTFE-encapsulated |
| Clean ΔP | 0.17 bar, 2 psid at 2 µm |
| Change-out ΔP | 35 psid, 2.4 bar |
| Maximum ΔP | 60 psid, 4.1 bar at 20 °C |
| Maximum temperature | 80 °C; steam 121 °C |
| Housing | glass-filled polypropylene |
| Dirt-holding capacity | open row |
One rule across the pressure range
| Point | Value |
|---|---|
| Clean 2 µm | 0.17 bar · 2 psid |
| Change-out | 35 psid · 2.4 bar |
| Maximum | 60 psid · 4.1 bar at 20 °C |
| Clean to change-out | ~17× |
| Clean to maximum | ~30× |
Past change-out. Flow and heat rejection fall; the server downclocks.
Past maximum. Beyond the published differential limit.
Media and seals
Media
PP · glass fibre · PES · stainless mesh
PP depth: support, caps, core, cage all PP
Seals
NBR · EPDM · silicone · FKM · PTFE-encapsulated
Field name: Ethylene propylene (EPDM)
PG25 is 25% v/v propylene glycol with Hybrid-OAT inhibitors; the wrong elastomer swells or shrinks.
The envelope and the record
254–1016 mm long, 68.6 mm OD; large format 152 mm OD.
80 °C; steam 121 °C.
ISO 4406; ISO 16232, VDA 19.1.
ΔP, hours, ISO 4406 trend.
Supply-chain particle thresholds are moving from 100 and 200 µm toward 50 µm; those are particle counts, not a rating.
Housing open, element part-lifted.
Bag first, cartridge second
A placement map, not a commissioning procedure.
Codes here cover stages 1, 2 and 5. Staging at 100, then 50, then 25 µm is commissioning staging, owned by the commissioning guide, and not this map.
Thirteen codes, one row each
Every code with its own sheet: rating, retention basis, length.
| Code | Protection rating | Length, in |
|---|---|---|
| EMS-CF-F100-10 | 100 µm nominal | 10 |
| EMS-CF-F10-20 | 10 µm nominal | 20 |
| EMS-CF-F5-10 | 5 µm nominal | 10 |
| EMS-CF-F5-20 | 5 µm nominal | 20 |
| EMS-CF-F5-40 | 5 µm nominal | 40 |
| EMS-CF-F1-10 | 1 µm absolute | 10 |
| EMS-CF-F1-20 | 1 µm absolute | 20 |
| EMS-CF-F1-40 | 1 µm absolute | 40 |
| EMS-CF-F0.45-20 | 0.45 µm absolute | 20 |
| EMS-CF-F0.45-40 | 0.45 µm absolute | 40 |
| EMS-CF-F0.2-40 | 0.2 µm absolute | 40 |
| EMS-CF-F0.1-40 | 0.1 µm absolute | 40 |
| EMS-CF-F0.05-40 | 0.05 µm absolute | 40 |
Not every rating comes at every length; an adjacent grade set covers 2 to 90 µm at 20, 40 and 60.