Kilos as pressure unit?

[nedhalnooh]

At a poultry slaughterhouse, a cage washer has the following pump requirements:
- flow: 40 m3/h
- pressure: 3.5 kilos!!!
- power outlet: 5.5 kW

The manufacturer is a Dutch company.
What does "kilos" mean here? Do they mean kgf/cm2?

 

[zdas04]

That is the only reasonable assumption (although there is nothing reasonable about kgf or about kgf/cm^2). I'm really not sure what the driving force behind imposing another unit of measure, especially since 1 kgf/cm^2 is 1.019 bar so what the heck do you gain?

David Simpson, PE
MuleShoe Engineering

Law is the common force organized to act as an obstacle of injustice Frédéric Bastiat

 

[nedhalnooh]

Exactly! And the irony is that we end up making "assumptions" in "specifications"!!!
Actually I wouldn't make such an assumptions based on the presence of "kilo" in kgf/m2. My assumption was based on the characteristic curve of the existing pump (unfortunately not the original) which has gives a head of 35m at optimum efficiency. 35m head is equivalent to 3.5 kgf/m2.

 

[chicopee]

Contact the cage manufacturer for more details about the unit. Never assume as it makes an A__ out of you and me.

 

[nedhalnooh]

I did fax them, but no reply.

 

[LittleInch]

Using it as kg/cm2 (quite a common way of expressing pressure for some reason in mainland Europe) gives you 5.5kW shaft power for the flow and pressure stated, so I think it's a fairly safe assumption, but note somewhere in writing that it is an assumption to cover yourself.

My motto: Learn something new every day

Also: There's usually a good reason why everyone does it that way

 

[chicopee]

Is the pump specification from the owner's manual? If so just attached that page so that we can look at it.