Steam submetering?

[Michael Healy]

Has anyone successfully submetered a steam heating system? I'm purchasing an old Victorian that's been converted to multifamily and has a single pipe steam system on an oil furnace. Conversion to gas burner will be relatively straightforward, and I've read that there are submeters for steam. Any reason I wouldn't be able to successfully shift heating costs to the tenants? The property is in Mass where the requirement for tenant paid heat is specify in lease and submeter. Thanks.