Limit Salesforce objects search by record type in Free or Express Edition?
Can I limit Salesforce object search by record type or combination of record types in Free or Express Edition?
Yes, you can use Record Types in Coveo for Salesforce Free and Express.
Since Record Types are objects, you should use a field of that object, such as `@sfrecordtypename=="Your Record Type name"`, which only returns your items with the specified record type name. For more information on the Coveo query syntax, I welcome you to read Understanding the Coveo for Salesforce Query Syntax.
Please note that, if you have just created your record type, you might have to wait a bit before being able to query it (see Using Custom Fields in Coveo for Salesforce Express).