Judge V V Bambarde found the constable Devidas Devkate (40) guilty under the Prevention of Corruption Act.
The judge also imposed a fine of Rs 10,000 on Devkate while passing the order yesterday.
On May 7, 2008, Devkate demanded Rs 400 from a person, against whom a non-cognisable offence had been registered, for not arresting him.
When the person approached the ACB, it laid a trap and arrested the constable.