HONG KONG market sentiment is tense ahead of Tuesday's meeting of the United States' Federal Reserve which is widely expected to result in a further interest rate rise. Analysts are unanimous the Fed's Open Market Committee will raise rates by at least 0.5 per cent and there is expectation that a larger rise could be on the cards. Tomorrow's trading is expected to be quiet in the lead-up to the meeting. An increase of less than 0.75 per cent would result in the Hang Seng Index drifting for the remainder of the year, said a Standard Chartered Securities spokesman. A Citibank Global Asset Management spokesman, meanwhile, said a rise of 0.5 per cent would meet local market expectations. Financial markets have reacted badly to the uncertainty surrounding the timing of interest rate moves rather than the increase in itself. Frederick Tsang, research head at Prime-East Securities, said an interest rate rise of one per cent would be needed to end uncertainty that further increases would not be forced before the end of the year. US economic data have shown the US economy to be still on a high-growth track and more inflationary than previously thought. Since Alan Greenspan became chairman of the Fed, the maximum interest rate rise imposed has been 0.5 per cent.