My general poker philosophy is to raise with any hand that I decide to play to try to limit the number of players in the hand. My standard raise is 3x + 1x for each limper in the pot in front of me. With small pairs, I'm basically set mining, so I don't want to get too carried away pre-flop with a hand that I might have to throw away after the flop. At the same time I don't want to broadcast weakness by putting in a smaller raise or limping.
One of the benefits of being seen as a tight player who doesn't raise light is that I can often pick up the blinds and antes simply by raising. But like I said I don't want to get too carried away with small pairs pre-flop, so I probably won't go above 3x even with limpers in front of me. And, depending on how many limpers there are in front of me, I might actually limp in, rather than raising at all. One of the other benefits of always raising to 3x so often is that when I min raise, it tends to look suspicious, like I'm trying to get action with a big hand. So, sometimes, when there are no limpers in front of me I might only put in min raise. That way I'm not risking too much, I may still be able to limit the number of players entering the pot behind me, and might even end up taking down the pot before the flop if the players behind me think that I might be up to something.
How I proceed after the flop is going to depend on the number of players in the pot and the flop itself. Again, one of the benefits of my tight image, I can often get away with representing having connected with any big cards that land on the flop. But I still don't want to get too carried away, because I know that, because of my tight image, a lot of players are reluctant to call me light. I also know that I can often get away with a check, because I'm known to switch it up from leading right and checking and trapping. So I might be able to get two more chances to make a set without investing any more chips. The flipside to that is that I might also be giving my opponent the free card that they need to draw out on me.