Sentinel Capital Partners announced it has sold portfolio company Chromalox, a global designer and manufacturer of highly engineered electric heating solutions for demanding, mission-critical process control applications in energy, industrial and commercial market sectors.

The buyer was private equity firm Irving Place Capital. In connection with this transaction, the senior management team of Chromalox has increased its ownership in the company and will retain a substantial stake in the business going forward. Terms of the transaction were not disclosed.

In addition to the exit of Chromalox, Sentinel announced last week the acquisition of Hospice Advantage, a hospice organization that provides end-of-life care, palliative treatment, personal care and family support services, primarily to patients in their homes. Both transactions conclude a highly active 2012 that saw Sentinel successfully complete six exits and make four new platform investments. The six exits are Chromalox; Inscape Publishing, a provider of assessment and training products and services that develop interpersonal skills; Interim Healthcare, a franchisor of skilled home healthcare services; LTI Boyd, an industrial manufacturer of mission-critical sealing and energy management solutions; Massage Envy, a provider and franchisor of massage therapy and facial treatment services; and Southern California Pizza Company, a Pizza Hut franchisee in southern California.

The four new 2012 platform investments are Colson, a global industrial manufacturer of casters and wheels; Hospice Advantage; Huddle House, a franchisor of family dining restaurants in the Southeast; and Northeast Dental Management, a regional dental practice management company in the mid-Atlantic.