CALL A.WIHARTA 081294124885 085778084789 087784022201 The KEY® is a thermometer with an interchangeable probe for quick spot measurements. With a response time of less than 20 seconds in water, KEY® is ideal for quality control and industrial temperature monitoring. Five interchangeable temperature probes are available to meet specific requirements. Each probe is constructed out of rugged AISI 316 stainless steel, which resists the harmful effects of chemicals and humidity. In the HVAC field, gas and air can be monitored with the HI 98517-11 probe. The HI 98517-13 probe is for penetration and is included with the meter. It also provides a fast response typical of a thermocouple probe. HI 98517-15 and HI 98517-30 probes are for general liquid monitoring. The HI 98517-12 being a surface probe is made for machine shops, molding facilities and welding surfaces.