Growing range of thermocouples, RTDs, and specialized sensor cabling
AutomationDirect’s line of ProSense process measurement devices now includes type J and type K thermocouples, more varieties of RTD sensors, and matching extension wire. Thermocouple probes with connection heads feature cast aluminum NEMA 4 screw covers with captive gasket and stainless steel chain. The 1/4 in. diameter probes are available with temperature sensing ranges of 32 to 1,330 °F (Type J), or 32 to 1,700 °F (Type K).
Thermocouple probes with connection heads feature cast aluminum NEMA 4 screw covers with captive gasket and stainless steel chain. The 1/4 in. diameter probes are available with temperature sensing ranges of 32 to 1,330 °F (Type J), or 32 to 1,700 °F (Type K). Welded-style probes, in 6, 12, and 18 in. lengths, are bendable to adapt to installation requirements; spring-loaded probes are available in 4, 6, or 12 in lengths.
Thermocouple welded and spring-loaded probes with 1/2 x 1/2 in. NPT hex nipples allow easy replacement of existing probes and easy connection to wiring junction boxes. Available in 6, 12, or 18 in. lengths, the 1/4 in. diameter welded style is bendable to adapt to installation requirements, while the spring-loaded style provides positive tip contact in thermowells.
Available thermocouple probes with pre-attached plugs feature 1/8 or 1/4 in. diameter sheaths in 6, 12, or 18 in. lengths; thermocouple probes with lead wire transition come with a 6 ft. heavy-duty lead wire. Temperature sensing ranges are 32 to 970 °F or 32 to 1,330 °F (Type J) and 32 to 1,700 °F (Type K).
Type J or K thermocouple adjustable immersion sensors, ideal for plastics processing applications, feature a 32 to 900 °F temperature range and 4, 6, or 10 ft. lead wires; the spring and armor adjustable styles allow for variable immersion depths.
Bolt-on ring sensors are ideal for nozzles, extruder barrels, die heads, molds, and other surface-mount sensing applications. Thermocouple bolt-on ring sensors cover a 32 to 900 °F temperature sensing range. RTD bolt-on ring sensors cover a -58 to 572 °F sensing range.
RTD probes feature 1/4 in. diameter stainless steel sheaths with 100 ohm platinum three-wire elements. With a temperature sensing range of -58 to 572 °F, the probes are available in 6, 12, or 18 in. lengths. Models available include welded and spring-loaded probes with cast aluminum NEMA 4 connection head and captive gasket, 3/4 in. NPT conduit opening and stainless steel cover chain; probes with 1/2 x 1/2 in. NPT hex nipples are available in welded and spring-loaded styles, allowing for easy replacement of existing probes and connection to wiring junction boxes. Also available are probes with pre-attached three-pin plugs for quick wiring connection, as well as probes with lead wire transition, or M12 connections.
ProSense RTD sanitary clean-in-place probes are designed to meet the stringent requirements of HTST pasteurization systems. These 4 in. probes are available in the standard 1/4 in. diameter, or with a 3/16 in. diameter reduced tip for greater durability in high-viscosity applications. The stainless steel probes have a -58 to 400 °F temperature sensing range.
Two-conductor thermocouple extension wire for types J and K, in standard ASTM/ANSI colors, is available in 50 and 100 ft. lengths. Also available is RTD extension wire which offers superior performance compared to generic off-the-shelf cable, in 50 and 100 ft. lengths.
Accessories for thermocouples and RTDs include thermowells, compression mounting fittings, bayonet adapters, and connectors.
Edited by Peter Welander, pwelander(at)cfemedia.com
Also read A Closer Look at RTDs.
Also read Understanding the Tricky Thermocouple.
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