Parr offers a variety of thermocouples for use in our reactors and pressure vessels. The standard thermocouple is a Type J (iron-constantan) which is compatible with the operating temperature range of these vessels.
The thermocouples are furnished with a sealed 1/8″ OD stainless steel sheath and include a standard plug connection at the end of the probe. Our standard thermocouples are manufactured in accordance with ASTM E230.
Alternate thermocouple materials including Alloys C276 and 600 are readily available. Platinum resistance elements (3-wire RTD) are available as special orders as well as multiple point thermocouples.
Most commonly, in small volume vessels the thermocouple probe is installed directly into the vessel with a compression fitting and in larger vessels the probe sits inside a thermowell. The thermowell arrangement offers protection to the thermocouple from physical damage. We also furnish thermowells in vessels manufactured in materials other than stainless steal so the thermowell will be the alternate alloy and the thermocouple probe can be stainless steel.
Additionally, dual element thermocouples with two separate thermocouples in a single sheath are furnished in smaller volume vessels for use with accessory temperature meters. We also offer spring loaded thermocouples which are designed to be installed through the heater wall to the outside wall of the pressure vessel.
An extension wire is furnished to connect the thermocouple to the control device. The standard length is 5 feet but longer lengths are available if the control is to be mounted away from the reactor.
|Type J Thermocouples with 1/8″ Diameter|
|Part Number||Stem Length, in||Sheath Material|
|A472E||7.5||T316 Stainless Steel|
|A472E2||9.5||T316 Stainless Steel|
|A472E3||11.5||T316 Stainless Steel|
|A472E6||15.5||T316 Stainless Steel|
|A472E5||21.5||T316 Stainless Steel|
|A472E4||5.5||T316 Stainless Steel|
|A472E8||2.5||T316 Stainless Steel|
|Most of the above listed thermocouples are also available as Type K (Chromel-Alumel) or Type T (Copper-Constantan).|
4878 Automated Liquid Sampler
Catalyst Addition Devices
Catalyst Loading Toolkit
Catalyst Testing System
Coned Pressure Fittings
Continuous Bulk-Solids Feeder
Equipment for Use in Potentially Ignitable Atmospheres
External Valves and Fittings
Gas Measurement Systems
--Intermediate Supply Tanks
--High Pressure Gas Burettes
Insulated Electrical Glands
Liquids Charging Systems
--Liquid Metering Pumps
--Liquid Charging Pipettes
Motors and Drives
Safety Rupture Discs
Sample Collection Vessel
Solids/Slurry Addition Devices
Spare Parts Kits
--Gas Entrainment Impellers
Valves and Fittings
--Bottom Drain Valves
--Manual Control Valves for Compressed Gas Tanks
--Pressure Relief Valves
--Safety Check Valves