Rosemount Analytical 2081C two wire Max Transmitter

The Rosemount Analytical 2081C is a two-wire analytical transmitter designed to meet the demanding requirements of industrial process applications. It simplifies the measurement of various critical parameters in liquids and gases, making it invaluable in multiple industries such as petrochemical, water and wastewater, food and beverage, and pharmaceuticals. This transmitter is designed for ease of use, reliability, and precision. Its main purpose is to provide real-time analytical measurements to facilitate monitoring and control of various processes. One of the unique features of the 2081C is its ability to directly interface with a variety of analytical sensors, allowing it to measure parameters such as pH, conductivity, and dissolved oxygen with high accuracy. Additionally, the Rosemount 2081C has robust construction, which allows it to endure harsh environmental conditions typically found in industrial settings. Its two-wire system means that it can operate with minimal power requirements, making it an energy-efficient option for continuous monitoring applications.

Manufacturer: Rosemount Analytical Inc. Nameplate Address (as stamped): 240 BARRANCA PKWY, IRVINE, CA. 92714 (the former Uniloc / Rosemount Analytical liquid-analysis works; the Rosemount brand is now part of Emerson) Model (as stamped): 2081-C. The suffix character is partly worn on this unit and reads as 2081_C. Serial (as stamped): H9C-10145 NAMEPLATE DATA TRANSCRIBED FROM THIS UNIT Wiring Configuration: TWO WIRE Output Signal: OUTPUT 4-20 MA Supply: "SUPPLY 12.4 VDC MAX" as stamped Compartments: terminal side and circuit side marked separately on the housing Conformity Marking: CE Enclosure Warning (as stamped): "KEEP TIGHT WHEN IN CIRCUIT ALIVE IN EXPLOSIVE ATMOSPHERE" - indicating an explosion-protected housing intended to stay closed while energised in a classified area. PRODUCT FAMILY Rosemount Analytical published a combined instruction manual titled "Model 2081C/T Conductivity Microprocessor Transmitter", which places the 2081-C and 2081-T together as the conductivity members of the 2081 two-wire transmitter series. The series also included a 2081-pH. Across Rosemount's sibling 3081 and 5081 two-wire families the suffix -C denotes contacting conductivity and -T denotes toroidal (inductive) conductivity; on that naming convention this -C unit is the contacting-conductivity transmitter. This is stated as a family and naming inference, not as a figure taken from a 2081 datasheet. NOT PUBLISHED / NOT VERIFIABLE FOR THIS UNIT Emerson has withdrawn the Model 2081C/T manual from its document library (the document URL now redirects to a search page) and no manufacturer datasheet for the 2081 series could be retrieved from any source. The following are therefore NOT stated here, because no manufacturer figure could be obtained and none has been invented: conductivity measurement ranges, compatible sensor cell constants, accuracy and repeatability, temperature-compensation method, ambient and process temperature limits, enclosure NEMA / IP rating and housing material, hazardous-area approval agency, class, division and gas group, and maximum loop load resistance. These must be taken from the unit's own configuration and a factory manual before the transmitter is applied. Spec Basis: Nameplate transcription from this unit's own photographs (Rosemount Analytical, 2081-C, S/N H9C-10145, 240 Barranca Pkwy, Irvine CA 92714, TWO WIRE, OUTPUT 4-20 MA, CE). Model-family identification from the Emerson / Rosemount published manual title "Model 2081C/T Conductivity Microprocessor Transmitter" (Emerson document library; document since withdrawn). The -C / -T suffix convention corroborated by Emerson's Rosemount 3081-T Two-Wire Conductivity Transmitter manual and the 5081-C contacting / 5081-T toroidal conductivity transmitter manuals. No resale-listing or third-party figures have been used.