The Rosemount 648 Wireless Temperature Transmitter offers best-in-class wireless accuracy and stability for process monitoring. This durable transmitter is designed with a dual-compartment housing for field reliability. When combined with Rosemount X-well™ Technology and the Rosemount 0085 Pipe Clamp sensor, this transmitter can provide accurate measurement of process temperature via an in-transmitter thermal conductivity algorithm, eliminating the need for a thermowell or process penetration.
Temperature transmitters act as a medium between the sensor and a control system. Used in a variety of industries, they accept signals from all industry-standard resistance temperature detectors (RTD) and thermocouples, converting measurement input signals to a 4-20mA, HART, WirelessHART®, or FOUNDATION™ Fieldbus output signal. They can be calibrated to a desired temperature measurement range and configured to alert the control system if the process temperature falls outside of the specified range. Available in many housing styles and enclosures, these devices can be mounted with a sensor/thermowell assembly at the measurement point or mounted remotely.
Utilizing the Advanced Diagnostics Capabilities of Rosemount Temperature Transmitters enhances the quality and accuracy of your temperature measurements. Environmental and installation effects that can create erroneous measurement values can be compensated and filtered out by these diagnostic capabilities. Our diagnostics can also be used to alert you of a degraded sensor or installation condition prior to sensor failure. The measurement insights gained by using advanced diagnostics help to maintain process measurement uptime, allow for proactive maintenance, and ultimately, help avoid an unforeseen process shutdown.
Keep your processes running with Open Sensor Holdoff, a diagnostic that prevents false open sensor events from disrupting process control. High voltage transients, such as lightning and electrostatic discharge, can cause false open sensor alarms. With this diagnostic enabled, the transmitter waits for several updates to determine if an actual open sensor event has occurred before triggering an alarm.
Single sensor capability with universal sensor inputs (RTD, T/C, mV, ohms)
WirelessHART® protocol
Dual-compartment field mount
Large LCD display with percent range graph
Basic diagnostics including open/short sensor diagnostics
Transmitter-sensor matching (Callendar-Van Dusen constants)
Hazardous location, marine type, see full specs for complete list of certifications
1 sec. to 60 min., user selectable
Up to 10-year life, field replaceable (order separately)
External (standard and extended range)