Update Rate - Emerson Rosemount 2051 Wireless Series Reference Manual

Appendix A: Reference Data
June 2012
Load Limitations
Maximum loop resistance is determined by the voltage level of the external power supply, as
described by:
Wireless Self-Organizing Networks
Output
WirelessHART, 2.4 GHz DSSS.
Local Display
The optional five-digit LCD can display user-selectable information such as primary variable in
engineering units, percent of range, sensor module temperature, and electronics temperature.
Display updates at up to once per minute.

Update Rate

User selectable, 1 sec. to 60 min.
Wireless Power Module
Field replaceable, keyed connection eliminates the risk of incorrect installation,
Intrinsically Safe Lithium-thionyl chloride Power Module (Green Power Module,
model number 701PGNKF) with polybutadine terephthalate (PBT) enclosure.
Ten-year life at one minute update rate.
(1) Reference conditions are 70 °F (21 °C), and routing data for three additional network devices.
NOTE: Continuous exposure to ambient temperature limits of
-40 °F or 185 °F (-40 °C or 85 °C) may reduce specified life by less than 20 percent.
Overpressure Limits
Transmitters withstand the following limits without damage:
76
Max. Loop Resistance = 43.5 (Power Supply Voltage – 10.5)
Voltage (V dc)
Communication requires a minimum
loop resistance of 250 ohms.
(1) For CSA approval, power supply must not exceed 42.4 V.
Operating
Region
(1)
Reference Manual
00809-0100-4102, Rev AA
Specifications and Reference Data