Emerson Process Management 2051 General, Considerations, Mechanical, Environmental, Rosemount

Rosemount 2051

Reference Manual

00809-0200-4101, Rev AA July 2008

		Electrical shock can result in death or serious injury.
		• Avoid contact with the leads and terminals.
		Process leaks could result in death or serious injury.
		• Install and tighten all four flange bolts before applying pressure.
		• Do not attempt to loosen or remove flange bolts while the transmitter is
		in service.
		Replacement equipment or spare parts not approved by Emerson Process
		Management for use as spare parts could reduce the pressure retaining
		capabilities of the transmitter and may render the instrument dangerous.
		• Use only bolts supplied or sold by Emerson Process Management as spare
		parts.
		• Refer to page A-25 for a complete list of spare parts.
		Improper assembly of manifolds to traditional flange can damage sensor module.
		• For safe assembly of manifold to traditional flange, bolts must break back
		plane of flange web (i.e., bolt hole) but must not contact sensor module
		housing.
GENERAL
	Measurement accuracy depends upon proper installation of the transmitter
CONSIDERATIONS	and impulse piping. Mount the transmitter close to the process and use a
	minimum of piping to achieve best accuracy. Also, consider the need for easy
	access, personnel safety, practical field calibration, and a suitable transmitter
	environment. Install the transmitter to minimize vibration, shock, and
	temperature fluctuation.
	IMPORTANT
	Install the enclosed pipe plug (found in the box) in unused conduit opening
	with a minimum of five threads engaged to comply with explosion-proof
	requirements.
	For material compatibility considerations, see document number
	00816-0100-3045 on www.emersonprocess.com/rosemount.
MECHANICAL
	NOTE
CONSIDERATIONS	For steam service or for applications with process temperatures greater than
	the limits of the transmitter, do not blow down impulse piping through the
	transmitter. Flush lines with the blocking valves closed and refill lines with
	water before resuming measurement.
	NOTE
	When the transmitter is mounted on its side, position the Coplanar flange to
	ensure proper venting or draining. Mount the flange as shown in Figure 2-8 on
	page 2-16, keeping drain/vent connections on the bottom for gas service and
	on the top for liquid service.
ENVIRONMENTAL
	Best practice is to mount the transmitter in an environment that has minimal
CONSIDERATIONS	ambient temperature change. The transmitter electronics temperature
	operating limits are –40 to 185 °F (–40 to 85 °C). Refer to Appendix A:
	Reference Data that lists the sensing element operating limits. Mount the
	transmitter so that it is not susceptible to vibration and mechanical shock and
	does not have external contact with corrosive materials.

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