Emerson manual From draining into the transmitter housing, Mounting a 644H to a DIN Rail

Reference Manual

00809-0400-4728, Rev AA June 2011

Rosemount 644

MOUNTING	Mount the transmitter at a high point in the conduit run to prevent moisture
	from draining into the transmitter housing.

The 644 head mount installs:

•In a connection head or universal head mounted directly on a sensor assembly

•Apart from a sensor assembly using a universal head

•To a DIN rail using an optional mounting clip.

The 644 rail mount attaches directly to a wall or to a DIN rail.

Mounting a 644H to a DIN Rail

To attach a head mount transmitter to a DIN rail, assemble the appropriate rail mounting kit (part number 00644-5301-0010) to the transmitter as shown in Figure 2-2.

Figure 2-2. Assembling Rail Clip Hardware to a 644H

G-Rail (asymmetric)	Top Hat Rail (symmetric)
Mounting	Mounting
Hardware	Hardware
Transmitter	Transmitter

Rail Clip

Rail Clip

Note: Kit includes Mounting Hardware and both types of Rail Kits.

Figure 2-3. Assembling 644H for Use in an Existing L1 Connection Head

Retrofitting a 644H for Use in an Existing Threaded Sensor Connection Head

To mount a 644H in an existing threaded sensor connection head (former option code L1), order the 644H retrofit kit (part number 00644-5321-0010). The retrofit kit includes a new mounting bracket and all associated hardware necessary to facilitate the installation of the 644H in the existing head. See Figure 2-3.

Existing Threaded Sensor Connection Head

(Former option code L1)

Kit includes replacement bracket and screws.

2-3