Supply Connection; Output Connections - Emerson Fisher 3610J Instruction Manual

3610J and 3620J Positioners
September 2017
To complete the installation of a 3610J or 3620J positioner requires connecting tubing and fittings between the
positioner and the actuator. The fittings, tubing, and mounting parts required depend on the type number and
optional equipment: such as filter, regulator, and bypass valve. Positioner pressure connection locations are shown in
figure 8. All pressure connections to the 3610J and 3620J positioners are 1/4 NPT internal. Use 3/8‐inch tubing or
1/4‐inch pipe for all tubing connections. Refer to the Vent Connection section for remote vent connections.

Supply Connection

WARNING
Severe personal injury or property damage may occur from process instability if the instrument supply medium is not
clean, dry and oil‐free air, and noncorrosive gas. While use and regular maintenance of a filter that removes particles larger
than 40 micrometers in diameter will suffice in most applications, check with an Emerson Automation Solutions field office
and industry instrument air quality standards for use with corrosive gas or if you are unsure about the proper amount or
method of air filtration or filter maintenance.
WARNING
3620J, 3620JP, 3621JP positioners and the 3622 electro‐pneumatic converter do not meet third party approvals for use with
natural gas as the supply medium. Use of natural gas as the supply medium can result in personal injury or property
damage from fire or explosion.
Supply pressure must be clean, dry, and oil‐free air or noncorrosive gas. Use of a 67CFR filter regulator with standard 5
micrometer filter, or equivalent, to filter and regulate supply air should suffice in most applications. The 67CFR filter
regulator can be integrally mounted with the positioner. Use 3/8‐inch tubing or 1/4‐inch pipe for the supply line.
CAUTION
To avoid equipment damage caused by excessive pressure, do not exceed the maximum pressure rating of the actuator or
positioner. Refer to the appropriate instruction manual to determine the maximum pressure rating of the actuator, and to
table 1 for the maximum pressure rating of the positioner.
The supply pressure should be high enough to permit setting the regulator 0.3 bar (5 psi) above the upper limit of the
appropriate pressure range, for example: 1.4 bar (20 psig) for a 0.2 to 1.0 bar (3 to 15 psig) range. However, do not
exceed the maximum allowable supply pressure of 10.3 bar (150 psig) nor the pressure rating of any connected
equipment.

Output Connections

For the 3610J or 3620J positioner, the OUTPUT A connection must be plugged. Connect the OUTPUT B connection to
the actuator diaphragm casing connection. Figure 8 shows a positioner with a bypass valve. When the bypass valve is
used, connect the OUTPUT connection on the bypass valve to the diaphragm casing connection on the actuator. A
manifold in the bypass body adapter internally connects OUTPUT B to the bypass valve.
Use 3/8‐inch tubing between the actuator and the positioner.
For the 3610JP or 3620JP positioner, connect the OUTPUT A connection to the lower actuator cylinder connection and
the OUTPUT B connection to the upper actuator cylinder connection. Figure 1 shows the positioner connected to a
piston actuator. Use 3/8‐inch tubing between the actuator and positioner.
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Instruction Manual
D200149X012