Emerson Fisher 3710, Instruction Manual

Page: 48 / 56

Instruction Manual
D101728X012
3710 and 3720 Positioners
September 2017
48
Key Description Part Number
38 Feedback shaft (cam shaft)
39
(1)
Washer (metric)
For feedback shaft (cam shaft) (key 38)
40
(1)
Retaining ring (e‐clip) (metric)
for feedback shaft
(cam shaft) (key 38)
41 Vent screen
Note
To attach a gauge or tire valve to the positioner or converter, use a pipe
nipple (key 68) and a street tee (key 56).
53* Supply gauge, plastic case,
W/chrome‐plated brass connection
(requires street tee, key 56)
0 to 30 psig/0 to 0.2 MPa/0 to 2 bar
11B4040X012
0 to 60 psig/0 to 0.4 MPa/0 to 4 bar 11B4040X022
0 to 160 psig/0 to 1.1 MPa/0 to 11 bar 11B4040X032
54* Instrument gauge, plastic case,
W/chrome‐plated brass connection
(requires street tee, key 56)
0 to 30 psig/0 to 0.2 MPa/0 to 2 bar
11B4040X012
0 to 60 psig/0 to 0.4 MPa/0 to 4 bar 11B4040X022
55* Output gauge, plastic case w/chrome‐plated brass connection
(requires street tee, key 56)
0 to 30 psig/0 to 0.2 MPa/0 to 2 bar
11B4040X012
0 to 60 psig/0 to 0.4 MPa/0 to 4 bar 11B4040X022
0 to 160 psig/0 to 1.1 MPa/0 to 11 bar
(single or double action)
11B4040X032
56 Street tee, qty 1, required to attach each
gauge or tire valve to pipe bushing (key 68)
57 Pipe plug, for single‐acting positioners only
62 Tire valve
Single action (1 req'd) or Double action (2 req'd)
63 Lubricant, silicone sealant, (not furnished with positioner)
64 Anti‐seize sealant (not furnished with positioner)
65 Lubricant, 20W/50 Motor Oil or equivalent
(not furnished with positioner)
66 PTFE Petroleum based lubricant
(not furnished with positioner)
Key Description
68 Pipe bushing, qty 1, required to attach each
pipe tee (key 56) to positioner connection
69 Spacer, installed between the feedback
shaft (key 38) and the positioner base plate
70
(1)
Screw (metric), slot‐head/cross‐recessed
Used to secure key 18, supply cover, to key 16,
base ass'y (2 req'd)
Diagnostic Connections
(refer to figure 16)
FlowScanner valve diagnostics system hook‐up
Includes pipe tee, pipe nipple, pipe bushings, connector body, and body
protector. If ordered for units with gauges, a stem is also included.
For 3710 Positioner
Single‐acting units
For units w/gauges
For units w/o gauges
Double‐acting units
For units w/gauges
For units w/o gauges
For 3720 Positioner
Single‐acting units
For units w/gauges
For units w/o gauges
Double‐acting units
For units w/gauges
For units w/o gauges
*Recommended spare parts
1. Also recommended as a spare if metric
fasteners are not available at the installation site.