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Reference Manual
00809-0100-4727, Rev EA
October 2010
Rosemount 8700 Series
A-18
Weight
Aluminum remote junction box
Approximately 1 lb. (0.45 kg)
SST remote junction box
Approximately 2.5 lbs. (1.13 kg)
Process Wetted Materials (Sensor)
Liner
PFA with Ra < 32
in. (0.81
m)
Electrodes
316L SST with Ra < 15
in. (0.38
m)
Nickel Alloy 276 (UNS N10276) with Ra < 15
in. (0.38
m)
80% Platinum-20% Iridium with Ra < 15
in. (0.38
m)
Process Connections
The Rosemount 8721 Sanitary Sensor is designed using a standard IDF
fitting as the basis for providing a flexible, hygienic interface for a variety of
process connections. The Rosemount 8721 Sensor has the threaded or
“male” end of the IDF fitting on the ends of the base sensor. The sensor can
be directly connected with user supplied IDF fittings and gaskets. If other
process connections are needed, the IDF fittings and gaskets can be provided
and welded directly into the sanitary process tubing, or can be supplied with
adapters to standard Tri-Clamp
®
process connections. All connections are
PED compliant for group 2 fluids.
Tri-Clamp Sanitary Coupling
IDF Sanitary Coupling (screw type)
IDF specification per BS4825 part 4
Table 1. 8721 Sensor Weight
Line Size
Sensor Only
008721-0350 Tri-Clamp
fitting (each)
0.5
4.84 lbs (2.20 kg)
0.58 lbs (0.263 kg)
1.0
4.52 lbs (2.05 kg)
0.68 lbs (0.309 kg)
1.5
5.52 lbs (2.51 kg)
0.88 lbs (0.400 kg)
2.0
6.78 lbs (3.08 kg)
1.30 lbs (0.591 kg)
2.5
8.79 lbs (4.00 kg)
1.66 lbs (0.727 kg)
3.0
13.26 lbs (6.03 kg)
2.22 lbs (1.01 kg)
4.0
21.04 lbs (9.56 kg)
3.28 lbs (1.49 kg)
Aotewell Ltd
www.aotewell.com
Industry Automation
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+86-755-8660-6182