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Reference Manual
00809-0100-4690, Rev EA
March 2007
3-11
Rosemount 2088 and 2090
Rosemount 2090F The Rosemount 2090F sanitary pressure transmitter is designed to be
installed directly to a sanitary fitting. The transmitter is available with either a
1.5- or 2-inch clamp connection.
When installing the transmitter to the sanitary fitting it is important to use the
proper sanitary clamp and gasket (user-supplied). Check the clamp and
gasket specifications before installing. Refer to Standard Sanitary Clamp
Models in Figure 3-8 for a list of standard sanitary clamps, their respective
maximum pressure ranges, and the recommended torque to be applied when
mounting.
Figure 3-8. Rosemount 2090F Mounting Configuration Using a Sanitary Fitting.
ELECTRICAL
CONSIDERATIONS
The wiring terminations on the Rosemount 2088, 2090P, and 2090F are
located in the side of the transmitter housing marked “FIELD TERMINALS.”
Access to these terminations is required during installation and may be
necessary during periodic calibration of the transmitter.
Power Supply The dc power supply should provide power to the transmitter with less than
one percent ripple. The total loop resistance load is the sum of the resistance
of the signal wires and the resistance load of the controller, indicator, and
other pieces of equipment in the loop. Note that the resistance of intrinsic
safety barriers, if used, must be included. Figure 3-9 shows the transmitter
power supply load limitations.
Nameplate
1.5- or 2-in.
Tri-Clamp
Connection
1.1 (28)
Typical
User Supplied
Gasket and
Clamp
B
A
DETAIL OF SANITARY
CONNECTION
STANDARD SANITARY CLAMP MODELS
Clamp Model
psi @ 70 °F
(kPa @ 21 °C)
psi @ 250 °F
(kPa @ 121 °C)
Recommended
Torque
13 MHHM 1.5-inch
13 MHHM 2-inch
450 (3 103)
500 (3 448)
250 (1 724)
250 (1 724)
25 in-lb (2.8 N•m)
13 MHHS 1.5-inch
13 MHHS 2-inch
600 (4 138)
550 (3 793)
300 (2 069)
275 (1 896)
25 in-lb (2.8 N•m)
13 MHP 1.5-inch
13 MHP 2-inch
1500 (10 345)
1000 (6 896)
1200 (8 276)
800 (5 517)
20 ft-lb (27 N•m)
CONNECTION SIZE
* Dimensions are in inches (millimeters)
Connection
Size*
A B
1.50 (38) 1.99 (50) 1.71 (43)
2.00 (51) 2.52 (64) 2.22 (56)
Mounting
Hole