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Reference Manual
00809-0100-4808, Rev CA
June 2008
Rosemount 3051N
5-6
Span and Zero, Zero
Elevation, and
Suppression
Zero and span values can be set anywhere within the range limits stated in
Table 5-2 and Table 5-3, providing sensor limits are not exceeded.
Span must be greater than or equal to the minimum span stated in Table 5-2
and Table 5-3.
Humidity Limits 0-100% relative humidity
Volumetric Displacement Less than 0.005 in
3
(0,08 cm
3
)
Turn-on Time 2 seconds maximum
Response Time Dead Time (T
d
)
Maximum dead time before analog output reacts to step change in input =
0.1 seconds
Update Rate
20 times per second minimum
Minimum Time Constant (T
c
)
Adjustable Damping
Time constant on analog output is incrementally adjustable from the
minimum values stated above to 25.6 seconds nominal
Table 5-2. Rosemount 3051ND and 3051NG Range and Sensor Limits
Range
Minimum Span Range and Sensor Limits
Rosemount 3051ND, NG Upper (URL)
Lower (LRL)
Rosemount 3051ND Rosemount 3051NG
0 0.1 in H
2
0 (25 Pa) 3.0 in H
2
0 (750 Pa) -3.0 in H
2
0 (-750 Pa) NA
1 0.5 in H
2
0 (0,12 kPa) 25 in H
2
0 (6,22 kPa) -25 in H
2
0 (-6,22 kPa) NA
2 2.5 in H
2
0 (0,62 kPa) 250 in H
2
0 (62,2 kPa) -250 in H
2
0 (-62,2 kPa) -250 in H
2
0 (-62,2 kPa)
310 in H
2
0 (2,48 kPa) 1000 in H
2
0 (248 kPa) -1000 in H
2
0 (-248 kPa) 0.5 psia (3,5 kPa abs)
4 3 psi (20,7 kPa) 300 psi (2 070 kPa) -300 psi (-2 070 kPa) 0.5 psia (3,5 kPa abs)
5 20 psi (138 kPa) 2000 psi (13 800 kPa) -2000 psi (-13 800 kPa) 0.5 psia (3,5 kPa abs)
Table 5-3. Rosemount 3051NA Range and Sensor Limits
Range Minimum Span
Range and Sensor Limits
Upper (URL) Lower (LRL)
0 0.167 psia (8,6 mmHga) 5 psia (260 mmHga) 0 psia (0 mmHga)
1 0.3 psia (2,07 kPa abs) 30 psia (206,8 kPa abs) 0 psia (0 kPa abs)
2 1.5 psia (10,34 kPa abs) 150 psia (1 034,2 kPa abs) 0 psia (0 kPa abs)
3 8 psia (55,16 kPa abs) 800 psia (5 515,8 kPa abs) 0 psia (0 kPa abs)
4 40 psia (275,8 kPa abs) 4000 psia (27 580 kPa abs) 0 psia (0 kPa abs)
At 70 °F, with minimum damping setting
Range Code Minimum Time Constant (T
c
) Including Dead Time (T
d
)
0
≤ 1.0 seconds
1
≤ 0.5 seconds
2 - 5
≤ 0.2 seconds