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 in3 (0,08 cm3)
Turn-on Time 2 seconds maximum
Response Time Dead Time (Td)
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 (Tc)
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 H20 (25 Pa) 3.0 in H20 (750 Pa) -3.0 in H20 (-750 Pa) NA
1 0.5 in H20 (0,12 kPa) 25 in H20 (6,22 kPa) -25 in H20 (-6,22 kPa) NA
2 2.5 in H20 (0,62 kPa) 250 in H20 (62,2 kPa) -250 in H20 (-62,2 kPa) -250 in H20 (-62,2 kPa)
310 in H
20 (2,48 kPa) 1000 in H20 (248 kPa) -1000 in H20 (-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 (Tc) Including Dead Time (Td)
0≤ 1.0 seconds
1≤ 0.5 seconds
2 - 5 ≤ 0.2 seconds