Siemens 7MF4633 - Models 7 MF4433 and 7 MF4533, Specifications

Model Designations and Specifications UMSITRPDS3-1
November 2010
9-22
TABLE 9-9 Models 7MF4433 and 7MF4533, Specifications
Input
Measured variable Differential pressure and flow
Span (infinitely adjustable) Span Max. permissible text pressure
1 to 20 mbar (0.4 to 8 inH
2
O) 32 bar a (464 psi)
1 to 60 mbar (0.4 to 24 inH
2
O) 160 bar a (2320 psi)
2.5 to 250 mbar (1 to 100 inH
2
O)
6 to 600 mbar (2.4 to 240 inH
2
O)
16 to 1600 mbar (6.4 to 642 inH
2
O)
50 to 5000 mbar (20 to 2000 inH
2
O)
0.3 to 30 bar (4.35 to 435 psi)
2.5 to 250 mbar (1 to 100 inH
2
O) 420 bar (6091 psi)
6 to 600 mbar (2.4 to 240 inH
2
O)
16 to 1600 mbar (6.4 to 642 inH
2
O)
50 to 5000 mbar (20 to 2000 inH
2
O)
0.3 to 30 bar (4.35 to 435 psi)
Lower measuring limit
• Measuring cell, silicone oil filling -100% of span; -33% with 30 bar (435 psi) measuring cell or 30 mbar a (0.44 psi)
Upper measuring limit 100% of maximum span (for oxygen version and inert filling liquid; max. 160 bar g
(2320 psi g))
Output
Output signal 4 to 20 mA
• Lower limit (infinitely adjustable) 3.55 mA, factory preset to 3.84 mA
• Upper limit (infinitely adjustable) 23 mA, factory preset to 20.5 mA or optionally set to 22.0 mA
Load
• Without HART communication R
B
≤ (U
H
– 10.5 V)/0.023 A; R
B
in Ω
U
H
: power supply in V
• With Hart communication R
B
= 230 to 500 Ω (SIMATIC PDM) or
R
B
= 230 to 1100 Ω (HART Communicator)
Accuracy
To EN 60770-1
Reference Conditions Increasing characteristic, start of scale value 0 bar, stainless steel seal diaphragm,
silicon oil filling, temperature 25°C (77°F) r: span ratio (r = max. span/set span)
Error in measurement and fixed-point
setting (including hysteresis and
repeatability)
• Linear characteristic
- r ≤ 10 ≤ (0.0029 * r + 0.071)%
- 10 < r ≤ 30 ≤ (0.0045 * r + 0.071)%
- 30 < r ≤ 100 ≤ (0.005 * r + 0.05)%
• Square-root characteristic (flow >
50%)
- r ≤ 10 ≤ 0.1%
- 10 < r ≤ 30 ≤ 0.2%
• Square-root characteristic (flow 25 to
50%)
- r ≤ 10 ≤ 0.2%
- 10 < r ≤ 30 ≤ 0.4%
Long-term drift (temperature change
+/-30°C (+/-54°F))
≤ (0.25 * r)% every 5 years
static pressure max. 70 bar g (1015 psi g)
• 20 mbar (0.29 psi)-measuring cell ≤ (0.2 * r) per year
Influence of ambient temperature
• at -10 to +60°C (14 to +140°F) ≤ (0.08 * r + 0.1)%
• at -40 to -10°C and +60 to +85°C (-40
to +14°F and 140 to +185°F)
≤ (0.1 * r + 0.15)%/10K (Twice the value
with 20-mbar (0.29 psi) measuring cell)