Siemens 7MF4633 - Model 7 MF4233, Specifications

Model Designations and Specifications UMSITRPDS3-1
November 2010
9-10
TABLE 9-4 Model 7MF4233, Specifications
Input
Measured variable Absolute pressure (gage construction)
Span (infinitely adjustable) Span Max. permissible test pressure
8.3 to 250 mbar a (0.12 to 3.6 psi a) see Note 6 bar a (87 psi a)
43 to 1300 mbar a (0.62 to 18.9 psi a) 10 bar a (145 psi a)
160 to 5000 mbar a (2.32 to 72.5 psi a) 30 bar a (435 psi a)
1 to 30 bar a (14.5 to 435 psi a) 100 bar a (1450 psi a)
Lower measuring limit
• Measuring cell, silicone oil filling 0 mbar a (0 psi a)
Upper measuring limit 100% of maximum span
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 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 ≤ 0.1%
- 10 ≤ r < 30 ≤ 0.2%
Long-term drift (temperature change
+/-30°C (+/-54°F))
≤ (0.1 * r)%/year
Influence of ambient temperature
• at -10 to +60°C (14 to +140°F) ≤ (0.1 * r + 0.2)%
• 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
Rated operating conditions
Degree of protection (to EN 60529) IP65
Process temperature
• Measuring cell, silicon oil filling -40 to +100°C (-40 to +212°F)
• Measuring cell, inert filling liquid -20 to +100°C (-4 to +212°F)
• In conjunction with dust explosion
protection
-20 to +60°C (-4 to +140°F)
Ambient conditions
• Ambient temperature, digital indicators -30 to +85°C (-22 to +185°F)
• Storage temperature -50 to +85°C (-58 to +185°F)
• Climatic class, condensation Permissible
• Electromagnet compatibility To EN 61326 and NAMUR NE 21
Design
Weight, approximate, without options 1.5 kg (3.3 lb)
Housing material Low copper die-cast aluminum, GD-AISi 12 or stainless steel precision casing, mat.
No. 1.4408
Wetted parts materials
• Connection shank Stainless steel, mat. No. 1.4404/316L or Hastelloy C4, mat. No. 2.4610
• Oval flange Stainless steel, mat. No. 1.4404/316L
• Seal diaphragm Stainless steel, mat. No. 1.4404/316L or Hastelloy C276, mat. No. 2.4819