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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

O) 32 bar a (464 psi)

1 to 60 mbar (0.4 to 24 inH

O) 160 bar a (2320 psi)

2.5 to 250 mbar (1 to 100 inH

6 to 600 mbar (2.4 to 240 inH

16 to 1600 mbar (6.4 to 642 inH

50 to 5000 mbar (20 to 2000 inH

0.3 to 30 bar (4.35 to 435 psi)

2.5 to 250 mbar (1 to 100 inH

O) 420 bar (6091 psi)

6 to 600 mbar (2.4 to 240 inH

16 to 1600 mbar (6.4 to 642 inH

50 to 5000 mbar (20 to 2000 inH

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

≤ (U

– 10.5 V)/0.023 A; R

in Ω

: power supply in V

• With Hart communication R

= 230 to 500 Ω (SIMATIC PDM) or

= 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)

1 2 ... 175 176 177 178 179 180 181 182 183 184 185 ... 221 222

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