7MF4997-1AC

Input

Measured variable

Differential pressure and flow

Span (fully adjustable), maximum operating pressure (pursuant to 97/23/EC Pressure Equipment Directive)

Span

Max. perm. operating pressure MAWP (PS)

1 ... 60 mbar
0.1 ... 6 kPa
0.4 ... 24 inH₂O

160 bar
16 MPa
2320 psi

2.5 ... 250 mbar
0.2 ... 25 kPa
1 ... 100 inH₂O

6 ... 600 mbar
0.6 ... 60 kPa
2.4 ... 240 inH₂O

16 ... 1600 mbar
1.6 .... 160 kPa
6.4 ... 642 inH₂O

50 ... 5000 mbar
5 ... 500 kPa
20 ... 2000 inH₂O

0.3 ... 30 bar
0.03 ... 3 MPa
4.35 ... 435 psi

Low measuring limit

• Measuring cell with silicone oil filling

-100% of max. measuring range (-33 % for 30 bar /3 MPa /435 psi measuring cell) or 30 mbar a /3 kPa a /0.44 psi a

Upper measuring limit

100% of maximum span

Start of scale

Between the measuring limits (continuously adjustable)

Output

Output signal

4 ... 20 mA

• Lower limit (fully adjustable)

3.55 mA, factory preset to 3.84 mA

• Upper limit (fully adjustable)

23 mA, factory preset to 20.5 mA or optionally set to 22.0 mA

Load

• Without HART

R_B ? (U_H - 10.5 V)/0.023 A in ?,
U_H: Power supply in V

• With HART

R_B = 230 ... 500 ? (SIMATIC PDM) or
R_B = 230 ... 1100 ? (HART Communicator)

Protection against polarity reversal

Protected against short-circuit and polarity reversal. Each connection against the other with max. supply voltage.

Electrical damping (step width 0.1 s)

Set to 2 s (0 ... 100 s)

Measuring accuracy

According to IEC 60770-1

Reference conditions

• Rising characteristic curve
• Start of scale 0 bar
• Seal diaphragm stainless steel
• Silicone oil filling
• Room temperature 25 °C (77 °F)

Measuring span ratio r (spread, Turn-Down)

r = maximum measuring span/set measuring span

Error in measurement at limit setting including hysteresis and reproducibility

• Linear characteristic

• r ? 5

? 0.075 %

• 5 < r ? 10

? (0.005 · r + 0.07) %

• Square-rooted characteristic (flow > 50 %)

• r ? 5

? 0.075 %

• 5 < r ? 10

? (0.005 · r + 0.07) %

• Square-rooted characteristic (flow 25 ... 50%)

• r ? 5

? 0.15 %

• 5 < r ? 10

? (0.01 · r + 0.14) %

Influence of ambient temperature (in percent per 28 °C (50 °F))

• at -40 ... +85 °C (-40 ... +185 °F)

? (0.15 · r + 0.25) %

Effect of static pressure

• on the start of scale

• 60 mbar/6 kPa/0.87 psi
  250 mbar/25 kPa/3.63 psi
  600 mbar/60 kPa/8.7 psi
  1600 mbar/160 MPa/23.21 psi

? (0.15 · r) % per 70 bar/7 MPa/1015 psi
(zero-point correction is possible with position error adjustment)

• 5 bar/500 kpa/72.5 psi
  30 bar/3 MPa/435 psi

? (0.2 · r) % per 70 bar/7 MPa/1015 psi
(zero-point correction is possible with position error adjustment)

• on the span

? 0.14 % per 70 bar/7 MPa/1015 psi

Long-term stability (temperature change ±30 °C (±54 °F))

? (0.25 · r) % in 5 years, static pressure max. 70 bar/7 MPa/1015 psi

Effect of mounting position (in pressure per change of angle)

? 0.7 mbar/0.07 kPa/0.001015 psi per 10° incline (zero point correction is possible with position error compensation)

Effect of auxiliary power (in percent per voltage change)

0.005 % per 1 V

Rated conditions

Degree of protection acc. to IEC 60529

IP66 (optional IP66/IP68), NEMA 4X

Process temperature

• Measuring cell with silicone oil filling

-40 ... +100 °C (-40 ... +212 °F); -20 ... +100 °C (-4 ... +212 °F) with 30 bar measuring cell

• In conjunction with dust explosion protection

-20 ... +60 °C (-4 ... +140 °F)

Ambient conditions

• ambient temperature

• Transmitter (with 4-wire connection, observe temperature values of supplementary 4-wire electronics)

-40 ... +85 °C (-40 ... +185 °F)

• Display readable

-30 ... +85 °C (-22 ... +185 °F)

• Storage temperature

-50 ... +85 °C (-58 ... +185 °F)

• Climate class

• Condensation

Relative humidity 0 ... 100 %
Condensation permissible, suitable for use in the tropics

• Electromagnetic compatibility

• Emitted interference and interference immunity

According to IEC 61326 and NAMUR NE 21

Design

Weight (without options)

Die-cast aluminum: ? 4.5 kg (? 9.9 lb)
Stainless steel precision casting: ? 7.1 kg (? 15.6 lb)

Enclosure material

Low-copper die-cast aluminum, GD-AlSi 12 or stainless steel precision casting, mat. no. 1.4408

Wetted parts materials

• Seal diaphragm

Stainless steel, mat. no. 1.4404/316L or Hastelloy C276, mat. no. 2.4819

• Process flanges and sealing screw

Stainless steel, mat. no. 1.4408, Hastelloy C4, mat. no. 2.4610

• O-ring

FPM (Viton) or optionally: PTFE, FEP, FEPM and NBR

Measuring cell filling

Silicone oil

Process connection

Female thread ?-18 NPT and flange connection with mounting thread M10 to DIN 19213 or ⁷/₁₆-20 UNF to IEC 61518

Material of mounting bracket

• Steel

Sheet-steel, mat. no. 1.0330, chrome-plated

• Stainless steel

Sheet stainless steel, mat. no. 1.4301 (SS 304)

Power supply U_H

Terminal voltage on transmitter

10.5 ... 45 V DC
10.5 ... 30 V DC in intrinsically-safe mode

Certificates and approvals

Classification according to Pressure Equipment Directive (PED 97/23/EC)

PN 32/160 (MAWP 464/2320 psi)

For gases of fluid group 1 and liquids of fluid group 1; complies with requirements of article 3, paragraph 3 (sound engineering practice)

PN 420 (MAWP 6092 psi)

For gases of fluid group 1 and liquids of fluid group 1; complies with basic safety requirements of Article 3, paragraph 1 (appendix 1); assigned to category III, conformity evaluation module H by the TUV Nord.

Explosion protection

• Intrinsic safety "i"

PTB 13 ATEX 2007 X

• Marking

Ex II 1/2 G Ex ia/ib IIC T4/T5/T6 Ga/Gb

• Permissible ambient temperature

-40 ... +85 °C (-40 ... +185 °F) temperature class T4;
-40 ... +70 °C (-40 ... +158 °F) temperature class T5;
-40 ... +60 °C (-40 ... +140 °F) temperature class T6

• Wiring

To certified intrinsically-safe circuits with peak values:
U_i = 30 V, I_i = 100 mA, P_i = 750 mW; R_i = 300 ?

• Effective internal inductance/capacitance

L_i = 0.4 mH, C_i = 6 nF

• Flameproof enclosure "d"

PTB 99 ATEX 1160

• Marking

Ex II 1/2 G Ex d IIC T4/T6 Gb

• Permissible ambient temperature

-40 ... +85 °C (-40 ... +185 °F) temperature class T4;
-40 ... +60 °C (-40 ... +140 °F) temperature class T6

• Wiring

To circuits with operating values: U_H = 10.5 ... 45 V DC

• Dust explosion protection for zone 20

PTB 01 ATEX 2055

• Marking

Ex II 1 D Ex ta IIIC T120 °C Da
Ex II 1/2 D Ex ta/tb IIIC T120 °C Da/Db

• Perm. ambient temperature

-40 ... +85 °C (-40 ... +185 °F)

• Max. surface temperature

120 °C (248 °F)

• Wiring

To certified intrinsically-safe circuits with peak values:
U_i = 30 V, I_i = 100 mA, P_i = 750 mW, R_i = 300 ?

• Effective internal inductance/capacitance

L_i = 0.4 mH, C_i = 6 nF

• Dust explosion protection for zone 21/22

PTB 01 ATEX 2055

• Marking

Ex II 2 D Ex tb IIIC T120 °C Db

• Wiring

To circuits with operating values: U_H = 10.5 ... 45 V DC; P_max = 1.2 W

• Type of protection "n" (zone 2)

PTB 13 ATEX 2007 X

• Marking

Ex II 2/3 G Ex nA IIC T4/T5/T6 Gc
Ex II 2/3 G Ex ic IIC T4/T5/T6 Gc

• Connection (Ex nA)

U_m = 45 V

• Connection (Ex ic)

To circuits with operating values:
U_i = 45 V

• Effective internal inductance/capacitance

L_i = 0.4 mH, C_i = 6 nF

• Explosion protection to FM

Certificate of Compliance 3008490

• Designation (XP/DIP) or (IS); (NI)

CL I, DIV 1, GP ABCD T4...T6; CL II, DIV 1, GP EFG; CL III; CL I, ZN 0/1 AEx ia IIC T4...T6; CL I, DIV 2, GP ABCD T4...T6; CL II, DIV 2, GP FG; CL III

• Explosion protection to CSA

Certificate of Compliance 1153651

• Marking (XP/DIP) or (IS)

CL I, DIV 1, GP ABCD T4...T6; CL II, DIV 1, GP EFG; CL III; Ex ia IIC T4...T6; CL I, DIV 2, GP ABCD T4...T6; CL II, DIV 2, GP FG; CL III

Communication

HART

230 ... 1100 ?

Protocol

HART Version 5.x

Software for computer

SIMATIC PDM