7MF812.-.....-....

Input

Measured variable

Gauge pressure (flush-mounted)

HART

PROFIBUS PA/ FOUNDATION Fieldbus

Span (infinitely adjustable) or nominal measuring range and
max. permissible test pressure

Span

Nominal measuring range

Max. perm. operating pressure MAWP (PS)

Max. permissible test pressure

0.01 ... 1 bar
1 ... 100 kPa
0.15 ... 14.5 psi

1В bar
100 kPa
14.5В psi

4В bar
400 kPa
58В psi

6В bar
600 kPa
87В psi

0.04В ...В 4В bar
4 ... 400 kPa
0.58В ...В 58В psi

4В bar
400 kPa
58В psi

7В bar
0.71 MPa
102В psi

10В bar
1 MPa
145В psi

0.16В ...В 16В bar
16 ... 1600 kPa
2.3В ...В 232В psi

16В bar
1600 kPa
232В psi

21В bar
2.1 MPa
305В psi

32В bar
3.2 MPa
464В psi

Lower measuring limit
(for PMC Style Minibolt no span < 500 mbar adjustable)

100 mbar a/10 kPa a/1.45 psia

Upper measuring limit

100 % of max. span

Output

HART

PROFIBUS PA/ FOUNDATION Fieldbus

Output signal

4В ...В 20 mA

Digital PROFIBUS PA signal

• 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

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

-

• With HART

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

-

Physical bus

-

IEC 61158-2

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 (25В В°C (77В В°F))

Measuring span ratio r (spread, Turn-Down)

r = maximum measuring span/set measuring span or nominal measuring range

Error in measurement at limit setting including hysteresis and reproducibility

• Linear characteristic

• r ≤ 5

≤ 0.075 %

• 5В <В r ≤ 100

≤ (0.005 · r + 0.05) %

Effect of ambient temperature

≤ (0.08 · r + 0.16) %

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

≤ (0.25 · r) % in 5 years

Influence of mounting position

≤ 0.1 mbar/0.01 kPa/0.00145 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

Measured-value resolution for PROFIBUS PA and FOUNDATION Fieldbus

3В В·В 10^-5 of nominal measuring range

Rated conditions

Installation conditions

Ambient temperature

Observe the temperature class in areas subject to explosion hazard.

• Measuring cell with silicone oil

-40В ...В +85В В°C (-40В ...В +185В В°F)

• Display readable

-30В ...В +85В В°C (-22В ...В +185В В°F)

• Storage temperature

-50В ...В +85В В°C (-58В ...В +185В В°F)

Climatic class

Condensation

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

Degree of protection acc. to ENВ 60529

IP65, IP68, NEMA 4X, enclosure cleaning, resistant to lyes, steam to 150 В°C (302 В°F)

Electromagnetic compatibility

• Emitted interference and interference immunity

Acc. to EN 61326 and NAMUR NE 21

Process conditions

Temperature of medium

• Measuring cell with silicone oil

-40В ...В +100В В°C (-40В ...В +212В В°F)

Design

Weight (without options)

Approx. 1 kg (2.2 lb)

Enclosure material

Stainless steel, mat. no. 1.4301/304

Material of parts in contact with the medium

• Seal diaphragm

Hastelloy C276, mat. no. 2.4819

• Measuring cell filling

Silicone oil

Surface quality touched-by-media

R_a-values ≤ 0.8 µm (32 µ-inch)/welds Ra ≤ 1.6 µm (64 µ-inch)

Power supply U_H

HART

PROFIBUS PA/ FOUNDATION Fieldbus

Terminal voltage on transmitter

10.5 ... 42 V DC
for intrinsically safe operation:
10.5В ...В 30В V DC

-

Auxiliary power

-

Bus-powered

Separate supply voltage

-

Not necessary

Bus voltage

• Without EEx

-

9В ...В 32В V

• With intrinsically-safe operation

-

9 ... 24 V

Current consumption

• Max. basic current

-

12.5 mA

• Start-up current ≤ basic current

-

Yes

• Max. fault current in the event of a fault

-

15.5 mA

Fault disconnection electronics (FDE) available

-

Yes

Certificates and approvals

HART

PROFIBUS PA/ FOUNDATION Fieldbus

Classification according to pressure equipment directive (PEDВ 2014/68/EU)

For gases of fluid group 1 and liquids of fluid groupВ 1; complies with requirements of ArticleВ 4, ParagraphВ 3 (sound engineering practice)

Explosion protection

Intrinsic safety "i"

PTB 05 ATEX 2048

Marking

II 1/2 G Ex ia llC/llB T4/T5/T6 Ga/Gb

Permissible ambient temperature

• Temperature class T4

-40В ...В +85В В°C (-40В ...В +185В В°F)

• Temperature class T5

-40В ...В +70В В°C (-40В ...В +158В В°F)

• Temperature class T6

-40В ...В +60В В°C (-40В ...В +140В В°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 О©

To certified intrinsically-safe circuits with peak values:

FISCO supply unit:

U_i = 17.5В V, I_i = 380В mA,
P_i = 5.32В W

Linear barrier:

U_i = 24В V, I_i = 250В mA, P_i = 1.2В W

Effective internal capacitance

C_i = 6В nF

C_i = 1.1В nF

Effective internal inductance

L_i = 0.4В mH

L_i ≤ 7 μH

Explosion protection to FM for USA and Canada (cFM_US)

• Identification (DIP) or (IS); (NI)

Certificate of Compliance 3025099

CLВ I, DIVВ 1, GP ABCD T4 ... T6; CLВ II, DIVВ 1, GPВ EFG; CLВ III; CLВ I, ZNВ 0/1 AEx ia IIC T4 ... T6; CLВ I, DIVВ 2, GPВ ABCD T4 ... T6; CLВ II, DIVВ 2, GPВ FG; CLВ III

• Identification (DIP) or (IS)

Certificate of Compliance 3025099C

CLВ I, DIVВ 1, GP ABCD T4 ... T6; CLВ II, DIVВ 1, GPВ EFG; CLВ III; Ex ia IIC T4 ... T6; CLВ I, DIVВ 2, GPВ ABCD T4 ... T6; CLВ II, DIVВ 2, GPВ FG; CLВ III

HART

230В ...В 1100В О©

Protocol

HART Version 5.x

Software for computer

SIMATICВ PDM

Simultaneous communication with master class 2 (max.)

4

The address can be set using

Configuration tool

Local operation

(standard setting Address 126)

Cyclic data usage

• Output byte

One measured value: 5 byte

Two measured values: 10 byte

• Input byte

Register operating mode: 1 byte

Reset function due to metering: 1 byte

Device profile

PROFIBUS PA Profile for Process Control Devices Version 3.0, ClassВ B

Function blocks

2

• Analog input

• Adaptation to user-specific process variable

Linearly rising or falling characteristic

• Electrical damping

0 ... 100 s adjustable

• Simulation function

Input /Output

• Limit monitoring

One upper and lower warning limit and one alarm limit respectively

• Register (totalizer)

Can be reset and preset

Optional direction of counting

Simulation function of the register output

• Limit monitoring

One upper and lower warning limit and one alarm limit respectively

• Physical block

1

Transducer blocks

2

• Pressure transducer block

• Monitoring of sensor limits

Yes

• Specification of a container characteristic with

Max. 31 nodes

• Characteristic curve

Linear

• Simulation function

Available

• Transducer block "Electronic temperature"

Simulation function

Available

Function blocks

3 function blocks analog input, 1В function block PID

• Analog input

• Adaptation to user-specific process variable

Yes, linearly rising or falling characteristic

• Electrical damping adjustable

0 … 100 s

• Simulation function

Output/input (can be locked within the device with a bridge)

• Failure mode

parameterizable (last good value, substitute value, incorrect value)

• Limit monitoring

Yes, one upper and lower warning limit and one alarm limit respectively

• Square-rooted characteristic for flow measurement

Yes

• PID

Standard FOUNDATION Fieldbus function block

• Physical block

1 resource block

Transducer blocks

1 transducer block Pressure with calibration, 1 transducer block LCD

• Pressure transducer block

• Can be calibrated by applying two pressures

Yes

• Monitoring of sensor limits

Yes

• Simulation function: Measured pressure value, sensor temperature and electronics temperature

Constant value or by means of parameterizable ramp function