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

HART

PROFIBUS PA and FOUNDATION Fieldbus

Input

Measured variable

Gauge pressure (flush-mounted)

Spans (infinitely adjustable) or
nominal measuring range and
max. pemissible test pressure

Span (min. ... max.)

Max. perm. test pressure

Nominal measuring range

Max. perm. test pressure

0.01 ... 1 bar g
(0.15 ... 14.5 psi g)

6 bar g
(87 psi g)

1 bar g
(14.5 psi g)

6 bar g
(87 psi g)

0.04 ... 4 bar g
(0.58 ... 58 psi g)

10 bar g
(145 psi g)

4 bar g
(58 psi g)

10 bar g
(145 psi g)

0.16 ... 16 bar g
(2.3 ... 232 psi g)

32 bar g
(464 psi g)

16 bar g
(232 psi g)

32 bar g
(464 psi g)

Depending on the process connection, the span may differ from these values

Depending on the process connection, the nominal measuring range may differ from these values

Lower measuring limit

• Measuring cell with silicone oil

-100 mbar (1.45 psi)

Upper measuring limit

• Measuring cell with silicone oil

100% of max. span

100 % of the max. nominal measuring range

Output

Output signal

4 ... 20 mA

Digital PROFIBUS PA signal

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 T₆₃(step width 0.1 s)

Set to 0.1 s (0 ... 100 s)

Measuring accuracy

According to IEC 60770-1

Reference conditions (All error data always refer to the set span)

Rising characteristic curve, start-of-scale value 0 bar, stainless steel seal diaphragm, measuring cell with silicone oil, room temperature 25 °C (77 °F), span ratio (r = max. span / set span)

Error in measurement at limit setting incl. hysteresis and reproducibility

Linear characteristic

0,075 %

• r 10

(0.0029 · r + 0.071) %

• 10 < r 30

(0.0045 · r + 0.071) %

• 30 < r 100

(0.005 · r + 0.05) %

Step response time T₆₃

approx. 0.2 NO

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

(0.25 · r) %/5 years

0.25 %/5 years

Influence of ambient temperature

• at -10 ... +60 °C (14 ... 140 °F)

(0.1 · r + 0.2) %¹⁾

0,3 %

• at -40 ... -10 °C and +60 ... +85 °C
  (-40 ... 14 °F and 140 ... 185 °F)

(0.1 · r + 0.15) %/10 K

0.25 %/10 K

Influence of the medium temperature (only with flush-mounted diaphragm)

• Temperature difference between medium temperature and ambient temperature

3 mbar/10 K (1.2 inH₂O/10 K)

Rated conditions

Installation conditions

Ambient temperature

Observe the temperature class in areas subject to explosion hazard.

• Measuring cell with silicone oil

-40 ... +85 °C (-40 ... +185 °F)

• Display readable

-30 ... +85 °C (-22 ... +185 °F)

• Storage temperature

-50 ... +85 °C (-58 ... +185 °F)

Climatic class

Condensation

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

Degree of protection acc. to EN 60529

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

Electromagnetic Compatibility

• Emitted interference and interference immunity

Acc. to EN 61326 and NAMUR NE 21

Medium conditions

Temperature of medium

• Measuring cell with silicone oil

-40 ... +100 °C (-40 ... +212 °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

Terminal voltage on transmitter

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

Supplied through bus

Separate power supply

-

Not necessary

Bus voltage

• Without EEx

-

9 ... 32 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

Certificates and approvals

Classification according to PED 97/23/EC

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

Explosion protection

Intrinsic safety "i"

PTB 05 ATEX 2048

Marking

Ex II 1/2 G EEx ia/ib IIB/IIC T4, T5, T6

Permissible ambient temperature

• Temperature class T4

-40 ... +85 °C (-40 ... +185 °F)

• Temperature class T5

-40 ... +70 °C (-40 ... +158 °F)

• Temperature class T6

-40 ... +60 °C (-40 ... +140 °F)

Connection

To certified intrinsically-safe circuits with peak values:

U_i = 30 V, I_i = 100 mA,
P_i = 750 mW, R_i = 300

To certified intrinsically-safe circuits with peak values:

FISCO supply unit:

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

Linear barrier:

U_i = 24 V, I_i = 250 mA, P_i = 1.2 W

Effective inner capacitance

C_i = 6 nF

C_i = 1.1 nF

Effective internal inductance

L_i = 0.4 mH

L_i 7 H

Explosion protection to FM for USA and Canada (cFM_US)

• Identification (DIP) or (IS); (NI)

Certificate of Compliance 3025099

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

• Identification (DIP) or (IS)

Certificate of Compliance 3025099C

CL I, DIV 1, GP ABCD T4 ... T6; CL II, DIV 1, GP EFG; CL III; Ex ia IIC 4 ... T6; CL I, DIV 2, GP ABCD T4 ... T6; CL II, DIV 2, GP FG; CL III

HART

230 ... 1100 

Protocol

HART Version 5.x

Software for computer

SIMATIC 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, Class B

Function blocks

2

• Analog input

• Adaptation to customer-specific process variables

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, 1 function block PID

• Analog input

• Adaptation to customer-specific process variables

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 over parameterizable ramp function