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MDM3051S-DAP  Intelligent Pressure Transmitter
MDM3051S-DAP Intelligent Pressure Transmitter

Measured media: gas, steam, liquid
Measured range(with no shift): 0Pa~600Pa…40MPa
Basic error: ±0.075%
Diaphragm contacting with liquid: Stainless Steel 316L, Hast-alloy

Brief Introduction

Bracket Installation Absolute Pressure Transmitter (DAP)

Measured media: gas, steam, liquid

Measured range(with no shift): 0Pa~600Pa…40MPa

Basic error: ±0.075%

Diaphragm contacting with liquid: Stainless Steel 316L, Hast-alloy


Working Principle

 

Chart 1 Differential Pressure Transmitter

Differential pressure transmitter includes two functional units:

※ Main unit

※ Auxiliary unit

Main unit includes sensor and process connection, working principle as followed:

The sensor module uses whole welded technology, in which has a compact overload diaphragm, a differential pressure sensor and a temperature sensor. The temperature is taken as a reference for temperature compensation. The positive end of the differential pressure sensor is connected with high pressure chamber of sensor capsule; the negative end is connected with low pressure chamber of sensor capsule. Through the isolated diaphragm and filling liquid, the differential pressure is transmitted to silicon die in the inner of differential pressure sensor, which makes the resistor of sensor die change. So the detection system outputs different voltage. The output voltage is in proportion to the pressure variation, and then it is transmitted to standard output by adapter and amplifier.


MDM3051S-DAP Bracket Installation Absolute Pressure Transmitter

MDM3051S series Bracket Installation Gauge/Absolute Pressure Transmitter is used for level, density and pressure measurement of liquid, gas and steam. Then it will outputs 4mA~20mA DC HART signal and also it could be connected to RST375 hand communicator or RSM100Modem to do the specification setting and process control.


Standard Specification

(Standard zero as the reference calibration range, Stainless steel 316L diaphragm, filling liquid is silicone oil)


1 Performance Specification

Reference Basic error for range calibration

Reference Basic error for range calibration(including linearity, hystersis and repeatability from zero): ± 0.075%

If TD>10 (TD=Max. Pressure range/calibration range), the Basic error is ±(0.0075×TD)%

Environmental Temperature Effect

Range Code

-20℃~65℃ Total effect value

1B/1L

±(0.30×TD+0.20)%×Span

other

±(0.20×TD+0.10)%×Span

Range Code

-40℃~-20℃和65℃~85℃ Total effect value

1B/1L

±(0.30×TD+0.20)%×Span

other

±(0.20×TD+0.10)%×Span

Over range effect: ±0.075%×Span

Long-term stability

Range Code

Effect value

1B/1L

±0.2%×Span/1 year

other

±0.1%×Span/1 year

Power effect

±0.001% /10V (12V~42V DC), negligible.


2  Functional Specification

Pressure range and limits(MDM3051S-DAP Absolute Pressure Transmitter)

range/limits

kPa

bar

1L

range

2~40

0.02~0.4

limits

0~40

0~0.4

1M

range

2.5~250

0.025~0.25

limits

0~250

0~0.25

1O

range

30~3000

0.3~30

limits

0~3000

0~30

Pressure range limit

The pressure is adjustable within the upper and lower limit.

It is recommended to choose the range code with the lowest pressure range proportion to optimize the performance specification.

Zero setting

The zero and pressure range could be adjust to any value within the measured rang in the table, only the calibrated range≥Min. Range is valid.

Mounting position effect

The change of mounting position parallel to diaphragm could not influence the zero drift. If the angle between mounting position and diaphragm is over 90° , the zero drift is <0.4kPa which could be calibrated by zero setting. No effect on pressure range.

Output

2- wire, 4mA~20mA DC, HART communication protocol, linearity or square root output optional.

Output signal limit: Imin=3.9mA,Imax=20.5mA

Response time

The damping constant of amplifier parts is 0.1s, time constant of sensor is 0.1s~1.6s, which is depended on the pressure range and pressure range proportion. The additional adjustable time constant is 0.1s~60s.

Warm-up time

< 15s

Environmental temperature

-40℃~85℃

With LCD display and viton sealing ring, the temperature is -20℃~65℃.

Storage temperature/ transportation temperature

-50℃~85℃;with LCD display:-40℃~85℃

Pressure limit

It is from vacuum to Max. Pressure range.

Overpressure Limit

Pressure range

6kPa

40kPa

250kPa

(1B)

(1C/1L)

(1D/1M)

Overpressure limit

16MPa

16MPa

16MPa

Pressure range

3MPa

10MPa

21MPa

40MPa

(1F/1O)

(1G)

(1H)

(1I)

Overpressure limit

16MPa

20MPa

25MPa

45MPa

EMC

Please refer to next page “EMC table”


3 Installation

Power and load condition

Power supply: 24V DC, R≤(Us-12V)/Imax (kΩ)

Imax=23mA

Max. Voltage supply: 42V DC

Min. Voltage supply: 12V DC, 15V DC(Backlit LCD display)

Digital communication load resistance range: 230Ω~600Ω

Electric Connection

M20×1.5 cable sealing buckle, terminals are suitable for (0.5~2.5)mm2 wire.

Process connection

NPT 1/4 and UNF 7/16″ female at both sides of process connection flange.


4 Physical Specification

Material

Diaphragm: Stainless Steel 316L, Hast-alloy C

Process Connection: Stainless steel 304

Filling liquid: silicone oil

Transmitter housing: Aluminum alloy material, epoxy resin glue sprays on the surface

Housing sealing ring: NBR

Nameplate: Stainless steel 304

Weight

3.3kg(not including LCD display, mounting support and process connection)

Housing protection

IP67

EMC Table

code

Test terms

Standard

Test condition

Performance degree

1

Radiated interference(housing)

GB/T 9254-2008 table5

30MHz~1000MHz

qualified

2

Transmission interference

(DC power port)

GB/T 9254-2008 table1

0.15MHz~30MHz

qualified

3

ESD immunity

GB/T 17626.2-2006

4kV(contact); 8kV(air)

B

4

Radio frequency electromagnetic field immunity

GB/T 17626.3-2006

10V/m

(80MHz~1GHz)

A

5

Power frequency magnetic field immunity

GB/T 17626.8-2006

30A/m

A

6

EFT immunity

GB/T 17626.4-2008

2kV(5/50ns,5kHz)

B

Note: 

(1) A degree: performance is normal within the technical standard range during testing.

(2) B degree: During testing, the function or performance is lowered or lost temporarily, but it could be recovered by itself. Actual operation state, storage and data will keep the same.



Outline Construction:(Unit:mm)

outline dimension of 3051s differential pressure transmitter

Horizontal Piping Installation (side view)       Horizontal Piping Installation (front view)


outline dimension of 3051s differential pressure transmitter

Wall Installation                                                             Vertical Piping Installation


Electric Connection:

electric connection of 3051s differential pressure transmitter


Process connection instruction

process connection of 3051s differential pressure transmitter
process connection of 3051s differential pressure transmitter

Model and Specification Code Table

MDM3051S-DGP/

MDM3051S-DAP

Bracket Installation Intelligent Pressure Transmitter

Bracket Installation Intelligent Absolute Pressure Transmitter

 

 

Code

Output

H

4mA~20mA DC with HART

 

 

Code

Pressure Range

1B

0-0.6kPa~6kPa(0-60~600 mmH2O)/(0-6~60mbar)

Garge

1C

0-2kPa~40kPa /(0-200~4000 mmH2O)/(0-20~400mbar)

1D

0-2.5kPa~250kPa /(0-0.25~25 mH2O)/(0-25~2500mbar)

1F

0-30kPa~3MPa /(0-3~300 mH2O)/(0-0.3~30bar)

1G

0-0.1MPa~10MPa /(0-1~100bar)

1H

0-0.21MPa~21MPa /(0-2.1~210 bar)

1I

0-0.4MPa~40MPa /(0-4~400 bar)

1L

0-2kPa~40kPa /(0-200~4000 mmH2O)/(0-20~400mbar)

Absolute

1M

0-2.5kPa~250kPa /(0-25~2500mbar)

1O

0-30kPa~3MPa /(0-0.3~30bar)

 

 

Code

Diaphragm material Filling

A

Stainless steel316L silicone oil

C

Hastelloy C silicone oil

 

 

Code

Process connection

N

1/4 NPT and 7/16 UNF thread hole without release valve

B

1/4 NPT and 7/16 UNF thread hole, release valve mounting in the end-face of flange back

U

1/4 NPT and 7/16 UNF thread hole, release valve mounting in upper flange side

D

1/4 NPT and 7/16 UNF thread hole, release valve mounting in lower flange side

 

 

 

Code

Additional function

 

 

 

N

None

O

No oil processing(For oxygen measurement: fluorocarbon oil filling, viton sealing ring ,<6MPa,<60℃)

 

 

Code

Mounting bracket

N

None

1

Stainless steel

2

Galvanized Carbon Steel

 

 

Code

Display

N

None

1

LCD with back-light

 

 

Code

Process connection parts

N

None

1

1/2 NPT Female with stainless steel oval flange

2

M20×1.5 male with stainless steel T joint

3

1/2-14NPT guiding pressure transition joint and rear welding guiding pressure tube (SS)

 

 

Code

Others

N

None

A

Intrinsic safe

D

Exd version with Explosion-proof cable joint

S

Stainless steel 316 plate

T

Ship-use

 

 

    MDM3051S-DAP H1C[0~20kPa]       A             N                          N 1      1 N        N     The whole spec.


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