- 2 -

Contents Intelligent Pressure Transmitter ....................................................................................... - 1 -

Brief Introduction ........................................................................................................................................... - 3 - Features ......................................................................................................................................................... - 3 - Working Principle .......................................................................................................................................... - 4 - EJC - DP Differential Pressure Transmitter ............................................................................................ - 6 - 1 Performance Specification ....................................................................................................................... - 7 - 2 Functional Specification ............................................................................................................................ - 8 - 3 Installation ................................................................................................................................................... - 9 - 4 Physical Specification ............................................................................................................................. - 10 - 5 Electric connection chart ........................................................................................................................ - 12 - 6 Process connection instruction .............................................................................................................. - 12 - 7 Model and Specification Code Table .................................................................................................... - 12 -

-GP Pressure Transmitter ................................................................................................................ - 14 - -AP Differential Pressure Transmitter ............................................................................................. - 14 -

1 Performance Specification ..................................................................................................................... - 14 - 2 Functional Specification .......................................................................................................................... - 15 - 3 Installation ................................................................................................................................................. - 17 - 4 Physical Specification ............................................................................................................................. - 17 - 5 Electric connection chart ........................................................................................................................ - 19 - 6 Process connection instruction .............................................................................................................. - 19 - 7 Model and Specification Code Table .................................................................................................... - 21 -

-DGP Bracket Installation Gauge Pressure Transmitter ................................................................ - 22 - -DAP Bracket Installation Absolute Pressure Transmitter ........................................................... - 22 -

1 Performance Specification ..................................................................................................................... - 22 - 2 Functional Specification .......................................................................................................................... - 23 - 3 Installation ................................................................................................................................................. - 25 - 4 Physical Specification ............................................................................................................................. - 25 - 5 Electric connection chart ........................................................................................................................ - 27 - 6 Process connection instruction .............................................................................................................. - 28 - 7 Model and Specification Code Table .................................................................................................... - 28 -

EJC Series

EJCEJC

EJCEJC

- 3 -

1 Differential Pressure Transmitter (DP)

Measured media: gas, steam, liquid

Measured range(with no shift): 0Pa~100Pa…3MPa

Accuracy: ±0.075%

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

2 Gauge Pressure Transmitter (GP)

Absolute Pressure Transmitter (AP)

Measured media: gas, steam, liquid

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

Accuracy: ±0.075%

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

3 Bracket Installation Gauge Pressure Transmitter (DGP)

Bracket Installation Absolute Pressure Transmitter (DAP)

Measured media: gas, steam, liquid

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

Accuracy: ±0.075%

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

Features

※ The central sensing element of transmitter uses the world’s leading high-accuracy silicon sensor technology,

accuracy is ±0.075%;

※ Working pressure of transmitter has three levels--16MPa, 25MPa and 40MPa, the highest one-way

overpressure is 40MPa;

※ Excellent static pressure performance, optimal static pressure error ≤±0.1%/10MPa；

EJC-GP/AP Gauge Pressure Transmitter /Absolute Pressure Transmitter

EJC-DGP/DAP Bracket Installation Gauge/Absolute Pressure Transmitter

EJC-DP Differential Pressure Transmitter

- 4 -

※ The inner of pressure sensor integrates high sensitive temperature sensor.

※ Excellent temperature performance, optimum≤± (0.20 ×TD+0.10)%×Span /-20 ℃~65 ℃；

※ All stainless steel 316L, silicone oil filling with welded sealing construction;

※ Low gauge /absolute pressure transmitter uses the world’s leading die resistance to high overload protection.

6kPa: one-way overpressure and protection pressure is 300kPa; 40kPa: one-way overpressure and protection

pressure is 1MPa. The max. Pressure is 50 times of full span pressure.

※ Stable and reliable, optimal long-term drift performance:±0.1%/year, 5-year maintenance-free;

※ Wide measured range: 100Pa~60MPa;

※ Max. 100:1 pressure range proportion adjustable;

※ EMC conforms to GB/T 18268.1-2008 standard;

Working Principle

1 Differential Pressure Transmitter（DP）

Chart 1 Differential Pressure Transmitter (DP)

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.

- 5 -

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.

2 Gauge Pressure Transmitter (EJCGP )

Absolute Pressure Transmitter (EJCAP )

Chart 2 Gauge (GP)pressure transmitter/Absolute（AP）pressure transmitter

Pressure transmitter includes two functional units:

※ Main unit

※ Auxiliary unit

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

Through corrugated, isolated diaphragm and filling oil, process media is pressurized to diaphragm of pressure

sensor. The other end of pressure sensor diaphragm is connected to the air (for gauge measurement) or vacuum(for

absolute measurement). In such way, it makes the resistor of sensor die change so that 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.

3 Bracket Installation Gauge Pressure Transmitter (EJCDGP )

Bracket Installation Absolute Pressure Transmitter (EJCDAP )

- 6 -

Chart 3 Differential Gauge Pressure Transmitter(DGP)/Differential Absolute Pressure Transmitter(DAP)

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 pressure sensor and a temperature sensor.

The pressure sensor is used for gauge or absolute pressure measurement. The temperature is taken as a reference

for temperature compensation. The measured end of pressure sensor is connected to working chamber of sensor

capsule; the negative end is connected to reference chamber of sensor capsule and open to air. In such way, the

pressure difference is transmitted to silicon die of 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.

-DP Differential Pressure Transmitter

-DP Differential Pressure Transmitter is used for level, density, pressure and

flow 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 RSM100 Modem 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)

EJC

EJC

- 7 -

1 Performance Specification

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

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

The accuracy of square root output is 1.5 times of above reference accuracy.

Environmental Temperature Effect

Range Code -20℃~65℃ Total effect value Range Code -40℃~-20℃和 65℃~85℃Total effect value

A ±(0.45×TD+0.25)%×Span A ±(0.45×TD+0.25)%×Span

B ±(0.30×TD+0.20)%×Span B ±(0.30×TD+0.20)%×Span

C/D/F ±(0.20×TD+0.10)%×Span C/D/F ±(0.20×TD+0.10)%×Span

Over range effect: ±0.075%×Span

Static pressure effect

Overpressure effect

Range Code Effect value

A ±0.5%×Span/4MPa

B ±0.2%×Span/16MPa

C/D/F ±0.1%×Span/16MPa

Long-term stability

Range Code Effect value

A ±0.5%×Span/1 year

B ±0.2%×Span/1 year

C/D/F ±0.1%×Span/1 year

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

Range Code Effect value

A ±(0.5%Span)/4MPa

B ±(0.3%Span)/10MPa

C/D/F ±(0.1%Span)/10MPa

- 8 -

2 Functional Specification

Pressure range and limits

range/limits kPa mbar

A range 0.1～1 1～10

limits -1～1 -10～10

B range 0.2～6 2～60

limits -6～6 -60～60

C range 0.4～40 4～400

limits -40～40 -400～400

D range 2.5～250 25～2500

limits -250～250 -2500～2500

F range 30～3000 0.3～30 bar

limits -500～3000 -5～30 bar

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 adjusted 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

other 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

Alarm Current

Low alarm mode(min.): 3.7mA

High alarm mode(max.): 21mA

No alarm mode(holding): holding the active current value before failure

Standard alarm current mode: High alarm mode

- 9 -

Response time

The damping constant of amplifier parts is 0.1s, time constant of sensor is 0.1s～1.6s, which is decided by the

pressure range and pressure range ratio. The additional adjustable time constant is 0.1s～60s. The non-linearity

output(eg. Square root output) is influenced by this function and could be calculated by it.

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 ℃

Working pressure

Rated working pressure: 16MPa, 25MPa, 40MPa

Static pressure limit

From 3.5kPa absolute pressure to rated pressure, protection pressure can be pressurized to both high and low

side of transmitter; and it can be higher than 1.5 times of rated pressure.

One-way overpressure limit

One-way overpressure could reach the rated pressure

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: 250Ω~600Ω

Electric Connection

- 10 -

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

Measuring capsule: Stainless Steel 316L

Diaphragm: Stainless Steel 316L, Hast-alloy C

Process flange: Stainless steel 304

Nut and bolt: Stainless steel(A4)

Filling liquid: silicone oil

Sealing ring: NBR, FKM, PTFE

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 Radiofrequency

ectromagnetic 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

- 11 -

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

(2) B degree: During, 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 Dimension

Unit: mm

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

Wall Installation Vertical Piping Installation

06

- 12 -

5 Electric connection chart

Note: the function of shortcut interface is equal to signal terminal.

6 Process connection instruction

7 Model and Specification Code Table

-DP Intelligent Differential Pressure Transmitter

Code Output

H 4mA～20mA DC with HART

N 4mA～20mA DC analog output

Code Pressure range

A 0Pa…100Pa~1kPa（0mm…10mm~100 mm H2O）/(0mbar…1mbar ~10mbar)

B 0Pa…200Pa~6kPa（0mm…20mm~600 mm H2O）/(0mbar…2mbar ~60mbar)

C 0Pa…400Pa~40kPa（0mm…40mm~4000 mm H2O）/(0mbar…20mbar ~400mbar)

D 0kPa…2.5kPa~250kPa（0m…0.25m~25 m H2O）/(0mbar…25mbar ~2500mbar)

F 0kPa…30kPa~3MPa（0m…3m~300 m H2O）/ (0bar…0.3bar~30bar)

Code Diaphragm material Filling

A Stainless steel316L silicone oil

C Hastelloy C silicone oil

Code Rated working pressure 0 0.2MPa (only for range A)

EJC

- 13 -

7 7MPa (only for range A) 1 16MPa 2 25MPa 3 40MPa

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 Sealing materials contacting with liquid N NBR F FKM

P PTFE

Code Additional function N None F Square root output

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 Process connection parts N None

1 1/2 NPT Female with stainless steel oval flange

2 M20X1.5 male with stainless steel T joint

Code Display N No display 1 LCD 2 LCD with back-light

Code Others N None A Intrinsic safe D Exd

E Exd version with Explosion-proof cable joint

S Stainless steel 316 plate

-DP H C A 1 B N F 1 1 1 N The whole spec EJC

- 14 -

-GP Pressure Transmitter

-AP Differential Pressure Transmitter

series gauge/absolute pressure transmitter is used for level, density,

pressure and flow measurement of liquid, gas and steam. Then it will outputs

4mA~20mA DC HART signal and also it could be connected to RST375 handing

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

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

The accuracy of square root output is 1.5 times of above reference accuracy.

Environmental Temperature Effect

Range code -20℃ ~ 65℃ total effect value

B/L ±(0.30×TD+0.20)%×Span

others ±(0.20×TD+0.10)%×Span

Range code -40℃~-20℃ and 65℃ ~85℃ total effect value

B/L ±(0.30×TD+0.20)%×Span

others ±(0.20×TD+0.10)%×Span

Over pressure effect: ±0.075%×Span

Long-term stability

Range Code Effect value

B/L ±0.2%×Span/1 year

other ±0.1%×Span/1 year

Power effect

±0.001% /10V (12V~42V DC)，negligible.

EJC

EJC

EJC

- 15 -

2 Functional Specification

Pressure range and limits(EJC-GP Gauge Pressure)

range/limits kPa bar

B range 0.6~6 (6~60)mbar

limits -6~6 (-60~60)mbar

C range 2~40 0.02~0.4

limits -40~40 -0.4~0.4

D range 2.5~250 0.025~2.5

limits -100~250 -1~2.5

F range 30~3000 0.3~30

limits -100~3000 -1~30

G range (0.1~10)MPa 1~100

limits (-0.1~10)MPa -1~100

H range (0.21~21)MPa 2.1~210

limits (-0.1~21)MPa -1~210

I range (0.4~40)MPa 4~400

limits (-0.1～40)Mpa -1~400

J range (0.6~60)MPa 6~600

limits (-0.1~60)MPa -1~600

Pressure range and limits (MDM3051S-AP Absolute Pressure)

range/limits kPa bar

L range 2~40 0.02~0.4

limits 0~40 0~0.4

M range 2.5~250 0.025~2.5

limits 0~250 0~2.5

O 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.

- 16 -

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 <0.25kPa for range C and <0.15kPa for other ranges

which could be calibrated by zero setting. No other 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

Alarm Current

Low alarm mode(min.): 3.7mA

High alarm mode(max.): 21mA

No alarm mode(holding): holding the active current value before failure

Standard alarm current mode: High alarm mode

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

(B)

40kPa

(C/L)

250kPa

(D/M)

3MPa

(F/O)

Overpressure

limit 0.2MPa 1MPa 4MPa 16MPa

Overpressure 10MPa 21MPa 40MPa 60MPa

- 17 -

range (G) (H) (I) (K)

Overpressure

limit 20MPa 50MPa 50MPa 70MPa

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

Standard process connection: NPT 1/2 female, which can be transferred to NPT 1/2 male, G1/2 male, M20×1.5

male and KF16 vacuum port etc.

4 Physical Specification

Material

Diaphragm: Stainless Steel 316L, Hast-alloy C

Process Connection: Stainless steel 316L

Filling liquid: silicone oil

Sealing ring: NBR, FKM, PTFE

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

Housing sealing ring: NBR

Nameplate: Stainless steel 304

- 18 -

Weight

1.6kg (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

ectromagnetic 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 Dimension

Unit: mm

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

06

- 19 -

Wall Installation Vertical Piping Installation

5 Electric connection chart

Note: the function of shortcut interface is equal to signal terminal.

6 Process connection instruction

6.1 Standard version（code 1）

Pressure port for range D/M/F/G/H/I/K/O Pressure port for range B/C/L

- 20 -

6.2 Derived threads

1/2 NPT male (code 2) M20×1.5 male (code 3)

G 1/2 male (code 4) Vacuum port DIN 28403 KF16 / ISO 2861(code 5)

1/4NPT male (code 6)

- 21 -

7 Model and Specification Code Table

-GP Intelligent Pressure Transmitter

-AP Intelligent Absolute Pressure Transmitter

Code Output

H 4mA～20mADC with HART

N 4mA～20mADC analog output

Code Pressure range

Gauge

B 0kPa…0.6kPa~6kPa（0mm…60mm~600 mm H2O）/(0mbar…6mbar~60mbar)

C 0kPa…2kPa~40kPa /（0mm…200mm~4000 mm H2O）/(0mbar…20mbar~400mbar)

D 0kPa…2.5kPa~250kPa /（0m…0.25m~25 m H2O）/(0mbar…25mbar~2500mbar)

F 0kPa…30kPa~3MPa /（0m…3m~300 m H2O）/(0bar…0.3bar~30bar)

G 0MPa…0.1MPa~10MPa /(0bar…1bar~100bar)

H 0MPa…0.21MPa~21MPa /（0bar…2.1bar~210bar）

I 0MPa…0.4MPa~40MPa /（0bar…4bar~400bar）

J 0MPa…0.6MPa~60MPa /（0bar…6bar~600bar）

Absolute

L 0kPa…2kPa~40kPa /（0mm…200mm~4000mm H2O）/(0mbar…20mbar~400mbar)

M 0kPa…2.5kPa~250kPa /(0mbar…25mbar~2500mbar)

O 0kPa…30kPa~3MPa /(0bar…0.3bar~30bar)

Code Diaphragm material Filling

A Stainless steel316L silicone oil

C Hastelloy C silicone oil

Code Process connection 1 1/2 NPT female 2 1/2 NPT male（with 1/4 NPT inside） 3 M20x1.5 male 4 G1/2 male 5 Vacuum connector DIN 28403 KF16 / ISO 2861[2] 6 1/4 NPT male

Code Process connection parts

N None

O No oil processing (For oxygen measurement: fluorocarbon oil filling, viton sealing ring )

Code Mounting bracket N None 1 Stainless steel 2 Galvanized Carbon Steel

Code Display

EJC

EJC

- 22 -

N No display 1 LCD 2 LCD with back-light

Code Others N None A Intrinsic safe D Exd

E Exd version with Explosion-proof cable joint

-DP H L A 1 N N 1 N The whole spec

Note: Vacuum port DIN 28403 KF16 / ISO 2861 is only suitable for pressure range within 2.5bar.

-DGP Bracket Installation Gauge Pressure Transmitter

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

If TD>10 (TD=Max. Pressure range/calibration range), the accuracy 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

EJC

EJC

EJC

- 23 -

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-DGP gauge pressure transmitter)

range/limits kPa bar

1B range 0.6~6 (6~60)mbar

limits -6~6 (-60~60)mbar

1C range 2~40 0.02~0.4

limits -40~40 -0.4~0.4

1D range 2.5~250 0.025~2.5

limits -100~250 -1~2.5

1F range 30~3000 0.3~30

limits -100~3000 -1~30

1G range (0.1~10)MPa 1~100

limits (-0.1~10)MPa -1~100

1H range (0.21~21)MPa 2.1~210

limits (-0.1~21)MPa -1~210

1I range (0.4~40)MPa 4~400

limits (-0.1~40)Mpa -1~400

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.

- 24 -

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

Alarm Current

Low alarm mode(min.): 3.7mA

High alarm mode(max.): 21mA

No alarm mode(holding): holding the active current value before failure

Standard alarm current mode: High alarm mode

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

- 25 -

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 316L

Filling liquid: silicone oil

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

Housing sealing ring: NBR

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

- 26 -

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

ectromagnetic 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 Dimension

Unit:mm

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

- 27 -

Wall Installation Vertical Piping Installation

5 Electric connection chart

Note: the function of shortcut interface is equal to signal terminal.

- 28 -

6 Process connection instruction

7 Model and Specification Code Table

-DGP Bracket Installation Intelligent Pressure Transmitter

-DAP Bracket Installation Intelligent Absolute Pressure Transmitter

Code Output

H 4mA～20mA DC with HART

N 4mA～20mA DC analog output

Code Pressure range

Gauge

1B 0kPa…0.6kPa~6kPa（0mm…60mm~600mm H2O）/(0mbar…6mbar~60mbar)

1C 0kPa…2kPa~40kPa /（0mm…200mm~4000mm H2O）/(0mbar…20mbar~400mbar)

1D 0kPa…2.5kPa~250kPa /（0m…0.25m~25m H2O）/(0mbar…25mbar~2500mbar)

1F 0kPa…30kPa~3MPa /（0m…3m~300m H2O）/(0bar…0.3bar~30bar)

1G 0MPa…0.1MPa~10MPa /(0bar…1bar~100bar)

1H 0MPa…0.21MPa~21MPa /（0bar…2.1bar~210bar）

1I 0MPa…0.4MPa~40MPa /（0bar…4bar~400bar）

Absolute

1L 0kPa…2kPa~40kPa /（0mm…200mm~4000mm H2O）/(0mbar…20mbar~400mbar)

1M 0kPa…2.5kPa~250kPa /(0mbar…25mbar~2500mbar)

1O 0kPa…30kPa~3MPa /(0bar…0.3bar~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

EJC

EJC

- 29 -

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 Process connection parts N None

O No oil processing（For oxygen measurement: fluorocarbon oil filling, viton sealing ring ）

Code Mounting bracket N None 1 Stainless steel 2 Galvanized Carbon Steel

Code Display N No display 1 LCD 2 LCD with back-light

Code Process connection parts N None

1 1/2 NPT Female with stainless steel oval flange

2 M20X1.5 male with stainless steel T joint

Code Others N None A Intrinsic safe D Exd

E Exd version with Explosion-proof cable joint

S stainless steel 316 plate

-DP H 1C A N N N 1 N N The whole spec

EJC