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Address: Xiongyi, Jinhe Road, Jinhu County, Jiangsu Province
Lunan
Phone: 0517-86900901
0517-86900921
0517-86900920
Fax: 0517-86900902
Postcode: 211600
http://zzyfwh.com
Email: chinadongxiang@163.com
Transmitter instrument
Micro differential pressure transmitter

The micro-differential pressure transmitter is used to measure the small differential pressure such as the internal pressure of the furnace, and then convert it into a 4-20 mA DC signal output. The DX1151 / 3351DR intelligent micro-differential pressure transmitter can also communicate with the HART communicator, use it to set, monitor or form a field monitoring system with the host computer. DX1151 / 3351DR field-adjustable intelligent differential pressure transmitter can be separated from the hand-held controller, and can realize on-site zero adjustment and configuration by pressing keys.
1. Performance specifications (zero reference calibration range, under reference conditions, silicone oil-filled, 316 L stainless steel isolation diaphragm.)

1.1. Reference accuracy
1.1.1. Digital and intelligent: ± 0.2% calibration range
1.1.2. Analog, linear: ± 0.5% calibration range
1.2. Stability
1.2.1. Digital and intelligent: 6 months, ± 0.2% URL
1.2.2. Analog, linear: 6 months, ± 0.5% URL
1.3. Ambient temperature effect
1.3.1. Digital and intelligent:
Zero point error: ± 0.2% URL / 56 ℃
Overall error: ± (0.2% URL + 0.18% calibration range) / 56 ℃
1.3.2. Analog and linear zero point error: ± 0.5% URL / 56 ℃
Overall error: ± (0.5% URL + 0.5% calibration range) / 56 ℃
1.4. The zero error caused by static pressure is ± 0.5% URL. This can be corrected online by re-zeroing.
1.5. Vibration influence In any axial direction, the vibration influence at 200Hz is ± 0.5% URL / g
1.6. Power supply impact: less than ± 0.005% output range / volt.
1.7. Load impact:
No load effect unless there is a change in the supply voltage.
1.8. Electromagnetic Interference / Radio Frequency Interference (EMI / RFI Impact)
From 20 to 1000MHz, when the field strength reaches 30V / M, the output drift is less than ± 0.1% of range
1.9. The zero drift caused by the installation position is at most ± 0.25kPa. All zero drifts can be corrected; no effect on range.

2. Functional Specifications
2.1. Measuring range: Differential pressure: 0-0.125 ~ 1.5KPa
Static pressure: 1, 4, 6.9MPa
2.2. Zero and span
2.2.1. Digital and intelligent: It can be adjusted by local range and zero button, or remotely by HART communicator

2.2.2. Analog, linear: range and zero continuously adjustable
2.3. Zero positive and negative transitions For zero negative transitions, the lower range limit must be greater than or equal to -URL; for positive zero transitions, the upper limit must be less than or equal to + URL. The verification range is greater than or equal to the minimum range.
2.4. Output digital and intelligent:
4 ~ 20mA DC, user can choose linear or square root output, digital process variable is superimposed on 4 ~ 20mA DC signal, which can be used by host computer using HART protocol.
Analog, linear: 4 ~ 20mA DC, linear with process pressure.
2.5. Digital and intelligent damping time constant: The time constant is adjustable, in 0.1 second increments, from a minimum of 16.0 seconds. Analog, linear: the time constant is adjustable, from a minimum of 1.67 seconds.
2.6. Digital and intelligent ambient temperature limit: -40 to 85 ° C
Analog, linear: -40 to 93 ° C
With LCD meter: -30 to 60 ℃
2.7. Process temperature limit silicone filling: -40 to 104 ° C
Filled with inert solution: -18 to 71 ° C
2.8. Digital and intelligent storage temperature limit: -51 to 85 ° C
Analog, linear: -51 to 121 ° C
With LCD meter: -40 to 70 ° C
2.9. Ambient humidity
0-100% relative humidity
2.10. Static pressure and overpressure limit transmitters will not cause damage if the pressure is 0 to 6.9MPa. When working in the static pressure range of 3.45kPa to 6.9MPa, it meets the performance specifications.
2.11. Volume change is less than 0.16cm3


◆ Selection method

DX1151 / 3351DR

Micro differential pressure transmitter

Code

Measuring range KPa

2

1.5KPa 0-0.1251.5KPa

Code

Output

F

4-20mA

Code

Structural materials

Flanges and fittings

排液阀 Bleed / drain valve

Isolation diaphragm

Filling liquid

twenty two

不锈钢 316 stainless steel

不锈钢 316 stainless steel

不锈钢 316 stainless steel

Silicone oil

Code

Working pressure MPa

A-

1

B-

特殊6.94 ( Special 6.9 )

Code

Option

M1

线性指示表 0-100% linear indicator

M2

LED display meter

M3

显示表 LCD display table

B1

Tube mounting bracket

B2

Panel mounting bracket

B3

Tube mount flat bracket

D1

Side relief valve on top of pressure chamber

D2

Side relief valve under the pressure chamber

Not note

锥管螺纹接头 1 / 2NPT taper pipe threaded joint

C2

,带后部焊接Ф14引压管的球锥连接头 T-shaped threaded joint M20 × 1.5 , ball-cone connector with welded Ф14 pressure tube

d

Flameproof dⅡBT4

i

Intrinsically safe iaⅡCT6

s

Stainless steel three valve group