Absolute Pressure Transmitter
Absolute Pressure Transmitter
Brief Description

3151AP absolute pressure transmitter adopts advanced-technology high-accurate compact smart sensor, to compensate temperature and static pressure with digital compensation technology which improves measuring accuracy and decreases temperature drift. With

Details

Features

Microprocessor makes it more flexible and powerful;

With strong self-diagnose performance, zero and range regulation don’t influence each other;

With perfect remote and local set and calibration functions;

Two-wire system which is in accordance with HART PROTOCOL, can communicate with HART PROTOCOL terminal without interrupting output;

Digital compensation which can compensate to temperature and static pressure;

With good stability performance and high-accuracy, damping is adjustable, strong one-way overload resistant capacity;

Without mechanical driving components which reduce maintenance, solid and vibration-resistant;

Components are in common use which is easy for maintenance;

Wetted parts diaphragm material is optional and can be used for a day long.

 Technical Parameters

Output signal: 4~20mAoutput with HART® protocol digital signal（two-wire system）

Power supply: Outside power24V DC, (power range 12V~45V)

Installation: Explosion-proof dⅡCT5, intrinsic safety iaⅡCT5

Drift features: Range upper and lower limit shall not exceed range limit after positive and negative drift. Maximum positive drift is 0.975URL, maximum negative drift is-URL at minimum range.

Temperature range: medium temperature -40～104℃, storage temperature -40～85℃, working temperature -40～85℃/-20～70℃ (with digital head)

Relative humidity: 0～100%

Damping: time constant within 0.2～32.0S is adjustable

Start time: 3S, no need to preheat

Performance: under standard test conditions like without drift, 316stainless steel isolation diaphragm etc.

Range ratio: 40:1

Accuracy: range is 3, 4, 5

         Range ratio is 1:1 to 10:1, ±0.1% of calibration range

         Range ratio is 10:1 to 40:1, ±0.05（1+0.1URL/range）% of range

         Range is 6, 7, 8, 9, 0

         Range ratio is 1:1 to 10:1, ±0.15% of calibration range

         Range ratio is 10:1 to 40:1, ±0.075（1+0.1URL/range）% of range

Stability: error in six months is ±0.15% of maximum range

Over pressure influence: error in six months is ±0.15% of maximum range after being added 140kgf/cm²

Power supply influence: less than 0.005%/V of output range

Vibration influence: frequency is 200Hz at any axial direction; error is ±0.05%/g of maximum range

Load influence: provided voltage input transmitter is higher than 12V, there will be no load influence within load working area

Mounting influence: maximum zero error is more than 0.25 kPa, but adjustable without influence to range, when you measure body, there will be no influence to flange rotary.

 Model

3151AP

Intelligent Absolute Pressure Transmitter

 

code

Gauge pressure range（KPa)

Absolute pressure range（KPa)

1

0-0.15~7.5

0-0.15~7.5

2

0-4~40

0-4~40

3

0-2~200

0-2~200

4

0-7~700

0-7~700

5

0-21~2100

0-21~2100

6

0-70~7000

0-70~7000

7

0-210~21000

0-210~21000（special range is customized）

8

0-420~41000（special range is customized）

 

 

code

Output

A

4-20mA standard output

H

4-20mA+HARTprotocol

F

FF bus protocol

 

code

Flange joint

Vent valve

Isolation diaphragm

Filling

22

316SS

316SS

316SS

Silicon oil (normal)

23

316SS

316SS

Hastelloy C

24

316SS

316SS

​Monel

25

316SS

316SS

Tantalum

33

Hastelloy C

Hastelloy C

Hastelloy C

35

Hastelloy C

Hastelloy C

Tantalum

44

Monel

Monel

Monel

 

code

Connection

O

1/4NPT F

T

1/2NPT F

S1

With one remote device（positive pressure side）

 

code

Display

D

Digital head

M

Digital head with set button

N

Without head

 

code

Mounting bracket

B1

Bend bracket pipe mounting 2"

B2

Bend bracket plate mounting

B3

Flat bracket pipe mounting 2"

 

code

Explosion performance

Ex

Explosion-proof

id

Intrinsic-safety

3151AP

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