Single flange remote transmission diaphragm pressure transmitter
Description du produit
1 Apply
The membrane box of the remote transmission transmitter is a pressure sensor assembly used to prevent the medium in the pipeline from directly entering the transmitter, and the filling liquid such as silicone oil is used to transfer the pressure between the transmitter and the transmitter.
The SM39PWB-DFLYC series surface pressure / absolute pressure far transmission transmitter is used to measure the liquid level, density, pressure of liquid, gas or steam, and then convert it into 4 mA to 20 mADC HART current signal output.
It can also communicate with HART handheld terminals for parameter setting, process monitoring, etc.
The measurement range of SM39PWB-DFLYC series (without migration) is 0-6 kPa ~ 25 MPa, and the rated pressure of remote flange is 1. 6 / 4M P a, 6. 4 MPa 10MPa, 150 psi, 300 psi or 600 psi, respectively.
2 Working principle and structure
SM39PWB-DFLYC series gauge pressure / voltage remote transmission transmitter structure consists of SM39PWB-DFLYC series gauge pressure / voltage transmitter and welded mounted capillary remote transmission flange. The working principle is the same as that of the SM39PWB-DFLYC series pressure / pressure transmitter, but the pressure transfer path is slightly different: the pressure acting on the side of the remote flange, first through the diaphragm and filling fluid on the remote flange, then through the capillary, and finally to the measuring end of the measuring sensor.
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Single flange remote transmission diaphragm pressure transmitter input
Measurement parameters: surface pressure, absolute pressure, liquid level measurement range
Mege pressure remote transmitter:
Lower limit: -100% URL (continuously adjustable)
Upper limit: to + 100% URL (continuously adjustable)
Pressure remote transmitter:
Lower limit: from 0% ~ 100% URL (continuously adjustable)
Upper limit: to + 100% URL (continuously adjustable)
Table 1 Compartable of relationship between range code and range
Quota code
minimum range
metre fullscale
Rated pressure (max.)
C
6kPa
40kPa
Rated pressure of a single flange
D
25kPa
250kPa
F
30kPa
3MPa
G
1MPa
10MPa
H
2.1MPa
21MPa
I
4MPa
40MPa
L
6kPa absolute pressure
40kPa absolute pressure
M
25kPa absolute pressure
250kPa absolute pressure
O
At 30kPa of absolute pressure
3MPa absolute pressure
Table 2 Control table of the relationship between distant flange and minimum range
flange
nominal diameter
Minimum / maximum range
Longest capillary length
Flat type
DN25/1〞
160kPa/25MPa
10m
DN50/2〞
10kPa/10MPa
12m
DN80/3〞
6kPa/10MPa
16m
DN4〞
6kPa/3MPa
16m
plug-in
DN50/2〞
16kPa/10MPa
10m
DN80/3〞
6kPa/10MPa
16m
DN4〞
6kPa/25MPa
16m
Threaded installationTerrestrial transmission
external diameter109mm
160kPa/25MPa
10m
Note: The minimum range of the surface pressure / remote transmitter shall be the larger value of the minimum range in Table 1 and Table 2. The adjusted range shall not be less than the minimum range. The maximum range of the gauge / pressure remote transmitter shall be the minimum value of the maximum range and the rated pressure of the remote flange.
Single flange remote transmission diaphragm pressure transmitteroutput
output signal
Second-line system, 4 mA ~ 20 mADC HART output, digital communication, HART protocol loaded on the 4 mA ~ 20 m ADC signal. Output signal limit: I mi n = 3.9 mA and Imax = 2 0 .5 mA
Single flange remote transmission diaphragm pressure transmitterresponse time
The damping constant of the amplifier component is 0.1s; the time constant of the sensor and remote flange is 0.2s~6s, depending on the range of the sensor, the length of the capillary, and the viscosity of the filling fluid. The additional adjustable time constant is: 0.1s~60s.
Single flange remote transmission diaphragm pressure transmittergeneral conditions
Installation conditions
The surface pressure / absolute pressure remote transmission transmitter without capillary can be installed directly through the remote transmission flange, and the position deviation will produce a correctable zero offset. The electronic watch case can rotate up to 360°, and the positioning screws can hold it in any position.
The pressure / remote flange is connected to supporting flanges conforming to ANSI / DIN standard, which shall be provided with soft gasers and mounting bolts and nuts (optional mounting bolts and nuts).
For the surface pressure / absolute pressure remote transmitter with capillary, if the remote seal device is lower than the transmitter body, the maximum height drop between the remote seal device and the transmitter body should be <5m.
When the working pressure is below 100kPa absolute pressure, the transmitter body must be below the remote transmission seal. The minimum bending radius of the capillary is 75mm, and winding is strictly prohibited!
Single flange remote transmission diaphragm pressure transmitterambient condition
ambient temperature
Minimum: Depending on the filling fluid, maximum: 85℃
-20℃ ~65℃ with liquid crystal display and fluorine rubber sealing ring
Minimum: Depending on the filling fluid, maximum: 85℃
Relative humidity: 0%~100% impact resistance
Acceleration: 50g
Duration: 11ms for vibration resistance
2g to 500Hz electromagnetic compatibility (EMC)
See Table 4 on the next page
Process medium limit temperature Limit medium temperature: -30℃ ~400℃
Table 3 Table of filling fluid, working temperature and minimum working pressure
Filler
silicone oil(S)
High temperature silicone oil(H)
Ultra-high temperature silicone oil(U)
plant oil(V)
Density (25℃)
960kg/m³
980kg/m³
1020kg/m³
937kg/m³
operating temperature range
-30℃~200℃
-10℃~350℃
-10℃~400℃
0℃~250℃
temperature
Working static pressure range (kPa pressure)
20℃
>10
>10
>10
>25
100℃
>25
>25
>25
>50
150℃
>50
>50
>50
>75
200℃
>75
>75
>75
>100
250℃
>100
>100
>100
350℃
>100
>100
400℃
>100
Note: Beyond the above working temperature and pressure relationship range, the requirements can be met by special design. Transmitter body pressure limit: Vacuum to maximum pressure remote flange rated pressure:
M201.5 cable sealing buckle, the wiring terminal is suitable for 0.5 m m 2~ 2. 5 m m 2 wire.procedure linkage:
Remote pass flanges meet ANSI standards or DIN standards. Can be installed directly, refer to the dimension table. Level of enclosure protection:
IP67
Table 4 Table table for electromagnetic compatibility
order number
test item
basic criterion
test condition
Performance level
1
Radiation interference (enclosure)
GB / T 9254-2008 Table 5
30MHz~1000MHz
qualified
2
conducted interference(DC power supply port)
GB / T 9254-2008 Table 1
0.15MHz~30MHz
qualified
3
Electrostatic discharge (ESD) immunity
GB/T 17626.2-2006
4kV (contact point)8kV (air)
B
4
RF 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
Electric fast transient pulse populationnoise immunity
GB/T 17626.4-2008
2kV(5/50ns,5kHz)
B
7
Wave surge resistance
GB/T 17626.5-2008
1kV (between the lines)2kV (between lines and ground)(1.2us/50us)
B
8
Conduction of the RF field inductionInterference with perturbation
GB/T 17626.6-2008
3V(150kHz~80MHz)
A
(2) B performance level description: during the test, the function or performance is temporarily reduced or lost, but it can be restored by itself, and the actual operation status, storage and data do not change.
Outline dimension
nominal diameter
t
b
Requires the bolt
quantity
screw thread
DN50
3+0.5
20
4
M16
(Seal surface DIN2526E
3+0.5
26
4
M20
(Flange, DIN2501)
3+0.5
28
4
M20
DN80
3+0.5
24
8
M16
(Seal surface DIN2526E
3+0.5
28
8
M20
(Flange, DIN2501)
3+0.5
32
8
M24
DN 2″(ANSI B 16.5 RF type
3+0.53+0.56.35
17.420.631.75
488
M18 M18 M18
3+0.5
22.2
488
M16 M20 M20
DN 3″
3+0.5
27.0
(ANSI B 16.5 RF type
6.35
38.0
5
DN 4″
3+0.5
30
8
M18
(ANSI B 16.5 RF type
3+0.5
32
8
M18
Table 6 Structural dimensions of remote transmission seal device with internal diaphragm conforming to DIN 2501 standard
DN
PN
size,mm
weight(kg)
D
K
d4
b
f
H
d2
G2
25
1MPa/4MPa
115
85
68
22
2
-
14
-
1.5
25
6.3MPa/10MPa
140
100
68
24
2
52
-
4×M16
3.2
16MPa
140
100
68
24
2
52
-
4×M16
3.6
25MPa
150
105
68
28
2
96
-
4×M20
4
Table 7 Structural dimensions of remote transmission seal device with internal diaphragm conforming to ANSI B 16.5 standard