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.
Measurement range of differential pressure and liquid level
Lower limit: -100% URL from (continuously adjustable) Upper limit: to + 100% URL (continuously adjustable) range
Table 1 Compartable of relationship between range code and range
Quota code
minimum range
metre fullscale
Rated pressure (max.)
B
1kPa
6kPa
Rated pressure of a single flange
C
4kPa
40kPa
E
25kPa
250kPa
E
200kPa
2MPa
Table 2 Control table of the relationship between single flange and minimum range
Single flange
nominal diameter
minimum range
Flat type
DN 50/2″
10kPa
DN 80/3″
1kPa
DN 4″
1kPa
plug-in
DN 50/2″
16kPa
DN 80/3″
1kPa
DN 4″
1kPa
The minimum range of the differential pressure level 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 liquid level transmitter shall be the minimum value of the maximum range of the transmitter body and the single flange rated pressure.
2 saída
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
3 response time
The damping constant of the amplifier component is 0.1s; the sensor and single-flange time constant is 0.2s~2s, depending on the range and range ratio. The additional adjustable time constant is: 0.1s~60s. The added adjustable time constant is: 0.1s~60s.
4 general conditions
4.1 Installation conditions
A single flange transmitter can be directly fixed in any position. The best state is to make the process flange axis in the vertical state, 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.
4.2 ambient condition
ambient temperature
Minimum: Depending on the filling fluid, maximum: 85℃
Storage temperature / transport temperature at-20℃ ~65℃
Minimum: Depending on the filling fluid, maximum: 85℃
humidade relativa
0%～100%
shock resistance
Acceleration: 50g
Duration: 11ms for vibration resistance
2g to 500Hz electromagnetic compatibility (EMC)
See Table 3 on the next page
4.3 Process medium limit
Limit of medium temperature: -30℃ ~180℃
The pressure limit of the transmitter body is from 3.5kPa absolute pressure to rated pressure, the protection pressure can be greater than 1.5 times the rated pressure, and added to both sides of the transmitter.
The low pressure side is the rated pressure of the transmitter body, and the high pressure side is the single flange rated pressure, which may appear modifiable zero drift.weight
DN 50 / 2 ″ about 7~10kg; DN 80 / 3 ″ about 8~11kg and DN 4 ″ about 9~12kg. Explosion proof performance
NEPSI Isolation permit: Ex dⅡC T6 NEPSI License: Ex iaⅡC T4 allowed temperature: -40℃ ~65℃
4.4 Power supply and load conditions
The power supply voltage is 24V R (Us-12V) / I maxkΩ where Imax = 23 mA
Maximum power supply voltage: 42VDC
Minimum power supply voltage: 12VDC, 15VDC (backlit LCD display)
Range of digital communication load: 230 Ω ~600 Ω material
M201.5 cable sealing buckle, the wiring terminal is suitable for 0.5 m m 2~ 2. 5 m m 2 wire.
procedure linkage
UNF 7 / 16 ″ inner thread on the transmitter LV side. The single flange on the high voltage side of the transmitter meets the ANSI standard or the DIN standard. Can be installed directly, and refer to the dimensional drawing.
Housing protection class IP67
Table 3 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)
UM
5
Power-frequency magnetic field immunity
GB/T 17626.8-2006
30A/m
UM
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)
UM
Note 1: A Performance grade description: normal within the limit of technical specification.
Note 2: B Performance rating description: During the test, the function or performance is temporarily reduced or lost, but it can be restored by itself, and the actual health, storage and data do not change.
outline dimension
nominal diameter
rated pressure
ΦD
ΦK
Φ d1, insert set
Φ d2, Flat Eq
Φd3
para
b
Requires the bolt
quantity
screw thread
DN50
PN 1.6/4MPa
165
125
48.3
57
102
3+0.5
20
4
M16
(Seal face type DIN2526E)
PN 6.4MPa
180
135
48.3
57
102
3+0.5
26
4
M20
(Flange DIN2501)
PN 10MPa
195
145
48.3
57
102
3+0.5
28
4
M20
DN80
PN 1.6/4MPa
200
160
76
75
138
3+0.5
24
8
M16
(Seal face type DIN2526E)
PN 6.4MPa
215
170
76
75
138
3+0.5
28
8
M20
(Flange DIN2501)
PN 10MPa
230
180
76
75
138
3+0.5
32
8
M24
DN 2″(ANSI B 16.5 RF)
150psi 300psi 600psi
152.4165.1165.1
120.6127.0127.0
48.348.348.3
575757
92.192.192.1
3+0.53+0.56.35
17.420.631.75
488
M18 M18 M18
DN 3″(ANSI B 16.5 RF)
150psi 300psi 600psi
190.5209.5209.5
152.4168.3168.3
767676
757575
127127127
3+0.53+0.56.35
22.227.038.05
488
M16 M20 M20
DN 4″
150psi
229
191
89
89
157
3+0.5
30
8
M18
(ANSI B 16.5 RF)
300psi
255
200
89
89
157
3+0.5
32
8
M18
Note: The user can choose the mounting bolts and nuts.
Electrical connection diagram
Description of the process connection of the low-pressure end
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