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SM39PWB-CY differential pressure transmitter
The SM39PWB-CY differential pressure transmitter is used to measure the level, density, pressure, and flow rate of liquids, gases, or steam, and then converts it into a 4mA～20mADC HART current signal output. It can also communicate with a HART handheld terminal for parameter setting and process monitoring.
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SM39PWB-CY Differential pressure transmitters are used to measure the level, density, pressure, and flow of liquids, gases, or steam, and then convert them into 4mA ~ 20mADC HART current signal output. It can also communicate with a HART handheld terminal for parameter setting, process monitoring, etc.
Standard Specifications
（ The range is calibrated based on the standard zero point, using 316L stainless steel diaphragm, filled with silicone oil）
- Performance Specifications
Calibration reference accuracy (including linearity, hysteresis, and repeatability from zero point ) ：
± 0.075% If TD>10 (TD= maximum range/adjustable range), then: ±(0.0075×TD)%
The square root output accuracy is 1.5 times the above linear reference accuracy.
Environmental Temperature Influence
|
Range Code |
Total influence at -20℃～65℃ |
Range Code |
Total influence at -40℃～-20℃ and 65℃～85℃ |
|
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 Influence
±0.075%×Span
Static Pressure Influence
|
Range Code |
Influence |
|
A |
±(0.5%Span)/4MPa |
|
B |
±(0.3%Span)/16MPa |
|
F/G/H/I/J |
±(0.1%Span)/16MPa |
Overpressure Influence
|
Range Code |
Influence |
|
A |
±0.5%×Span/4MPa |
|
B/C/D/E |
±0.2%×Span/16MPa |
|
F/G/H/I/J |
±0.1%×Span/16MPa |
Long-term Stability
|
Range Code |
Influence |
|
|
A |
±0.5%×Span/1 |
year |
|
B |
±0.2%×Span/1 |
year |
|
F/G/H/I/J |
±0.1%×Span/1 |
year |
Power Supply Influence
±0.001% /10V (12～42V DC), negligible.
- Functional Specifications
Range and Span
|
Range/Span |
kPa |
|
|
A |
Range |
0～1 |
|
Span |
-3000～3000 |
|
|
B |
Range |
1～100 |
|
Span |
-16000～16000 |
|
|
C |
Range |
100～500 |
|
Span |
-16000～16000 |
|
|
D |
Range |
500～3000 |
|
Span |
-16000～16000 |
|
|
E |
Range |
3000～4000 |
|
Span |
-16000～16000 |
|
|
F |
Range |
4000～10000 |
|
Span |
-16000～16000 |
|
|
G |
Range |
1～100 |
|
Span |
16000～30000 |
|
|
H |
Range |
100～500 |
|
Span |
16000～30000 |
|
|
I |
Range |
500～3000 |
|
Span |
16000～30000 |
|
|
J |
Range |
3000～4000 |
|
Span |
16000～30000 |
|
Range Limit
It can be adjusted arbitrarily within the upper and lower limits of the range.
It is recommended to choose a range code with the lowest possible range ratio to optimize performance characteristics. Zero Point Setting
The zero point and span can be adjusted to any value within the measurement range in the table, as long as: calibrated span ≥ minimum span
Installation Position Influence
Changes in the installation position parallel to the diaphragm surface will not cause zero drift. If the installation position changes more than 90° from the diaphragm surface, a zero offset within the range of <0.4kPa will occur, which can be corrected by adjusting the zero point. There is no span influence.
Output
Two-wire, 4mA～20mADC, optional HART digital communication output, selectable linear or square root output. Output signal limits: I min =3.9mA，I max =20.5mA
Response Time
The damping constant of the amplifier component is 0.1s ; the sensor time constant is 0.1s ~1.6s This depends on the measuring range and the range ratio. The additional adjustable time constant is: 0.1s～60s. The effect on non-linear outputs (such as square root function) depends on the function and can be calculated accordingly.
Warm-up time
<15s
Ambient temperature
-40 ℃～85℃
-20℃～65℃ with LCD display and fluoroelastomer seal Storage temperature/Transportation temperature
-50 ℃～85℃; -40℃～85℃ with LCD display Working pressure
Rated working pressure is divided into: 16MPa, 25MPa, 40MPa Three levels Static pressure limit
From 3.5kPa absolute pressure to rated pressure, the protection pressure can be more than 1.5 times the rated pressure, applied to both sides of the transmitter simultaneously. Unidirectional overload limit ：
Unidirectional overload can reach the rated pressure Electromagnetic Compatibility (EMC)
See the "Electromagnetic Compatibility Appendix" on the next page
- Installation
Power supply and load conditions
The power supply voltage is 24V， R ≤ (Us -12V)/I ma x k Ω where I ma x =2 3 m A
Maximum power supply voltage: 42VDC
Minimum power supply voltage: 12VDC, 15VDC (backlit LCD display) Digital communication load range: 250Ω～600Ω
Electrical connection
M20 × 1.5 Cable sealing buckle, terminals are suitable for 0.5 m m 2 ~ 2.5 m m 2 wires. Process connection
The process connection flange has NPT 1/4 and UNF 7/16″ inner threads at both ends.
- Physical specifications
Material
Measuring diaphragm: Stainless steel 316L
Diaphragm: Stainless steel 316L, Hastelloy C Process flange: Stainless steel 304
Nuts and bolts: Stainless steel (A4) Filling liquid: Silicone oil
Sealing ring: Nitrile rubber （ NB R ) , fluoroelastomer ( FK M ) , polytetrafluoroethylene （ PT F E ) Transmitter housing: Aluminum alloy material, epoxy resin coating on the surface
Housing sealing ring: Nitrile rubber (NBR) Nameplate: Stainless steel 304
Weight: 3.3kg (Without: LCD display, mounting bracket, process connection)
Housing protection level IP67
Electromagnetic Compatibility Appendix
|
Serial number |
Test item |
Basic standard |
Test conditions |
Performance level |
|
1 |
Radiation interference (housing) |
GB/T 9254-2008 Table 5 |
30MHz～1000MHz |
Qualified |
|
2 |
Conducted interference (DC power port) |
GB/T 9254-2008 Table 1 |
0.15MHz～30MHz |
Qualified |
|
3 |
Electrostatic discharge (ESD) immunity |
GB/T 17626.2-2006 |
4kV (contact) 8kV (air) |
B |
|
4 |
Radio frequency 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 |
Burst immunity |
GB/T 17626.4-2008 |
2kV(5/50ns,5kHz) |
B |
Note 1: A Performance Level Description: During testing, performance is normal within the limits of the technical specifications.
Note 2 : B Performance Level Description: During testing, functionality or performance is temporarily reduced or lost, but can recover automatically, without affecting the actual operating status, storage, or data.
Dimensions Unit: millimeters
Keywords:
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Contact Fax:0552-4070672
Company Website:www.sunmoon-china.com
Email:smsales@163.com
Address: No. 985, Xingzhong Road, High-tech Zone, Bengbu City, Anhui Province, China, Sun Moon Science and Technology Park
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