 
|
Working principle
|
| The Focbar (Intelligent) monocrystalline silicon pressure transmitter adopts the world's advanced monocrystalline silicon pressure sensor technology and patented packaging process, and has been carefully developed as an internationally leading technology ultra-high performance pressure transmitter. The monocrystalline silicon pressure sensor is located at the top of the metal body, away from the contact surface of the medium, to achieve mechanical and thermal isolation; The sensor lead integrated with glass sintering achieves high-strength electrical insulation with the metal substrate, improving the flexibility and ability to withstand transient voltage protection of electronic circuits. These innovative monocrystalline silicon pressure sensor packaging technologies ensure that the Focp (intelligent) monocrystalline silicon pressure transmitter can handle extreme chemical and mechanical loads with ease, while also possessing strong electromagnetic interference resistance, capable of handling harsh industrial environmental applications, making it a truly invisible instrument. |
|
Structural components -----------------------------------------------------------------------
|
 |
| 1. Front cover of header 2 Front cover lens 3. Header 4. Shell 5. Nameplate label 6. Explosion proof connector 7. Wiring terminal 8. Header back cover 9. Drain valve 10 Bolt 11. Clamp plate 12. Sensor sealing ring 13. Sensor 14. Nut 15. Welded pipe joint assembly |
|
Product Features
|
Advanced monocrystalline silicon pressure sensor technology and patented packaging process, carefully developed into an internationally leading high-performance pressure transmitter
◆ Dual membrane overload structure, capable of handling high overload tests with ease
A signal transmission module using integrated circuits and surface packaging technology, with a powerful 24 bit ADC to achieve high precision and fast response
The display module can rotate 355 °, and the button parameter operation function is friendly
The setting of key parameters does not affect the electrical protection level, making it safer and faster
◆ High performance Focbar monocrystalline silicon pressure transmitter, perfect combination of international leading technology and Chinese intelligent manufacturing
◆ Sturdy and high-quality stainless steel process flange, thick reinforced structure, indestructible, strong guarantee of high static pressure and high overload |
|
Product Parameters/Product Parameters ------------------------------------------
|
1. Main technical parameters
| name |
Monocrystalline silicon differential pressure transmitter |
| application |
Liquid, gas, steam |
| measuring range |
200pa-10Mpa |
| accuracy class |
± 0.075% range upper limit, optional ± 0.05% range upper limit |
| Supply Voltage |
24V DC |
| output signal |
4-20mA, 4-20mA+HART |
| operation temperature |
-40～85℃ |
| medium temperature |
-40～120℃ |
| DIAPHRAGM MATERIAL |
316L, Hastelloy C |
| protection grade |
IP67 |
|
Product Dimensions/Product Dimensions ---------------------------------------
|
|
|
Range and Range Limits/Range and Range Limits ----------------------------------
|
| Nominal range |
minimum range |
Lower Range Limit (LRL) |
Range upper limit (URL) |
Static pressure range |
One way high voltage end overload |
One way low voltage end overload |
| 6kPa |
200Pa |
-6kPa |
6kPa |
25MPa |
25MPa |
16MPa |
| 40kPa |
400Pa |
-40kPa |
40kPa |
40MPa |
25MPa |
16MPa |
| 250kPa |
2.5kPa |
-250kPa |
250kPa |
40MPa |
25MPa |
16MPa |
| 1MPa |
10kPa |
-500kPa |
1MPa |
40MPa |
25MPa |
16MPa |
| 3MPa |
30kPa |
-500kPa |
3MPa |
40MPa |
25MPa |
16MPa |
| 10MPa |
100kPa |
-500kPa |
10MPa |
40MPa |
25MPa |
16MPa |
| Requirements for setting high and low limit values: The low limit value (LRV) and high limit value (URV) should be taken within the upper and lower limits of the range. When | URV | ≥ | LRV |, | URV | ≥ minimum range must be met; When | URV | ≤ | LRV |, it is necessary to meet | LRV | ≥ minimum range |
|
| 1. Performance testing standards and benchmark conditions |
| Testing standards: GB/T28474/IEC60770； Reference conditions: range starting from zero; Silicone oil filling, 316L stainless steel isolation diaphragm, 4-20mA analog output, fine tune the end group to the set value |
| 2. Performance indicators |
The overall performance includes but is not limited to the comprehensive error of reference accuracy, environmental temperature influence, static pressure influence, and other influences
Typical accuracy: ± 0.075% range upper limit
Annual stability: ± 0.2% range upper limit/5 years |
| 3. Reference accuracy |
| According to standards and testing benchmark conditions, including linearity (BFSL), hysteresis, and repeatability. Calibration temperature: 20 ℃± 5 ℃ |
|
| Linear output accuracy |
TD ≤ 10 (Note 1) |
± 0.075% upper range limit |
Nominal range: 6kPa, 40kPa, 250kPa, 1MPa, 3MPa, 10MPa |
| 10<TD≤100 |
± 0.0075TD% upper range limit |
|
The square root output accuracy is 1.5 times the linear reference accuracy mentioned above
Note 1: TD (Turn down) refers to the range ratio. When | URV | ≥ | LRV |, TD=URL/| URV |. When | URV | ≤ | LRV |, TD=URL/｜LRV｜ |
| 4. Environmental temperature impact |
| Total impact within the range of -20-80 ℃ ± (0.1+0.1TD)% range upper limit |
| 5. Static pressure influence |
| Zero point impact: ± 0.15TD% range upper limit/10MPa, full-scale impact: ± 0.2% range upper limit/10MPa |
| 6. Power supply impact |
| When the supply voltage varies within 10.5/16.5-55VDC, the changes in zero point and range should not exceed ± 0.005% of the upper range limit/V |
| 7. Installation location impact |
| Installed at any position, with a maximum pressure not exceeding 400Pa, can be calibrated through the reset function |
| 8. Vibration impact |
| Tested according to GB/T1827.3/IEC61298-3,<0.1% upper range limit |
| 9. Output signal |
| Two line 4-20mA, user selectable linear output or square root output, digital process variables superimposed on the 4-20mA signal, suitable for any host that complies with the HART protocol |
|
Specification Parameters/Specification Parameters
|
| 1. Time indicator |
| Total damping time constant: equal to the sum of the damping time constants of electronic circuit components and sensing enclosures |
| Damping time of electronic circuit components: adjustable within the range of 0-100 seconds |
| Damping time of sensing membrane box (isolation sensing membrane and silicone oil filling liquid): ≤ 0.2S |
| Power on startup time after power outage: ≤ 6S |
| Data recovery to normal usage time: ≤ 31S |
|
| 2. Weight |
| Net weight: approximately 4kg (without installation bracket, process connection accessories) |
|
| 3. Environmental conditions |
| Net weight: approximately 4kg (without installation bracket, process connection accessories) |
|
| Operating temperature range: -40-85 ℃, integrated LCD display:- 20-70℃ |
| Storage environment temperature range: -40-110 ℃, integrated LCD display:- 40-85℃ |
| Temperature range of measuring medium: filled with silicone oil sensor: -40-120 ℃, filled with fluorine oil sensor:- 10-80℃ |
| Operating environment humidity range: 5-100% RH@40 ℃ |
| Protection level: IP67 |
Power Supply:
|
| project |
operation condition |
| Standard/Explosion proof type |
10.5-55VDC |
| HART communication protocol |
16.5-55VDC, with a load resistance of 250 Ω during communication |
| load resistance |
0-2119 Ω is the working state, 250-600 Ω |
| HART communication |
| Distance |
<1000 meters |
| power consumption |
≤ 500mW@24VDC ， 20.8mA |
|
Power supply and load conditions
|
 |
Installation and Use/Installation and Use
|
| 1. Installation dimension diagram of pipe bending bracket (B1) (unit: mm） |
 |
| 2. Installation dimension diagram of board bending bracket (B2) (unit: mm） |
 |
| 3. Installation dimension diagram of pipe mounted flat bracket (B3) (unit: mm） |
 |
