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Working principle:
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| The Focbar 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. |
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Structural components ----------------------------------------------
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| 1. Front cover of the meter head 2. Front cover lens 3. Meter head 4. Shell 5. Nameplate label 6. Explosion proof connector 7. Wiring terminal 8. Rear cover of the meter head 9. Sensor 10. Threaded connection |
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Product Features
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High accuracy and good stability. In addition to the imported original sensors that have been laser corrected, the comprehensive temperature drift and nonlinearity of the entire machine within the operating temperature range are finely compensated, resulting in low nonlinearity and good temperature stability within the operating temperature range.
Reliable mechanical protection IP65 and explosion-proof protection Exd Ⅱ CT6, suitable for various harsh environments.
◆ Can be used to measure viscous, crystalline, and corrosive media.
4mA~20mADC standard current signal output, two-wire operation, strong anti-interference ability with load.
Small size, light weight, easy to install, debug, maintain, and use. |
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Product Parameters/Product Parameters -------------------------------------------------
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1. Main technical parameters
| name |
Monocrystalline silicon pressure transmitter |
| application |
Pressure and liquid level measurement |
| measuring range |
1kpa-40Mpa |
| accuracy class |
± 0.075% range upper limit, optional ± 0.05% range upper limit |
| Supply Voltage |
24V DC |
| output signal |
4-20mA, 4-20mA+HART |
| DIAPHRAGM MATERIAL |
316L, Hastelloy C |
| Protection level |
IP67 |
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Product Dimensions
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Range and Range Limits/Range and Range Limits ----------------------------------------------
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| Nominal range |
Minimum range |
Lower Range Limit (LRL) |
Range upper limit (URL) |
overload |
| 6kpa |
1kpa |
-6kpa |
6kpa |
25Mpa |
| 40kpa |
2kpa |
-40kpa |
40kpa |
25Mpa |
| 250kpa |
12.5kpa |
-100kpa |
250kpa |
25Mpa |
| 1Mpa |
50kpa |
-100kpa |
1Mpa |
25Mpa |
| 3Mpa |
150kpa |
-0.1kpa |
3Mpa |
25Mpa |
| *10Mpa |
500kpa |
-0.1kpa |
10Mpa |
25Mpa |
| 40Mpa |
5kpa |
-0.1kpa |
40Mpa |
40Mpa |
The above measurement range can also be converted into units such as kg/cm2, Mpa, and kpa. Other measurement ranges can be provided upon request.
Requirements for setting high and low limits: The low limit value (LRV) and high limit value (URV) should be taken within the upper and lower limits of the range, with the minimum range being ≤ | URV-LRV | ≤ upper limit of the range |
| *DMP305X-TST-H is suitable for nominal range ≤ 10Mpa |
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| 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 |
| performance index |
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 |
| 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 |
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| Note 1: TD (Turn down) refers to the range ratio, TD=URL/｜URV-LRV｜ |
| Environmental temperature impact |
| Total impact within the range of -20-80 ℃ ± (0.1+0.1TD)% range upper limit |
| insulation resistance |
| Under reference conditions of ≥ 20M Ω, 100DVC |
| 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 |
| Installation location impact |
| Installed at any position, with a maximum pressure not exceeding 400Pa, can be calibrated through the reset function |
| Vibration impact |
| Tested according to GB/T1827.3/IEC61298-3,<0.1% upper range limit |
| 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 parameter/Specification parameter
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| 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 |
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| 2. Weight |
| Net weight: approximately 1.8kg (without installation bracket, process connection accessories) |
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| 3. Environmental conditions |
| Net weight: approximately 4kg (without installation bracket, process connection accessories) |
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| 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℃， |
| Operating environment humidity range: 5-100% RH@40 ℃ |
| Protection level: IP67 |
Power Supply/Power Supply ---------------------------------------------------------------------------
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| project |
Operating conditions |
| 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 |
| transmission distance |
<1000 meters |
| Power consumption |
≤ 500mW@24VDC ， 20.8mA |
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Power supply and load conditions
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Installation and Use/Installation and Use
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| 1. Installation dimension diagram of Focbar2201-H monocrystalline silicon pressure transmitter (unit: mm） |
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| 2. Installation dimension diagram of Focbar2201-S monocrystalline silicon pressure transmitter (unit: mm） |
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