KPT1000-DP Monocrystalline Silicon Intelligent Differential
Pressure Transmitter
1.Introduction
The KPT1000-DP single crystal silicon differential pressure
transmitter uses a single crystal silicon sensor chip made of
advanced German MEMS technology, a double diaphragm structure, and
exquisite production technology to achieve high precision and
ultra-high stability of the product. The embedded intelligent
signal processing module achieves the perfect combination of
pressure and temperature compensation, providing reliable
measurement accuracy and excellent long-term stability under a wide
range of static pressure and temperature changes.
The KPT1000-DP single crystal silicon differential pressure
transmitter can be used to measure the liquid level, density, and
pressure of liquid, gas, or steam, and convert it into a 4-20mA DC
(superimposed HART communication) current signal output;
Remote and local parameter setting function configuration is
realized through Hart or RS485 communication and panel buttons.
2.Features
- High precision level: German high-precision single crystal silicon
sensor chip, accuracy ≤ ±0.05%.
- Strong load resistance: double overload protection diaphragm
design, single overpressure can reach 42MPa.
- Excellent environmental adaptability: intelligent static pressure
compensation and temperature compensation eliminate the influence
of temperature, static pressure and overload on the transmitter,
and minimize the comprehensive test error on site.
- Excellent long-term stability: stability can be maintained at
0.1FS%/3 years.
- Flexible remote assistance debugging function: remote and local
parameter setting function configuration is realized through Hart
or RS485 communication and panel buttons.
3.Applications
- Petroleum/Chemical/Fossil: Matched with throttling devices, it
provides accurate flow measurement of pipeline and tank pressure
and liquid level.
- Electricity/City Gas: Places that require high stability and high
precision pressure, flow, and liquid level measurement.
- Pulp/Papermaking: Used for furnace pressure, negative pressure
measurement and other places that require high stability and high
precision measurement.
- Steel/Nonferrous Metals/Ceramics: Used for pressure, flow, and
liquid level measurement places that require chemical resistance
and corrosion resistance.
- Mechanical Equipment/Shipbuilding: Used for places that require
stable measurement under strict control of pressure, flow, liquid
level and other indicators.
4.Technical Parameters
| Model | KPT1000-DP high-precision differential pressure transmitter |
| Measurement medium | Measures the pressure of liquid, gas or steam |
| Measurement type | Differential pressure measurement, absolute pressure measurement |
| Output signal | 4~20mA+HART protocol digital signal RS485 serial port signal |
| Measurement range | Range code | 0B | 0C | 0E | 0F | 0G |
| Range | (0~0.6)KPa~6KPa | (0~2)KPa~40KPa | (0~2.5)KPa~250KPa | (0~10)KPa~1MPa | (0~30)KPa~3MPa |
| Recommended compression ratio | 10:1 | 20:1 | 100:1 | 100:1 | 100:1 |
| Reference accuracy | ±0.05% | If TD＞10 (TD=maximum range/adjustment range), then: | ±(0.005*TD)% | If the range is 0B product, TD＞6, then: | / |
| ±0.075% | ±(0.0075*TD)% | ±(0.125*TD)% |
| ±0.1% | ±(0.01*TD)% | ±(0.166*TD)% |
| Ambient temperature effect | The total impact at (-25~+65)℃ is: ±(0.15*TD+0.05)%*Span The total impact at (-40~-25)℃ and (+65~+85)℃ is: ±(0.2*TD+0.05)%*Span |
| Overpressure effect | ±0.1%*Span |
| Static pressure effect | ±(0.05%URL+0.075%Span)/10MPa |
| Long-term stability | ±0.15%URL/10 years |
| Power supply effect | ±0.001%/10V(12~36)VDC, negligible |
| Range limit | It can be adjusted arbitrarily within the upper and lower limits of
the range. It is recommended to select a range code with the lowest
possible range ratio to optimize performance characteristics. |
| Zero setting | Calibration range ≥ Minimum range |
| Installation position effect | The change of the installation position parallel to the diaphragm
surface will not cause zero point influence. If the installation
position is not parallel to the diaphragm surface, it can be
eliminated by calibration. No influence on the range |
| Alarm current | Offline | 3.6mA |
| Online | 21mA |
| Insulation resistance | 100MΩ or more to ground (DC 500V) |
| Insulation strength | To ground AC 500V 50/60Hz, 1 minute |
| Response time | The damping constant of the amplifier component is 0.1S, and the
sensor time constant is: (0.1~1.6)S, depending on the range and
range ratio. The additional adjustable time constant is: (0.1~60)S.
The impact on nonlinear output (such as square root function)
depends on this function and can be calculated accordingly. |
| Ambient temperature | -40~+85℃ With display: -20~+65℃ |
| Storage temperature | -40~+125℃ |
| storage temperature | -40~+85℃ With display: -20~+65℃ |
| Working pressure (silicone oil) | 16MPa 25MPa 42MPa three levels |
| Static pressure limit | From 3.5KPa absolute pressure to rated pressure, the protection
pressure can be greater than 1.5 times the rated pressure and
applied to both sides of the transmitter at the same time |
| Isolation diaphragm | Stainless steel 316L,Hastelloy C-276,Tantalum,Gold plated |
| Process connection material | Stainless steel 304, 316 optional |
| Nuts and bolts | Stainless steel (A2-70), galvanized carbon steel (12.8) |
| Transmitter housing | Aluminum alloy + epoxy resin (surface spraying) Stainless steel |
| Sealing ring | Nitrile-Butadiene Rubber(NBR),Fluorinated
Rubber(FKM),Polytetrafluoroethylene (PTFE) |
| Filling | Silicone oil, edible oil, FL oil |
| Process connection | Both ends of the process connection flange have NPT1/4 and UNF7/16
internal threads |
| Protection level | IP65, IP67(explosion-proof) |
| Weight | 2.6Kg (without mounting bracket, process connection accessories) |
Power supply and load conditions:
5.Wiring
| ① | + | Power supply and HART digital communication output terminals |
| ② | - |
| ② | - | External indicator (ammeter) wiring terminals |
| ③ | + |
6.Dimensions
7.Support and Services
Our Precision Pressure Sensor product is backed by comprehensive
technical support and services to ensure that you have the best
experience possible. Our team of experts is available to answer any
questions you may have about the product, from installation to
operation. We also offer maintenance and repair services to keep
your sensor functioning optimally. In addition, we provide
calibration and customization services to meet your specific needs.
Trust us to provide the support and services you need to make the
most of your Precision Pressure Sensor.
8.Packing and Shipping
Product Packaging:
- 1 Precision Pressure Sensor
- User Manual
- Mounting hardware
- Protective foam padding
Shipping:
- Ships within 5-12 business days
- Free standard shipping
- Expedited shipping available for an additional fee
- Tracking number provided
