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LPT-F Diaphragm Pressure Transmitter
● High-performance monocrystalline silicon core
●24-bit high-precision ADC
● Core and Circuit Dual Compensation
● Can be configured via HART handheld device
● Suitable for level measurement in open containers
● Output damping is adjustable
● Equipped with RS485 functionality (please specify when ordering)
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Product Description
Product Overview Product overview
The LPT-F series diaphragm pressure transmitters feature a microprocessor-based, modular circuit design that delivers excellent anti-interference performance. Equipped with a built-in temperature sensor for transmitter compensation, these devices enhance measurement accuracy while minimizing temperature drift, ensuring long-term stability and high reliability, along with robust self-diagnostic capabilities. Users can easily calibrate, configure, and set up the transmitters using a HART-compatible handheld communicator. The interface also includes function sections with differentiated password-protected access levels, allowing users to conveniently customize settings. These transmitters are widely used in industries such as chemical processing, metallurgy, water resources, power generation, and petroleum applications.
Performance metrics TECHNICAL PARAMETERS
| Measuring medium | Gas, liquid, vapor | ||
| Measurement range | Minimum range (kPa) | Measurement range and sensor limit values (kPa) | |
| Maximum range (URL) | Minimum Range (LRL) | ||
| 1.0 | 6.0 | -6.0 | |
| 4.0 | 40 | -40 | |
| 10.0 | 100 | -100 | |
| 12.5 | 250 | -100 | |
| 25.0 | 500 | -100 | |
| 25.0 | 1000 | -100 | |
| 87.5 | 3500 | -100 | |
| Measurement range ratio: | 40:1 | ||
| Accuracy | Class 0.2, Class 0.5 (including linearity, hysteresis, and repeatability) | ||
| Impact of the range ratio: | Class 0.2 | When the range ratio is set between 1:1 and 10:1, the calibration accuracy is ±0.20% of the selected range. | |
| When the range ratio exceeds 10:1, it is ±[0.03 × range ratio - 0.1]%; | |||
| Stability | Class 0.2 | The error over 36 months is ±0.25% of the full scale. | |
| Temperature Influence | Class 0.2 | Zero-point or span error is ±0.25% of the full scale, per 28°C. | |
| Power supply impact | Less than ±0.005%/V of the calibration range | ||
| Vibration Impact | Less than ±0.05%/g of the full scale | ||
| Installation Impact | Zero drift is no more than 0.25 kPa, and this error can be eliminated by zero adjustment without affecting the measurement range. | ||
| Hydrostatic Pressure Impact | Zero-point impact | ±0.1% URL/10 MPa | |
| Range Influence | ±0.2% URL/10 MPa | ||
| Output signal | 4-20mA + HART (can also feature RS485) | ||
| Power supply | 15-36VDC | ||
| Ambient temperature: | -40°C to 85°C | ||
| Medium temperature | -40°C to 120°C | ||
| Storage temperature | -40°C to 85°C | ||
| Display | 7-digit LCD display | ||
| Protection Level | IP65 | ||
| Explosion-proof rating | Exd IIC T6Gb | ||
External dimensions APPEARANCE OF SIZE
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Installation Requirements INSTALLATION
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Tianjin Ling Yu Technology Co., Ltd.
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