Xi'an Shelok Instruments Technology Co., Ltd.
Dedicate to standard instruments.
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Capacitive pressure transmitter combines international advanced digital technology, and adopts digital circuit instead of analog signal amplifying circuit and A/D conversion circuit to improve measurement accuracy. It adopts standardized installation structure design, easy to install and use, sensitive diaphragm has unidirectional overload protection capability, the highest pressure resistance reaches 320bar, with high reliability and long-term stability. Capacitive pressure transmitters are available in gauge, absolute and differential pressure versions.
Capacitive transmitters are built with high-performance digital circuits. They are designed for RF, electromagnetic interference, and surge voltage conditions. They are characterized by strong anti-interference ability, wide power supply range, and polarity protection. They conform to IEC and CE (EMC). standard. Anti-radio frequency and electromagnetic interference; intelligent digital temperature compensation circuit stores the calibration value corresponding to temperature change on the chip. When the sensor is affected by temperature, it can automatically compensate, solve the temperature drift phenomenon of the sensor, improve the measurement accuracy and environmental adaptability of the sensor.
| Measuring medium | gas,air | Signal output | 4~20mA,HART |
| Stability | ± 0.1 URL | Accuracy | ±0.1% URL,±0.2% URL |
| Explosion-proof grade | Exia II CT6,Exd II BT5 | Ingress protection | IP65 |
| Measuring range | 0-1.3~7.5kPa,0-6.2~37.4kPa,0-31~186.8kPa,0-117~690kPa,0-345~2068kPa,0-1170~6890kPa,0-3480~20680kPa,0-6890~41370kPa | ||
| Power supply | 24VDC (12VDC~45VDC) Explosion-proof type: 12~28VDC | ||
| Working temperature | -40~+85°C (without LCD head) -30~+60°C (with LCD head) | ||
| Storage temperature | -40~+100°C (without LCD head) -40~+70°C (with LCD head) | ||
| Temperature effect | ± (0.2% URL + 0.18% test range) / 56 ° C | ||
| Power supply impact | less than 0.0059%/V of the output range | ||
| Load impact | Without unless supply voltage changes | ||
| Vibration effect | The vibration effect at 200 Hz in any axial direction is ±0.05% URL/g | ||
| EMI/RFI effect | From 20 to 1000MHz, the output drift is less than ±0.1% of range when the field strength reaches 30V/M | ||
| Installation position impact | Zero drift is ±0.25kPa maximum, all zero drift can be corrected; influence on range blocking | ||
| Zero positive and negative transitions: |
When zero migration is negative, the lower limit of the range must be greater than or equal to -URL; When the zero point is being migrated, the range up and down must be less than or equal to +URL. The calibration range must be greater than or equal to the minimum range Zero and span can be adjusted with the local range and zero button, or remotely adjusted with a HART handheld |
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| Static Pressure and Overvoltage Limits | Adding 0 to 13.79 MPa pressure on either side of the transmitter will not cause damage. Meets performance specifications when operating from 0 kPa to the upper range of the transmitter's range | ||
| Damping time constant | The time constant is adjustable, in 0.1 second increments, from a minimum of 16.0 seconds | ||