HX3351 series capacitors provide an overview of smart pressure transmitter 3351 Series Capacitive Smart Pressure Transmitter is Huaxing Instrument Research Institute, Jinan Hi-tech Development Zone in manufacturing high-precision intelligent instrumentation. Sensor is the use of the introduction of foreign advanced technology to produce high-precision miniaturization of smart sensors, on the principle of using a direct digital conversion circuit capacitor instead of analog signal amplification circuit and A / D converter circuit, using digital technology to compensate for temperature, static pressure were compensation to improve the measurement accuracy, reduce the temperature drift. With long-term stability, high reliability, strong self-diagnostic ability. Its high performance and low cost, the sensor market and become a mainstream product. 3351 Smart Transmitter for liquids, gases and steam medium flow, level and pressure (differential pressure, gauge pressure, absolute pressure) measurements. 3351 Smart Transmitter with stable performance in metal capacitive sensing element proven, high reliability and strong anti-overload, etc., while also increasing the compensation and advanced digital communications. This makes the 3351 Series Intelligent Transmitter become widely used high-precision smart transmitter. The transmitter is available through the Institute HART232 configuration / debug system or HART375 handheld to complete the test, configuration, operation calibration and other functions can also be compatible with ROSEMOUNT275 type Communicator. From the control room, the transmitter circuit installation site or any of terminals communicate with the transmitter via the handheld or test equipment, perform remote debugging can also be located at the top of the transmitter zero and span buttons conducted on magnetic to span adjustment. It should be noted during remote communication: between terminals and power resistors must not be less than 250. Two characteristics thanks to the microprocessor leaving flexibility increases, enhancements; has a strong self-diagnostic capabilities; cover a wide range 0-0.2Kpa-41.37Mpa; accuracy of better than 0.1, better than 40:1 turndown ratio ; zero and span adjustments affect each other; both remote and local scale, zero adjustment; wire system, in line with HART protocol digital communication can be carried out without interruption and ROSEMOUNT275 type analog outputs; with non-volatile memory within the sensor; stable performance Well, high precision, adjustable damping, anti unidirectional overload strong; no mechanical transmission parts, less maintenance, strong earthquake; Show header can be rotated 90 ° for easy on-site observation; All common parts, sensors and electronic board Mutual change does not affect the transmitter characteristics, easier to maintain; diaphragm material contact with the media, explosion-proof housing structure; Three Model Specifications Model Type HX3351GP transmitter differential pressure transmitter pressure transmitter HX3351DP Code Range 3 0 - 0.2- 7.0Kpa (0-20-715mmH20) 4 0-1.0-37.4Kpa (0-96-3810mmH20) 5 0-4.7-186.8Kpa (0-477-19050mmH20) 6 0-17.3-690Kpa (0-0.18-7Kgf / cm) 7 0-51.7-2068Kpa (0-0.525-21Kgf/cm) 8 0-172.3-6890Kpa (0-1.75-70Kgf/cm) 9 0-517-20680Kpa (0-5.25-210Kgf/cm) 0 0 - 1035-41370Kpa (0-10.55-422Kgf/cm) code output EJ linear output 4-20mADC + HART signal is the square root of 4-20mADC + HART output signal Code structural materials flanged joints drain / vent valve diaphragm fill fluid 22 316 stainless steel 316 stainless steel 316 stainless steel 316 stainless steel silicone 23,316 Hastelloy C 24 316 stainless steel 316 stainless steel Monel 316 25 316 33 Tantalum Hastelloy C Hastelloy C Hastelloy C 35 Hastelloy C Hastelloy C Tantalum 44 Monel hormones are hormones Cornell four technical indicators using object: liquid, gas or steam output signal :4-20mA DC output, superimposed HART digital signal (two-wire) Power: External power supply 24VDC (power supply range 12V-45V) Temperature Range: Medium temperature: -40-104 ℃ Storage temperature: -40-85 ℃ machine working temperature: -40-85 ℃ -20-70 ℃ relative humidity :0-100%