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HM3051 Intellectual Differential pressure transducer
HM3051 Intellectual / non -intellectual differential pressure transducer is a new type of instrument that we researched and developed according to internationally state – of – the – art technology and incorporating with many domestic technologies。 This instrument adopts micro – processing technology for temperature characteristic and non – linear compensation to greatly enhance the instrument temperature – measuring accuracy, to improve temperature characteristic, and to expand the measuring scale ratio, which may be added with intellectual function to further meet the requirements of high reliability and high stability of the instrument on the industrial sites。 Adoption of digital technology in the capacitor – type pressure / differential pressure transducer may not only ensure high reliability of the instrument and the other superior performance, but also realize remote digital connection between the intellectual instrument and the control room。 You may remotely enquire or make a real–time configuration from the control room。 The sensitive elements of this intellectual transducer are same as those of general HM1151 series of capacitor – type transducer。 Likewise, it features good stability and reliability。
Features of Product
Application of Product
押庄龙虎The intellectual PCB is provided with advanced IC and SMT technology to integrate the converting circuit, processing circuit on one circuit。 The micro – processor of the transducer controls the A / D and D / A converting module。 Meanwhile, it also performs digital communication and self – diagnosis function。 When working, the micro – processor controls the A / D converting module for sampling conversion of the analog signals from the sensitive elements and converts them into digital signal so that the micro – processor can process the digital signal including signal linearization, temperature compensation, engineering unit conversion etc。 The micro – processor may also perform the characterization of sensor, measuring scale, damping time, and the other functions。 E2PROM can memorize all the configurations and micro – adjustable parameters。 Because a memory is Non-Volatile Memory (NVM), the parameters memorized will not be lost in case of power failure。 Use PC working station or personal digital assistant (PDA) to configure and test the parameters or perform communication on any upper system supporting HART protocol。 HART protocol uses industrial standard BELL202 frequency shift keying (FSK) technology to realize communication with the 1200HZ2200HZ digital signals overlapped on 4 ~ 20mA。 The frequency signal at the time of communication will not disturb the process signal。 This intellectual capacitor – type transducer may perform online real – time diagnosis。 The transducer has a presetting value of 3。9mA in the factory before delivery if it has 21mA or 3。9mA output。
• • • Features of Product • • •
☆ High accuracy, good stability
☆ Compact structure, light weight, solid and vibration resistant
☆ Good compatibility, compatible with the products in accordance with HART protocol made by the other companies
☆ Support the user to use handheld unit 272 / 275 of PC for commissioning of software and for real – time instrument configuration during the instrument is running.
☆ May perform processing of intellectual linearization for pressure signal to ensure higher accuracy of measurement.
HM3051 Intellectual Differential pressure transducer
• • • Functional Indicators • • •
Medium to be measured:
Liquid, gas, or vapor
Range of measurement:
0 ~ 0.125KPa ~ 40MPa
4 ~ 20mA (expressed with a code E)
4 ~ 20mA, overlapped with HART digital signal (expressed with a code S)
Power supply of energization
12 ~ 45V DC (24V DC generally)
RL ≤50 (VS – 12) Ω
Optional pointer type gauge and LCD
Explosion – proof:
a。 Explosion – isolating type d II BT4
b。 Intrinsically safe type in II CT6
押庄龙虎Measuring scale and zero point:
Externally and continuously adjustable
Positive and negative immigration:
押庄龙虎The lower and upper limit of the scale shall not exceed the scale limit after positive and negative immigration.
Maximum positive immigration: 500% of the minimum measuring scale
Maximum negative immigration: 600% of the minimum measuring scale
Range of temperature:
The range of operating temperature for the amplifier: -29 ~ +93℃
The measuring element filled with silicon oil: : -40 ~ +104℃
Flange –type transducer filled with high – temperature silicon oil: : +15 ~ +315℃; that filled with general silicon oil: : -40 ~ +150℃
Static pressure and overloading pressure:
押庄龙虎4, 10, 25, 32MPa
Relative humidity (RH) 0 ~ 100%
Volume intake capacity:
Damping (step response):
Continuously adjustable, between 0.2s ~ 1.67s generally when filled with silicon oil.
2s, preheating is unnecessary.
± 0.1% FS; ± 0.25% FS; ± 0.5% FS
None (≤ 0.1%)
Not exceeding the absolute value of the basic tolerance for the maximum scale within six months.
押庄龙虎Influence of temperature:
Zero position tolerance is ± 0.1% / 55℃, the total tolerance is ± 0.2% / 55℃.
Influence of vibration:
On the any axial direction, the tolerance is ± 0.05% / g of the upper limit of the measuring range when the frequency of vibration is 200Hz.
Influence of power supply:
Less than 0。005% / V of the scale output
Influence of load:
The load has no influence to it if the power supply is stable.
Influence of installing position:
0.24KPa zero point tolerance may be generated, as a maximum, but it may be corrective, without influence to the measuring scale.
Isolating membrane: 316LSST, Hastelloy alloy C, MONEL, or tantalum.
Gas exhaust / liquid discharging valve: 316LSST, Hastelloy alloy C, MONEL
押庄龙虎Flange and joint: Electroplated carbon steel, 316LSST, Hastelloy alloy C, or MONEL
押庄龙虎O – ring contacting medium: NBR, fluorubber
Liquid filled: Silicon oil or inertia oil
Bolt: Electroplated carbon steel
Enclosure of electronic parts: Low – copper aluminum alloy
Pressure – leading connecting part:
The connecting screw hole on the pressurized vessel or chamber is 1 / 4 ~ 18NPT, the connecting screw hole on the pressure – leading joint is 1 / 2 ~ 14NPT.
Connecting hole of the signal wire:
G1 / 2
Approximately 3.5kg (excluding accessories)
The flanged joints, gas exhaust valves and liquid discharging valves and one book of instruction manual have been provided for all the variants in the factory before delivery.
Instructions for Placing an Order