Liquid 4-20mA Single Flange Diaphragm Pressure Transmitter
DescriptionLiquid 4-20mA Single Flange Diaphragm Pressure Transmitter
Single flange pressure transmitter is a new type of pressure
transmitter which is resistant to strong acid and alkali corrosion
such as hydrochloric acid, sulfuric acid, ammonia water, nitric
acid, NaOH, etc.Since the isolation diaphragm is in direct contact
with the liquid medium, there is no need to use a pressure guiding
tube to lead out the positive pressure side, so the liquid level,
pressure and density of the medium with high temperature, high
viscosity, easy crystallization, easy precipitation and strong
corrosion can be measured. It is converted into 4～20mA.DC signal
output
Parameter Liquid 4-20mA Single Flange Diaphragm Pressure Transmitter
| Output | Analog output: two –wire 4-20mADC |
| Digital output: two –wire 4-20mADC and superimposing variable
digital signal accord with HART |
| Power supply | supply voltage 24VDC |
| Limit load | Max load resistor Rmax in loop decided by the supply voltage, see
the below drawing. HART PROTOCOL require the load resistor not less
than 250Ω,not more than 600Ω |
| Communication distance | Max. 1.5Km, multi-address communication can connect 15 smart
transmitters Max. |
| Display | 4 digital display,5 digit LCD display, pointer type. |
| Explosion-proof | ExiaIICT5;explosion suppression type |
| Zero offset | Can positive transfer or negative transfer, but can not overstep
the utmost value |
| Temperature | ambient temperature -40-85℃(When choose LCD : -20-70℃) |
| Medium temperature | -40～104℃ |
| Static pressure and single side overpressure | 3.45KPa(absolute pressure)～31.2MPa(gauge pressure) |
| Relative humidity | 5～98%RH |
| Run-up time | less than 5 sec. |
| Capability change | Less than 0.16cm3 |
| Damp adjust | 0.20～25 second |
| Malfunction alarming | If occur malfunction, automatism diagnose function will output 3.9
or 21.0mA |
| Configuration protection | To avoid the datas are modified random, can utilize software or
protect switch lock the record data |
| Reference condition | zero is the lower limit and not offset, temperature 25℃,
Atmospheric pressure, 24VDC power, silicon oil , diaphragm 316L, data adjust range the same as the up
and lower limit of the range. |
| Accuracy | ±0.075～±0.2% |
| Stability | ≤0.2%URL/year |
| Tem. influence | ±(0.05%URL＋0.15%FS＋200Pa)20℃ |
| Static pressure influence | zero error 0.1URL/6.9Mpa; Zero error 0.1URL/1.7MPa |
| Vibration influence | withstand frequency 200Hz at any direction, arouse error ±0.05%URL |
| Power influence | ＜0.005%/V |
| Load influence | no load influence |
| Mounting position influence | about 250Pa zero offset, can be eliminate via calibration, no range
influence. |
| RF interference influence | drift is ±0.1%span in the condition of 30-1000MHz frequency and the
most field intensity 10V/m |
| wetted material | Diaphragm: 316LSS, Hastelloy , Monel or Tantalum Vent /drain valve:316LSS, Hastelloy , Monel or Tantalum Flange and joint : steel coated with cadmiumed ,galvanized steel,
316L SS, Hastelloy O-ring: Fluorin rubber |
| other material | Filled: silicon oil Bolt: galvanized steel Electric housing: low copper and aluminium alloy Cover O-ring: NBR Coating: polyester epoxy resin |
| Pressure port | Flange connection: 1/4-18NPT Joint pressure port:1/2-14NPT |
| Electrical connection | Lead tube connection: M20X1.5,1/2-14NPT |
| Weight | 5kg(no include option parts) |
Features Liquid 4-20mA Single Flange Diaphragm Pressure Transmitter
Super performance, use to measure pressure, differential pressure
and temperature..
Standard 4～20mA,RS-485 communication interface
Support upgrade of basic scene control technique
Little temperature effect
Overload can reach 2 times
Applications Liquid 4-20mA Single Flange Diaphragm Pressure Transmitter
Compatible with 316LSS,noncorrosive liquids.
Apply in Petroleum industry, chemical industry, electric power,
metallurgy, hydrology etc process control.
Ordering Information Liquid 4-20mA Single Flange Diaphragm Pressure Transmitter
| UC800 | Differential pressure transmitter |
| No. | Pressure range |
| 4 | 0～37.4KPa |
| 5 | 0～186.8KPa |
| 6 | 0～690KPa |
| 7 | 0～2068KPa |
| No. | Output |
| B | 4-20mA with HART protocol |
| No. | Material structure |
Pressure chamber | Bleed valve | Isolation diaphragm | Filling liquid |
| 2 2 | 316LSST | 316LSST | 316LSST | Silicone oil |
| 2 3 | 316LSST | 316LSST | Hastelloy C-276 |
| 2 4 | 316LSST | 316LSST | Monel alloy |
| 2 5 | 316LSST | 316LSST | Tantalum |
| 3 3 | Hastelloy C | Hastelloy C | Hastelloy C-276 |
| 3 5 | Hastelloy C | Hastelloy C | Tantalum |
| 4 4 | Monel alloy | Monel alloy | Monel alloy |
| 7 3 | 316LSST | Hastelloy C | Hastelloy C - 276 |
| 2 A | 316LSST | 316LSST | 316LSST | Fluorine oil |
| 2 B | 316LSST | 316LSST | Hastelloy C - 276 |
| 3 B | Hastelloy C | Hastelloy C | Hastelloy C - 276 |
| 2 D | 316LSST | 316LSST | Tantalum |
| 3 D | Hastelloy C | Hastelloy C | Tantalum |
| 7 B | 316LSST | Hastelloy C | Hastelloy C - 276 |
| | No. | Item optional |
| T | 1/2NPT (Female) 316 L SST |
| O | 1/4NPT (Female) 316 L SST |
| No. | Item optional |
| M7 | Linear indicator 0~100 |
| Bl | Pipe mounting curved bracket (D=51mm) |
| B2 | Plate mounting bracket |
