Products
High static differential pressure transmitter is used to measure the level, flow and pressure of liquid, gas or steam under high working pressure environment, and then converted into 4～20mA DC signal output.SK1151/3351HP intelligent type can communicate with HART hand manipulator, through which to set, monitor or form a field monitoring system with the upper computer.
1. Performance specifications
(Zero reference calibration range, reference conditions, silicone oil filled, 316 L stainless steel isolation diaphragm.)
1.1. Reference accuracy
1.1.1 digital, intelligent: ± 0.1% calibration range
1.1.2. analog, linear: ± 0.2% of the calibration range
1.2. Stability
1.5.1. Digital, intelligent: 6 months, ±0.1% URL
1.5.2. Analog, linear: 6 months, ±0.2%URL
1.3. Ambient temperature effects
1.3.1. digital, intelligent:
Zero error: ±0.2%URL/56°C
Overall error: ±(0.2%URL+0.18% calibration range)/56℃
1.3.2. Analog, linear
Zero error: ±0.5%URL/56°C
Overall error: ±(0.5%URL+0.5% calibration range)/56℃
1.4. Static pressure effects
1.4.1. Zero Point
At a static pressure of 31027kPa, ±0.2%URL. Zero point error can be corrected online by zeroing.
1.4.2. Range
Correctable to ±0.25% of output reading/6895kPa.
1.5. Vibration Effects
Vibration effects are ±0.05%URL/g at 200Hz on any axis.
1.6. Power Impact
Less than ±0.005% output range/volt.
1.7. Load Impact:
No load effects unless there is a change in supply voltage.
1.8. Electromagnetic Interference/Radio Frequency Interference (EMI/RFI effects)
Output drift is less than ±0.1% of range from 20 to 1000 MHz with field strengths up to 30 V/M.
1.9 Mounting position effects
Zero drift up to ±0.25kPa All zero drifts can be corrected for; no effect on range.
2. Functional Specifications
2.1 Measuring range: Differential pressure: 0-1.3～6890KPa
Static pressure: 25, 32MPa
2.2 Zero and range
2.2.1. digital, intelligent: adjustable with the range and zero button of the machine, or adjustable with HART hand manipulator.
2.2.2 Analog, linear: range and zero point are continuously adjustable.
2.3 Positive and negative zero migration
For negative zero migration, the lower range limit must be greater than or equal to -URL; for positive zero migration, the upper range limit must be less than or equal to +URL. calibration range is greater than or equal to the lower range.
2.4. Outputs
Digital, Intelligent:
4～20mA DC, user selectable linear or square root output, digital process variable superimposed on 4～20mA DC signal, available for upper computer using HART protocol.
Analog, linear:
4～20mA DC, linear with process pressure.
2.5. Damping time constant
Digital, Intelligent: Time constant adjustable in 0.1 second increments from as little as 16.0 seconds.
Analog, linear: adjustable time constant from as little as 1.67 seconds.
