pressure transmitterUsed to measure the liquid level, density, and pressure of liquids, gases, or vapors, and then convert them into 4-20mA DC signal output. ZN1151/3351GPIntelligent pressure transmitterIt can communicate with the HART handheld device for setting, monitoring, or forming an on-site monitoring system with the upper computer.
ZN1151/3351GP on-site adjustable intelligentpressure transmitterThis is a new product developed by our company based on on-site requirements. It can be operated without a manual controller and can be adjusted and configured on-site through button pressing.
1. Performance specifications
(Zero benchmark calibration range, under reference conditions, filled with silicone oil, 316 L stainless steel isolation diaphragm.)

1.1. Reference accuracy
1.1.1. Digital and intelligent: ± 0.1% calibration range
1.1.2. Simulation, linear: ± 0.2% calibration range
1.2. stability
1.2.1. Digital and intelligent: 6 months, ± 0.1% URL
1.2.2. Simulation, linear: 6 months, ± 0.2% URL
1.3. Environmental temperature impact
1.3.1. Numbers and Intelligence:
Zero point error: ± 0.2% URL/56 ℃
Overall error: ± (0.2% URL+0.18% calibration range)/56 ℃
1.3.2. Simulation, Linear
Zero point error: ± 0.5% URL/56 ℃
Overall error: ± (0.5% URL+0.5% calibration range)/56 ℃
1.4. vibration effect
In any axial direction, the vibration effect at 200Hz is ± 0.05% URL/g
1.5. Power supply impact
Less than ± 0.005% output range/volt.
1.6. Load impact:
There is no load impact unless there is a change in the power supply voltage.
1.7. Electromagnetic interference/radio frequency interference (EMI/RFI impact)
When the field strength reaches 30V/M from 20 to 1000MHz, the output drift is less than ± 0.1% of the range.

1.8. Installation location impact
The zero drift is at most ± 0.25kPa. All zero drift
All can be corrected; Has no impact on the measurement range.
2. Functional specifications
2.1. Measurement range: 0-0.125-41370KPa
2.2. Zero point and range
2.2.1. Digital and intelligent
It can be adjusted using the local range and zero buttons, or remotely using a HART controller
2.2.2. Simulation, linear
Range and zero point continuously adjustable
2.3. Zero point positive and negative transfer
When zero point negative shift occurs, the lower limit of the range must be greater than or equal to - URL; When zero point is shifted forward, the upper limit of the range must be less than or equal to+URL. The verification range must be greater than or equal to the minimum range.
2.4. output
Digital and intelligent:
4-20mA DC, users can choose linear or square root output. The digital process variables are superimposed on a 4-20mA signal and can be used by upper level computers using the HART protocol
Simulation, linear:
4-20mA DC, linear with process pressure.

◆ Selection method

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