Differential pressure transmitter

Product Description:

The 1151/3351DP differential pressure transmitter is used to measure the liquid level, density, and pressure of liquids, gases, or vapors, and then convert them into 4-20mA DC signal output. The intelligent type can communicate with the HART handheld device for setting, monitoring, or forming an on-site monitoring system with the upper computer. The 1151/3351DP on-site adjustable intelligent differential pressure transmitter is a new product developed by our company according to on-site requirements. It can be operated without a manual controller and can achieve on-site zero adjustment, configuration, and other operations 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		1.7. Load impact:
1.1.1. Digital and intelligent: ± 0.1% calibration range		There is no load impact unless there is a change in the power supply voltage.
1.1.2. Simulation, linear: ± 0.2% calibration range		1.8. Electromagnetic interference/radio frequency interference (EMI/RFI impact)
1.2. Stability		When the field strength reaches 30V/M from 20 to 1000MHz,
1.2.1. Digital and intelligent: 6 months, ± 0.1% URL		Output drift is less than ± 0.1% of the range.
1.2.2. Simulation, linear: 6 months, ± 0.2% URL		1.9. Installation location impact
1.3. Environmental temperature impact		The zero drift is at most ± 0.25kPa. All zero drift can be corrected; Has no impact on the measurement range.
1.3.1. Digital and intelligent		2. Functional specifications
Zero point error: ± 0.2% URL/56 ℃		2.1. Measurement range: Differential pressure: 0-1.3~6890KPa
Overall error: ± (0.2% URL+0.18% calibration range)/56 ℃		Static pressure: 4, 10, 14MPa
1.3.2. Simulation, Linear		2.2. Zero point and range
Zero point error: ± 0.5% URL/56 ℃		2.2.1. Digital and Intelligent:
Overall error: ± (0.5% URL+0.5% calibration range)/56 ℃		It can be adjusted using the local range and zero buttons, or remotely using a HART controller.
1.4. Static pressure effect		2.2.2. Simulation and linearity:
1.4.1. Zero point:		The range and zero point are continuously adjustable.
For ranges 4 to 8, the URL is ± 0.2% at 13790kPa; The other ranges are ± 0.25% URL. Zero point error can be corrected online by resetting to zero.		2.3. Zero point positive and negative transfer
1.4.2. Range:		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. Verify that the range is greater than or equal to the small range.
Can be corrected to ± 0.25% output reading/6895kPa, for range 3, can be corrected to ± 0.5% output reading/6895kPa		2.4. Output
1.5. Vibration effect		Digital and intelligent:
In any axial direction, the vibration effect at 200Hz is ± 0.05% URL/g		4-20mA DC, users can choose linear or square root output, and digital process variables are superimposed on the 4-20mA DC signal, which can be used by upper computers using the HART protocol.
1.6. Power supply impact		Simulation, linear:
Less than ± 0.005% output range/volt.		4-20mA DC, linear with process pressure.

◆ Selection method

1151/3351DP	Differential pressure transmitter
	Code	Range KPa
	3	0-1.3～7.5
	4	0-6.2～37.4
	5	0-31.1～186.8
	6	0-117～690
	7	0-345～2068
	8	0-1170～6890
		Code	Output
		E	4-20mA
		S	Intelligent
			Code	Structural materials
				Flanges and fittings		Exhaust/Drain Valve	Isolation Diaphragm	Fill with liquid
			22	316 stainless steel		316 stainless steel	316 stainless steel	Silicone oil
			23	316 stainless steel		316 stainless steel	Hastelloy C
			24	316 stainless steel		316 stainless steel	Monel
			25	316 stainless steel		316 stainless steel	Tantalum
			33	Hastelloy C		Hastelloy C	Hastelloy C
			35	Hastelloy C		Hastelloy C	Tantalum
			44	Monel		Monel	Monel
				Code	High working pressure MPa
				B-	4
				C-	10
				D-	14
					Code	Option
					M1	0-100% linear indicator table
					M2	LED display table
					M3	LCD display table
					B1	Pipe bending bracket
					B2	Board mounted bending bracket
					B3	Pipe mounted flat bracket
					D1	The side relief valve is located at the upper part of the pressure chamber
					D2	The side relief valve is located at the lower part of the pressure chamber
					No note	1/2NPT taper pipe threaded joint
					C2	T-shaped threaded joint M20 × 1.5, with a ball cone connector welded with a rear end of a Ø 14 pressure pipe
					d	Explosion proof type d Ⅱ BT4
					i	Intrinsic safety type ia Ⅱ CT6
					J	Flow transmitter 4-20mA square root output
					s	Stainless steel three valve group