LM04X Series Submersible Deep Well Level Gauge

Product Features

◆Full welding process, durable and long-lasting;
◆Wide measurement range: 0～300m～500mH2O；
◆316L stainless steel isolation diaphragm, integrated design;
◆Lightning protection, compliant with IEC61000-4-5/Level-4 standard.

Product Description

LM04X series submersible deep well level gauge is an integrated product based on the principle that the static pressure of the measured liquid is proportional to the height of the liquid. It adopts the piezoresistive effect of diffused silicon or ceramic sensitive elements to convert static pressure into electrical signals. Cooperating with a dedicated digital circuit, after signal processing such as signal amplification, linear compensation, anti-interference, and surge protection, it outputs industrial standard signals.

Product Application

◆Waterworks, chemical plants
◆Wastewater treatment
◆Deep wells, dams
◆Flood control, irrigation

Technical Parameters

Measurement Range	0…200…500mH2O
Pressure Type	Gage pressure(G);
	Sealed gauge pressure（S）;
	Absolute pressure（A）
Output Signal	4…20mA; RS485
Input Voltage	8…30V DC; 5…8VDC; 3.3VDC
Accuracy Class	0.1%FS	0.2%FS	0.5%FS
Zero Drift	0.01%FS/℃	0.02%FS/℃	0.05%FS/℃
Sensitivity Drift	0.01%FS/℃	0.02%FS/℃	0.05%FS/℃
Compensation Temperature	-10…70℃
Operating Temperature	-20～+85℃
Storage Temperature	-40～+125℃
Long-Term Stability	≤0.2±%FS/Year; ≤0.5±%FS/Year
Response Time	＜1ms
Overload Capacity	200%
Load Resistance	R=(U-12.5)/0.02-RD
Measuring Medium	Corrosive media compatible with 316L
Diaphragm Material	316L; Tantalum; C-276; TC4; Al2O3
Shell material	304SS; 316L; TC4
Electrical connection	Direct outlet
Process connection	//
Protection Level	IP68
Explosion-Proof Grade	Ex ia Il CT6 (Optional)

Product Type

Selection Guide

LM04-	Submersible deep well level gauge
	Code	Appearance
	1	Outline of diffused silicon deep well level gauge
	2	Outline of ceramic capacitor deep well level gauge
	3	Outline of sapphire deep well level gauge
		Code	Output signal
		S1	4…20mA; S2://; S3://
		…	S4://; S5://; S6:RS485;
			Code	Power supply range
			U1	8…30VDC
			…	U2:3.1…8VDC;U3:3.3VDC
				Code	Housing material
				30	304SS;31:316L;32:TC4;
				…	33://;34://;35:C276
					Code	Thread specification
					C1	M20*1.5
					C2	G1/2
					…	C3:G1/4；C4:1/2NPT……Cn
						C8
						G1/8
						Cable length	Cable material
						Xxxx	PU; PE; PV; PTFE
							Measurement Range	Unit
LM04-	2	S1	U1	30	C1	X100PU	-[0…100]	mH2O

Pressure Transmitter