Ultrasonic pulses generated by the transducer (antenna) system, which travel at the speed of sound toward the target medium, are reflected by the surface of medium and received by the transducer system again. Due to the fact that the measurable time lapse between pulse emission and reception by antenna is proportional to the distance between antenna and highest level of target medium, the principle of ultrasonic level instrument can be illustrated as the following equation: S=CxT/2, S: distance, C: velocity of sound, T: time lapse.

Model	GDSL551	GDSL552
Application	Level measurement in various industrial fields, especially water treatment industry	Level measurement in various industrial fields, especially water treatment industry
Measuring Range	Liquid: (0.25~4)m	Liquid: (0.4~8)
Process Connection	G 1 1/2A	G2A
Hosing Material	PTFE, PU/PC	PTFE, PU/PC
Process Tempt. (Deg. C)	-40~70	-40~70
Process Press.	(-0.02~0.1) MPa	(-0.02~0.1) MPa
Output	4-20mA, via HART	4-20mA, via HART
Power Supply	2-wire (24V DC) 4-wire (24V DC / 220V AC)	2-wire (24V DC) 4-wire (24V DC / 220V AC)

 

Model	GDSL553
Application	Level measurement in various industrial fields
Measuring Range	Liquid: (0.5~15)m
Process Connection	Flange or Swiveling Holder
Hosing Material	PU/PC
Process Tempt. (Deg. C)	-40~70
Process Press.	(-0.02~0.1) MPa
Output	4-20mA, via HART
Power Supply	2-wire (24V DC) 4-wire (24V DC / 220V AC)