Immersion Type Liquid Level Transmitter Model JTL32_/JTL33_ Model No. JTL320, JTL321, JTL322, JTL330, JTL331, JTL332 Model JTL_ _ _ is an immersion liquid level transmitter that measures water levels in distribution ponds, wells, dams, rivers, seawater intake, sewage tanks in sewage treatment plants, sewage pump wells, sludge storage tanks, and human waste tanks. Summary Documents