2-1
Chapter 2 Function and Configuration
Overview
The ALTJ9000 immersion type liquid level transmitter incorporates a microprocessor,
uses a semiconductor pressure sensor to detect the water pressure, and outputs the cur-
rent signal in proportion to the liquid level. This transmitter is composed of a probe and a
junction box. The probe, which is installed underwater, is connected to the above-ground
junction box by the hollow cable. The hollow cable contains a pipe with an inside diameter
of 3 mm so that the output does not change due to variations in atmospheric pressure.
Additionally, various settings of the liquid-level transmitter (range, damping time con-
stant, constant current output, etc.) can be changed and set from the control room using
a CommStaff communicator. Please also refer to the user's manual for the communicator
listed below as a reference document for this liquid level transmitter.
y
Field Communication Software CommStaff Model: CFS100 Instruction Manual (Smart
ALTJ™ 9000 Immersion-type Liquid-Level Device Edition), No. CM2-CFS100-2014.
Fig. 2-1. System configuration diagram of ALTJ9000
Power supply Junction box
(mounted on 2inch pipe or wall)
100 V AC
50/60 Hz 2-core cable 2-core shielded cable (special hollow cable)
4 to 20 mA DC
Probe (weight is detachable)
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