ITA-T1S Technical
Information
Intra-Automation
- 3 -
1 Characteristics
Simple and rugged construction
Applicable for liquids with density
0,5 kg/dm³
Measuring length 300 up to 6000 mm (11,8 up to 236“)
Applicable for small storage reservoir
Pressure rating up to PN40 (300 lbs)
Temperature range up to 130 °C (166 °F)
Material of transmitter housing: Aluminium or stainless steel
Protection class: IP65 NEMA 4X)
Different sensor-tube materials available
Sensor tube available in Plastic material
Current output: 4…20 mA (optional: HART)
2 Functional Principle
The level sensing transmitter type ITA-T1S will be installed vertically
on the top of a tank. Different types of tank-connections are available
(see order code). The electrical connection between level sensor and
transmitter is done on factory side (3-wire).
A float follows directly the changes of liquid level and moves along
the guide tube. Inside the float a permanent magnet system is
installed. This magnetic field operates directly to the reed switches
inside the sensor tube. While the reed-switches are activated the
result will be a change in the resistance load which corresponds
directly to the level.
The transmitter (f.e. type INT5333 or TMT182) allocates to the actual
level a current output between 4 and 20 mA.
If required on customer side the movement of the float can be
reduced by using adjustable float stops.
3 Indicator
Measured values can be displayed directly on site by the optionally
available LCD digital 4 ½ digit indicator. The indicator is freely configurable
by means of a DIP-switch. Values in between 0 and 19999 can be
indicated. When supplied, the device has been configured to the clients’
requests. If no requests have been received, the configuration is 0-100 %.
For indication of the measured value the DigiFlow 520 can be connected
directly to the sensor type ITA-T1S. The DigiFlow 520 shows the actual
value in most of all engineering units (see fig. 3). Linearization of various
tank shapes can be done in the indicator.
fig. 2 Digital indicator (at site)
Abb. 1 Schematische Darstellung
zur Anordnung der Reedkontakte
fig. 3 DigiFlow 520
