IM-P402-62 AB Issue 5
3
2. General product information
The LT2010 is a level transmitter which converts the voltage output from a Spirax Sarco
capacitance probe into an isolated 0 - 20 or 4 - 20 mA signal proportional to water level. The
output can be scaled to represent any desired water level range, the gauge glass for example. Two
or more transmitters may be used with a single capacitance probe if required.
The LT2010 can also power and be used with any 2 wire 0 - 20 or 4 - 20 mA transmitter, for example
for pressure, temperature, or level transmission using a pressure or differential pressure transmitter.
An inverse output can be selected for level monitoring with a differential pressure transmitter. The
transmitter has LED indication of mains on, zero point, and span settings, and a wave filter function
which gives an averaged output, maintaining a stable signal under the very different turbulence
conditions found in tanks and high output boilers.
The LT2010 is set up before installation to suit the mains supply voltage and to provide the
required functions, using internal switches. See 'Setting up the transmitter', Section 4. Calibration
can be altered without removing or dismantling the unit, using the zero point and full scale /span
potentiometers on the front panel.
Maximum ambient temperature
55°C
(131°F)
Minimum ambient temperature
0°C
(32°F)
Pollution degree
2
Overvoltage category
I I
Indoor use only
Altitude
2 000 m
(6 561 ft)
Humidity
Maximum relative humidity 80% for temperature up to 31°C (87.8°F)
decreasing linearly to 50% relative humidity at 40°C (104°F).
Protection rating
IP40
Mains supply voltage
230 V setting
198 V - 264 V
115 V setting
99 V - 132 V
Frequency
50 - 60 Hz
20 mm Cartridge, 100 mA anti-surge (T). For the UL version, replacement
Fuse type
fuses must be UL recognised to maintain the integrity of the approval.
Maximum power consumption
6 VA
Maximum cable length (transmitter to probe)
100 m
(328 ft)
Terminal torque rating
1 N m
(9 lbf ft)
