The TB300 M bath is an instrument used to calibrate transducers, RTD and temperaturemeasuring
sensors in the field and in the laboratory. The possibility to generate positive and
negative temperature ramps makes it suitable for use in calibrating and testing thermostats.
TECHNICAL CHARACTERISTICS:
The TB300 M bath consists of a stainless tank with capacity of 10 litres, useful height 340 mm
and diameter 123 mm. The bath is equipped with a stainless steel mixer with electrical motor
power, a safety thermostat, drain cock and overflow drain pipe.
TB300 M is equipped with a PID microprocessor controller with a resolution up to 0,01 °C,
setting of the standard of measurement in °C, °F e K, programming of ascent/descent ramps
and storage of the thermostats’ operative temperature.
The instrument is also equipped with an acquisition card having two adjustable inputs (Pt100
3/4 wires; thermocouples: J, K, N, R, S) with bushes fitted with gold-plated contacts and
automatic compensation of the cold junction.
The first input is provided for the reference sample probe, thus obtaining a complete calibration
system which can be certified by SIT centres, in compliance with ISO 9000 regulations.
The second input is provided for probes that are being tested; hence, the instrument can
display the temperatures of the furnaces, the temperature of the sensor to be checked and of
the reference sample probe, at the same time.
Furthermore, TB300 M is equipped with the RS232 serial interface; it can operate in automatic
mode connected to the PC by means of the AQ2sp software which enables to carry out probe
calibrations and cyclical life tests; test results can be stored and printed, so they are easily
traceable in compliance with ISO 9000 Standards.
The TB300 M with the software AQ2sp for Windows can carry out:

• complete control of the bath from the PC,
• manual or automatic calibration of one or more probes,
• cyclic life or stress tests on temperature sensors,
• automatic threshold thermostat test,
• filing and printing of the results obtained, guaranteeing ISO 9000 Standards

FLUID LEVEL ADAPTER: (On demand)
The fluid level adapter slides directly into the test wells of the TB300 M bath is designed for
customers that needing to calibrate glass thermometers.
The fluid level adapter creates a positive bath fluid surface. The bath fluid is pumped up
through the test well to the surface of the bath and kept there. In relation to the liquid viscosity
the operator can regulate the level rotating the adapter tube.
The clear adapter cover protects the bath fluid from ambient temperature effects for better bath
stability. The cover can be drilled for any size probe.