• Duct Probe
• Output 4-20mA
• Electrical equipment for use in potentially explosive atmospheres
• Potentially explosive atmosphere
• T311xEx transmitters are intrinsically safe
• The principle of intrinsic safety equipment

Relative humidity, temperature sensors at 150mm stem. Measured values are also converted to other humidity interpretations: dew point temperature, absolute humidity, specific humidity, mixing ratio, specific enthalpy.

ATEX certification for use in potentially explosive environments.

Electrical equipment for use in potentially explosive atmospheres

Special devices that can be a source of potential danger. Such devices must be designed, installed, operated, and maintained so as to not cause the explosion in a potentially explosive atmosphere. The basic information about equipment intended for use in the potentially explosive atmosphere contains 94/9/EC (ATEX) Directive.

Potentially explosive atmosphere

An area, in which could be present a mixture of air and flammable substances (gas, vapor, mist, combustible dust) in such a concentration, that it may catch fire. Explosion may be initiated by a spark or hot surface.

T311xEx transmitters are intrinsically safe

It is a way of equipment protection, which is based on the limitation of energy (electrical and thermal) at a level lower than the level that could cause ignition of a specific hazardous atmospheric mixture.

The principle of intrinsic safety equipment

Lies in limitation of the amount of electric energy supplied to electric circuits from power source and energy accumulated into parts of electric circuits. Intrinsically safe zener barriers and intrinsically safe isolation amplifiers are elemental types of intrinsically safe interfaces designed to protect electrical circuits installed in potentially hazardous areas.

Hazardous and Safe Area

Intrinsically safe transmitter is designed for use in potentially explosive atmosphere, zone 2.

Programmable temperature and humidity transmitter is equipped with temperature and relative humidity sensors.

Measured values are also converted to other humidity interpretations - dew point temperature, absolute humidity, specific humidity, mixing ratio, or specific enthalpy. Degrees Celsius and Fahrenheit are user selectable.

Transmitter contains a microprocessor-based control circuitry in a durable plastic case with connection terminals and sensors in a filter with stainless steel mesh. Humidity transmitters is equipped with two galvanic isolated 4-20mA outputs. Configuration of outputs and output range are user adjustable. Large dual line LCD for simultaneous display of T+RH or other humidity interpretation is an advantage. Display is possible to switch off. Computerized design ensures temperature compensation of the humidity sensor and fails indication. State-of-the-art capacitive polymer sensor ensures excellent calibration long-term stability, inertia against water, and condensation. Transmitters are designed for use in non-aggressive environment.