Descripción
Comet T3111Ex
- Intrinsically Safe Humidity and Temperature Transmitter
- Electrical equipments for use in potentially explosive atmospheres
- Potentially explosive atmosphere
- T311xEx transmitters are intrinsically safe
- The principle of intrinsic safety equipment
Intrinsically Safe Humidity and Temperature Transmitter with Cable Probe, Cable 1m
Programmable transmitters T3110Ex, T3111Ex, T3113Ex with 4-20 mA outputs are designed for measurement of relative humidity and temperature in potentially explosive environments.
Electrical equipments 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 an explosion in potentially explosive atmosphere. The basic information about equipments 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 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 a 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 interpretation – 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.
Manufacturer Specs
| Comet T3111Ex Specifications | |
| Technical parameters | Value |
| Output | 4-20mA |
| Measured Value | Temperature + Relative Humidity |
| Construction Type | With T+RH Probe on Cable |
| Design | Industrial |
| Temperature Measuring Range | -30 to 105 °C |
| Relay Output | No |
| Two-State Input | No |
| Lcd Display | Yes |
| PoE | No |
| Relative humidity range | 0 to 100% |
| Accuracy of relative humidity measurement | ±2.5% relative humidity from 5 to 95% at 23°C |
| Accuracy of temperature output | ±0.4°C from -30 to +100°C ±0.4% from reading over +100°C |
| Available temperature units | degrees Celsius, Fahrenheit |
| Accuracy and range of dew point temperature output – for more details see graphs | ±1.5°C at ambient temperature T<25°C and RH>30% range -60 to +80 °C |
| Accuracy and range of absolute humidity output | ±1.5g/m3 at ambient temperature T < 25°C range 0 to 400 g/m3 |
| Accuracy and range of specific humidity output | ±2g/kg at ambient temperature T < 35°C range 0 to 550 g/kg |
| Accuracy and range of mixing ratio output | ±2g/kg at ambient temperature T < 35°C range 0 to 995 g/kg |
| Accuracy and range of specific enthalpy output | ±3kJ/kg at ambient temperature T < 25°C range: 0 to 995 kJ/kg |
| Temperature operating range of case with electronics | -30 to +60°C |
| Temperature operating range (case surroundings) | up to +60°C |
| Temperature operating range of LCD display | readable to operating temperature +70°C, it is recommended to switch OFF the LCD over +70°C |
| Range of humidity sensor temperature compensation | all temperature range |
| Current outputs – two-wire connection | 4-20mA, galvanic isolated |
| Configuration of outputs and output range | user adjustable from the PC |
| Filtering ability of sensor cover | 0.025mm – filter with stainless steel mesh |
| Protection of the case with electronics | IP65 electronics, IP40 sensors |
| Power | 9-30Vdc |
| Length of the probe cable | 1m, 2m or 4m optionally |
| Dimensions | display unit 88.5 x 114 x 39.5 mm (W x H x D), probe length 88 mm, probe diameter 18mm |
| Weight | approximately 210g – 1m probe |
| Warranty | 3 years |
Tech Specs
Dataloggers / Data Acquisition/Dataloggers for Environmental Variables/Temperature Dataloggers Templ |
|
|---|---|
| Max Temperature | 105 C |
| Min Temperature | -30 C (-22 F) |
Test Equipment General Attributes |
|
| Warranty | 3 YEARS |
| Product Weight | 0.5 LBS |
| Shipping Weight | 0.6 LBS |
| Country of Origin | Czech Republic |
Valoraciones
No hay valoraciones aún.