Features
With „ATEX“ licence for locations with explosive gas atmosphere and for locations with inflammable dust for use in atmospheric conditions
Description
MELA®-Humidity/-temperature sensors in these series are used to measure relative humidity or temperature or relative humidity and temperature in air and other non-aggressive gases in explosion hazardous arears and in locations with inflammable dust.
The sensors comprise a sensor part with a sintered filter mounted on a robust aluminium die-cast housing (transmitter part), both made of stainless steel.
Connection to a non-intrinsically safe electric circuit for humidity (F*C3.Ex/8) and for temperature sensors (T*C3.Ex/8) is achieved with a 1-channel transmitter power supply unit and for the combined humidity and temperature sensors(K*C3.Ex/8) either with a 2-channel or with two 1-channel transmitter power supply units with galvanic isolation between input-/output circuits and power supply.
Description
MELA®-Humidity/-temperature sensors in these series are used to measure relative humidity or temperature or relative humidity and temperature in air and other non-aggressive gases in explosion hazardous arears and in locations with inflammable dust.
The sensors comprise a sensor part with a sintered filter mounted on a robust aluminium die-cast housing (transmitter part), both made of stainless steel.
Connection to a non-intrinsically safe electric circuit for humidity (F*C3.Ex/8) and for temperature sensors (T*C3.Ex/8) is achieved with a 1-channel transmitter power supply unit and for the combined humidity and temperature sensors(K*C3.Ex/8) either with a 2-channel or with two 1-channel transmitter power supply units with galvanic isolation between input-/output circuits and power supply.
Specification
Technical Data
Output 1: relative humidity
Output range 1 ........................................................ 0...100%rh
Output signal 1 ......................................................... 4...20 mA
Accuracy (MR 5...95%rh at 10...40 °C) ......................... ±2%rh
at T<10 °C; T>40°C ....................... 0.1%/K additional
Output 2: temperature
Measuring element (ref. DIN IEC 751) .............. Pt 100 class B
Measuring range 2 ............................................... -20...+80 °C
Output signal 2 ......................................................... 4...20 mA
(special types with special measuring range on demand)
Accuracy at 23°C ........................................................... ±0.2 K
other ranges ......................................................... ±0.3 K
at T<10°C, T>40°C ......................... ±0.007 K/K additonal
Others
Storage temperature ............................................. -40...+80°C
Approved operating temperature range ................. -40...+80°C
Maximum surface temperature of housing ....................... 95°C
Sensor operating voltage ........... 13...24V DC (intrinsically safe)
Maximum input voltage Ui.................................... 24V DC
Maximum input amperage Ii................................. 100 mA
Maximum input power Pi..................................... 780 mW
Maximum inner capacity Ci............................... negligible
Maximum inner inductivity Li............................. negligible
Degree of protection ....................................................... IP 65
electrical equipment in instrument group II with
protection provided by housing
Housing material
Sensor part ............................................. stainless steel
Transmitter part ............................................. alu-diecast
Cable screwing M16 x 1.5
clamping range .................................................. 3...7 mm
Initial torque
(for recommended cable type) ............................ 4.0 Nm
Cable between sensor and transmitter power supply unit,
shielded
Recommended type .......................... NF14 (Metrofunk)
Maximum power transmission length ................... 200 m
Maximum cable capacity ............................. 20nF/100 m
Ends of the power line: wire sleeves with plastic collars
Output 1: relative humidity
Output range 1 ........................................................ 0...100%rh
Output signal 1 ......................................................... 4...20 mA
Accuracy (MR 5...95%rh at 10...40 °C) ......................... ±2%rh
at T<10 °C; T>40°C ....................... 0.1%/K additional
Output 2: temperature
Measuring element (ref. DIN IEC 751) .............. Pt 100 class B
Measuring range 2 ............................................... -20...+80 °C
Output signal 2 ......................................................... 4...20 mA
(special types with special measuring range on demand)
Accuracy at 23°C ........................................................... ±0.2 K
other ranges ......................................................... ±0.3 K
at T<10°C, T>40°C ......................... ±0.007 K/K additonal
Others
Storage temperature ............................................. -40...+80°C
Approved operating temperature range ................. -40...+80°C
Maximum surface temperature of housing ....................... 95°C
Sensor operating voltage ........... 13...24V DC (intrinsically safe)
Maximum input voltage Ui.................................... 24V DC
Maximum input amperage Ii................................. 100 mA
Maximum input power Pi..................................... 780 mW
Maximum inner capacity Ci............................... negligible
Maximum inner inductivity Li............................. negligible
Degree of protection ....................................................... IP 65
electrical equipment in instrument group II with
protection provided by housing
Housing material
Sensor part ............................................. stainless steel
Transmitter part ............................................. alu-diecast
Cable screwing M16 x 1.5
clamping range .................................................. 3...7 mm
Initial torque
(for recommended cable type) ............................ 4.0 Nm
Cable between sensor and transmitter power supply unit,
shielded
Recommended type .......................... NF14 (Metrofunk)
Maximum power transmission length ................... 200 m
Maximum cable capacity ............................. 20nF/100 m
Ends of the power line: wire sleeves with plastic collars
Download
Note : Design and specifications are subject to change without notice.
Note : Please make sure the product and the device which connect with RS-485 are on common ground, avoid damaged product.