SPECIFICATION - NITROGEN DIOXIDE TWO WIRE 4-20 MA TRANSMITTER

 

UNIPHOS – 581 T

 

Gas                                                     :           Nitrogen Dioxide (NO₂)

 

Range (ppm)                                     :           0 – 20 ppm

 

Resolution (ppm)                               :           0.1 ppm

 

Response Time (T₉₀)                        :           35 sec

 

Detection Principle                           :           Sealed Electrochemical Sensor

 

Gas Sampling                                   :           Diffusion

 

Accuracy                                            :           Inherently ±2% (But also depends on

                                                                        accuracy  of calibration gas)

 

Operating Life of Sensor                  :           Expected life 1 – 2 year.

                                                                        Warranted for one year.

 

Operating Temperature                    :           0 to 50 °C

 

Operating Pressure                          :           Ambient ±10%

 

Output                                                 :           4 – 20 mA

 

Power Supply from                           :           15 – 24 V DC

Controller / DCS                               

 

Dimensions                                       :           Dia. = 120 mm

                                                                        Height = 70 mm

 

Case Material                                    :           Explosion Proof Case

 

CMRI Certification                            :           Intrinsically safe for

                                                                        Gas Groups I, IIA & IIB

                                                                        Temperature class – T6

                                                                        (Category ‘ia’ as per IS: 5780 - 1980)