THE INSTRUMENT

Often it is more cost effective to replace a sensing head with one which is pre-calibrated at a testing station, thus reducing disruption of the measuring system. Technovation offers such an industry standard 4-20mA transmitter consisting of a gas sensor, its associated circuitry with a display and in a certified Ex-proof junction box. A sensor housed in a certified Ex-proof housing is fitted to the transmitter.

FEATURES

The three-wire transmitter allows the power and signal to be realized on a three-core wire. One core for positive supply of 12 to 24 VDC, the second core for the 4 to 20 mA output and the third core for the 0 volt supply. The transmitter is immune to voltage drops from long runs and noise from motors, relays, actuators, switches, transformers and industrial equipment.

APPLICATIONS

Every transmitter is supplied pre-calibrated for a customer specific range. The table below gives an indication of the gases/ranges offered. These transmitters can be connected to a DC system which supplies the DC Power for the module. They could also be connected to stand alone controllers and PLCs and other data acquisition systems

STANDARD SPECIFICATIONS

Power Supply      : 12 to 24 VDC.( See Note)

Sensors offered   : Choices as per table below.

Duty                     : Continuous

Display                 : 4-digit LED

Temp                    : 20 oC to 45 oC

Humidity               : 10 - 90 % RH

Pressure               : Ambient

Load resistance   : <500 Ohms depends on supply voltage

Housing                : Aluminum  Ex-proof  JN. Box for Gases Gr II A,B an GR II C Zone 1 & 2

Enclosure size   : 12x8x8.5 (WxHxD) Cms

Sampling           : Diffusion mode

Calibration         : Via built in Span and Zero potentiometers.

Flow Thru Cap   : Provided

Sensor Head       : PESO certified and BIS marked Explosion proof sensing heads as per IEC 60079-01: 2014 available with flow thru cap