About 4 to 20 mA - 2 WIRE INDUSTRY STANDARD TRANSMITTERS

THE INSTRUMENT

Oftenit is more cost effective to replace a sensing head with one which is pre-calibrated at a testingstation, thus reducing disruption of the measuringsystem. Technovation offers suchan industry standard 4-20mA transmitterconsisting of an electrochemical sensor,its associated circuitry and in a Ex-Proof housing and Ex-proof Sensor head.

FEATURES

The two-wire transmitter with alocal display for measured parameter value allows the signal and power to besupplied on a single wire-pair by modulating the power supply current with theinput signal source. The transmitter is immune to voltage drops from long runsand noise from motors, relays, actuators,switches, transformers and industrialequipment.

APPLICATIONS

Every transmitter is suppliedpre-calibrated for a customer specific range. The table below gives anindication of the gases/ranges offered. These transmitters can be connected toa DC system which supplies the DC Power for the loop. They could also be connectedto stand alone controllers and PLCs and other data acquisitionsystems

STANDARD SPECIFICATIONS

Power Supply :12 to 24 VDC

Sensor Expected life :2 years in air

Sensor type :Electrochemical

Duty :Continuous

Operating temp :5 oC to45 oC

Operating Humidity :10 - 90 % RH

Operating Pressure :Ambient

Output impedance :2 M Ohms

Calibration :Via built in Span and Zeropotentiometers.

Housing : Cast AluminumEx-proof housing

Sampling :Diffusion mode OR in flow throughmode.

Display : LCD Display.

Size and weight : 120x120x90 mm. 1kg

Connection size : M20 threaded cableentries for cable gland and for sensor head.

SensingHead : PESO certified and BIS marked Explosion proof sensing heads as perIEC 60079-01: 2014 available with flow thru cap

POWER SUPPLY RESTRICTIONS

TABLE OF GASES & RANGES OXYGEN 0 - 25 % CARBONMONOXIDE 0 - 1000 PPM HYDROGEN SULPHIDE 0 - 100 PPM SULPHUR DIOXIDE 0 - 20 PPM CHLORINE 0 - 50 PPM NITROGEN DIOXIDE 0 - 100 PPM HYDROGEN 0 - 1000 PPM or 2 % ARSINE 0 - 1PPM HYDROGEN CYANIDE 0 - 30 PPM OZONE 0- 1PPM PHOSPHINE 0 - 1 PPM AMMONIA 0 - 100 PPM PHOSGENE 0 - 1PPM HYDRAZINE 0 - 1PPM OTHER GASES AND RANGES ON REQUEST

OPTIONAL EXTRA

Weather Shade for Sensor Holder

Advanced Signal Transmission for Industrial Automation

Engineered for high accuracy and fast response, this transmitter seamlessly converts process signals like temperature, pressure, or flow into a standardized 4 to 20 mA output. It supports a broad voltage range and operates efficiently under varying environmental conditions including high humidity and temperature extremes. Its robust construction caters to both harsh industrial sites and precise measurement needs.


Flexible Compatibility and Integrated Protection

The transmitters universal design allows compatibility with most industrial sensors and signal types. It features reverse polarity and overload protection to safeguard both device and system. Wall or DIN rail mounting ensures installation flexibility, while its sealed construction (IP65) protects against dust and moisture, making it reliable in rugged environments.