4 20ma Temperature Transmitter

The 4 20ma temperature transmitter,

uses advanced digital technology and has many advanced features not available in traditional analog instruments. It has excellent performance in suppressing high and low frequency interference signals, and can be reliably applied even in high power inverter control systems. At the same time, the application of digital technology has completely overcome the shortcomings of the linearity difference of traditional temperature transmitters.

Know more about pressure transducer 4-20ma

The transmitter adopts digital adjustment, zero-free and full-scale potentiometer, automatic dynamic calibration zero, automatic temperature drift compensation and many other advanced technologies, and meets the requirements of anti-electromagnetic interference of products in harsh industrial field environment. The application of this series of technologies guarantees the stability and reliability of the products.

Specifications

• Accuracy

• Temperature Sensors:
  1/6 DIN Class B (standard), 1/10 DIN Class B (option).
  Option: Individually calibrated spot elements with four-wire connection enabling ±0.025 °C (±0.045 °F) total sensor accuracy.

• Water Level Sensor:
  ± 2 mm (0.08 in.) with 500 mm active length, ± 4 mm (0.16 in.) with 1000 mm active length.

• Element Type(s)

• Pt-100 spot elements according to EN 60751.

• Number of Spot Elements

• Up to 16 RTD spot elements:
  • Three-wire common return or individual wiring.
  • Four-wire individual wiring.

• Measurement Range

• Temperature Sensor: -50 to +250 °C (-58 to +482 °F).
  Active measuring range water level sensor: 500 mm (20 in.), or 1000 mm (40 in.).

• Overall Length

• Maximum 60 m (197 ft).

• Protective Sheath

• Stainless steel, AISI 316. Wall thickness 0.3 mm (0.012 in.). ∅= 1 in.

• Water Level Sensor Versions

• • Open model: Recommended for crude oil and heavy duty products.
  

  • Closed model: Recommended for lighter fuels such as diesel oil.

Features

• 4 20ma temperature transmitter improves accuracy with unique sensor calibration.

• Measure liquid temperature with up to 16 spot elements.

• Measure free water level.

• Select from a wide range of accessories such as anchor weights and vapor boots.

• Only fully immersed elements are used to determine product temperature. One of the temperature sensor elements may be installed inside the water level probe.

• The temperature transmitter has an integrated water level sensor attached to the temperature sensor tube to measure free water level at the bottom of the tank. It enables correct product volume calculations.

• The  multiple spot temperature sensors measure temperature with a number of Pt-100 spot elements placed at different heights to provide a tank temperature profile and an average temperature.