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MTL660 Loop Powered Indicators

The MTL600 range of digital indicators enable process variables to be displayed locally in hazardous and general purpose plant areas. A typical example would be the re-transmission of mass/flow computations from the safe area, through a suitable MTL IS interface to the indicator in the hazardous area.

The displays are loop powered from the 4-20mA process signal and their low voltage drop allows them to be installed in almost any 2-wire, 4–20mA transmitter loop. All units can indicate measured values in a linear or a square root extraction mode; the latter being used, for example, to display flow from differential pressure measurement devices such as orifice plates, Dall tubes, or venturi.

The MTL661 Field mounting unit is housed in a tough aluminium enclosure, suitable for wall or pipe mounting. For corrosive atmospheres use the MTL663 - the plastic case provides excellent resistance to harmful contaminents.

The MTL665 is the panel mounted version and is IP65, IP66, IP67 and NEMA4 rated.

MTL66x IS indicators are classified as ‘non-energy storing’ simple apparatus so they can be inserted into any IS loop without recertification.

Safety
Excellent resistance to harmful contaminents
Reliability
Housed in a tough aluminium enclosure
Ease of Use
Installed in almost any 2-wire, 4–20mA transmitter loop

Certifications and compliances

ATEX & IECEx approved

For MTL66x & MTL66xB models

  • Zone 0 mounting
  • Group IIC & IIIC
  • T4 temperature classification
  • Certified for -25°C to +70°C

For MTL66x & MTL66xB models

  • Class I, II & III Div 1 mounting
  • Class I Zone 0 mounting
  • Group IIC
  • T4 temperature classification
  • IP65

CE marked for compliance with EMC, ATEX and RoHS Directives.

Other approvals

  • India (PESO)
  • Russia (EAC)

Approvals held and approval details vary between models. Please refer to certificates for specific details. 

Design Features

  • Loop powered 4-20mA
  • Field and panel mounting
  • Environmental protection to IP67
  • Easy to configure
  • Number of displayed digits configurable
  • Backlight options
  • Zone 2 mounting
Caratteristiche

Ordering information

Product Code Type Backlight Case Material Weight (nom.) Case Style
MTL661 Field No Aluminium 825g A
MTL661B Field Yes Aluminium 825g A
MTL662 Panel No Aluminium 425g B
MTL662B Panel Yes Aluminium 425g B
MTL663 Field No GRP 500g A
MTL663B Field Yes GRP 500g A
MTL665 Panel No Aluminium 300g C
MTL665B Panel Yes Aluminium 300g C
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