YTA70 Head Mount Temperature Transmitter

Brand: Yokogawa Electric Corporation

The YTA70 is a head mount type of temperature transmitter that accepts thermocouple, RTD, ohms or DC milivolts input and converts it to a 4-20 mA DC signal for transmission. 

The YTA70 conforms to the standard DIN form B head mounting. The YTA70 supports HART communication protocol. 

HART protocol revision is selectable from HART 5 or HART 7, and HART 7 features long tag number up to 32 characters, enhanced burst mode and event notification, and command aggregation function.
Features
  • 4 to 20 mA DC Analog Output
  • HART 5 Digital Protocol Output (-E version)
  • Selectable HART 5 / 7 Digital Protocol Output (-J version)
  • 17 Input Types
  • Head Mount or DIN Rail Mount

Specifications

Accuracy

  • ± 0.1 % of Span or ± 0.01 mV whichever is greater - DC Voltage
  • ± 0.1 % of Span or ± 0.1 ohm whichever is greater - Resistance
  • ± 0.1 % of Span or ± 0.1° C (± 0.18° F) whichever is greater - RTD Pt100
  • ± 0.1 % of Span or ± 0.2° C (± 0.36° F) whichever is greater - RTD Ni100
  • ± 0.1 % of Span or ± 0.5° C (± 0.9° F) whichever is greater - E, J, K, N, T, L, U Thermocouples
  • ± 0.1 % of Span or ± 1.0° C (± 1.8° F) whichever is greater - B, R, S, Lr, W3 & W5 Thermocouples
  • ± 1° C (± 1.8° F) whichever is greater - Cold Junction Compensation Accuracy (Thermocouples)

Ambient Temperature Range

  • -40° to 85° C (-40° to 185° F)

Approvals & Certifications

  • ATEX: Intrinsically Safe
  • EMC EN 61326-1 Class A, EN 61326-2-3
  • FM Intrinsically Safe/Non-Incendive
  • GOST 3044-84
  • IEC Ex: Intrinsically Safe

Communication

  • HART 5, 7

Electrical Connectors

  • DIN 43710
  • M3 Screws - Terminals

Enclosure Finish

  • Red Paint

Enclosure, Body Material

  • Polycarbonate

Humidity

  • 0 to 95 % Non-Condensing Relative Humidity - Ambient Humidity Limits

Input

  • -800 to 800 mV

Isolation

  • 1,500 Vac - Input/Output Isolation

Load

  • 250 to 600 ohms - for Digital Communication

Mounting

  • DIN Form B Connection Head

Output

  • 4-20 mA DC - 2-Wire

Power Supply Effect

  • ± 0.005 % of Full Scale Per Volt

Resistance

  • 0 to 7,000 ohms - Input Range
  • 10 megaohms - Input Resistance (For Thermocouples, mV)
  • 3 kiloohms at Power-Off - Input Resistance (For Thermocouples, mV)
  • 5 ohms Per Wire or Lower - Input Lead Wire Resistance (For RTDs, ohm)

Response Time

  • 1 to 60 seconds Programmable

RTD Type

  • Ni100 as Per DIN 43760
  • Pt100 as Per IEC 60751

Sensor Protection

  • Burn-Out: High (NAMUR NE43 UpScale) & Low (NAMUR NE43 Downscale) or Value within 3.5-23 mA

Sensor, Probe Connection

  • 2-Wire RTD or ohm
  • 3-Wire RTD or ohm
  • 4-Wire RTD or ohm
  • T/C or DC mV

Sensor, Probe Type

  • B Thermocouple as Per IEC 60584
  • E Thermocouple as Per IEC 60584
  • J Thermocouple as Per IEC 60584
  • K Thermocouple as Per IEC 60584
  • Lr Thermocouple as Per GOST 3044-84
  • L Thermocouple as Per DIN 43710
  • N Thermocouple as Per IEC 60584
  • RTD
  • R Thermocouple as Per IEC 60584
  • S Thermocouple as Per IEC 60584
  • T Thermocouple as Per IEC 60584
  • U Thermocouple as Per DIN 43710
  • W3 Thermocouple as Per ASTM E988-90
  • W5 Thermocouple as Per ASTM E988-90

Span - Minimum

  • 10° C (18° F) - RTD Typicals
  • 2.5 mV - DC Voltage
  • 200° C (360° F) - Thermocouples
  • 25 ohms - Resistance

Supply Voltage

  • 13.8-35 Vdc - for Digital Communication
  • 8-30 Vdc - for Intrinsically Safe Typical
  • 8-35 Vdc - for Operation

Temperature Effect

  • ± 0.05 % of Span or ± 0.05 ohm Per 10° C (18° F) whichever is greater - Resistance
  • ± 0.05 % of Span or ± 0.05° C (± 0.09° F) Per 10° C (18° F) whichever is greater - RTD Typical
  • ± 0.05 % of Span or ± 0.25° C (± 0.45° F) Per 10° C (18° F) whichever is greater - E, J, K, N, T, L, U Thermocouples
  • ± 0.05 % of Span or ± 1.0° C (± 1.8° F) Per 10° C (18° F) whichever is greater - B, R, S, Lr, W3, W5 Thermocouples
  • ± 0.05 % of Span or ± 5 μV Per 10° C (18° F) whichever is greater - DC Voltage

Temperature Range

  • -200° to 2,300° C (-328° to 4,172° F) - Thermocouples
  • -200° to 850° C (-328° to 1,562° F) - RTD

Zero Offset

  • ± 50 % of Selected, Max.
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