iTemp TMT127

Summary

Product identification

• Product name: iTEMP® Pt100 TMT127
• Description: Pt100 Temperature Transmitter for DIN rail mounting
• Measuring principle: Electronic acquisition and conversion of input signals in industrial temperature measurement.
• Measuring system: 2-wire transmitter with analogue output, measuring input for Pt100 in 2, 3, or 4-wire connection.

Operating limits

• Input limits:
  • Pt100 as per IEC 60751
  • Temperature range: -200 to 850 °C (-328 to 1562 °F)
  • Minimum span: 10 K
  • Cable resistance: max. 40 Ω per cable
  • Sensor current: ≤ 0.6 mA
• Output signal: Analogue 4 to 20 mA
  • Undershooting measuring range: linear decrease to 3.8 mA
  • Exceeding measuring range: linear increase to 20.5 mA
  • Sensor break/short-circuit: ≥ 21.0 mA (guaranteed > 21.5 mA)
• Load: Max. (VSupply - 12V) / 0.022 A
• Induced current requirement: ≤ 3.5 mA
• Current limitation: ≤ 23 mA
• Switch-on delay: 4 s (Ia = 3.8 mA during switch-on)
• Galvanic isolation: U = 2 kV AC (input/output)

Feed water

Not applicable for this device.

Product water

Not applicable for this device.

Electrical

• Supply voltage: Ub = 12 to 35 V (reverse polarity protection)
• Residual ripple: Uss ≤ 3 V at Ub ≥ 15 V, fmax. = 1 kHz
• Technology: Two-wire technology

Mechanical / hydraulic

• Weight: approx. 90 g (3.18 oz)
• Housing material: PC/ABS, UL 94V0
• Terminals: Pluggable screw terminal, max. 2.5 mm² solid, or strand with wire end sleeve.
• Width: 22.5 mm
• Mounting: For 35 mm top hat DIN rail according to IEC 60715

Environmental conditions

• Ambient temperature limits: -40 to +85 °C (-40 to 185 °F) (for Ex-area, see Ex-certificate)
• Storage temperature: -40 to +100 °C (-40 to 212 °F)
• Climate class: IEC 60654-1, class C
• Ingress protection: IP 20
• Shock resistance: 4g / 2 to 150 Hz as per IEC 60068-2-6
• Vibration resistance: See "Shock resistance"
• EMC: Shock resistance and interference emission as per EN 61326-1 (IEC 61326) and NAMUR NE 21
• Condensation: Permitted

Accuracy

• Response time: 1 s
• Reference operating conditions: Calibration temperature: +25 °C (77 °F) ± 5 K (9 °F)
• Measuring error:
  • Influence of supply voltage: ≤ ±0.01%/V deviation from 24 V (Percentages refer to the full scale value)
  • Influence of ambient temperature (temperature drift) for Pt100: Td= ±(15 ppm/K * (full scale value + 200) + 50 ppm/K * of set measuring range) * Δ ϑ
  • Influence of load: ± 0.02%/100 Ω (Values refer to the full scale value)
• Long term stability: ≤ 0.1 K/year or ≤ 0.05%/year (Values under reference operating conditions. % refer to the set span. The highest value is valid.)
• Accuracy specification:
  • Resistance thermometer RTD Pt100: 0.2 K (0.36 °F) or 0.08% ( % refer to the set span. The highest value is valid.)

Certificates and approvals

• CE-Mark: Meets EC directives.
• Hazardous area approvals: ATEX EEx ia, nA; CSA IS, NI; CSA GP; FM IS, NI. (See separate Ex documentation for details).
• Ship building approval: GL Germanischer Lloyd
• Other approvals: UL recognized component.
• Other standards and guidelines: IEC 60529 (IP-Code), IEC 60751, IEC 61010, IEC 61326, NAMUR NE 21.

Disclaimer: This extraction may miss figures, footnotes, or revisions. Contractual data must match the OEM PDF revision used on the project.

Official datasheet (PDF)

Lenntech datasheet mirror