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Field Mounted Hart Protocol Temperature Transmitter

Field Mounted Hart Protocol Enabled Temperature Transmitter
  • RoHS Icon
  • CE Approved
  • cCSAus
  • FM
  • ATEX



Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 $875.21
5-9 $831.45
10-24 $813.95
25-49 $778.94
50-99 $761.43
100+ $743.93

In stock

Lead Time (If not in stock): 8 weeks
Field Mounted Hart Protocol Enabled Temperature Transmitter TXUN-FD TXUN-FD
  • RTD, TC, Ω, and Bipolar mV Input and Analog Output
  • High Definition Local Operator Interface (LOI) with 3 Optical Buttons
  • Selectable Red or White Backlight
  • Ex D Explosion Proof/Flame Proof in Aluminum or 316 Stainless Steel Version

TXUN-FD Model Options

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Input Type
Input Class
Input Ranges
Output Type
Output Class
Display Type
Supply Voltage Type
FM Approved
Additional Feature


High Definition Display
• 0, 90, 180, & 270 degree position adjustments.
• Monitoring, programming, and diagnostics view.
• Extensive diagnostics with flashing red or white backlight
• Supports 7 languages
Local operator interface (LOI)
• 3 optical buttons up, down and enter.
• Dynamically adaptive to wear or accumulation of dirt.
• Immune to interference from ambient light sources.
• Useable with or without gloves.
• From the LOI through guided user menu.
• OMSET and HART modem.
• HHC, DCS or AMS via HART.
• For installation in zone 0, 1, 2 and zone 20, 21, 22 and in Class 1, Division 1 and 2 applications.
• Hardware assessed for use in SIL 2 applications.
• Mounting on 1.5”–2” pipe bracket or on wall / bulkhead.
• Linearized temperature measurement with TC and RTD sensors e.g. Pt100 and Ni100.
• HART communication and 4...20 mA analog PV output for individual, difference or average temperature measurement of up to two RTD or TC input sensors.
• Conversion of linear resistance to a standard analog current signal, e.g from valves or Ohmic level sensors.
• Amplification of bipolar mV signals to standard 4...20 mA current signals.
• Up to 63 transmitters (HART 7) can be connected in a multidrop communication setup.
Technical Characteristics
• NAMUR NE43 and NE89.
• HART protocol revision can be changed by user configuration to either HART 5 or HART 7 protocol.

Environmental Conditions
Operating Temperature: -40 to 85°C (with silicone O-ring)
Operating Temperature: -20 to 85°C (with FKM Oring)
Storage Temperature: -40 to 85°C
Calibration Temperature: 20 to 28°C
Relative Humidity: 0 to 100% RH (condensing)
Protection Degree:IP54/IP66/IP68/type 4X
Mechanical Specifications
Dimensions: Ø 110 mm
Dimensions (HxWxD), Aluminum: 109.3 x 145 x 126 mm
Dimensions (HxWxD), Stainless Steel: 107.4 x 145 x 124 mm
Weight Approx., Aluminum/Stainless Steel: 1.3/2.8 kg
Wire Size: 0.13 x 1.5 mm2/AWG 26 to 16 stranded wire
Screw Terminal Torque: 0.4 Nm
Vibration: EC 60068-2-6
2 to 25 Hz: ±1.6 mm
25 to 100 Hz: ±4 g
Display Resolution: 96 x 64 pixels
Number of Digits: 5
Backlight: Selectable ON/OFF
Backlight Color: Selectable white or red
Common Specifications
Supply Voltage, DC: Ex ia, Intrinsically Safe: 10 (12 - with backlight)...30 Vdc
Supply Voltage, DC: Other: 10 (12 - with backlight)...35 Vdc
Isolation Voltage
Isolation Voltage, Test/Working: 1.5 kVAC/50 Vac
Response Time
Response Time (Programmable): 1 to 60 s
Signal/Noise Ratio: > 60 dB
Start-Up Time, Transmitter to display:Max. 5 s
Long-Term Stability, Better Than: ±0.1% of span/year
Accuracy:Better than 0.05% of selected range
Signal Dynamics, Input: 22 bit
Signal Dynamics, Output: 16 bit
EMC Immunity Influence: < ±0.1% of span
Extended EMC Immunity: NAMUR NE21, A Criterion, Burst: < ±1% of span
Input Specifications
Common Input Specifications
Max. Offset: 50% of selected max. value
RTD Input
RTD Type: Pt50/100/200/500/1000 Ni50/100/120/1000
Cable Resistance per Wire: 5 Ω (up to 50 Ω per wire is possible with reduced measurement accuracy)
Sensor Current: Nom. 0.2 mA
Linear Resistance Input
Linear Resistance Min/Max: 0 to 7000 Ω
TC Input
Thermocouple Type: B, E, J, K, L, N, R, S, T, U, W3, W5, LR
Cold Junction Compensation (CJC): Constant, internal or external via a Pt100 or Ni100 sensor
Voltage Input
Measurement Range: -800 to 800 mV
Min. Measurement Range (Span): 2.5 mV
Input Resistance:10 MΩ
Output Specifications
Current Output
Signal Range: 4 to 20 mA
Min. Signal Range: 6 mA
Load (@ Current Output): ≤ (Vsupply - 10) / 0.023 [Ω]
Load Resistance, with Backlight: ≤ (Vsupply - 12) / 0.023 [Ω]
Sensor Error Indication: Programmable 3.5 to 23 mA
NAMUR NE43 Upscale/Downscale: 23 mA/3.5 mA
Common Output Specifications
Updating Time: 440 ms
HART Protocol Revisions: HART 7 and HART 5
Observed Authority Requirements
EMC: 2014/30/EU
EAC: TR-CU 020/2011
EU RO Mutual Recognition Type
Approval: MRA0000009
ATEX 2014/34/EU: DEKRA 15 ATEX 0058 X
IECEx: IECEx DEK 15.0039 X
FM: FM16US0009X/FM16CA0010X
CSA: 70024231
EAC Ex TR-CU 012/2011: RU C-DK.GB08.V.01316
NEPSI: GYJ15.1336X, GYJ15.1337X and GYJ15.1338X
SIL: Hardware assessed for use in SIL applications
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does Field Mounted Hart Protocol Temperature Transmitter comes without explosion proof housing?

Asked by: Anonymous
Thank you for the inquiry. TXUN-FD includes the rated housing. Please see manual for full details and ratings. Best regards OMEGA
Answered by: NorwalkAE_RS
Date published: 2023-04-17
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