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RTD Head Mount Temperature Transmitter w/ User Trim

RTD In-Head Temperature Transmitter


Item# TX12

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-4 C$156.88
5-9 C$149.04
10-24 C$145.90
25-49 C$139.62
50-99 C$136.49
100+ C$133.35

In stock

Lead Time (If not in stock): 9 weeks
RTD In-Head Temperature Transmitter TX12 TX12
  • User Trim—Null Out Sensor Error
  • Unique Push Button Configuration Without PC
  • High Stability
  • Programmable Burnout

TX12 Model Options

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Input Type
Input Class
Input Ranges
Output Type
Output Class
Supply Voltage Type

The TX12 head mounted temperature transmitter connects to any standard pt100 resistance sensor and converts the linearized temperature to a 4 to 20 mA signal. The transmitter is a two wire device, and is fully configurable by the user, over a wide temperature range, with the aid of a simple push button. This new TX12 design incorporates additional configuration menus, allowing the user to push button trim the transmitter output at both zero and span, ideal for trimming out sensor errors. The transmitters advanced circuitry guaranties high stability over the wide operating ambient temperature ranges experienced by head mounted devices. One of the transmitters features is the program LED, which provides visual indication of sensor fault when in normal operation and is also used to guide the operator through the simple menus during configuration.

Sensor Type: Pt100 100 Ω @ 0°C 2 or 3 Wire
Sensor Range: -200 to 850°C (-328 to 1562°F)
Sensor Connection: Screw terminal
Minimum Span: 25°C (77°F)
Linearisation: BS EN 60751(IEC 751) standard/JISC 1604
Measurement Accuracy: 0.1°C ±0.05% of reading
Thermal Drift: 25 ppm/°C
Excitation Current: <200 uA
Lead Resistance Effect: 0.002°C/Ω
Maximum Lead Resistance: 20 Ω per leg

Output Type: 2 wire, 4 to 20 mA current loop
Output Range: (4.0 to 20.0) mA
Output Connection: Screw terminal
Maximum Output: 21.5 mA (in high burnout condition)
Minimum Output: 3.8 mA (in low burnout condition)
Accuracy: (mA output /2000) or 5 uA (whichever is the greater)
Loop Voltage Effect: 0.2 uA/V
Thermal Drift: 1 uA /°C
Maximum Output Load: [(Vsupply-10)/20]K Ω
(Example: 700 Ω @ 24V)

General Specifications
Update Time: 500 mS
Response Time: 1 second
Start Up Time: 4 seconds (I out < 4 mA during start up)
Warm-Up Time: 1 minute to full accuracy
Power Supply: 10 to 30 Vdc

Ambient Operating Range: -40 to 85°C (-40 to 185°F)
Ambient Storage Temperature: -50 to 90°C (-58 to 194°F)
Ambient Humidity Range: 10 to 90% RH non condensing

Dimensions: 43 diameter; 21 mm height (1.7; 0.8")
Weight: 31 g (0.068 lb) (encapsulated)
EMC - BS EN 61326 :1998: Electrical equipment for measurement control and laboratory use
ANNEX A: Immunity test requirements for equipment intended for use in industrial locations
ANNEX F: Test configurations, operational conditions and performance criteria for transducers with integrated or remote signal conditioning
IEC 61000-4-2: Electrostatic discharge
IEC 61000-4-3: EM field
IEC 61000-4-4: Transient burst (output)
IEC 61000-4-5: Surge (output)
Note: Sensor input wires to be less than 3 m to comply.
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Rated 5 out of 5 by from TX12 rtd amplifier digital adjust zero and span We used these rtd amplifiers periodically to integrate into systems for resale. I find them superior because we can adjust the zero and span over a wide range of temperatures for various system needs with a relatively simple setting procedure - unlike other types which have a very narrow adjustment band. We use a simple fixed resistance reference set and get accuracy better than +-.25 deg C accuracy with our thin film rtds.
Date published: 2016-02-26
Rated 5 out of 5 by from Fast support and shipping! Omega got me out of a jam with this transmitter. It worked great. Easy to program
Date published: 2020-05-19
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is it supported with PR-12L RTD

Asked by: Athar99
The TX12 Transmitter can be installed in all of the PR-12 assemblies L,H or E.
Answered by: Applications Engineer AB
Date published: 2022-03-14
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2-conductor shielded cables, 30 m (100')
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