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.
SPECIFICATIONS Input 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 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
Environmental 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
Physical Dimensions: 43 diameter; 21 mm height (1.7; 0.8") Weight: 31 g (0.068 lb) (encapsulated) Approvals 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.
Rated 5 out of
TX12 rtd amplifier digital adjust zero and spanWe 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.