In-Head Mount RTD Pt100 transmitter with 4-20ma output

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)

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)