Omega Products TX12 User Manual

Smart Loop-Powered RTD

RoHS

In-Head Temperature

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omega.com

Transmitter

for RTD Sensors

TX12

U User Trim—Null Out

Sensor Error

U Unique Pushbutton

Conﬁguration Without PC

U High Stability U Programmable Burnout U LED Sensor Fail Indicator U Reconﬁgure in Seconds

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 pushbutton. 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) Linearization: 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 to 20 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] kΩ (Example: 700 Ω @ 24V)

General Speciﬁcations

Update Time: 500 mS Response Time: 1 second Start Up Time: 4 seconds

(1 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 Dia. x 21 mm H

(1.7 x 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 (10') to comply.

TX12 shown

actual size.

To Order (Visit omega.com/tx12 for Pricing and Details)

Model No. Description TX12 RTD transmitter (100 Ω, Pt 0.00385)

TX2-100 2-conductor shielded cables, 30 m (100') PSR-24S Regulated power supply, 24 Vdc, 400 mA, screw

terminal

PSR-24L Regulated power supply, 24 Vdc, 400 mA, UL,

stripped leads

PSR-24L-230 Regulated power supply, 24 Vdc, 400 mA, stripped leads, 230 Vac input, CE

TX-SCALED Scaling charge for factory set up of range (specify temperature range)

Comes complete with operator’s manual. Ordering Example: TX12, RTD transmitter and PSR-24L, regulated power supply with

stripped leads.

N-35