| #93 In-line Pre-Calibrated Transmitter for Easy, Reliable Installation |
| Model t/c.XMTR- * - ** 4-20 mA Transmitter |
| Current loop transmitters for thermocouples have traditionally been designed as "hockey pucks" in order to fit thermowell heads, thus complicating installation for applications not using a thermowell, and requiring a housing for protection. Additionally, they generally have to be calibrated to a specific range, usually with thermo- couple simulators or other such device, thus requiring significant set up time and the possibility of unauthorized recalibration. |
| The t/c.XMTR is designed to overcome both of the costly inconveniences |
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In-line design is only slightly larger than the cable and requires no mechanical support. |
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Precalibrated for thermocouple type and temperature range eliminates all adjustments, requirements for simulators, etc. |
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Hermetically sealed stainless steel construction is suitable for the harshest service without any additional packaging. |
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| The t/c.XMTR is specifically designed to interface to any model IRt/c (or any conventional thermocouple) by a simple thermocouple connector or splice. The 2-wire current loop can be used in any conventional current loop circuit that is scaled for the temperature range of interest. |
| Model Selection |
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Select the correct IRt/c model for the application: target temperature, target material, field-of-view. |
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Select the t/c.XMTR model for the t/c type and temperature range from the table below. Example: t/c.XMTR-K150 |
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| Installation |
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Install IRt/c as normal. |
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Connect IRt/c output cable to the thermocouple input side of the transmitter using standard t/c connector, splice, or other standard method of connecting thermocouple cables. Transmitter should be located in a an environment no higher than 158°F (70°C) in temperature. Additional t/c extension wire may be added as required. Use of twisted shielded t/c wire is recommended (same as on the IRt/c and transmitter), and maintain shield connections. |
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Check load on transmitter and power supply voltage for correct range (10 VDC minimum @ 10W; to 22 VDC minimum @ 1KW). 4. Set readout device (controller, computer, PLC, etc.) for 4 to 20 mA range to match the t/c.XMTR model range. |
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Set readout device (controller, computer, PLC, etc.) for 4 to 20 mA range to match the t/c.XMTR model range. |
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Perform final calibration of IRt/c installation in accordance with IRt/c instructions, using offset on current loop readout device. |
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Installation complete. |
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Model Numbers
Example: t/c.XMTR-J-150 |
J150
K150 |
J500
K500 |
J1200
K1200 |
K2000 |
S3000 |
| Temperature at 4 mA |
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32 °F |
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| Temperature at 20 Ma |
150°F
(65°C) |
500°F
(260°C) |
1000°F
(540°C) |
2000°F
(1100°C) |
3000°F (1650°C) |
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