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The TROJ transmitter from COMECO is part of a new project for a budget temperature transmitter with a fixed input. Pt100 resistance thermometers and 8 different types of thermocouples can be connected to the input, and the output can be current or voltage, 2- or 3-wire. This model allows programming of the conversion range and direction, as well as the output response to input failure, without the need for user calibration. TROJ is available in different housings: for installation in a thermal probe protective head, in a high protection or Ex box, as well as in a DIN rail mounting housing. The serial interface allows for quick and easy programming using the “TraCon” software. Thanks to the combination of capabilities, reliability, simplicity, flexibility and low cost, the TROJ transmitter is easy to service and widely applicable to replace old analog models.
The TROJ transmitter is widely used in:
| Монтаж | DIN rail, In box IP65, In head, In Ex housing |
|---|---|
| Корпус | 80x80x60 mm, ø44×19 mm |
| Захранване | 10…32VDC (I – output), 13…36VDC (U – output) |
| Аналогов вход | RTD Pt100 – 1.385, Thermocouple (TC) B, Thermocouple (TC) E, Thermocouple (TC) J, Thermocouple (TC) K, Thermocouple (TC) N, Thermocouple (TC) R, Thermocouple (TC) S, Thermocouple (TC) T |
| Аналогов изход | 0…1 V, 0…10 V, 0…2 V, 0…20 mA, 0…5 V, 4…20 mA, Other |
| Интерфейс | RS232 |
| Input (programmable) (1) |
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| Pt100 (w=1.385); 3-wire | min. -200…max. 600 °C | |
| Thermocouple “B” | min. 200…max. 1800 °C | |
| Thermocouple “E” | min. -20…max. 600 °C | |
| Thermocouple “J” | min. -20…max. 900 °C | |
| Thermocouple “K” | min. -20…max. 1200 °C | |
| Thermocouple “N” | min. -20…max. 1200 °C | |
| Thermocouple “R” | min. 0…max. 1700 °C | |
| Thermocouple “S” | min. 0…max. 1700 °C | |
| Thermocouple “T” | min. -40…max. 400 °C | |
| Input / output conversion | direct or reverse, programmable | |
| Minimum programmable span | ∆t ≥ 50°C | |
| Output (6) | ||
| Option | ‘2’ | ‘3’ |
| Voltage | – | 0…1/2/5/10 V |
| – minimum load | – | 1 MΩ |
| Current | 4…20 mA | 0(4)…20 mA |
| Maximum load | 800 Ω at 24V/20mA | 750 Ω at 24V/20mA |
| Sensor failure reaction | 20.2 mA, programmable | below or above range, programmable |
| Accuracy | ||
| Measurement error | 0.2% from span (≥0.2 °C) | |
| Self-heating error | 0.005%/mA at 24 V | |
| Non-linearity | within measurement error | |
| Temperature drift | 0.01% from span for 1 °C | |
| RTD 3-wire line compensation | up to 25 Ω per wire | |
| Power supply | ||
| Loop supply voltage | 10…32VDC (I – output) 13…36VDC (U –output) |
|
| Admissible variations | 1 Vp-p at 50Hz | |
| Interface | ||
| Interface type | RS232-based | |
| Physical connection | requiring special cable (2) | |
| Configuration software | TraCon, free | |
| Operating conditions | ||
| Ambient temperature | -20…70 °C | |
| Ambient humidity | 0…95 %RH, non-condensing | |
| Design and materials | |||
| Case material | plastic | ||
| Wiring | screw terminals | ||
| Mounting | in head (3,4,5) | on DIN rail | in box (4) |
| Interface connector | 4-pin | 3-pin | 4-pin |
| Interface cable type(2) | K1, K11U | K2, K12U | K1, K11U |
| Dimensions [mm] | ø44×19 | 18x90x58 | 80x80x60 |
| Weight | 25 g | 90 g | 170 g |
| Protection class | IP20 | IP20 | IP65 |
(1) Factory programming is available. Specify the lower and upper span limits when ordering.
(2) Ordered separately.
(3) Head type “B” or any other with 33 mm distance between centers of the female threaded openings.
(4) May be mounted on rail by a special snap-on accessory, which is ordered separately (see ‘Accessories’).
(5) May be mounted in different, separately ordered Ex housings for field applications (see ‘Accessories’).
(6) For 2-wire output line, output signal can only be 4…20mA (G11 = F).
