- 2-wire universal transmitter (DIN-mount, isolated)
- Accepts current, voltage, thermocouple, RTD and potentiometer input
- Loop powered, 4-20mA output
- LED indicator for error notification
- USB port for PC programming (requires TM-USBcommunications kit)
- Potentiometer for fine offset adjustment of current output
This is the market's first USB powered programmable DIN-mount transmitter from Define Instruments. It is extremely easy to program by anybody from only the USB port of a PC and do not require additional power connected. This means your own technicians can program these easily and effortlessly on site or at your workshops. Define Instruments´s TM - 2DLI universal transmitter features:
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Define Instruments’s TM transmitters convert the sensor input signal to a current or voltage output, where it can then be displayed or controlled by a variety of industry standard compatible devices. The TM-2DLI universal transmitter accepts a wide range of standard input types without the use of jumpers and are available in DIN-rail mount or head-mount casing. This model includes a trim potentiometer for fine field adjustments and a status LED for current loop indication and sensor error notification. A reusable USB communications kit can be added to enable PC interface, using purpose-built, windows compatible software. | |
| Common Specifications | |
Configuration | 2-wire 4~20mA (loop pwr) |
| Power supply | 9.5–36V DC |
| Supply voltage sensitivity | < ±0.005%/V FSO |
| Accurate to | <±0.03% FSO typical |
| Ambient drift | <±0.003%/°C FSO typical |
| Output load resistance | 700Ω at 24V DC (50Ω/V above 9.5V DC) |
| Maximum output current | Limited to <28mA (Emission & immunity) |
| EMC complicance | Emissions (EN 61326). Immunity (EN 61326). Safety (EN 61010-1). |
| Noise immunity | 125dB CMRR average (2.0kV DC limit) |
| R.F. immunity | <1% eff ect FSO typical |
| Isolation test voltages | between input/output: 3750V AC for 1min |
| Response time | 400msec typical (10–90% 300msec typical) |
| Operating temperature | –20–+85°C |
| Storage temperature | –20–+100°C |
| Operating humidity | 5–85%RH max (non-condensing) |
| Mounting | 35mm symmetrical DIN rail |
| Dimensions | 79 x 20 x 68mm (H x W x D) |
| Voltage Input Specifications | |
| USB programmable zero | 0–±99% of the span |
| USB programmable span 100mV | to +/-10V DC (bipolar) |
| Input resistance | 300kΩ min |
| Maximum over-range | 60V DC continuous |
| Linearity and repeatability | <±0.02% FSO typical |
| Current Input Specifications | |
| USB programmable zero | 0–±99% of the span |
| Field programmable span | 1µA–24mA DC |
| Input resistance | 10Ω |
| Maximum over-range | 50mA DC continuous |
| Linearity and repeatability | <±0.02% FSO typical |
| Thermocouple Input Specifications | |
| Thermocouple types | B, E, J, K, N, R, S, T |
| USB programmable zero | 0–±99% of the span |
| Field programmable span | Refer to ordering information for min/max ranges for each type |
| Input impedance | 1MΩ min |
| Thermocouple lead resistance | 100Ω max |
| Cold junction comp. | –20–+90°C |
| Accuracy | E, J, K, N, T: < ±1°C. B, R, S: < ±2°C. |
| Temperature drift | E, J, K, N, T: < ±0.05°C. B, R, S: < ±0.2°C. |
| Sensor break output drive | Function high upscale/low downscale |
| CJC error | < ±1°C |
| RTD Input Specifications | |
| RTD input | Pt100 or Pt1000 DIN 3-wire type (2-wire can be used with off set calibration) |
| Sensor current | 0.15mA nominal |
| Lead wire resistance | Pt100: 10Ω/wire max. Pt1000: 5Ω/wire max. 0.02% FSO off set error per Ω of lead resistance. |
| USB programmable zero | 0–±99% of the span |
| USB programmable span | –200–+850°C |
| Linearity (Pt100) | 0.02% FSO for span inputs ≤200°C. 0.1% FSO for span inputs ≤850°C |
| Linearity (Pt1000) | 0.02% FSO for span inputs ≤200°C. 0.2% FSO for span inputs ≤520°C |
| Other available RTD types | JIS, Pt100/1000, Pt392, Cu10 |
| Potentiometer Input Specifications | |
| Potentiometer input | 3-wire potentiometer |
| Excitation | voltage 1.2V DC |
| Input resistance | 300kΩ min |
| Maximum over-range | 60V DC continuous |
| Linearity and repeatability | <±0.02% FSO typical |
