The DT4120 … Resistance Thermometer enable process temperature or resistance value to be displayed on the control panel Pt100 / Pt500 / Pt1000 temperature sensor, resistor or potentiometer can be connected to the input of the instrument, either with 2, 3 or 4 wire.
Large 5 digit, 14.2 mm character height LED display make process value easily visible at a distance.
The instrument is available with the following output options:
(* either analogue or communication or transmitter supply option can be implemented at the same time)
The functional parameters can be set by push-buttons on the front panel of the device, through a simple menu system: input selection, averaging of input signals, scaling, display frequency, limit values, limit operating modes, scaling the analogue output, etc. The settings are protected by a two-level password against unauthorised manipulation.The thermometer able to calculate with three sensor calibration point, to fit the real sensor curve to the instrument. The instruments has two power supply versions: 24 VDC ±10% (DT4120 …) or 230 V AC/DC ±10% (DT4120 … PS).
The DT4120 … is housed in a DIN standard 96 × 48 mm ABS case with IP 65 protection from the front and IP 30 protection from the back side, for installation on the control panel.
| Safety data: | |
|---|---|
| The connection terminals of the supply voltages are isolated from each other, the isolation is in compliance with the standard EN 61010-1, taking into consideration the following: | |
| Pollution level: | 2 |
| Measurement category: | II |
| Input parameters: | |
| Input signal: | Pt100 / Pt500 / Pt1000, resistance, potentiometer |
| Measurement range: | -200 - +800 °C / 0-4000 Ohm |
| Connection: | 2, 3 or 4 wire |
| Sampling: | 12 measurement / sec. |
| Number of averaged samples: | 1 / 2 / 4 / 8 / 16 / 32 / 64 (selectable) |
| Error of displayed value: | < 0.2 °C (Ta = 23 °C ± 2 °C) |
| Output parameters: | |
| Analogue output (optional): | |
| Output type: | 1 active or passive DC current (scalable) |
| Range: | 0-20 mA / 4-20 mA |
| Burden: | 500 ohm (max.) |
| Error: | < 0.03% (Ta = 23 °C ±2 °C) |
| Limit outputs (optional): | |
| Outputs: | 2 NO SPST relays |
| Contact rating: | 30 VDC, 3 ADC / 240 VAC, 3 AAC |
| Transmitter supply (optional): | |
| Output voltage: | 15 VDC ±10% @ 30 mA, 16 VDC ±10% @ 4 mA |
| Output current: | 30 mA max. |
| Isolation voltage: | 0.5 kV |
| Communication interface (optional): | |
| Type: | RS232 or RS485 (isolated) |
| Protocol: | Modbus RTU slave |
| Baud rate: | 300 / 600 / 1200 / 2400 / 4800 / 9600 Baud |
| Display: | |
| Display: | 5 digit (+ values), 4 digit (- values), negative sign, decimal point |
| Display unit: | 5 digit LED, 14.2 mm character height |
| Manual controls: | |
| Manual controls: | 3 membrane push-buttons on the front cover |
| Power supply: | |
| Power supply: | 24 VDC ±10% (DT4120 ...) 230 V AC/DC ±10% (DT4120 ... PS) |
| Consumption: | 3.5 W / 3 VA |
| Ambient conditions: | |
| Operating temperature range: | 0 - +60 °C (-20 - +60 °C for customer request) |
| Relative humidity: | 90% (max., non-condensing) |
| Place of installation: | cabinet |
| Electromagnetic compatibility (EMC) accordance with the standard EN 61326-1 |
|
| Immunity: | industrial area |
| Noise emission: | Group 1, Class B |
| General data: | |
| Housing: | panel instrument |
| Connection: | plug-in screw terminal / push-in direct connection |
| Connection cable: | 0.25-1.5 mm2 (max.) |
| Dimensions | 96 × 48 × 45 mm (width × height × depth) |
| Weight | 0,15 kg |
| Protection: | IP 65 (front), IP 30 (rear) |
| Detailed information see in operating instructions. The Manufacturer maintans the right to change the technical data! | |
| Leaflet of product | Operating Instruction |
Analog output option:
RS232 communication interface option:
RS485 communication interface option:
RS485 bus topology:
