Overview
The RTD input temperature converter with surge protection function can convert the two wire or three wire thermistor (RTD) signals into DC current signals. It can be intelligently configured, and the actual range of the thermal resistance can be set through computer software. It has the functions of wire breakage alarm and out of range alarm.
This product requires independent power supply, with isolated power supply, input, and output terminals.
Technical Data
| Input | |
| Input signal | Two wire or three wire thermistor signals (see "Input Signal Type and Range Table" for details) |
| Input disconnection | The default "low alarm" can be modified to "high alarm" through configuration software |
| Signal range | Corresponding measurement range of thermal resistance |
| Measurement range | Users make their own configuration when ordering, and indicate it at the tail number or otherwise. |
| Excitation current | 800μΑ |
| Output: | |
| Output signal | DC signal (current/voltage) |
| Output load capacity | |
| Surge protection features: | |
| Nominal discharge current ln(8/20μs) | 5kA |
| Voltage protection level Up(8/20μs): | 60V(line to line) |
| Voltage protection level Up(8/20μs): | 600V(line to ground) |
| According to standards | GB/T18802.21-2016(equivalent to 1EC61643-21:2012) |
| Power consumption | Current output <0.8W; voltage output <0.6W (PHG-11TZ+) Current output <1.2W; voltage output <0.6W (PHG-12TZ+) |
| LED indicator | Green: Power indicator Low range alarm L1 light on, high range alarm L2 light on |
| Output accuracy | Please refer to the "Input Signal Type and Range Table" for details |
| Response time | Reaching 90% of the final value within 300ms |
| Temperature drift | 0.005%F.S/℃ |
| Temperature parameters | Working temperature: -20℃~+60℃, storage temperature:-40℃~+80℃ |
| Relative humidity | 10%~95% RH no condensation |
| Dielectric strength | ≥ 2000VAC/min (between input/output/power supply) |
| Insulation resistance | 100MΩ (500VDC)(between input/output/power supply) |
| Electromagnetic compatibility | GB/T 18268(IEC 61326-1) |
| MTBF | 80000h |
| Wire requirements | Horizontal cutting surface ≥ 0.5mm2; Insulation strength ≥ 500V |
| Applicable field equipments | Two wire or three wire thermistors G53, Cu50, Pt100, Pt1000, Ni1000 |
Dimension
Schematic diagram
Note:
1. PHG-11TZ+ does not include output part 2
2. The power rail function is an optional function, and users need to specify the power supply method when placing an order
The selection of power rail connectors can refer to page 89 of the "Annex"
3. When inputting a three wire RTD, it is necessary to ensure that the three wires are of equal length as much as possible
4. When inputting a two-wire RTD, safety barrier terminals 4 and 2 must be short circuited
| Input signal types and measurement range | ||||
| Code | RTD model | Measurement range | Minimum range | Conversion accuracy |
| 1 | G53 | -50~150℃ | 20℃ | 0.2℃/0.1% |
| 2 | Cu50 | -50~150℃ | 20℃ | 0.2℃/0.1% |
| 4 | Pt100 | -200~850℃ | 20℃ | 0.2℃/0.1% |
| 6 | Pt1000 | -200~850℃ | 20℃ | 0.2℃/0.1% |
| 7 | Ni1000 | -60~250℃ | 20℃ | 0.2℃/0.1% |
| Output parameter definition | |
| Code | Parameter |
| 1 | 4~20mA |
| 2 | 0~20mA |
| 3 | 0~5V |
| 4 | 0~10V |
| 5 | 1~5V |
| 6 | 0.042361111 |
| 7 | 土10V |
| 8 | customized |
For example: one input and two outputs, RTD Pt100 (-200~850°C) input, two channels 4~20mA outputs, 24V power supply, model: PHG-12TZ-411+