Overview
The thermistor input temperature converter with surge protection function can convert the Pt100 signals of two wire and three wire thermistors (RTDs) into a 1:1 signal of the thermistor. It can be intelligently configured, and the actual range of the thermal resistance can be set through computer software.
This product requires independent power supply, with isolated power supply, input, and output terminals.
Specifications
| Input | |
| Input signal | Two wire or three wire Pt100 signal |
| Measurement range | -200℃-850℃ |
| Output: | |
| Output signal | RTD Pt100 signal |
| Load capacity | Load capacity 0-500 Ω (customizable) |
| 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) |
| Supply voltage | 20-35VDC |
| Power consumption | <1.1W(when 24VDC power supply) |
| LED indicator | Green: Power indicator Short circuit alarm: ALM red light stays on for a long time Open circuit alarm: ALM red light flashing |
| Output accuracy | 0.1%F.S |
| Temperature drift | 0.1%F.S/10℃ |
| Temperature parameters | Working temperature: -20℃~+60℃, storage temperature:-40℃~+80℃ |
| Relative humidity | 10%~95% RH no condensation |
| Insulation strength | ≥2000VAC/min (between input/output/power supply) |
| Insulation resistance | 100MΩ(500V DC) (between input/output/power supply) |
| Electromagnetic compatibility | According to IEC 61326-1(GB/T 18268), IEC 61326-3-1 |
| MTBF | 800000h |
| Wire requirements | Horizontal cutting surface ≥ 0.5mm2; Insulation strength ≥ 500V |
| Applicable field equipments | Two wire or three wire RTD Pt100 |
Dimension
Schematic diagram
Note:
1. 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"
2. When inputting a three wire RTD, it is necessary to ensure that the three wires are of equal length as much as possible
3. When inputting a two-wire RTD, safety barrier terminals 5 and 6 must be short circuited
