STT171 intelligent temperature transmitter
4 ~ 20mA output, only thermal resistance input
Product Description:
The STT171 intelligent temperature transmitter provides an economical solution for temperature detection applications. The STT171 is more accurate, safe and reliable, and reduces the cost of wiring compared to the directly connected temperature measuring points. The temperature signal output of this temperature transmitter is automatically linearized within the upper and lower limits set by the user. In addition, users can program high - and low-limit alarm points and make them alarm if the sensor fails.
Product features:
Analog output 4~20mA
Sensor fault signals comply with NAMUR NE43
Use STT17C configuration tool and PC to configure it
Thermal resistance or resistance value input
Type B DIN rail or head mount
Performance index
1、Working condition：
Sensor type | Basic accuracy1 | Rated range | Standard | Minimum range2 | The temperature effect of every 1.0℃ change in ambient temperature 3 | ||
| Fixed value | Range-based% | ℃ | ℃ | Fixed value | Range-based% | ||
| Ambient temperature1 | 0.15℃ | ±0.1 | -200~+850 | IEC60751 | 25℃ | 0.01℃ | ±0.1 |
| Capsule temperature | 0.3℃ | ±0.1 | -60~+2 50 | DIN73460 | 25℃ | 0.01℃ | ±0.1 |
| Relative humidity%RH | 0.2Ω | ±0.1 | 0~+1000 | 30Ω | 20mΩ | ±0.1 | |
1. Select a larger value, the overall reference accuracy = basic accuracy
2. Or 50% of the upper limit value of the range, choose a larger value
3. Reference temperature 24 ° C
2、Specification parameter ：
| Operating condition | |
Ambient temperature (rated) | -40~85 |
| Humidness | 0~95%RH |
| Preheating time | 5min |
| Response time (configurable) | 0.33~60s |
| Current output characteristic | |
| Signal output range | 4~20mA |
| Refresh time | 135ms |
| Loop resistance | ≤ (power supply voltage -8) /0.023A 0~870Ω |
| Give an alarm | |
| configurable | The lower limit is 3.5 to 4mA and the upper limit is 20 to 23mA |
| NAMUR NE43 Upper limit | 23mA |
| NAMUR NE43 Lower limit | 3.5mA |
| Ex certification | |
| KEMA 06 ATEX 0042 X | Ⅱ I GD，T80℃ …T105℃ EEX ia Ⅱ C T4…T6 |
| T4 Maximum ambient temperature | 85℃ |
| T6 Maximum Ambient temperature | 60℃ |
| Application area | 0，1，2，20，21,22 |
| Ex data | |
| Ui（max） | 30VDC |
| Ii（max） | 120mADC |
| Pi（max） | 0.84W |
| Li（max） | 10μH |
| Ci（max） | 10nF |
| UO（max） | 27VDC |
| IO（max） | 7mADC |
| PO（max） | 45mW |
| LO（max） | 34mH |
| CO（max） | 90nF |
Product size
