Sentec SEM254 Duct temperature and humidity transmitter
MAIN FEATURES
Support AC and DC power supply, can be applied to four-wire and three-wire
connection at the same time;
Temperature accuracy ±0.3 ° C, humidity accuracy ± 3% RH, high precision, low
drift;
-40 80°C, -35 35°C, -35 50°C, 0 50°C and other temperature range dialing
settings, the site can be freely changed, other ranges can also be customized;
The use of dedicated EMC anti-interference devices, the site can withstand strong
electromagnetic interference, industrial-grade processing chips, a wide range of
use;
The terminal block adopts the military-grade spring-type screw-free terminal,
which can be connected by one press and one plug. The wire can be quickly
connected even if there is no screwdriver at the site, and the wire diameter can be
adjusted to 0.3~2.0mm.
SPECIFICATION
| Items | Parameter | |
| DC power supply (default) | DC 10~30V (0~10V output type can only be powered by 24V) | |
| Maximum power consumption | Analog output | 1.2W |
| RS485 output | 0.1W | |
| Precision A (default) | humidity | ±2%RH(5%RH~95%RH,25℃) |
| temperature | ±0.4℃ 25℃ | |
| Precision B (default) | humidity | ±3% RH (5% RH~95% RH, 25°C) |
| temperature | ±0.5°C (25°C) | |
| Long-term stability | humidity | ≤1%RH/y |
| temperature | ≤0.1°C/y | |
| Response time | humidity | ≤8s (1m/s wind speed) |
| temperature | ≤25s (1m/s wind speed) | |
| Output signal | Analog output | 4~20mA,0~5V/0~10V |
| Digital output | RS485 | |
| Load capacity | Current output | Output resistance ≤250Ω |
| Voltage output | ≤600Ω | |
| Transmitter circuit operating temperature and humidity | -40°C~+60°C, 0%RH~80%RH | |
| Probe operating temperature | -40°C~+120°C, default -40°C~+80°C | |
| Probe working humidity | 0%RH-100%RH |
