♦ Long term stability and full range temperature compensation
♦The working temperature range is wide (- 40 ℃ ~ 85 ℃)
♦Multi parameter selection of temperature range
♦Easy to install, wall mounted, rail mounted,high level of dust protection (IP65)
♦LCD display (optional) and self replaceable probe
Item No :
SCH-RS485Order(MOQ) :
5Payment :
T/TProduct Origin :
ChinaRS485 4-20mA temperature and humidity sensor
The temperature and humidity transmitteradopts high precision temperature humidity integrated chip. The temperature is measured by using diode temperature sensing p-n junction, and the forward step-down changes with temperature under constant current. Humidity is measured by humidity sensitive capacitance, which changes with the change of humidity. The temperature and humidity are compensated for each other, and then amplified into standard digital or analog signals of relative humidity and temperature through amplification circuit.
Technical Specification
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Specification |
With display |
Without display |
|
Measuring medium |
gas (compatible with contact material) |
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Overall material |
ABS engineering plastic for main shell |
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Filter (contact) |
polyethylene (density 50 μ m) |
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Cable locking head nylon |
locking wire diameter 5-8mm) |
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Display |
LCD with backlight |
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Temperature range |
- 40 ~ 0 ~ 125 ℃ (Note 1) |
|
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Humidity range |
0-100% RH (relative humidity) |
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Supply voltage |
24VDC (current / voltage output) 12-24vdc (RS485 output) |
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Output signal: |
RS485, 4-20mA, 0-10vdc |
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Response frequency |
≤ 2Hz |
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Response speed |
10 ℃ for temperature and 10% RH for humidity, The gas flow rate is 0.1m/s. |
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Working conditions |
ambient temperature - 40 ~ 85 ℃ |
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Ambient humidity |
5% - 95% RH |
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Stability |
± 1% RH FS / year ± 0.2 ℃ / year |
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Seismic performance |
5g (20... 2000Hz) |
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Overall weight |
≈ 160g |
≈ 138g |
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Protection grade |
Protection grade |
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Power range(US = supply voltage) |
Current mode ≤0.05Us(W) Digital type ≤0.015Us(W) Voltage type ≤0.015Us(W) |
≤0.06Us(W) ≤0.025Us(W) ≤0.025Us(W) |
|
Load characteristics |
current type load ≤ {(us-12) ÷ 0.02 (US = supply voltage)} Ω |
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Voltage type load |
≥ 100k Ω |
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Product Display
FAQ
Can I get some samples?
Yes, Sample order is available for quality check and market test. But you have to pay the express cost.
What's delivery time?
It usually takes about 3-5 working days for small order and 10-15 days for big order.
How to solve the quality problems after sales?
Take photos or videos of the problems and send to us.
We will make a satisfied solution for you within 24 hours after we confirm the problems.
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Email : sales@schwahrtechnology.com
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