Product Overview:
HT218M LCD isolation intelligent temperature transmitter is used for RTD, thermocouple (TC), resistance (Ω), signal input, two-wire system 4-20mA analog output, and the configuration is via RS485 (MODBUS RTU protocol) or HART protocol.
Features:
- Input signal supports 2 RTDs, 10 thermocouples
- Input signal is fully switchable
- 4~20mA output, RS485,HART optional
- Thermocouple cold end compensation
- Response time≤700mS
- Input and output isolation, good anti-interference effect
Parameters:
| Input signal |
RTDs and thermocouples |
| Cold-end compensation temperature range |
-20~70ºC |
| Compensation accuracy |
±1ºC |
| Output signal |
4~20mA, or 4~20mA plus HART protocol |
| Load resistance |
RL≤(Ue- 14)/0.021 |
Overflow alarm output current
at the upper and lower limits. |
IH=21mA, IL=3.8mA |
| Power supply |
DC16~40V |
| Temperature drift |
0.015%FS/ºC |
| Response time |
reaches 90% of the final scale within 1s |
| Ambient temperature in use |
-20~70ºC |
| Dielectric strength |
1500Vrms(in 1 min) |
| electrical insulation resistance |
>=100MΩ (500VDC) |
| Input type and transmission accuracy |
| Input |
Code |
Type |
Measuring temperature Range |
Min. measuring range |
Conversion accuracy (whichever is greater) |
| RTD |
Pt100 |
Pt100 |
-200.0~850.0ºC |
20ºC |
±0.1%FS or ±0.2ºC |
| Cu50 |
Cu50 |
-50.0~150.0ºC |
20ºC |
±0.1%FS or ±0.2ºC |
| TC(thermocouples) |
TC-B |
B |
400~1800ºC |
500ºC |
±0.1%FS or ±1.5ºC |
| TC-E |
E |
-100~1000ºC |
50ºC |
±0.1%FS or ±0.5ºC |
| TC-J |
J |
-100~1200ºC |
50ºC |
±0.1%FS or ±0.5ºC |
| TC-K |
K |
-180~1372ºC |
50ºC |
±0.1%FS or ±0.5ºC |
| TC-N |
N |
-180~1300ºC |
50ºC |
±0.1%FS or ±0.5ºC |
| TC-R |
R |
-50~1768ºC |
500ºC |
±0.1%FS or ±1.5ºC |
| TC-S |
S |
-50~1768ºC |
500ºC |
±0.1%FS or ±1.5ºC |
| TC-t |
T |
-200~400ºC |
50ºC |
±0.1%FS or ±0.5ºC |
| Note: |
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| 1. The above accuracy data is tested under the condition of ambient temperature of 20ºC±2ºC. |
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| 2. The output accuracy "%" is relative to the set range. |
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| 3. Thermocouple measurement also need to add the cold end compensation error, internal cold end compensation error ≤ ± 1 ºC. |
Structure Drawing:
Wiring:
Related Products:
Certification:
FAQ:
1. Q: Are you manufacturer or trading company?
A: We are manufacturer which focuses on sensor for 10 years.
2. Q: What's your quality control system?
A: MC, ISO9001, CE Certificated.
3. Q: What is the warranty of your products?
A: Our warranty time is 18 months after shipment.
4. Q: What is lead time of your product?
A: Normally, our factory lead time is within 10~15 working days for products without customization. You can also check lead time detail with our sales depending on different items.
5. Q: Do you provide customized products?
A: Yes, we can laser mark your logo on products; OEM and ODM customization are welcomed.
6. Q: What is your MOQ?
A: We have no MOQ limit, small quantity order is acceptable.
7. Q: What's the transport?
A: Express such as DHL, FedEx, TNT, UPS for freight prepaid; and we can also use your own courier account to do the freight collect. For more goods we can arrange by air or by Sea.
8. Q: What is your terms of payment ?
A: We could accept T/T, Paypal, WU.
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