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Home > Products > Environmental Monitoring > Humidity & Temperature > TJ-138A Series Premium Temperature Transmitter
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TJ-138A SeriesHardcovertemperature transmitter
Provides a flexible and reliable solution for any temperature measurement condition
The TJ-138A smart temperature transmitter adopts a signal transmission module with dedicated integrated circuit and surface packaging technology, and integrates a transient voltage-resistant terminal block. It meets the Level 4 standard (differential mode voltage: 2000V, common mode voltage: 4000V) and is suitable for severe surge voltage situations.
■ Using high-precision A-level temperature core, high precision and good stability
■ The transmission module will not drift due to time, and the intelligent transmission has high accuracy.
■ 4-20mA, 0-10V, 0-5V various analog signal outputs optional
■ Can choose RS-485, RS-232 and other communication methods to work
■ The product adopts a wall-mounted waterproof shell, which is easy to install and has a high protection level.
■ Two-wire 4-20mA, can save a lot of cable applications and reduce transmission interference
Application fields
■ Smart agricultural greenhouse
■ Flower culture
■ Edible fungi cultivation
■ Breeding pen
■ Aquarium
■ Exhibition halls and museums
■ Conference center
■ Indoor stadium
All prices are pre-tax prices in RMB and do not include 13% VAT or shipping!
| DC power supply (default) | DC10-30V |
| Maximum power consumption | 0.15W |
| Measuring Range | -50~200℃ |
| Class A accuracy | temperature measurement Accuracy: ±0.3%FS+0.1℃ |
| Long-term stability: <0.15%F· S | |
| Class B accuracy | temperature measurement Accuracy: ±0.5%FS+0.5℃ |
| ( default ) | Long-term stability: <0.25%F· S |
| Annual stability | Better than 0.05% of the upper limit of the range or 0.1°C/year, whichever is greater @ under calibration conditions |
| Transmitter circuit working temperature and humidity | -40℃~+60℃, 0%RH~80%RH |
| Probe operating temperature | -40℃~+200℃ |
| Probe working humidity | 0%RH-800%RH |
| Data update time | 2s |
| System warm-up time | 1min (available), 2min (maximum accuracy) |
| Response Time | Class A precision sensor: generally less than 35S for 90% step change |
| Class B precision sensor: 90% step change is generally less than 50S | |
| Load impact | ≤±0.02% upper limit of range/100Ω (data refers to full-scale output 20mA) |
| Performance standards | GB/T30121/IEC60751; reference conditions: range starting from zero, 4-20mA analog output, end base fine-tuned to set value |
| Output Signal | 4-20mA, 0-5V, 0-10V, RS485(Modbus protocol ) |
| Mounting Type | Wall-mounted |
DOWESTON · 13 years of measurement excellence · global process instrumentation brand
DowestonPrecision measurement & control instrument manufacturer
Service Hotline+1 (314) 325-4420
E-mailinfo@doweston.com
Address617 Cepi Drive, Chesterfield, MO 63005, USA
Tell us about your measurement task and we will help with product selection and technical questions.info@doweston.com
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