Product Specification Book
Product Name: | Current type temperature and humidity transmitter |
Product model: | BTH-5 series |
Version: | V1.0 |
Formulator: | He Genwen |
Reviewer: | Yuan Chao |

Modify the record table:
Version | Change content | Change people | Change date |
V1.0 | New | He Genwen | 2020-4-24 |
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1. Product Description:
This product has good temperature compensation characteristics, uses professional imported moisture-sensitive capacitors, and has long-term stability, high reliability and high accuracy. It is widely used in HVAC automatic control, computer room monitoring, medical and other fields;
2. Performance indicators:
| temperature | humidity |
Measurement range | -20 ~ 80℃(Settings available ) | 0~100%RH |
Accuracy | ±0.5℃ (-10℃ ~ 60℃) See the figure on the right | humidity: ±3%RH (-20% ~ 80% ,@25℃) See the figure on the right |
Long-term stability | <0.2℃ /Year (Work under normal circumstances ) | <2%RH/Year (Work under normal circumstances ) |
Signal output | 4-20mA |
Power supply | +13.5~24V DC |
Operating temperature | -20~80℃ |
Storage environment | -40 ~ 80℃ (Non-condensation ) |
Connection method | 4 Bit-free terminal spacing: 5.08 mm |
3. Accuracy


Figure 1 Dial switch direction ON For 1
Table 2
6. Power-on process (If the display module is not included at the factory, the transmitter will not display information. )
The transmitter is powered on for 0.5 seconds, and the display will not be displayed. After 0.5 seconds, the display will be fully lit and the display status will be detected.After 0.5 seconds, the temperature range code is displayed tEP;0.5 Display customer custom code in seconds Fad ; If the transmitter is faulty, the fault code will be displayed Err , If the transmitter is in normal state, there is no error code Err Display, directly enter the temperature and humidity display mode.
7. Display code description: (If the display module is not included at the factory, the transmitter will not display information. )
tEP : Indicates the current encoder setting of the transmitter
Humidity range, the value is from 000-007, see Table 2 for details.
FAd : Indicates the transmitter customer customized code, value
From 000-999, the standard version code is "000".
Err: Fault code.When 005 is displayed, it means transmission
Sensor cable disconnects or sensor failure
8. Wiring method

9. Appearance size:

10. Things to note
1、Please read this manual carefully before use to ensure the wiring is correct.This product has anti-reverse connection protection measures, but incorrect wiring that exceeds the rated parameters for a long time will still cause product failure.
2 、Please install it in a place where air circulation is circulated and away from areas where local heating is generated.
3、Prevent chemical reagents, oils, dust, etc. from directly invading the sensor
4、The transmitter will cause offsets when used for a long time. To ensure measurement accuracy, it is best to calibrate once a year.
5、Try to stay away from high-power interference equipment to avoid measurement errors, such as frequency converters, motors, etc.