Digital Ambient Temperature Sensor Ta-ext-RS485-MB
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Products code
: Ta-ext-RS485-MBBrands
: Ingenieurbüro Mencke & TegtmeyerOrigin
: ĐứcProducts status
: Mơi 100%Product Price
: Liên hệ
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Digital Ambient Temperature Sensor Ta-ext-RS485-MB
Safety Instructions
The installation and assembly of electrical equipment must be carried out by electrically qualified persons.
The sensor may not be used with equipment whose direct or indirect purpose is to prevent death or injury,
or whose operation poses a risk to humans, animals or property
Warranty and Liability
The sensor is designed for the measurement of ambient temperatur. The warranty is for 1 year from the date of the invoice for the intended use. IMT Technology does not accept any liability for possible losses or damage due to the incorrect usage of the sensor. Liability for consequential damages is excluded
Mounting Instructions
If mounted outdoors, avoid direct exposure to sunlight and rain to the sensor housing (INOX steel tube). If necessary, provide protection from the sun and rain with the optional Shield-Tamb-Si.
The through holes used to fix the sensor to a stable and suitable surface shall be accessible when the housing is opened. The tightening torque of the case cover is 180 Ncm.
When installing the sensor, the cables must be routed downwards from the housing.
Electrical Connection
The sensors are designed for safety extra-low voltage (SELV) operation. The maximum power of the voltage
supply is 50 VA(“Class 2 limited power”).
The cable shield shall be connected to the PE during installation.
WARNING: Connecting the supply voltage to the signal lines will damage the device.
All MODBUS devices require the same bus parameter (baud rate, data format) but diąerent adresses.
Termination of RS485 bus usually is not needed.
Cable length
| Supply voltage | Cable cross section in mm² | ||||||
| 0.14 | 0.25 | 0.34 | 0.5 | 0.75 | 1.0 | 1.5 | |
| 24 VDC | 300 m | 600 m | 800 m | 1000 m | 1000 m | 1000 m | 1000 m |
| 12 VDC | 50 m | 100 m | 150 m | 200 m | 300 m | 400 m | 650 m |
Maximum additional cable length of sensors with 6 m connection cable at 24 VDC and 12 VDC supply voltage
| Note: | If more sensors are supplied by the same voltage supply, the possible cable length is reduced accordingly. Example: 3 sensors at 24 VDC and cable 0.14 mm: 300 m / 3 = 100 m |
Maintenance
Scope of the regularly check (at least once a year): Cleaning, external damage, mechanical fastening, cable laying and any
damage to the cable. Should damage be found that degrades the function or safety, the sensor is to be replaced.
A recalibration is recommended at least every 3 years.
Technical Data
| Output signal | RS485 |
| Measurement range | -40 to +90°C |
| Uncertainty (-40 to +80°C) | 1 K |
| Supply voltage | 24 VDC (10 to 28 VDC) |
| Current consumption | Typical 25 mA at 24 VDC |
| Galvanic insulation | 1000 VDC between voltage supply and RS485 |
| Sensor element | Pt1000 class A as per EN 60751 |
| Sensor element housing | INOX stell tube, diameter 6 mm, length 23 mm |
| Sensor cable (Pt1000) | Length: 3 m, PUR coated, shielded (LiYC11Y, 2 x 0.25 mm²) |
| Case material | Powder coated aluminium |
| Case dimension / protection level | 98 mm x 64 mm x 34 mm / IP 67 |
| Weight | 500 g |
| Operating temperature | Sensor element -40 to +90°C (see below installation instruction) Case -40 to + 80°C |
| Electrical connection | Length: 6 m, PUR coated, shielded LiYC11Y, 4 x 0.14 mm² |
| Protocol | Bus parameter (default) | Note |
| Modbus (RTU) | Address: 1 Baud rate: 9600 baud Format: 8N1 |
Settings can be changed with „Si Modbus Configurator“ software. Maximum baud rate: 38400 baud |
Dimensions
Scope of Delivery
· Sensor incl. pre-assembled connecting cable
· Calibration certificate for measurement electronic
· Instruction sheet
