HW group HTemp-485 Box2
Combined temperature and humidity sensor for vertical wall mounting indoor usage
- Temperature measuring within the range of -10°C to +70°C
- Measuring the relative humidity within the range of 0% to 100%.
- Up to 25 sensors connected parallely at one bus
- Communication and sensor state indication
- Communication over the RS-485 line (up to 1 000 m distance), simple communication protocol
- Minimal power consumption, possible power supply by unstabilized voltage
- The sensor by itself can send a temperature value according to preset time interval, which can be from 1 to 5000 seconds (circa 1 hour and 23 minutes)
- The sensor address on RS-485 bus can be set by jumpers inside the sensor as well
- Easy wall mounting
- The sensor cooperates with Poseidon thermometer
Combined temperature and humidity sensor for vertical wall mounting indoor usage. Communication over RS-485 bus with a simple communication protocol. The sensor can be used separately but it was designed to be connected with the Poseidon family units.
HTemp-485 Box2 measures temperature and humidity, communicates over 4-wire bus and up to 26 sensors can be connected parallely to a single bus. The sensor is intended for indoor vertical wall mounting.
The busbar uses 4 wires, two with a standard RS-485 line, the other two are used for sensors´ power supply. The individual sensors can be powered by an external power source and can be connected by just two RS-485 line wires. RS-485 communication line works up to 1000m distance.
For temperature measuring the thermal sensor uses an integrated element with accuracy of ±0.8°C, humidity is as well measured by an internal sensor with accuracy 5%.
Application
- Extensive measuring systems with many measuring points
- Air-conditioning state measuring and measuring of living conditions in intelligent buildings
- Independent measuring in food warehouses and agricultural crops storage buildings
- Grocery storehouses and premises
- Temperature and humidity monitoring in pharmaceutical storages
- Measuring in residential premises
- Industrial measuring and regulation
- Poseidon model 2250 – temperature values transmission over Ethernet or Internet
- Poseidon model 2250 – logging possibility of up to 100 000 values into internal Flash memory
Sensor wiring
Conductors are connected over terminal or RJ45 connector. Both possibilities can be combined.
HTemp-485 Box2 temperature and humidity sensor can be connected to RS-485 bus in various methods:
- Direct connection over 4 conductors
For use in extensive storage buildings. It requires experience with RS485 bus. We recommend this option to very skilled users or installation companies. - RJ45
Sensors connection through S-Hub or one thermometer directly to RJ45 connector with RS-485 on Poseidon unit. - RJ45 / directly - Connection of more sensors via S-Hub
You do not need Poseidon B-Cable to connect sensor over TP cable to RJ45. TP cable with RJ45 connector can be connected directly to terminal board. Use "LAST" configuration if you connect only one sensor(connection detail). In case you connect sensors to S-Hub unit, use "MIDDLE" (connection detail) configuration for every sensor except the last one.:
- RJ45 connector wiring to 4 pinsTerminal: GND (-) = RJ45: 7 (brown/white)
- Terminal: Vcc (+) = RJ45: 8 (brown)
- Terminal: RS-485 (A) = RJ45: 5 (blue/white) + 6 (green)
- Terminal: RS-485 (B) = RJ45: 4 (blue) + 5 (green/white)
Sensor address setting
Every sensor on RS-485 line must have its unique addressEach sensor on RS-485 line must have its unique address for communication with RS-485 bus. This address is presented via small or capital letter and is configurable several ways. Details are available in manual
Assigning of RS-485 address to Temp-485 Box2 sensor:
- Address configuration via terminal jumper (see picture)
- Setup mode configuration (console setup mode)
- Configuration command over RS-485
Notice: Address of HTemp-485 Box2 is always combination of small and capital letters, therefore "A/a" combination is always put.
Basic parameters
- Range of temperature
-10°C to +70°C
Range of relative humidity
0% to 100%
Resolution format
0.01°C / 0.01%
Temperature PROBE measurement accuracy
+/- 0.75 °C in range -10°C to +70°C
Humidity measurement accuracy
5% from range of 0% to 90% of relative humidity
holds for temperature range 15°C to 30°C
Measuring speed
Respond to query within 50ms at maximum,
temperature measuring 1x within a second
Communication
- Communication parameters
- Auto-Report mode
Temperature value is reported automatically at predefined time, period range is 1 .. 255 [seconds]
- Question-Answer
Temperature is reported at request according to protocol
9600 8N1
Communication line
RS-485 / terminations can be activated by an internal jumper
Maximum number of sensors
max 25 sensors of the HTemp type at one RS-485 line
Status indication
R/G indicator: blinks at every measuring (red - temperature, orange humidity measuring).
Function modes
Auto-Report / Question-Answer
Temperature format
„*A+028.0C
Humidity format
„*a048.19%
Others
- Power supply
+8V to +30V DC, protection against reversing of polarity
Power consumption
Typically 10 mA, max. 50 mA (depending on number of sensors on a line)
RS-485 line termination
Internal resistor 470W,
Conductor connection
Terminal or RJ45
Mechanic shielding, mounting
IP 20, wall mounting - cables brought from below or sideways
Outside dimensions
80 x 64 x 67 mm
Ordering
HTemp-485 Box2 | Indoor temperature and humidity sensor with RJ45 and terminal for RS-485 connection | 600 505 |
Special accessories | Sensor RJ45 MIDDLE cable | About 0.5 meter long cable, connecting 4 pins ( A,B,+,- ) from terminal unit to RJ45 connector. Cable for connection of middle sensors. | 600 233 | Sensor RJ45 LAST cable | About 0.5 meter long cable, connecting 4 pins ( A,B,+,- ) from terminal unit to RJ45 connector. Cable for connection of the last sensor in-line. | 600 234 | Poseidon S-Hub | RS-485 line switch for 8+1 RJ45 connectors and TP cables. S-Hub can be used as a power supply for all connected sensors. | 600 041 |
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