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Temperature/Humidity Transmitter  
THT-500
THT-500 Catalog  
THT-500 Instruction Manual THT-500 Communication Instruction Manual
 

THT-500 Photo
- Temperature and humidity transmitter using dry-bulb, wet-bulb sensors
- Optional serial communication RS-485
- Terminal Arrangement
- Spec
- Dimensions


Temperature and humidity transmitter using dry-bulb, wet-bulb sensors
Temperature output Outputs 0 to 20 mA DC or 4 to 20 mA DC corresponding to the dry bulb
input temperature of 0 to 100 or 0 to 200.
Humidity output Outputs 0 to 20 mA DC or 4 to 20 mA DC corresponding to the relative
humidity 0 to 100 %RH.


Optional serial communication RS-485
Shinko protocol, Modbus ASCII or Modbus RTU is available.
The following operations can be carried out:
   Setting communication parameters.
  Reading of input and output values and action status
 
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Dimensions
THT-500 External dimensions  
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Spec
Spec
Input Wet bulb input RTD, Pt100 3-wire, 0 to 100
(Allowable input lead wire resistance: 10  or less per wire)
Dry bulb input RTD, Pt100 3-wire, 0 to 100
Allowable input lead wire resistance: 10  or less per wire)

RTD, Pt100 3-wire, 0 to 200
(Allowable input lead wire resistance: 10  or less per wire)
[Dry-bulb input temperature: 0 to 100 (standard), Switchable to 0 to 200 using the internal jumper.]
Output Temperature output

Outputs the following corresponding to the dry bulb input temperature of 0 to 100 or 0 to 200.
 0 to 20 mA DC or 4 to 20 mA DC, Load resistance: Max. 550 

Humidity output

Outputs the following corresponding to the relative humidity 0 to 100 %RH using dry bulb input temperature 0 to 100 and wet bulb input temperature 0 to 100.
 0 to 20 mA DC or 4 to 20 mA DC, Load resistance: Max. 550 

Conversion accuracy Temperature output

Within converted temperature1.0

Humidity output Within 3% of full scale
Input sampling period 250 ms
Output resolution 12000
Power supply voltage 100 to 240 V AC 50/60 Hz, or 24 V AC/DC 50/60 Hz
Power consumption Approx. 5 VA
Operating environment Ambient temperature: 0 to 50
Ambient humidity: 35 to 85 %RH (non-condensing)
Case (Material, Color) Material: Flame-resistant resin
Color: Black
Dimensions 75 x 105 x 71 mm (W x H x D)
Mounting method Mounting by the frame using screws inside the control panel (3 mm screw for 4 positions)
Mounting angle: Steel sheet (Nickel plated)
Weight Approx. 200 g
Option [TC] Electrical shock protection terminal cover
Option [C5] Serial communication

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Terminal Arrangement
THT-500 Terminal arrangement

GND Ground terminal
POWER SUPPLY 100 to 240 V AC or 24 V AC/DC
TEMPERATURE OUTPUT 4 to 20 mA DC or 0 to 20 mA DC
HUMIDITY OUTPUT 4 to 20 mA DC or 0 to 20 mA DC
RS-485 Serial communication RS-485 (C5 option)
OUTPUT SELECTION(*) 4 to 20 mA DC or 0 to 20 mA DC
WET BULB INPUT(RTD)  
DRY BULB INPUT(RTD)  
(*):

When terminals 14 and 15 are closed: 0 to 20 mA DC is output for
temperature and humidity outputs.
When terminals 14 and 15 are open: 4 to 20 mA DC is output for
temperature and humidity outputs.

 
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