Modbus & Serial Output RTD Temperature Transmitter

Exceptional linearity & accuracy at high update rates. DIN Rail mounted, digitally programmable.
Navigation:  Home > Transmitter-modbus
Modbus Transmitters for RTD Temperature
Key Features
  • Factory calibrated for 100Ω platinum, 10Ω copper & 120Ω nickel RTDs
  • 2, 3 or 4-wire RTD connection with lead resistance compensation
  • RS232 or RS485 serial communications, half or full duplex, isolated
  • Modbus RTU, Modbus ASCII or Laurel ASCII protocol
  • Output update rate to 60/sec
  • User selectable spans from entire RTD range down to 15.0°
  • Detachable screw-clamp connectors
  • Isolated analog output, 4-20 mA or 0-10V, 16-bit resolution
  • Dual solid state relays for alarm or control, isolated
Laureate Modbus & Serial Output RTD Temperature Transmitter

RTD
Metal
Alpha R at
0°C
R at top
of range
Excitation
Current
Range Conformity Error
Platinum 0.003850
(DIN)
100Ω 390.48Ω
at 850°C
196 µA -200°C to +850°C
-328°F to +1562°F
±0.03°C
±0.05°F
Platinum 0.003902
(ANSI)
100Ω 394.36Ω
at 850°C
196 µA -200°C to +850°C
-328°F to +1168°F
±0.04°C
±0.07°F
Nickel 0.00672 120Ω 380.31Ω
at 850°C
196 µA -80°C to +260°C
-112°F to +500°F
±0.05°C
±0.09°F
Copper 0.00427 9.035Ω 19.116Ω
at 850°C
5.0 mA -97°C to +260°C
-143°F to +500°F
±0.05°C
±0.09°F

 

RTD Input
Calibration, Pt 100 DIN
Calibration, Pt 100 ANSI
Configuration
Excitation current
Overall accuracy
Span tempco
Zero tempco
Sensor lead resistance
   tempco per conductor
Over-voltage protection
Open sensor indication
IEC 751 (IPTS-68)
NIST Monograph 126
2, 3 or 4-wire connection
0.2 mA
±0.01 of full scale ±2 counts
±0.003% of reading/°C
±0.03 deg/deg
2-wire, 10 mdeg/Ω/deg up to 10Ω
3 & 4-wire, 10 mdeg/Ω/deg up to 100Ω
125 Vac
0 mA or > 20 mA output, selectable
Serial Data Output (standard)
Signal Types
Data Rates
Output Isolation
Serial Protocols
Modbus Modes
Modbus Compliance
Digital Addressing
RS232 or RS485 (half or full duplex)
300, 600, 1200, 2400, 4800, 9600, 19200 baud
250V rms working, 2.3 kV rms per 1 min test
Modbus RTU, Modbus ASCII, Laurel ASCII
RTU or ASCII
Modbus over Serial Line Specification V1.0 (2002)
247 Modbus addresses.
Up to 32 devices on an RS485 line w/o a repeater.
Analog Output (standard)
Output Levels
Compliance, 4-20 mA
Compliance, 0-10V
Output Resolution
Output Accuracy
Output Isolation
4-20 mA, 0-20 mA, 0-10 Vdc (jumper selectable)
10V ( 0-500Ω load )
2 mA ( 5 kΩ load or higher)
16 bits (65,536 steps)
0.02% of output span plus conversion accuracy
250V rms working, 2.3 kV rms per 1 minute test
Dual Relay Output (standard)
Relay Type
Load Rating
Two solid state relays, SPST, normally open, Form A
130 mA at 140 Vac or 180 Vdc
Power Input
Standard Power
Low Power Option
Power Frequency
Power Isolation
Power Consumption
85-264 Vac or 90-300 Vdc (DC operation not UL approved)
10-48 Vdc or 12-32 Vac
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test
2W typical
Mechanical
Dimensions
Mounting
Electrical Connections
129 x 104 x 22.5 mm case
35 mm rail per DIN EN 50022
Plug-in screw-clamp connectors
Environmental
Operating Temperature
Storage Temperature
Relative Humidity
Cooling Required
0°C to 55°C
-40°C to 85°C
95% at 40°C, non-condensing
Mount transmitters with ventilation holes at top and bottom.
Leave 6 mm (1/4") between transmitters, or force air with a fan.

Pinout
Laureate Modbus & Serial Output RTD Temperature Transmitter
pin out for 4-20 transmitter for AC RMS Voltage
feedback