Two wire Signal Transmitter.

DAT4535

Two wire Signal Transmitter
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Two wire Signal Transmitter.
• Universal Input Isolated Transmitter
• Input Thermocouple, RTD, Voltage, mA, Potentiometer, mV, Resistance
• DIP Switch Configurable
• PC Programmable
• DIN Rail Mounted
• 7 to 32 Vdc
General Description

The DAT4535 is a loop-powered, two-wire universal signal transmitter designed for high-accuracy signal conversion and galvanic isolation. It supports a wide variety of input signals including thermocouples, RTDs, current (mA), voltage (V and mV), resistance, and potentiometers. The output is a standard 4-20mA analog signal suitable for direct connection to PLCs, DCS systems, and panel meters.

The DAT4535 is both PC programmable and DIP switch configurable. Users can select the sensor type, set zero and span values, and define the output range using accessible DIP switches on the side panel—making field adjustments fast and intuitive. Additional features include support for internal or external cold junction compensation for thermocouples and wire resistance compensation for RTDs.

Key Features

  • Universal Input: Accepts thermocouples, RTDs (2/3/4 wire), mA, V, mV, resistance, and potentiometers.
  • Loop Powered: Operates on 7 to 32 VDC loop power, making it ideal for remote or space-constrained installations.
  • High Accuracy: ±0.05% full scale for mV, V, and mA inputs; ±0.1% for thermocouples, RTDs, and potentiometers.
  • 4-20mA Output: Industry-standard two-wire analog output signal for wide compatibility.
  • DIP Switch Accessible: DIP switches are externally accessible through a side panel for on-site configuration.
  • Cold Junction Compensation: Supports both internal and external CJC for thermocouples.
  • RTD Wire Compensation: Ensures precision measurement in 2-, 3-, or 4-wire RTD setups.
  • Galvanic Isolation: Provides complete isolation between input and output for noise immunity and safety.

The DAT4535 is ideal for compact and reliable signal conditioning in process control, SCADA systems, remote I/O, and temperature monitoring. Its low power requirement and universal compatibility make it a go-to choice for both OEM and retrofit applications.

INPUT OUTPUT POWER SUPPLY
Thermocouples, RTD, Voltage. Current 4-20mA. Power Supply Voltage 7-32Vdc
Potentiometer, Resistance. Reverse polarity protection 60Vdc
CURRENT CONSUMPTION CONFIGURATION ISOLATION
Between 60 and 115 mA PC Programmable Between Input/Comms/Power Supply 1500Vac.
DIP Switch
EMC HOUSING TEMPERATURE
For Industrial environments Material self-extinguishing Operating Temperature -40°F +185°F -40°C +85°C
Immunity EN 61000-6-2 Dimensions W x H x T 4 2/5 x 3 1/2" x 1/2" Storage Temperature -40°F +185°F-40°C +85°C
Emission EN 6100-6-4 112 x 90x x 12.5 mm Humidity (non condensing) 0-90%
Weight 7 oz 200 g
DAT4535 Datasheet
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Applications
Drawings
Signal Isolators

Specifications
Input: K Type Thermocouple, J Type Thermocouple, R Type Thermocouple, S Type Thermocouple, T Type Thermocouple, mA, Potentiometer, Resistance, mV, See Data sheet for range.
Output: 4-20mA 2 Wire..
Power Supply: 7 to 30 Vdc. Reverse polarity protection 60 Vdc.
Current Consumption: Current output 3.5 mA max.
Temperature rating: Operative -4°F +158°F -20°C +70°C
  Temperature Storage Temperature -40°F +185°F -40°C +85°C.
Humidity: (non condensing) 0-90%.
Housing: Material self-extinguishing.
Dimensions: 3 1/2" x 4 1/2 " x 1/2", 90 x 112x x 12.5 mm.
Weight: 3 oz 90 g.
EMC. For industrial environments.
  Immunity: EN 61000-6-2.
  Emission: EN 61000-6-4.
Configuration: PC Configurable and DIP Switch Configurable
Drawings

DAT4535 Analog Inputs

mV Input Connections

Input. Positive Negative
mV L I
mV Input for Two wire Signal Transmitter DAT4535

Thermocouple Input

Input. Positive Negative
J Type Thermocouple L I
K Type Thermocouple L I
S Type Thermocouple L I
R Type Thermocouple L I
B Type Thermocouple L I
E Type Thermocouple L I
T Type Thermocouple L I
N Type Thermocouple L I

The thermocouple input is isolated from the Power Supply/Output.
Thermocouple Input Input for Two wire Signal Transmitter

RTD and Resistance Input

Input. Positive Negative Common Common
2 Wire Resistor G I
2 Wire RTD G I
3 Wire Resistor H I G
3 Wire RTD H I G
4 Wire Resistor H L G I
4 Wire RTD H L G I

The RTD and resistance input is Isolated from the Power Supply/output.
RTD and Resistance Input for Two wire Signal Transmitter DAT4535

Potentiometer Input

Input. Positive Negative Wiper
Potentiometer G I H

The Potentiometer input is Isolated from the Power Supply and the 2 Analog outputs.
Potentiometer Input for Two wire Signal Transmitter DAT4535

Voltage Input

Input. Positive Negative
Voltage E I

The Voltage input is Isolated from the Power Supply/output.
Voltage Input for Two wire Signal Transmitter DAT4535

Current Input

Passive 4-20mA Input. Positive Negative
Terminal F I

The Current input is Isolated from the Power Supply/output.
mA Input for Two wire Signal Transmitter DAT4535

Power Supply and mA Output

Passive 4-20mA Input. Positive Negative
Terminal F I

The Current input is Isolated from the Power Supply/output.
Power Supply and mA Output DAT4535
Applications

DAT4535 Custom made products.

What is a DAT 4535 110414?
The DAT4535 110414 has an input impedance of 10 MOhm on the mV range and the analog output has a 15 second filter.
What is a DAT 4535 240914?
The DAT4535 240914 has an input for a J type thermocouple which can accept a sensor with an output impedance of 40 KOhm with a range of 0 to 120°C.

DAT4535 - Frequently Asked Questions

What is the DAT4535 used for?
The DAT4535 is a loop-powered, isolated signal transmitter that converts analog signals from thermocouples, RTDs, mA, V, mV, resistance, or potentiometers into a standard 4-20mA output.
What is the power supply range for the DAT4535?
The DAT4535 operates on loop power from 7 to 32 VDC, making it suitable for remote and space-constrained applications.
How do I configure the DAT4535?
The DAT4535 can be configured using either PC software or DIP switches. The DIP switches, accessible through a side panel window, allow selection of sensor type, range, zero, and output span.
What types of input signals are supported?
The DAT4535 supports thermocouples, RTDs (2-, 3-, or 4-wire), current (0-20 mA, 4-20 mA), voltage (0-10V, ±10V, mV), resistance, and potentiometers.
What output signal does the DAT4535 provide?
The output is a linear 4-20mA signal that is galvanically isolated from the input.
What is the measurement accuracy?
The DAT4535 offers ±0.05% accuracy for mA, voltage, and mV inputs, and ±0.1% for thermocouple, RTD, and potentiometer inputs.
Does the DAT4535 support cold junction compensation?
Yes, the DAT4535 supports both internal and external cold junction compensation for thermocouple measurements.
What’s the difference between the DAT4535 and DAT4235?
The DAT4535 is a loop-powered, two-wire transmitter with a 4-20mA output, while the DAT4235 is a separately powered, three-wire device that can output either voltage or current and offers more flexibility for output configuration.
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