Display-type multi-functional signal isolation transmitter (one-to-one/one-to-two/one-to-three)

This display-type multi-functional signal isolation transmitter supports various types of inputs and outputs, features high precision, high-speed sampling, and RS-485 communication capabilities, and is suitable for industrial processes that require signal conversion, isolation, display, and communication integration.

Product Introduction

This series of transmitters features a three-color LCD display screen, providing intuitive visualization of input and output values. It integrates an 18-bit A/D input and a 15-bit D/A output, with a fast sampling rate of approximately 200 milliseconds. Inputs support various formats including thermocouples, RTDs, mA, and voltage (V/mV). Outputs are configurable as 4-20 mA, 0-20 mA, 0-10 V, 0-5 V, 1-5 V, and 2-10 V, and RS-485/Modbus RTU communication is optional. The product features a password lockout function, sensor disconnection detection, and a fully isolated design (power supply, input, and output are all isolated) to ensure process safety and signal stability.

Dimensions: 22.5 × 96 × 83 (W*H*D) (mm)
Installation method: Rail fixing

Product Features

High-quality three-color LCD display screen.
18-bit A/D high-precision input.
15-bit linear D/A analog output.
Supports 1-to-1, 1-to-2, and 1-to-3 analog output.
200 msec fast sampling speed.
Supports DI digital input.
Input, output, and power supply isolation design.
Two-way setting menu.
Displays the input value and the output percentage.
Sensor disconnection detection function.
The combination lock is set for protection.
It has a simulated output testing function.
It is compatible with multiple signal inputs, including Thermocouple, RTD, mA, and Voltage.

Selected model/specification: OWX-A-Code 1-Code 2-Code 3-Code 4-Code 5

Code 1	Working Power Supply
F	AC 90-250V
D	DC 11-40V

Code 2	Analog Output 1
A	Isolation 4-20 mA/0-20 mA
V	Isolation 0-10V/0-5V/1-5V/2-10V
N	None

Code 3	Analog Output 2
A	Isolation 4-20 mA/0-20 mA
V	Isolation 0-10V/0-5V/1-5V/2-10V
N	None

Code 4	Analog Output 3
A	Isolation 4-20 mA/0-20 mA
V	Isolation 0-10V/0-5V/1-5V/2-10V
D	DC 20V
N	None

Code 5	Optional
1	DI Function
2	RS485 Modbus RTU
N	None

Specifications

Power Supply and Basic Specifications

Operating power supply: AC 90–250V 47–63 Hz、DC 11–40V
Power consumption: 8 VA (4W maximum)
Sampling rate: 5 times/second
A/D resolution: 18 bits
Display: Tri-color LCD (dual-zone display)
Display text height: Top 8 mm white, bottom 6.5 mm green

Product Features

Signal Input Specifications

Supports multiple Thermocouple, RTD, mA, and Voltage formats:

Type	Measurement Range	Accuracy	Input Impedance
K	-200~1370°C	±2°C	2.2MΩ
T	-250~400°C	±2°C	2.2MΩ
E	-100~900°C	±2°C	2.2MΩ
B	0~1800°C	±2°C	2.2MΩ
R	0~1767.8°C	±2°C	2.2MΩ
S	0~1767.8°C	±2°C	2.2MΩ
N	-250~1300°C	±2°C	2.2MΩ
L	-200~900°C	±2°C	2.2MΩ
PT100 DIN	-200~600°C	±0.4°C	70.5Ω
PT100 JIS	-210~700°C	±0.4°C	650KΩ
mV	-8~70 mV	±0.05%	2.2MΩ
mA	-3~27 mA	±0.05%	1.3KΩ
V	-1.3~11.5 V	±0.05%	2.2MΩ

Sensor Disconnection Detection

TC/RTD/mV: Displays OPEN when open circuit
4–20 mA: less than 1 mA
1–5 V: below 0.25 V
Response time: Approximately 4 seconds for TC/RTD/mV; approximately 0.1 seconds for 1–5V/4–20mA.

Analog Output

Current output: 4–20 mA, 0–20 mA
Voltage output: 0–5V, 1–5V, 0–10V, 2–10V
Output resolution: 15 bits
When stability reaches 99.9%, set the time to 0.1 seconds.
Load capacity: Maximum current 500Ω, minimum voltage 10KΩ
Isolation withstand voltage: 1000 VAC

Communication Function

Interface: RS-485 Modbus RTU
Speed: 2.8Kbps～38.4Kbps
Address: 1～247
Data bits: 7 or 8
Check bits: None, Even, Odd
Stop bits: 1 or 2
Communication memory: 160 bytes

Physical and Environmental Specifications

Shell material: Flame-retardant polycarbonate
Dimensions: 22.5 × 96 × 83 mm
Installation method: Rail fixing
Operating temperature: -10～50°C
Storage temperature: -40～60°C
Humidity: 0–90% RH (non-condensing)
Height restriction: 2000 meters
Insulation resistance: minimum 20 MΩ (500VDC)
Withstand voltage: 2000 VAC for 1 minute
Earthquake resistance: 10 m/s (two hours)
Impact resistance: 20g
Protection rating: Panel IP66, Housing/Terminals IP20
Weight: 160 g
Safety standards: UL61010C-1, CSA C22.2, EN61010C-1

Application Cases

Conversion and isolation of various sensor signals (thermocouples, RTDs, mV/V, mA) in industrial processes.
Data from the manufacturing equipment temperature monitoring and heating/cooling systems is transmitted to the PLC/DCS.
The signal is connected in series with RS-485/Modbus RTU to communicate with the host computer or SCADA monitoring system.
Integrated application of equipment maintenance, quality control and process data recording.