Description

QEED Universal Temperature Converter

QA-TEMP Universal Temperature Converter

The QEED QA-TEMP is an advanced universal temperature converter for RTD, thermocouple, potentiometer and resistance measurement. It provides 4-way galvanic isolation, programmable analogue retransmission output, relay alarm output, RS485 Modbus RTU communication and USB datalogging.

The module is suitable for industrial temperature monitoring, process signal conversion, machine panels, BMS, EMS, SCADA, PLC, data logger and IoT applications where temperature or resistance signals must be isolated, converted, logged and transmitted digitally.

Inputs RTD, TC, potentiometer and resistance

Outputs 0 20mA, 0 10V, relay and RS485

Isolation 4-way galvanic isolation

Datalogging USB pen drive logging with RTC

Overview

QA-TEMP converts temperature, potentiometer or resistance input signals into standard industrial output formats. It can provide a programmable analogue output, alarm relay output and RS485 Modbus RTU data from one compact DIN rail module.

The built-in USB datalogging function allows site teams to record measurement data locally using a USB pen drive. Stored data can be downloaded in Excel-importable format for commissioning, troubleshooting, trending and reporting.

Positioning: Universal temperature and resistance converter with analogue retransmission, alarm relay, RS485 Modbus and USB datalogging.

Key Features

Universal Input

Supports RTD, thermocouple, potentiometer and resistance measurement from one module.

Programmable Output

Provides programmable current or voltage analogue output for retransmission to PLC, BMS or EMS.

Relay Alarm Output

5A SPDT relay contact can be configured for alarm or threshold output through software.

RS485 Modbus RTU

Communicates as a Modbus RTU slave through terminals or optional base module connection.

USB Datalogging

Logs data using USB On-The-Go and a pen drive, with integrated real-time clock.

DIN Rail Mounting

Compact 17.5mm module for control panels, BMS panels and industrial enclosures.

Supported Inputs

Input Type	Supported Signals	Notes
RTD	Pt100, Pt500, Pt1000, Ni100	2, 3 or 4 wire measurement with automatic cable interruption detection
Thermocouple	Types J, K, R, S, T, B, E, N	Automatic cable interruption detection
Potentiometer	1000Ω to 10kΩ	Suitable for position or resistance-based sensing applications
Resistance	400Ω or 4000Ω range	2, 3 or 4 wire resistance measurement

Output Functions

Output	Specification	Typical Use
Current Output	0 20mA programmable, maximum load resistance 600Ω	Retransmission to PLC, controller, BMS, EMS or recorder
Voltage Output	0 10V programmable, minimum load resistance 2kΩ	Retransmission to analogue input systems
Contact Alarm	5A / 230Vac SPDT relay, fully programmable by FACILE QA-TEMP	Alarm, threshold output or control interlock
RS485 Modbus	RS485 Modbus RTU slave on terminals or optional base adapter	SCADA, PLC, EMS, BMS, IoT gateway and IoTWatt 4.0 integration

4-Way Isolation

QA-TEMP provides 4-way galvanic isolation between the input, analogue / digital output, RS485 / USB communication and power supply. This is useful in industrial environments where signal noise, ground loops and different reference potentials can affect measurement quality.

Isolation paths: Input, analogue and digital output, RS485 / USB communication and power supply are galvanically isolated at 1.5kV.

Datalogging Function

The QA-TEMP can log data through the USB On-The-Go port using a USB pen drive. The integrated RTC real-time clock allows timestamped records, and stored data can be downloaded in Excel-importable format.

USB pen drive data logging
Integrated RTC real-time clock
Excel-importable stored data files
Useful for site commissioning and troubleshooting
Suitable for temporary temperature trending and performance checks

Technical Specifications

Parameter	Specification
Power Supply	10 to 40Vdc or 20 to 28Vac, 50/60Hz
Input	RTD, thermocouple, potentiometer or resistance input
Retransmission Output	Isolated analogue output, programmable voltage or impressed current; active or passive output supply
Sensor Power Supply	13Vdc, 30mA max
Absorption	Maximum 2VA
Protection Index	IP20
Accuracy	0.1% F.S.
Resolution	16-bit
Rejection	50 60Hz
Thermal Stability at 25°C	<100ppm / °C
Working Temperature	-15°C to +65°C
Storage Temperature	-40°C to +85°C
Isolation	Input, analogue / digital output, RS485 / USB and power supply isolated at 1.5kV
Humidity	10% to 90%, non-condensing
Altitude	Up to 2000m a.s.l.
Mounting	DIN rail mounting with removable terminals; optional base connection for RS485 bus and supply
Connections	Removable 5.08mm terminals
CE Standards	EN61000-6-4:2006 + A1:2011; EN61000-6-2:2005; EN61010-1:2010
Dimensions	17.5 x 100 x 112mm, terminals excluded
Datalogger	Non-volatile memory, USB On-The-Go logging with pen drive, Excel-importable file output, integrated RTC
Configuration	FACILE QA-TEMP software via USB or RS485; DIP switch for Modbus address and baud rate

Correction note: The old page referenced FACILE QA-VI in some datalogger/configuration rows. This updated page uses FACILE QA-TEMP because the product is QA-TEMP.

Typical Applications

Temperature Monitoring

Convert RTD or thermocouple signals for industrial temperature monitoring and control.

PLC / SCADA Integration

Send temperature values through analogue output, relay alarm or RS485 Modbus RTU.

BMS and EMS Panels

Use in building and energy management panels for temperature and process signal monitoring.

Machine and Process Systems

Convert sensor signals in machine tools, process skids and control panels.

Temporary Logging

Use USB datalogging for commissioning, troubleshooting and temperature trend studies.

IoTWatt 4.0

Can be integrated via RS485 Modbus or compatible input modules into IoTWatt 4.0 systems.

Configuration

QA-TEMP can be configured using the free FACILE QA-TEMP software through USB or RS485. The software allows configuration of input type, conversion range, span, zero, analogue output, relay alarm, logging and Modbus communication settings.

Select RTD, thermocouple, potentiometer or resistance input
Configure analogue output type and scaling
Set span and zero
Set relay alarm threshold and alarm behaviour
Configure Modbus address and baud rate
Configure USB datalogging interval and data storage
Use DIP switches for basic Modbus address and baud rate settings

Commissioning note: Confirm sensor type, wiring method, input range, output scaling and Modbus parameters before connecting the converter to a live monitoring or control system.

System Integration

QA-TEMP is suitable for temperature and resistance signal integration into PLC, SCADA, BMS, EMS, data logger, Modbus gateway and IoTWatt 4.0. Its combination of analogue output, relay alarm, RS485 Modbus and USB datalogging makes it useful for both permanent installations and temporary troubleshooting.

Use analogue output for direct PLC or controller input
Use relay output for alarm or threshold indication
Use RS485 Modbus RTU for digital monitoring
Use USB datalogging for site temperature trend capture
Use optional base connection for cleaner multi-module panel wiring

QA-TEMP Supply and Integration

Saturn Pyro supports QEED QA-TEMP universal temperature converters for RTD, thermocouple, potentiometer, resistance measurement, signal isolation, analogue retransmission, relay alarm, RS485 Modbus integration, USB datalogging, PLC, SCADA, BMS, EMS and IoTWatt 4.0 projects in Malaysia.

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