1Intelligent temperature and humidity inspection instrumentOverview

The intelligent inspection instrument adopts advanced microcomputer technology and chips, with reliable performance and strong anti-interference ability. It can be used in conjunction with various temperature and humidity sensors and transmitters to perform cyclic detection, alarm control, transmission output, data acquisition and communication of multiple temperature and humidity process parameters. Using a single-chip microcomputer as the host reduces peripheral components and improves reliability. Integrate multiple input models and output methods into one machine. Adopting WATCHDOG circuit, software trap and redundancy, power down protection, digital filtering and other technologies, emphasizing on-site fault tolerance, the whole machine has strong anti-interference ability.

IIIntelligent temperature and humidity inspection instrumentMain technical indicators

Input signal:4-20mATemperature and humidity transmitter

Measurement accuracy: ±0.2％FSThe instrument automatically calibrates the time drift and temperature drift,Throughout the entire temperature range of use0～50℃）Ensure measurement accuracy for an extended period of time.

divide distinguish 力：1/20000、14bitA/Dconverter

Display mode: Double row four digitLEDDigital tube, upper row displays measurement values, lower row displays channel numbers

Sampling period0.5SEquipped with a communication instrument, it collects eight data streams per second.

Alarm output:The instrument can be equipped with up to 12 relay alarm outputs, 220V/3A.

Transmission output: corresponding channel band can be selected 4～20mA、0～10mA、1～5V、0～5V， Isolation output, accuracy: ±0.2％FS

Communication output: isolated communication interfaceRS485/RS232

Baud rate1200~9600bps internal free setting

Working environment: Temperature0～50℃humidity<85％RH

electricity Source: Switching power supply 85～265VACorDC24Vpower consumption4Wbelow

Overall dimensions:160×80×120mm（Plate mounted horizontal） 80×160×120mm(Plate mounted vertical)320×120×270mm(Desktop)

IIIFeatures

Universal input function

Automatic calibration and manual calibration functions

Multiple protection, isolation design, strong anti-interference ability, high reliability

A good software platform with secondary development capabilities to meet special functions

Advanced modular structure, combined with powerful instrument chips, makes it very convenient to combine functions and upgrade systems

Automatic inspection and manual scheduled inspection can be freely switched

4 Model Description

5Operation Manual

（1） Panel Description

1-24: Alarm status indicator light for 1-24 channels

PV measurement value display window

SV Inspection Channel Display Window

（2） Key function

● - Backup key.

En- Parameter setting key,When setting the state, it is used to store the new set value of the parameter and select the next set parameter.

▲- Set value increase key,When setting the stateUsed to increase numerical values. When the output is displayed in the lower row, press this key to increase the output.

▼ - Set value increase key,When setting the stateUsed to reduce numerical values.When the output is displayed in the lower row, press this key to reduce the output amount.

■- Regular inspection/Inspection switch button, when in inspection mode, press this button,Stop at a certain channel for regular inspection,Press ▲ or▼ KeyCan change the regular inspection channel,Press this button again to enter automatic inspection. During regular inspection, the lower row displaysXt/Xr（What is the temperature measurement channel? Note:Xrepresent numbers1~9，tRepresenting temperature,rRepresenting humidity）During inspection, the lower row displays-XX-.