Series secondary alarm display screen

Product Introduction

thisSeries secondary alarm display screenUsing dedicated integrated instrument chips, the measurement input and transmission output adopt digital calibration and self calibration technology, ensuring accurate and stable measurement, eliminating measurement errors caused by temperature drift and time drift. This series of instruments adopts surface mount technology and is designed with multiple protection and isolation measuresEMCElectromagnetic compatibility testing has strong anti-interference ability, high reliability, and high cost-effectiveness.

thisSeries secondary alarm display screenEquipped with programmable functions for multiple types of inputs, one instrument can be paired with different input signals (thermocouples)/thermal resistor/linear voltage/linear current/linear resistor/Frequency, etc,At the same time, the display range and alarm control can be set by the user on site, and can be used in conjunction with various sensors and transmitters to achieve measurement, display, adjustment, alarm control, data acquisition, and recording of physical quantities such as temperature, pressure, liquid level, capacity, and force. Its application range is very wide.

Intelligent digital display instrument with dual row or single row four positionsLEDDisplay measurement values（PV）And the set value（SV）Analog display of measured value percentages using monochrome or two-color light columns, with zero and full correction, cold end compensation, digital filtering, communication interface, etc4Multiple alarm methods, optional1～4Relay alarm output, optional transmission output, or standard communication interface（RS485orRS232C）Output, etc.

Product features

1Specialized integrated instrument chips have more reliable anti-interference and stability.

2Universal signal input, can be matched with commonly used thermal signals through menu settings.

3The display range, transmission output range, alarm value, and alarm mode can be modified online.

4The anti-interference mode combining software and hardware effectively suppresses on-site interference signals.

5Digital calibration technology, without adjustable components such as potentiometers.

6Automatic compensation for thermocouple cold junction temperature and thermal resistance lead resistance.

7It can provide power distribution function for external two - and three wire transmitters.

8Capable of transmitting and outputting with optoelectronic isolation.

9Equipped with light column simulation display function.

10 possessRS232orRS485Communication function, connected to the upper computer, can form a data acquisition system and control system.

11Equipped with six relay alarms (this function instrument needs to be ordered separately).

Technical Specifications

u Display mode: in double row or single row with four positionsLEDDisplay measurement values（PV）And the set value（SV）Simulate and display the percentage of measured values using monochromatic or two-color light columns.

u Display range:-1999～9999.

u Measurement accuracy:±0.2%FS±1Words or0.5%FS±1Words;±0.1%FS±1Character (requires special customization).

u Resolution: Last word.

u Input signal:

u Thermocouple: KTheETheSTheBTheJTheTTheRTheNAutomatic compensation range for cold end temperature0～50℃, compensation accuracy±1℃。

u Thermal resistance:Pt100TheCu100TheCu50TheBA2TheBA1Compensation range for lead resistance ≤15Ω.

u DC voltage:0～20mV、0～75mV、0～200mV、0～5V、1～5V；0～10V(Please specify when ordering, incompatible with other signals).

u Direct current:0～10mA、0～20mA、4～20mA.

u Linear resistance:0～400Ω(Remote transmission pressure gauge).

u frequency Rate:0.1Hz-10KHz(This function needs to be specified separately and is not compatible with other signal inputs).

u Transmission output accuracy: same as measurement accuracy.

u Analog input impedance: current signalRi=100ΩVoltage signalRi=500KΩ.

u Simulated output load capacity:

u Current signal:4～20mAWhen outputtingRo≤750Ω；0～10mAWhen outputtingRo≤1.5KΩ.

u Voltage signal: requires input impedance of external instrumentRi≥250KΩOtherwise, the output accuracy after connecting external instruments cannot be guaranteed.

u Distribution output:DC24±2V 30mA.

u Alarm method:1-4Road alarm control(Lower limitSP4Lower limitSP2, upper limitSP1Upper limitSP3)，LEDinstructions.

u Alarm accuracy:±1Words.

u Protection method: Input circuit disconnection, input signal overload/Under range alarm.

u Communication method:RS232orRS485.

u Communication distance:1km.

u Setting method: Panel touch button numerical setting, set value is saved when power is off.

u Environmental temperature for use:-10～55℃； ambient humidity:10～90%RH.

u compressive strength:input/output/power supply/communication≥1000V.AC 1minute.

u insulation resistance:input/output/power supply/communication≥100MΩ.

u electricity Source: Switching power supply: AC:85～265V, Frequency:50Hz/60Hz；

u Linear power supply: AC:220V±10V, Frequency:50Hz±2Hz；

u DC power supply：24V±2V.

u merit Consumption:<5W.