Intelligent Light Column Digital Display Alarm Device

Intelligent Light Column Digital Display Alarm Device

1、 Performance Usage

The intelligent digital (light column) display alarm uses a monochrome or dual color light column to simulate the percentage of measured values. It also has zero and full correction, cold end compensation, digital filtering, communication interface, and four alarm modes. It can be equipped with 1-4 relay alarm outputs, as well as transmission outputs or standard communication interfaces (RS485 or RS232C) outputs. This product can be matched with standard linear analog signals (standard analog signals output by frequency converters), and the display range, alarm control, etc. can be set by the user on site to achieve measurement, display, adjustment, alarm control, data acquisition, and recording of physical quantities such as frequency, speed, line speed, and pulling speed. Its application range is very wide. Has the advantages of good linearity and high input impedance; Using a precision voltage reference source, with a small temperature coefficient and stable operation.

2、 Technical parameters

Input signal:

Thermocouples: K, E, S, B, J, T, R, N; The automatic compensation range for cold end temperature is 0-50 ℃, with a compensation accuracy of ± 1 ℃.

Thermal resistance: Pt100, Cu100, Cu50, BA2, BA1; The compensation range for lead resistance is ≤ 15 Ω.

DC voltage: 0-20mV, 0-75mV, 0-20mV, 0-5V, 1-5V; 0-10V (to be specified when ordering, incompatible with other signals).

DC current: 0-10mA, 0-20mA, 4-20mA.

Linear resistance: 0-400 Ω (remote pressure gauge).

Display range: -1999~9999, -1999.9-999.9, -19.99~99.99, -1.999~9.999

Transmission output accuracy: same as measurement accuracy.

Analog input impedance: current signal Ri=100 Ω; voltage signal Ri=500K Ω.

Simulated output load capacity:

Current signal: Ro ≤ 750 Ω for 4-20mA output; Ro ≤ 1.5K Ω for 0-10mA output.

Voltage signal: The input impedance Ri of the external instrument is required to be ≥ 250K Ω, otherwise the output accuracy after connecting the external instrument cannot be guaranteed.

Distribution output: DC24 ± 2V 30mA.

Alarm mode: 1-4 alarm control channels (lower limit SP4, lower limit SP2, upper limit SP1, upper limit SP3), LED indication.

Alarm accuracy: ± 1 word.

Protection method: Input circuit disconnection, input signal over/under range alarm.

Communication method: RS232 or RS485.

Communication distance: 1km.

Setting method: Panel touch button numerical setting, set value power off * save.

Operating environment temperature: -10~55 ℃; Environmental humidity: 10-90% RH.

Voltage resistance: Input/output/power/communication ≥ 1000V.AC for 1 minute.

Insulation impedance: Input/output/power/communication ≥ 100M Ω.

Power supply: Switching power supply: AC: 85-265V, frequency: 50Hz/60Hz;

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

DC power supply: 24V ± 2V.

Dimensions: 48H × 96W 96W × 48W 72W × 72W 96W × 96W 160H × 80W 80H × 160W 48W × 48W