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NDTV-2 Drum Water Level TV Monitoring System

1. Overview

NDTV-2 drum water level television monitoring system can monitor all kinds of boiler water level direct-reading, the images will be directly fed into the central control room, providing a reliable data for boiler operators to accurate operation. The system can also monitor the boiler furnace externally, and reflect the true position of drum water level.

 

2. Main technical parameters

2.1 Camera

item

parameter

power supply

220V  50Hz

video input

1.0V[p-p]PAL composite 75Ω/BNC connectors

horizontal resolution forceline)

≥400 (horizontal center)

Signal Noise RatiodB)

50

minimal illumination1x)

0.9( F0.75 )

 

2.2 Monitor

item

parameter

video input

1.0V[p-p]PAL composite 75Ω

horizontal resolution forceline)

≥400 (horizontal center)

CRT(diagonal line) (inch)

14 or 21

 

2.3 Lens

item

parameter

focal length(millimeter)

6.1~72

relative aperture

1.2-C

image sizeinch)

1/3

horizontal viewing angle

4.0~43.7

 

2.4 Use of environmental conditions

1Ambient temperature: -25 ~+70

2Relative humidity: < 90%

Description: When the temperature is higher than 35 , availability of compressed air (pressure ≥ 4Kpa, flow ≥10 m3 / h) on the camera system for cooling.