NV-500-2-2A New Cosmos Vietnam

Multi-point Type Gas Alarm System NV-500

 

New-Cosmos Vietnam Code: NV-500-2-2A
Gas monitoring system, 2 channel consisting of:
1 x wall mount panel NV-500-2
1 x alarm unit
1 x indicator unit
2 x diffusion type gas detector head KD-5B-N
Powered by 100-240V AC without back-up battery
Monitoring gas and range: LPG, 0-100% LEL

Model

NV-500

Gas Detected

LPG or Methane

Detection Principle

Catalytic combustion

Detection Range

0-100%LEL (isobutane)

Detection Points per Unit

2 points

Multi-point type (Max. 12 points) gas alarm system for LPG or Methane.

Features

  • Multi-point type (max. 12 points) gas alarm system for LPG or Methane.
  • 2・4・6・8・10・12 points type are available (2 points per unit).
  • Battery provides backup power in case of a power failure, allowing continuous monitoring over 30 minutes after the failure, then intermittently monitors for 2 days (option).
  • Earthquake-resistant design considering great earthquakes.
  • Battery life can be measured by one-touch operation.
  • Very easy to change the alarm set value.
  • Extremely easy zero adjustment and span adjustment.
  • Wide operating voltage range of 85-264 V.
  • Zero suppression function cancels slight fluctuations of the reading due to environmental change.

Specifications

Model NV-500
Detection Principle Catalytic Combustion
Gas Detected LPG or Methane
Detection Points per Unit Monitors 2 points per unit
Detection Range 0-100%LEL (isobutane)
Concentration Indicator
Alarm Set Value Indication
Backlight
Peak Hold Function (on alarm)		 LCD bar-graph meter (53 dotsx2 lines)
Direct reading scale
Yes
Holds a peak value on alarm, which is canceled by the Reset
Alarm Set Value(default value)
/Change of the Set Value		 24%LEL
Alarm Accuracy ±25% of Alarm Set Value (under identical conditions)
Response Time 30s or less at 160% concentration of an Alarm Set Value

 

(excluding sampling delay for extractive type)
Alarm
Indication		 Individual Alarm Lamp
Latching		 On alarm: Flashes red, lights up after the Buzzer Stop
Complete lock (Turn off by the Reset after the level declined)
Alarm Sound Standard Operation On alarm: Intermittent buzzer, stops after the Buzzer Stop
Voice Alarm On alarm: Intermittent buzzer
Eternal
Alarm Output		 Individual Alarm Contact Dry NO contact (Contact capacity: 2A@100 VAC)
Individual Voltage Output 0-6-12 VDC (20mA or less)
Collective Alarm Contact Dry NO-C-NC contact (Contact capacity: 2A@100 VAC)
Centralized Monitor Panel Output 0-6-12 VDC (20mA or less)
External Buzzer Contact Dry NO contact (Contact capacity: 2A@100 VAC)
External Buzzer Voltage Output Intermittent voltage signal (12 VDC, 10mA or less)
Alarm Delay Selectable by a DIP switch (10s constant)
Main Power Source 85 to 264 VAC
Power
Consumption		 When using KD-14 Diffusion type (15+3.5n)VA
When using PD-14 Extractive type (15+7.5n)VA
Backup Power
Source*		 Battery Type Sealed lead acid battery
Overdischarge Prevention Function Yes
Battery Life Check Function Yes
Battery Voltage Indication 2-digit LED
Exterior Color Munsell 2.5PB 7.0/1.0

* Only on models with a built-in backup power supply (option).