Specifications

A good but economic solution for telecom site remote monitoring
Site environment & security monitor
DC fan controlling

 

 

 

  

NW31C telecom site remote monitoring system controls the work of DC fans based on indoor and outdoor temperature, indoor humidity.

Control logic is smart, simple and stable, it can help energy saving.

Output a start signal for ventilation system, through relay (free dry contact).

Monitor door/ fire/ flood/ high temp./ battery voltage/ DC fan failure.

Output alarm signal via relay when has fan failure or environmental abnormal.

 
Feature:
1.      DC power supply (DC48V).
2.      parameter is programmable
3.      monitor indoor/outdoor temperature, indoor humidity.
4.      monitor fire/door/flood/high temp./ fan failure
5.      alarm output via relay (dry contact)
6.      control the work of DC ventilation system
7.      real time logging alarm/ environmental condition

Function:
Display	2 groups of LED display temperature, humidity and alarm codes
Temperature detect range	2 channels, detect range: -30°C ~ 70°C
Humidity range	1 channels, detect range: 5% ~ 95%
Control	control the work of DC fan based on indoor and outdoor temperature, indoor humidity, maximum 2 groups
Monitor	high temp. / fire/ door open/ flood/ low voltage/DC fan failure/ temp. sensor failure/ humidity sensor failure/ high humidity
Alarm	6 relays to output alarm signal
logging	real time logging alarm/ environmental condition
Communication	supply monitor software (installed in PC), RS485

 

Technical parameter:
Rating voltage	DC +42V~DC +57V
Work ambient temperature	-25°C~+55°C
Work ambient humidity	5%~95%RH
Temperature detect range	-30°C~+70°C, compensation can be reset via button
Temperature accuracy	±2°C
Temperature resolution	1°C
DC fan on temperature	10°C~50°C, programmable
DC fan off temperature	10°C~30°C, programmable
Sample interval	0~99 min
Maximum recordings	4000 pcs
Communication address	1 ~ 99

 

DC fan control logic:
On	1)indoor temperature > preset of ‘on temperature’ 2)indoor temperature – outdoor temperature > 5°C (programmable)
Off	1)Indoor temperature < preset of ‘off temperature’ 2)indoor temperature ≤ outdoor temperature 3)indoor humidity > preset of ‘high humidity’
When outdoor temperature sensor has fault, controller control the work of DC fan based on indoor temperature. When indoor temperature sensor has fault, controller on the DC fan always work.

 

 

About our company
Hangzhou Xinjian Electronic Co., Ltd. is an ISO9001 certified hi-tech manufacturer, which has been specialized in designing and producing industrial control solution since 1997. All of our products are designed and made for the global market. We’ve offered OEM/ODM service to world-class brands and have been highly recognized not only for the good quality but also excellent after-sales services both in domestic and international market.