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Summary of Contents for GASDNA DA-50
- Page 1 June 12, 2012 SMART Gas Detector /Transmitter(4~20mA) with built-in LCD DA-50 C-910C, Bupyeong Woolim Lion’s Valley, #425, Cheongcheon-Dong, Bupyeong-Gu, Incheon, Korea TEL: +82-32-623-7507 FAX: +82-32-623-7510 E-mail: sales@gasdna.com | Web: www.gasdna.com Page 1 out of 14...
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Page 2: Table Of Contents
June 12, 2012 Contents ▣ Introduction ------------------------------------------------------------------------- 3 ▣ Features ----------------------------------------------------------------------------- 3 ▣ Specification ------------------------------------------------------------------------ 4 ▣ Operation keys --------------------------------------------------------------------- 5 ▣ Sensor calibration -------------------------------------------------------------- 6 ~ 7 ▣ Sensor replacement ------------------------------------------------------------- 7 ▣ Wiring -------------------------------------------------------------------------------- 8 ▣ Dimension -------------------------------------------------------------------------- 8 ▣... -
Page 3: Introduction
June 12, 2012 [Introduction] DA-50 detects various combustible & toxic gases leaked from industrial areas for gas producers, gas users, gas reservoirs, gas by-producers, and so on, in order to prevent any accidents in advance. DA-50 converts digital signal into the 4-20 standard current signal for output signal which can be ㎃... -
Page 4: Specification
DC 20 ~ 30V Output power 4 ~ 20mA / full scale – maximum 2.5km long signal transmission RS-485 – maximum 1.2km long signal transmission Communication with GasDNA’s own protocol Operating temperature and ~ 50 , 5~95% RH (non-condensing) ℃... -
Page 5: Operation Keys
June 12, 2012 [Operation Keys] Keys Description Release the alarm relay. - When AL1 or AL2 relay operates, you can release it (In manual mode) (ex) If you set manual mode in AL-RESET menu, RESET (1) When the measured value is lower than AL1 value, AL1 relay off. (2) When the measured value is higher than AL1 value, AL1 relay on. -
Page 6: Sensor Calibration
Gas sensor’s property is subject to change while it is being used. This is common to all sensors. You have to calibrate the sensor periodically to keep the optimum condition of sensor. DA-50 has automatic calibration function by micro processor. 1. Zero calibration Please follow below process to zero-calibrate sensor output. -
Page 7: Sensor Replacement
▲ Caution: For calibration after sensor replacement, please wait 10 minutes from power on. [Sensor Replacement] DA-50 has sensor cap & sensor filter in order to protect sensor. This sensor cap composes of two modules for easy disassembly. Please follow below steps for sensor replacement. -
Page 8: Wiring
June 12, 2012 [Wiring] Detector Indicator [Dimension] Page 8 out of 14... -
Page 9: Installation
3) Please avoid electronic noise area which has high frequency or high voltage such as motor, pump, or high voltage power cable. 4) Please secure enough space for convenient maintenance. As DA-50 needs periodical maintenance and calibration, you have to avoid inconvenient place for these jobs. Otherwise, we recommend suction type detector. -
Page 10: Programming
June 12, 2012 [Programming] N H 3 0 P P M < 1 > M O D E E N T & S A V E < 2 > H I - S C A L E H I - S C A L E D O W N 3 ~ 9 9 9 9 1 0 0... - Page 11 June 12, 2012 E N T & S A V E < 8 > I N I T T I M E I N I T T I M E D O W N 0 ~ 9 9 R E S E T M O D E E N T &...
- Page 12 June 12, 2012 E N T < 1 3 > C A L [ S P A N ] M O D E R E S E T < 1 3 - 1 > S P A N A D J S P A N A D J D O W N 3 ~ 9 9 9 P P M...
- Page 13 June 12, 2012 20mA analogue output displays 100 . <3> ALARM-1 - Alarm-1 relay output (You can choose low or high by AL-TYPE setting) <4> ALARM-2 - Alarm-2 relay output (You can choose low or high by AL-TYPE setting) <5> AL-TYPE(ALARM-TYPE) - Four kinds alarm choices: H&HH, H&L, L&H, L&LL - Alarm relay: ALARM-1 and ALARM-2 ex) If you choose H&L,...
- Page 14 June 12, 2012 <12> ZERO CALIBRATION In CAL [ZERO], when you touch ENT key, LCD shows “ZERO GAS <0.0 PPM>” with random value. Then, please infuse clean air or 100% nitrogen gas into sensor cap. Then, after the LCD value get stable, please touch ENT key. Then, LCD shows “ [OK]”. However, if the calibration is not successful, LCD shows “[FAIL]”...
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