Table of Contents
Advertisement
Quick Links
Advertisement
Table of Contents
Subscribe to Our Youtube Channel
Summary of Contents for Hydro Instruments GA-170
- Page 1 GA-170 Gas Detector Operation and Maintenance Manual The information contained in this manual was current at the time of printing. The most current versions of all Hydro Instruments manuals can be found on our website: www.hydroinstruments.com GA-170 Rev. 7/6/12...
-
Page 2: Table Of Contents
7. Sensor and Calibration Kit ..............10 8. Ordering Information ................10 9. GA-170 Circuit Board ................13 10. GA-170 Wiring Connections ..............14 11. Connection of External Alarm Light and Horn ........15 12. GA-170 4-20mA output wiring diagram ..........16 13. Sensor Monitor Communication ............17... -
Page 3: Installation And Operation
A. Start Up and Installation 1. The GA-170 can be ordered for use with single phase A/C power of either 120 or 240 VAC at 50 to 60 Hz. When connecting A/C power to the instrument, it is imperative that the A/C source be well grounded. -
Page 4: Alarms And Output Signals
7. Calibration: The Model GA-170 Gas Detectors are factory calibrated and do not require any calibration at startup. With the use of the calibration cap, the span calibration can be carried out if required. Be sure to retain the sensor calibration cap for such calibrations. - Page 5 Falling: If the Danger (Low Level Alarm) is set to a higher value than the Alarm (High Level Alarm), then the GA-170 will automatically configure the channel as a Falling Alarm (i.e., if the sensor reading is lower than the Danger or Alarm settings, then the GA-170 will activate alarm conditions).
-
Page 6: Operation Screens
8 data bits, 1 start bit, 1 stop bit, no parity C. Operation Screens This section explains the features of the standard operating screens of the GA-170. NOTE: Navigate between the display screens below using the keys. See Figure 4. -
Page 7: Battery Backup
Status messages 1. Normal: Indicates that the sensor reading is above 2 mA and below the alarm set point. 2. Danger: Indicates that the sensor reading exceeds the low alarm setting, but is lower than the high alarm setting. (Meaning that if the low alarm setting is at 1.0 PPM and the high alarm setting is at 2.0 PPM, then the status will be “Danger”... -
Page 8: Configuration Of Parameters
II. CONFIGURATION OF PARAMETERS Configuration of Sensor Parameters & Calibration of Sensors Each GA-170 Gas Detector will be set up from the factory as per the ordering instructions. However, settings and sensors can be changed using the following procedure. A. Entering Setup: All parameters are set in the password protected setup section. -
Page 9: Setup Mode Screens
FIGURE 5 GA-170 Setup Mode Screens Display: Battery: Setup Channels Ch1 Ch2 Ch3 Ch4 Sensor 1 setup screens Ch1Gas Type: Ch1 Decimal Posn: XXX.X Ch1 Full Scale: 10.0 Ch1 Zero Calibration: Ch1 Span Calibration: Ch1 Low Set: Ch1 High Set:... -
Page 10: Calibration Cap
5 & 30 seconds. An alarm condition must be continuously present for the duration of a full delay time before the GA-170 will change to the ALARM state. NOTE: Increasing the delay time may help to avoid false alarms caused by transient effects. -
Page 11: Troubleshooting
III. TROUBLEShOOTING A. Installation Check – Review each of the following points first. 1. Sensor Installation: Check the following points regarding the sensor installation. a. Sensor enclosure bolts must be securely fastened to protect against corrosion of the transmitter board etc. b. -
Page 12: Explanation Of Suggested Responses
C. Explanation of Responses 1. Zero Calibration: If the display is not reading 0.0 PPM in air, then adjust the zero calibration. Refer to Section II.B.4 and Figure 5. 2. Calibration Cap: The calibration cap is installed for protection of the sensor during shipping and storage, but must be removed upon installation. -
Page 13: Ga-170 Circuit Board
HORN– BAT+ Voltage BAT– Selector Fuse N NO1 CO1 NC1 NO2 CO2 NC2 NO3 CO3 NC3 NO4 CO4 NC4 NO5 CO5 NC5 NO6 CO6 NC6 Date: October 2005 GAS DETECTOR (GA-170) Scale: Not to scale CIRCUIT BOARD Dwg. No.: GA170CB... -
Page 14: Ga-170 Wiring Connections
FIGURE 10... -
Page 15: Connection Of External Alarm Light And Horn
• Single compact unit for wall mounting • Rotating strobe light with red housing • Audible horn • Weather resistant Available in GA-AL-110 (110V AC) and GA-AL-220 (220V AC). Optional accessory for use with the Hydro Instruments Series GA-170 and GA-171 gas leak detection equipment. GA-170... -
Page 16: Ga-170 4-20Ma Output Wiring Diagram
FIGURE 12 GA-170 Gas Alarm 4-20 mA Output: 1. Remove the red sensor wire from the 24V circuit board terminal. 2. Splice the red sensor wire to the black wire in the signal cable. 3. Connect the red wire in the signal cable to the same 24V circuit board terminal that was being used. -
Page 17: Sensor Monitor Communication
FIGURE 13...
Need help?
Do you have a question about the GA-170 and is the answer not in the manual?
Questions and answers