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Related Manuals for CTI GG-NH3
Summary of Contents for CTI GG-NH3
- Page 1 GG-NH3 AMMONIA GAS SENSOR Installation and Operation Manual...
- Page 2 GG-NH3 Warning Use this product only in the manner described in this manual. If the equipment is used in a manner not specified by Calibration Technologies, the protection provided by the equipment may be impaired. This equipment should be installed by qualified personnel.
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Page 3: Table Of Contents
GG-NH3 Table of Contents General Description . . . . . . . . . . . . . . . . . . . . . 4 Installation . -
Page 4: General Description
GG-NH3 General Description Installation Locating the sensor The GG-NH3 sensor is a +24 VDC, three-wire, 4/20 mA sensor for ammonia which utilizes proven electro- One of the most important considerations when chemcial sensor technology for fast and accurate leak installing the GG-NH3 sensor is that it must be easily detection. -
Page 5: Installation Guidelines
GG-NH3 Installation Guidelines: • Remove and discard protective cell label. • Always mount sensor vertically. 6.5" • Locate sensor to be easily accessible for calibration 2.0" and maintenance. • Mount sensor close to potential leak source. • Mount sensor in "breathing zone" (4'-5' above floor) for optimum personnel protection. -
Page 6: Wiring
GG-NH3 Wiring Electrical wiring must comply with all applicable codes. Electrical Power: 24 VDC regulated, 350 mA. Output: Linear 4/20 mA output. Monitoring equipment may have a maximum input impedance of 700 ohms. Cable Recommendation: 20/3 shielded cable (General Cable C2525A or equivalent). Length of cable to sensor should be no greater than 1,500 feet. -
Page 7: Operation
Calibration • Once the output signal has peaked (or 2 minutes maximum) adjust the Span pot until the correct The GG-NH3 sensor comes factory calibrated and output is achieved (see Figure 2). With full-scale should require only minimal adjustment after span gas, the calculated span value is 200 mV. - Page 8 GG-NH3 Fault (red) LED: • Blinks once per second if SafeCell test fails. • On steady if supply voltage is less than 10VDC or SafeCell test fails for six hours. Status (amber) LED: • Blinks once per second if RFI is detected.
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Page 9: Maintenance
Maintenance Sensor Life: The electrochemical cells are extremely reliable, but several things can cause depletion of the The GG-NH3 sensor is designed for long life and chemistry within the cell including: minimal maintenance. For proper operation, it is • A period of time essential that the test and calibration schedule be •... -
Page 10: Specifications
GG-NH3 Specifications Power (green) LED: Blinks once per second for 60 seconds during power-up. If supply voltage is too Input Power: +24 VDC, 350 mA low (<10 VDC) or improperly grounded, green LED Detection Principle: Electrochemical will blink once per second continuously. Stays steady Detection Method: Diffusion on to indicate power. -
Page 11: Warranty
No goods shall be returned to CTI until receipt by the buyer of shipping instructions from CTI; and c) the right of CTI to require that the buyer provide proof of purchase such as the original invoice, bill of sale or packing slip to establish that the product is within the warranty period. - Page 12 GG-NH3-DOC1-3 20190605 ctiengineering.com | 866-394-5861...
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