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Summary of Contents for CTI SD1-NH3
- Page 1 SD1-NH3 SAMPLE-DRAW AMMONIA SENSOR FOR INDOOR POULTRY AND LIVESTOCK MONITORING Installation and Operation Manual...
- Page 2 SD1-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
Installation ........4 Locating the SD1-NH3 ......4 Installation guidelines . -
Page 4: General Description
For optimum ammonia monitoring of litter, mount the bottom of the sensor The SD1-NH3 has a 10-minute sampling rate, and the sample-draw cycle is enclosure approximately two to three feet from the floor. Keep in mind,... -
Page 5: Fresh Air Port Installation
SD1-NH3 Installing the Fresh Air Port If the SD1-NH3 is mounted as recommended on an outside wall, attach the fresh air port, tubing and hardware as follows: (see Figure 1) Drill 1/2" hole through the exterior wall above and to the left of the sensor. -
Page 6: Wiring
SD1-NH3 Wiring Electrical wiring must comply with all applicable codes. Electrical Power: 24 VDC regulated, 1A. Output: Linear 4/20 mA output. Monitoring equipment may have a maximum input impedance of 700 ohms. Cable Recommendation: 18/3 shielded, stranded cable (General Cable C2535A or equivalent). -
Page 7: Operation
Span pot on the top sensor board until the correct output is achieved (see Figure 3). With full-scale span gas, the calculated span value is 200 mV. Once the unit is powered up, the SD1-NH3 starts the 10-minute sampling ((span gas / sensor range * 16 + 4) (mA output)) rate, and the sample-draw cycle is as follows: 2-minute sample time from the room being monitored. - Page 8 SD1-NH3 Figure 3 Top sensor board: Fault (red) LED: • On steady if supply voltage is less than 10VDC. Status (amber) LED: • Blinks once per second if RFI is detected. Gas sensing element Power (green) LED: • On steady to Indicate Power.
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Page 9: Maintenance
When the cell becomes depleted, the unit will give no indication of failure The SD1-NH3 sensor is designed for long life and minimal maintenance. other than the sensor will not respond. For this reason, it is essential that The sensor should be calibrated with certified calibration gas once every the sensor be calibrated on a regular basis. -
Page 10: Specifications
SD1-NH3 Specifications Input Power: +24 VDC, 1A Detection Principle: Electrochemical Detection Method: Sample-draw Gases: Ammonia (NH3) Ranges: 0/100 (standard) Output Signal: Linear 4/20 mA (max input impedance: 700 Ohms) Response Time: T50 = less than 30 seconds T90 = less than 60 seconds... -
Page 11: Warranty
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 SD1-NH3-DOC1-0 20180403 ctiengineering.com | 866-394-5861...
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