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Gas Filter Correlation CO Analyzer
The Model 300EM measures carbon monoxide by comparing infrared energy absorbed by a sample to that absorbed by a reference gas according to the Beer-Lambert law. This is accomplished with a Gas Filter wheel which alternately allows a high energy light source to pass through a CO filled chamber and a chamber with no CO present. The light path then travels through the sample cell, which has a folded path of 14 meters.
This technique allows near interferent-free operation.
The M300EM design produces superior zero and span stability and a high
signal-to-noise ratio, allowing excellent sensitivity.
Multi-tasking
software gives real time indication of numerous operating parameters and
provides automatic alarms if diagnostic limits are exceeded.
Built-in data acquisition and internal memory allows logging multiple parameters including average and instantaneous values, calibration data and operating parameters. Stored data
can be retrieved via the RS-232 port, optional Ethernet port, or from the front panel.
The Model 300EM features rugged construction and is designed to perform with a minimum of attention. In the event maintenance is required, modular construction makes service a simple operation.
Features
- Standard two year warranty
- Ranges, 0-5 ppm to 0-5000 ppm, user selectable
- Gas Filter Wheel for CO specific measurement
- GFC wheel guaranteed against leaks for 5 years
- Multi-tasking software allows viewing of test variables during operation
- Continuous self checking with alarms
- Dual bi-directional RS-232 for remote operation
- Digital status outputs indicate instrument operating condition
- Adaptive signal filtering optimizes response time
- Temperature & Pressure compensation
- Internal data logging with 1 min to 365 day multiple averages
- APIcom remote operation software
| Specifications |
| Ranges: |
0-5 ppm to 0-5,000 ppm full scale, user selectable; Dual ranges and auto ranging supported |
| Units: |
Dual ranges and auto ranging supported
ppm, mg/m3 |
| Zero noise: |
< 0.1 ppm |
| Span noise: |
< 0.1 ppm (RMS) |
| Lower Detectable Limit (LDL): |
0.2 ppm |
| Zero drift: |
< 0.5 ppm/24 hours, < 1 ppm/7 days |
| Span drift: |
< 0.5% of reading/24 hours, 1% of reading/7 days |
| Lag time: |
10 seconds |
| Rise and Fall Time: |
< 60 seconds to 95% |
| Linearity: |
1% of full scale |
| Precision: |
1.0% of reading |
| Sample Flow Rate: |
800 cm3/min ±10% |
| Operating Temperature Range: |
5 - 40° C (with EPA equivalency) |
| Dimensions (HxWxD): |
7” (178 mm) x 17” (432 mm) x 23.5” (597 mm) |
| Weight: |
40 lbs (24 kg) |
| Power: |
100V - 120V, 220V - 240V, 50/60 Hz, 250W |
| Analog outputs: |
10V, 5V, 1V, 0.1V, selectable |
| Recorder Offset: |
±10% |
| Serial Outputs: |
Serial Port 1: RS-232 (DB-9M)
Serial Port 2: standard RS-232 or optional RS-485 (DB-9F), Ethernet |
| Status (Digital): |
8 outputs, 6 inputs (opto-isolated), 4 alarm outputs (optional) |
| Current Output: |
Optional 4-20mA isolated outputs, select up to three channels |
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