Det-Tronics NTMOS IP66/IP67 H2S Gas Detector - Manual (Page 13)

2.1 95-8670 11
SPECIFICATIONS
CURRENT OUTPUT—
4-20 mA.
MEASUREMENT RANGE—
0 to 100 ppm.
INPUT VOLTAGE—
18 to 30 Vdc, 24 Vdc nominal.
INPUT POWER—
2.5 watts maximum.
TEMPERATURE RANGE—
Operating: –40°F to +149°F (–40°C to +65°C)
Storage: –40°F to +149°F (–40°C to +65°C).
HUMIDITY RANGE—
5 to 95% RH.
RESPONSE TIME—
T20 ≤ 5.4 seconds with full scale gas applied
T50 ≤ 10.8 seconds with full scale gas applied
T90 ≤ 33 seconds with full scale gas applied.
ENVIRONMENTAL LOCATION—
Exposing the detector to certain materials or environments
can adversely effect its performance. These materials
and environments include: Silicones, Halides (Fluoride,
Chlorine, Bromine and Iodine based compounds), Heavy
metals, and Acidic environments.
INGRESS PROTECTION—
See appendices for details.
CROSS SENSITIVITY—
500 ppm CO ≤ or = 10 ppm H
2
S
50 ppm H
2
≤ or = 5 ppm H
2
S
5 ppm NO
2
≤ or = 1 ppm H
2
S
100 ppm Methanol ≤ or = 50 ppm H
2
S
Cross sensitivity to Aromatic Volatile Organic Compounds
(e.g. Xylene, Toluene, and Benzene).
BAROMETRIC PRESSURE—
Negligible effect.
WARM-UP TIME—
Up to 30 minutes.
CALIBRATION—
Single point, 50% span with Humidification tube kit, or
ampoule calibration required.
CALIBRATION CYCLE—
• 30 days after initial calibration
• Every 90 days thereafter, or as required by the
application and environment.
DIMENSIONS—
See Figure 10 for NTMOS Detector
See Figure 11 for the NTMOS Detector with Calibration
Gas Mixer attached.
ENCLOSURE MATERIAL—
316 Stainless Steel.
THREAD SIZE—
3/4 inch NPT or M25.
WARRANTY—
24 months from date of manufacture per Terms and
Conditions.
SHIPPING WEIGHT—
1.7 pounds (0.77 kilogram).
CERTIFICATION—
For complete approval details, refer to the appropriate
Appendix:
Appendix A - FM
Appendix B - CSA
Appendix C - ATEX/CE
Appendix D - Additional Approvals
NOTE
The NTMOS Gas Detector is designed and
approved as a ‘stand alone’ toxic gas detector.
FM
APPROVED
®