Tango TX1-2 Industrial Scientific H2S Single-Gas Detector Monitor- Sell By 12-26
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This is a new Industrial Scientific Tango TX1-2 single-gas portable detector configured with an H2S (hydrogen sulfide) sensor, running firmware version 3.20.06 and manufactured June 12, 2026 with a sell-by date of December 12, 2026. The included factory Final Inspection and Test Report documents a 25 PPM H2S span gas calibration (cylinder EB0130107, expiring March 16, 2029) and alarm setpoints of 10 PPM low, 20 PPM high, 15 PPM STEL and 10 PPM TWA, with the left and right sensors showing 162% and 160% span reserve. The rear label lists intrinsic-safety approvals for Class I Div 1 Groups A, B, C, D, Class II Groups E, F, G, T4, Class I Zone 0 AEx ia IIC T4 and Ex ia IIC T4 Ga (UL and CSA) from -40°C to 50°C when used with one Tadiran TL-5955 battery cell, and the unit has an orange rubber boot, metal belt clip and visual alarm LEDs. It ships in the original Industrial Scientific Tango box with the calibration cup and tubing, and is made in the USA.
Product Specifications
| Brand | Industrial Scientific |
| Model | Tango TX1 |
| Manufacturer Part Number | TX1-2 |
| Gas Detected | Hydrogen Sulfide (H2S) |
| Number of Gases | 1 (single-gas) |
| Firmware Version | 3.20.06 |
| Low Alarm Setpoint | 10 ppm |
| High Alarm Setpoint | 20 ppm |
| STEL Alarm Setpoint | 15 ppm |
| TWA Alarm Setpoint | 10 ppm |
| Default Span Gas | 25 ppm H2S |
| Hazardous Location Rating | Cl I Div 1 Gr A-D; Cl II Gr E-G; Ex ia IIC T4 Ga |
| Temperature Rating (Ta) | -40 to 50 °C |
| Battery Cell | Tadiran TL-5955 lithium |
| Certifications | UL, CSA |
| Manufacture Date | June 12, 2026 |
| Sell-By Date | December 12, 2026 |
| Housing Color | Orange |
| Country of Origin | USA |
| Included Accessories | Calibration cup, tubing, test report, belt clip |