Product Overview
The JS8746 Harsh Environment Temperature Sensor is engineered for critical temperature monitoring in demanding conditions, particularly within the HVAC control systems of container ships. Designed to ensure a temperature-controlled environment for the transportation of goods by land, sea, and air, this sensor addresses the challenges of extreme weather, corrosive marine elements, and degrading agents like ozone and UV. Its robust construction and advanced materials provide superior resistance to water ingress and environmental degradation, meeting statutory requirements for temperature measurement and performance expectations in the marine shipping market. The sensor's reliability is validated by exceeding 14 days of Highly Accelerated Corrosion Test (HACT), a standard where each test day equates to one year of marine exposure.
Product Attributes
- Brand: Amphenol Advanced Sensors
- Housing Material: Stainless steel hard shell (Class corrosion resistance A2 or better according to ISO3506)
- Cable Material: Double-insulated, multicore copper conductors and tin-coated conductors
- Crimp Caps Material: Tin-coated brass with integral strain relief
- Environmental Protection: IP68
- Resistance to: Salt solutions, Ozone, UV, and a variety of marine environment cleaning detergents
- Inert to: Trace levels of airborne R134a refrigerant
Technical Specifications
| Specification | Value |
|---|---|
| HACT Exposure | +14 days |
| Temperature Tolerance Rating | 0.2C and 0.15C |
| Operating Temperature Range | -40C to 120C |
| Conductor Cross-sectional Area | 0.25 mm (23 AWG) min, configured as 19mm x 0.14mm |
| Resistance at 25C (Nominal) | 10,000 |
| B25/85 (Nominal) | 3977K |
| Withstand Voltage | 2.5kV rms for minimum of 1 minute (50 Hz, sinusoidal wave-form, between housing and conductors; failure if current exceeds 1mA) |
| Time Constant | 20 seconds or less to register 63% of a known temperature transient |
Model Specifications
| Part Number | L / mm | K / mm | Tolerance 0-70C / C |
|---|---|---|---|
| JS8746A-0.20 | 1000 | 50 | 0.20 |
| JS8746B-0.20 | 2000 | 50 | 0.20 |
| JS8746C-0.20 | 3000 | 50 | 0.20 |
| JS8746A-0.15 | 1000 | 50 | 0.15 |
| JS8746B-0.15 | 2000 | 50 | 0.15 |
| JS8746C-0.15 | 3000 | 50 | 0.15 |
Thermal Equilibrium Resistance Versus Temperature Properties (0.2C Tolerance between 0C and 70C)
| Temp C | R nom / | R min / | R max / | R Tol - % | R Tol + % | Temp Tol + C | Temp Tol - C |
|---|---|---|---|---|---|---|---|
| -40 | 333560 | 328250 | 338930 | -1.59 | 1.61 | 0.24 | -0.24 |
| -35 | 241070 | 237420 | 244750 | -1.51 | 1.53 | 0.24 | -0.24 |
| -30 | 176080 | 173550 | 178630 | -1.44 | 1.45 | 0.23 | -0.23 |
| -25 | 129930 | 128160 | 131700 | -1.36 | 1.37 | 0.23 | -0.23 |
| -20 | 96807 | 95560 | 98061 | -1.29 | 1.30 | 0.22 | -0.22 |
| -15 | 72809 | 71922 | 73699 | -1.22 | 1.22 | 0.22 | -0.22 |
| -10 | 55253 | 54617 | 55890 | -1.15 | 1.15 | 0.21 | -0.21 |
| -5 | 42292 | 41834 | 42751 | -1.08 | 1.09 | 0.21 | -0.21 |
| 0 | 32639 | 32382 | 32897 | -0.79 | 0.79 | 0.15 | -0.15 |
| 5 | 25391 | 25139 | 25642 | -0.99 | 0.99 | 0.20 | -0.20 |
| 10 | 19902 | 19711 | 20093 | -0.96 | 0.96 | 0.20 | -0.20 |
| 15 | 15713 | 15567 | 15860 | -0.93 | 0.93 | 0.20 | -0.20 |
| 20 | 12493 | 12380 | 12606 | -0.90 | 0.90 | 0.20 | -0.20 |
| 25 | 10000 | 9912.2 | 10088 | -0.88 | 0.88 | 0.20 | -0.20 |
| 30 | 8055.9 | 7987.3 | 8124.6 | -0.85 | 0.85 | 0.20 | -0.20 |
| 35 | 6530.0 | 6475.9 | 6584.1 | -0.83 | 0.83 | 0.20 | -0.20 |
| 40 | 5324.6 | 5281.8 | 5367.5 | -0.80 | 0.80 | 0.20 | -0.20 |
| 45 | 4366.5 | 4332.4 | 4400.7 | -0.78 | 0.78 | 0.20 | -0.20 |
| 50 | 3600.5 | 3573.1 | 3627.9 | -0.76 | 0.76 | 0.20 | -0.20 |
| 55 | 2984.6 | 2962.5 | 3006.7 | -0.74 | 0.74 | 0.20 | -0.20 |
| 60 | 2486.6 | 2468.7 | 2504.5 | -0.72 | 0.72 | 0.20 | -0.20 |
| 65 | 2081.8 | 2067.2 | 2096.4 | -0.70 | 0.70 | 0.20 | -0.20 |
| 70 | 1751.1 | 1739.1 | 1763.0 | -0.68 | 0.68 | 0.20 | -0.20 |
| 75 | 1479.6 | 1468.8 | 1490.3 | -0.72 | 0.73 | 0.22 | -0.22 |
| 80 | 1255.6 | 1246.0 | 1265.2 | -0.77 | 0.77 | 0.24 | -0.24 |
| 85 | 1070.0 | 1061.4 | 1078.6 | -0.81 | 0.81 | 0.25 | -0.26 |
| 90 | 915.55 | 907.82 | 923.29 | -0.84 | 0.85 | 0.27 | -0.27 |
| 95 | 786.43 | 779.50 | 793.39 | -0.88 | 0.88 | 0.29 | -0.29 |
| 100 | 678.07 | 671.84 | 684.32 | -0.92 | 0.92 | 0.31 | -0.31 |
| 105 | 586.75 | 581.16 | 592.38 | -0.95 | 0.96 | 0.33 | -0.34 |
| 110 | 509.52 | 504.48 | 514.58 | -0.99 | 0.99 | 0.35 | -0.36 |
| 115 | 443.94 | 439.40 | 448.51 | -1.02 | 1.03 | 0.38 | -0.38 |
| 120 | 388.06 | 383.97 | 392.19 | -1.06 | 1.06 | 0.40 | -0.40 |
| 125 | 340.29 | 336.59 | 344.02 | -1.09 | 1.10 | 0.42 | -0.42 |
2504101957_Amphenol-JS8746B-0-20_C17214774.pdf
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