1. Summary
TH0240 is a precise resistance channel-switch device, integrates ultra sensitive, high efficiency, polarized sealed relay, which can eliminate the self-heating effect in the relay. TH0240 improves the efficiency by eliminating the need to continually change leads when measuring groups of resistors.
2. Features
• 10 four terminal channels.
• Sealed Relays with 3 A carrying capacity.
• Copper tellurium terminal.
• Insulation resistance> 1012 Ω.
• The LED indicator on front panel is convenient for observing the selected channel.
• Front Panel or RS232 interface.
3. Application
☆ Establish automatic resistance measurement system |
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• Multiple (up to 10) standard resistors. • The channel of reference standard resistance can be automatically switched according to the value of measured resistance. |
4. Specifications
Wiring | Four terminal |
Terminal type | Tellurium copper |
Input channel | 10 channels (rear panel) |
Output channel | Single channel (rear panel) |
Thermal EMF’s | < 50 nV |
Error contribution | < 20 nV |
Max carrying/switching current | 3 A @ 30 V（DC） |
Contact resistance | < 0.05 Ω |
Communication interface | RS232 |
5. General Specifications
Power supply | AC ( 220±22 )V,( 50±2 ) Hz |
Warm up time | ≥ 30 min |
Temperature performance | Operating temperature: (23±5) °C ~ 45°C； Storage temperature: 0°C ~ 40°C |
Humidity performance | Operating humidity: ( 20% ~ 85% ) R·H, No condensation; Storage humidity: < 95% R·H, No condensation; |
Communication interface | RS232 |
Weight | About 6.5 kg |
Dimensions | 380 mm(W)X 260 mm(D)X 200 mm(H) |
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