TH0240 Standard Resistance Multiplexer
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.
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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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