Keithley
Keithley 3720
Dual 1x30 Multiplexer Card
60 two-wire channels or 30 four-wire channels Number of Channels
Dual 1×30 multiplexer or 30-channel two-pole matrix Switch Configuration
300 V DC or peak AC Maximum Voltage
1 A per channel Maximum Current
Less than 1 Ω initial Contact Resistance
| Attribute | Value |
|---|---|
| Number of Channels | 60 two-wire channels or 30 four-wire channels |
| Switch Configuration | Dual 1×30 multiplexer or 30-channel two-pole matrix |
| Maximum Voltage | 300 V DC or peak AC |
| Maximum Current | 1 A per channel |
| Contact Resistance | Less than 1 Ω initial |
| Insulation Resistance | Greater than 10^9 Ω at 500 V DC |
| Relay Type | Reed relays |
| Compatible Mainframe | Keithley 3706A System Switch and Multimeter |
| Card Slot Compatibility | Single-slot module for 3706A mainframe |
| Relay Life Expectancy | Greater than 10^8 operations |
Keithley 3720 Options:
- 3720 - 3720-MTC-1.5 - 78 Pin D-sub Female to Male Cable, 1.5m (5 ft.)
- 3720 - 3720-MTC-3 - 78 Pin D-sub Female to Male Cable, 3m (10 ft.)
- 3720 - 3720-ST - Screw Terminal Block (required for auto CJC thermocouple measurements)
- 3720 - 3791-CIT - Contact Insertion and Extraction Tool
- 3720 - 3791-KIT78-R - 78 Pin Female D-sub Connector Kit (contains 2 female D-sub connectors and 156 solder-cup contacts)
- 3720 - 7401 - Type K Thermocouple Wire (100 ft.)
- 3720 - 3720-3Y-EW-STD - 1-year factory warranty extended to 3 years from date of shipment
- 3720 - 3720-5Y-EW-STD - 1-year factory warranty extended to 5 years from date of shipment
- 3720 - C/3720-3Y-STD - 3 (Z540-1 compliant) calibrations within 3 years of purchase
| Model | 3720 |
|---|
The Keithley 3720 Multiplexer Card features two independent 1x30 two-pole multiplexer banks, ideal for general-purpose switching such as temperature measurements.
With a 300V, 1A switched or 2A carry signal capacity and onboard relay memory, the 3720 supports flexible four-pole operation and thermocouple readings with CJC via the 3720-ST accessory.
Testwall can supply the used Keithley 3720, fully tested. With expert support and global delivery, Testwall ensures high-performance instrumentation with unmatched reliability and service quality. Please contact us directly if you need calibration or repair of the Keithley 3720.
