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Supporting Components

Relay Devices



The relay devices enable Thermalyze software to control power to devices when performing Lock-in Thermography tests and  Image Sequence tests.  Relay outputs can also be used to synchronize tests with external test equipment, like functional testers, that are used to exercize more complex devices and circuit boards.


Reed Relay Card, Rack, and Modules

The reed relay device is used to power electronic devices or trigger external test equipment during Lock-in Thermography tests. The maximum on/off frequency at which relays can be cycled is 15Hz. Unlike solid-state relays, reed relays have zero leakage current in the off state which is an advantage when performing Lock-in Thermography tests on devices with low leakage current.

The relay card is inserted into an available PCIe x1 (or larger) slot of the computer. The rack can accommodate eight (8) Form A (SPST) reed relay modules. Maximum current is 0.5 Amp @ 20VDC and 20VAC. For voltages above 20VDC and 20VAC, the maximum current is determined by the following equation: Maximum Current = 10VA / Voltage. The rack 5VDC power supply requires 100-240 VAC, 50/60 Hz.

The rack is housed in a polycarbonate enclosure with clear cover. The enclosure is UL508/NEMA Type 4X with IP-67 TUV rating and UL-94 5VA rating. The enclosure has rubber access holes for the installing the flat ribbon cable and relay terminal leads and is powered by a 5VDC 2A power supply.



Solid-State Relay Device

The solid-state relay device is used to power electronic devices or trigger external test equipment during Lock-in Thermography tests. The maximum on/off frequency at which relays can be cycled is 7.5Hz.

PC communication and relay device power are via USB 2.0. The relay device includes eight (8) solid-state Form A (SPST) relays with 1.2 Amp max @ 60VDC, 30 Vrms switching.



Mechanical Relay Device

The mechanical relay device is used to power devices or trigger external test equipment during Lock-in Thermography and Image Sequence tests. The maximum on/off frequency at which relays can be cycled is approximately 1Hz. Mechanical relays can control more current than either reed or solid-state relays.

PC communication is via USB 2.0 and power is supplied via 12VDC power supply. The device includes eight Form C relays with 6 Amp @ 120VAC or 28VDC resistive. The 12VDC power supply requires 100-240 VAC, 50/60 Hz. Form C relays are single-pole-double-throw (SPDT) with normally-open (NO), normally-closed (NC), and common (C) screw terminals.



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