Specifications

Thermocouples and Thermopiles
134 customer.honeywell.com 70-6910
Q390 Thermocouple
Thermocouples generate a thermoelectric current that senses a
pilot flame on gas-fired heating systems. The pilot flame heats the
tip of the thermocouple, producing a temperature differential
between it and the base. This temperature difference generates a
small amount of DC power, measured in millivolts.
• Push-in clip, split nut, and adapter assembly for easy pilot burner
installation.
• Spade or quick-connect terminals available for millivolt gas control
connections.
• Male nut connector for Pilotstat® safety control power units.
• Available in a variety of lead lengths.
Open Circuit Output: 26 mV to 32 mV
Voltage: 30 mV
Temperature Ratings Cold Junction: 780 F (416 C)
Temperature Ratings Hot Junction: 1400 F (760 C)
Thermocouple and Thermopile Accessories
Product Number
Lead Length
Connection Type Resistance Includes(inch) (mm)
* Q390A1046 24 in. 610 mm 11/32 32 Male Connector Nut 0.02 ohms Adapter and Push In Clip
* Q390A1053 30 in. 762 mm 11/32 32 Male Connector Nut 0.02 ohms Adapter and Push In Clip
* Q390A1061 36 in. 914 mm 11/32 32 Male Connector Nut 0.02 ohms Adapter and Push In Clip
* Q390A1095 18 in. 457 mm 11/32 32 Male Connector Nut 0.02 ohms Adapter and Push In Clip
* Q390A1103 48 in. 1219 mm 11/32 32 Male Connector Nut 0.03 ohms Adapter and Push In Clip
* TRADELINE models • SUPER TRADELINE models
Product Number Description
393948 PG9 Adapter Assembly
394530 Thermocouple Tester Assembly