3540

3500 Series/Low Thermal EMF Reed Relays L OW THERMAL EMF REED RELAYS E MF The 3500 Series is ideally suited to the needs of Instrumentation, Data Acquisition and Process Control. The specification tables allow you to select the appropriate relay for your particular application. Recommended for use in high accuracy DVM’s, Multiplexers and Digital or Analog Multipoint Recorders. If your requirements differ from the selection options, please consult Coto’s Factory to discuss a custom reed relay. Refer to page 41 for Thermal EMF test methods. 3500 SERIES FEATURES u u u u u u u u Low Thermal EMF: < 10 µV through < 0.5 µV with 50 nV stability. Patented Low Thermal Design. Patent #4,084,142. Low power coils to ensure low thermal EMF. High Insulation Resistance - 1012 Ω Control/Signal isolation of 1500 VDC High reliability, hermetically sealed contacts. Form A, Dry or Hg Wet contacts. High Dielectric Strength. Epoxy coated steel shell provides magnetic shielding. (For Model #’s 3501 & 3540) (For Model #’s 3502, 3520, 3541) Bottom View 2 Dimensions in Inches (Millimeters) COTO TECHNOLOGY RHOPOINT COMPONENTS LTD, Email: components@rhopoint.co.uk Website: www.rhopoint.co.uk 3500 Series/Low Thermal EMF Reed Relays Model Number Parameters THERMAL EMF ….OPTIONS 3501 2 Test Conditions Units 1 Form A 3502 2 2 Form A 3520 2,3 2 Form A 3540 2 1 Form A High Voltage 3541 2 2 Form A High Voltage Measured after 5 minutes at nominal coil voltage Refer to Reed Relay Technical Section for Details µV Individual