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Cropico CM5-N Datasheet

Cropico CM5-N Datasheet
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CM5-N 5 DECADE CAPACITANCE COMPENSATION BOX TO COMPLIMENT THE RM6-N Capacitance Decades Dimensions 330mm x 240mm x 200mm (W H D) approx Mass 6.5kg Resistors Metal film 0.6 ohm at 70 °C Temperature coefficient ±100 p.p.m. / °C Switches Contact material silver plated brass. Contact resistance = 10 milli ohm with positive click mechanism. Insulation Resistance = 50,000 Mega ohm Resistance Temperature Co-efficient: ±3ppm / +20°C to +85°C ±5ppm max over –55°C to + 125°C 0.1, 0.01, & 0.001 dials 10ppm/°C Full Load Stability: ±35ppm/10,000 hours ±50ppm/26,000 hours No Load Stability: ±25ppm/10,000 hours ±35ppm/26,000 hours Over full temperature range; -50°C to +125°C Power Rating: 0.33 watt (+85°C) 0.25 watt (+110°C) Maximum Continuous Working Voltage: Up to 250 V dc Noise: Essentially non-measurable <1.5 mV/°C Thermal E.M.F.: <0.4mV/°C typical Encapsulation: Moulded epoxy Windings: Exclusive 'air cushioned' technique provides virtually stressless elements for improved performance. Non inductively wound. Direction of winding reversed at half turns point A five decade capacitance box to compliment the RM6-N range of resistance decades. Styled in the same ergonomic desk case, the CM5-N is a useful addition to any laboratory, as well as for industrial and educational use. The required capacitance is set by means of rotary switches with skirted knobs and stators giving a clear indication of the dial setting. The capacitors are a combination of polycarbonate and polystyrene, generously rated minimum 160 Vdc with a good dissipation factor and high insulation. A useful feature of this unit is the residual capacitance being compensated for on the 10 x 100pF and 10 x 1nF dials so that the actual value of the dial setting appears at the terminals. Decades Accuracy 10 x 100pF 10 x 1nF 10 x 10nF 10 x 100nF 10 x 1mF ± 5% ± 5% ± 5% ± 5% ± 5% CM5-N SPECIFICATIONS key feature CM5-N 5 decades n Range 100 pF to 11.111 uF n Accuracy 5% n Residual capacitance 30 pF at zero setting n Residual capacitance compensation n Bracken Hill, South West Industrial Estate, Peterlee, County Durham, SR8 2SW United Kingdom Tel: +44 (0) 191 586 3511 Fax: +44 (0) 191 586 0227 Email: sales@cropico.com Web: www.cropico.com

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