Instrumentation for Laboratory and Environment


	Features
	simultaneous measurement of conductivity and temperature autom. temperature compensation auto range function Min./Max. value memory Salinity measurement Multi-function display

	Description
	The model LF 39 is ideal for lab, field and industrial work. The meter features high accuracy, rugged plastic enclosure, microprocessor controlled evaluation and extreme wide measuring range in conjunction with the conductivity cell with graphite electrodes and built-in temperature probe. The LCD displays low battery warning. The LF 39 compensates automatically the conductivity reading for temperature shifts with adjustable linear temperature coefficient or with the non-linear function of natural water acc. to DIN EN 27888. The reference temperature is switchselectable between 20 °C or 25 °C. In addition LF 39 features calculations of the solution resistance, the salinity and the total dissolved solids (TDS). With these functions LF 39 creates an unrivalled versatile range of application.


	Specifications
	Measuring ranges	0 ... 200; 0 ... 2000 µS/cm; 0 ... 20; 0 ... 200 mS/cm manual adjustable or automatically -5 ... 100 °C; 0 ... 2000 mg/l
	Resolution	0.1; 1 µS/cm; 0.01; 0.1 mS/cm; 0.1 °C
	Temperature compensation	automatically / disconnectible linear 0.3 ... 3 %/K or non-linear function
	Display	LCD, 2 x 4 digits; 12.4 / 7 mm
	Power	9 V battery IEC 6 F22 LF 39-N: mains adapter N 10 (230 V AC)
	Interface	LF 39-D: RS-232 with adapter D 10
	Ambient temperature	0 ... 50 °C
	Conductivity cell	Two-electrode cell with built-in temperature probe graphite electrodes; -5 ... 80 °C; cell constant about 1 cm^-1; Ø 12 mm; fixed cable 1.35 m
	Dimensions	meter: 142 x 71 x 26 mm
	Weight	about 255 g
	Delivery volume LF 39/Set	case with meter LF 39 and cell LTC 1/21 50 ml standard solution 0.1 N KCl (12.9 mS/cm at 25 °C)