KROHNE BM 26 BASIC_ADVANCED Quickstart EN - Manual (Page 27)

TECHNICAL DATA
4
27
BM 26 BASIC/ADVANCED
www.krohne.com 10/2012 - 4000346904 - QS BM 26 Basic-Adv R04 en
4.3 Technical data: optional limit switches
Version Non-NAMUR NAMUR
Measuring system
Measuring principle A bistable reed switch that is magnetically actuated by the float in the
measuring chamber of the bypass level indicator.
Application range Level detection
Design
Description of device Limit switch attached adjacent to the measuring chamber of the
bypass level indicator.
Measuring accuracy
Hysteresis 28 mm / 1.1¨. For more data, refer to the "Optional limit switch"
section.
Operating conditions
Temperature Temperature Temperature Temperature
Operating temperature -40…+120°C / -40…+250°F, if there is insulation around the
measuring chamber, specify the temperature in the order. Do not put
insulation around the switch housing.
Storage -40…+120°C / -40…+250°F
Pressure Pressure Pressure Pressure
Operating pressure Atmospheric pressure
Other conditions Other conditions Other conditions Other conditions
Protection category IP 66
Installation conditions
Notes The switch is not attached to the measuring chamber before delivery
Adjust the switch position for hysteresis and liquid density
Dimensions and weights Refer to "Technical data: Dimensions and weights" in the Handbook
Materials
Switch housing Aluminium with epoxy powder paint
Bracket Stainless steel
Clamp Stainless steel
Electrical connections
Cable entry M16 × 1.5
Control input Control input Control input Control input
Switching capacity 60 VA/W; 1 A; 250 VAC/VDC According to NAMUR 19234
Intrinsically-safe circuit data Refer to supplementary instructions or approval certificates.