Strain gauge transmitter 6841

strain gauge transmitter
strain gauge transmitter
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Description

6841 Programmable transmitter for strain gauge sensors • Strain gauge sensors with 4- or 6-wire connection • Excitation voltage 10 V to sensors, max 150 mA • Red LED display on the front panel • Settings via front panel keys • Output 0/4..20 mA, 0..10 V • Serial communication RS-485 • 2 alarm relays • Taring via front panel keys or external switch • Measuring accuracy < 0,05 % • Power supply 12..32 VDC or 85..240 VAC • Linearisation 6 points The versatile transmitter 6841 is designed for strain gauge sensors. Strain gauge sensors can be connected with 4 or 6 wires. The 6-wire connection is recommended for applications requiring very high accuracy. The transmitter provides 10 V excitation voltage for the sensors, max. four 350 ohm sensors. The transmitter 6841 includes output 0/4-20 mA/ 0-10 V, 2 alarms or serial output RS-485 as standard. Display scaling and taring is easy via front panel keys. Scaling can be carried out in two different ways, either by applying the mV/V values of the bridge or using the teaching function. The teaching is done by first loading the sensors with the min. weight and then with the max. weight, after which the transmitter will automatically calculate the scaling. Additional teaching points can be utilized to improve linearity. In applications where the sensor loading is not in balance a separate serial connection unit of the sensors, 20 SA-4, can be used to prevent the nonlinearity caused by the imbalance. There are two power supply alternatives: one for line voltage 85..240 VAC and the other for 12..32 VDC or 24 VAC, both galvanically isolated from input and outputs.

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6841
6841
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