NG # 02653-HW-KELLER-029
The Keller K-114B (Product No. 309010.0076) is a specialized USB-to-RS485 interface converter manufactured by KELLER Pressure. It is designed to connect KELLER digital pressure transmitters and digital pressure gauges to a PC for configuration, data logging, and signal analysis using software like READ30, PROG30, or ControlCenterSeries30.
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Get A QuoteThe Keller K-114B is a specialized USB-to-RS485 interface converter manufactured by Keller Pressure. It is designed to link digitally enabled Keller pressure transmitters, data loggers, and digital pressure gauges to a PC via a standard USB port.
The "B" variant features an integrated cable terminating in a 5-pin Binder female connector (Series 680), making it directly compatible with Keller instruments equipped with Binder plugs (e.g., Series 30X/40X, LEO3, EV-120).
| Parameter | Specification |
| Model / Part Number | K-114B / 309010.0076 |
| PC Interface | USB 2.0 (Mini USB-B socket) |
| Instrument Interface | RS485 (Half-Duplex), 5-pin Binder Series 680 female plug |
| Baud Rate (Standard) | Up to 250 kbps (slew-rate limited for high EMC performance) |
| Baud Rate (High-Speed) | Up to 3 Mbps |
| Max Bus Capacity | Up to 128 bus devices (1/4 unit load) |
| Sensor Power (Internal) | 12 VDC / max. 40 mA (boosted from USB power) |
| External Power Input | $12\text{--}20\text{ VDC}$ / $<150\text{ mA}$ (optional auxiliary supply) |
| Analog Voltage Measurement ($U_{IN}$) | Range: $0\text{--}12\text{ VDC}$ | Accuracy: $$\pm 0.3\$ FS | Resolution: $ $<0.016\text{ $ |
| Current Draw Measurement ($I_{OUT}$) | Range: $0\text{--}40\text{ mA}$ | Accuracy: $$\pm 0.3\$ FS | Resolution: $ $<0.05\text{ m$ |
| RS485 Bus Features | Switchable $120\ \Omega$ termination resistor, $2 \times 560\ \Omega$ bias resistors, Echo mode |
| Protection Class | IP40 |
| Operating Temperature | $-10^\circ\text{C}$ to $+50^\circ\text{C}$ |
| Total Cable Length | Approx. $1.75\text{ m}$ ($5.7\text{ ft}$) |
| Dimensions & Weight | $56 \times 31 \times 24\text{ mm}$, approx. $90\text{ g}$ |
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