K-Box: Product Manual
Introduction
The K-Box is Influx’s stackable instrumentation compatible with the Rebel range of data loggers. It can also be integrated with any device configured via DBC files, other logger systems, or output signals CAN to the Rebel Dash display.
The K-Box is an ideal solution for applications that require a large number of thermocouples and analog inputs. The K-Box’s accurate sensor data is transmitted periodically on the CAN bus, enabling multiple devices to be connected. The K-Box CAN bus settings, calibration, and sampling rates are all easily configurable, and these settings are stored within the K-Box even when the device is not powered.
Advantages:
Wide switchable software voltage input ranges ±80V, ±40V, ±20V or ±10V.
Accuracy: - Analog ±0.0015%, Thermocouples ±0.08%.
High input impedance.
They have isolated Differential Inputs to prevent earthing problems.
Key features:
Stackable enclosure.
Simple signal configuration using a DBC file.
Each unit enables up to 8 K-type connections at a 20Hz sampling rate and 8 analog inputs at a 1kHz sampling rate.
Pulse Width Measurement: 3 inputs frequency measurements or pulse measurements.
Regulated +5V and +12V output power supply for external sensors.
Instrumentation data time is synchronised with the recorded vehicle network data.
Analog inputs and thermocouple inputs are galvanically isolated.
Connect and measure data from up to 4 IEPE sensors using the K-IEPE addon.
Measure temperature using RTDs with K-PT100/1000 addon.
Technical Specification:
Technical Data | Description |
---|---|
Power supply | 6V to 36V DC. |
Interfaces | CAN Bus |
PC interfaces | None |
Enclosure | Dimension (L115xH79xW105) / Weight 450g / IP65 / ABS |
Environmental | -40°C to +85°C Humidity max 90% |
Output voltages | 5V and 24V (Max current drawn 80 mA combined) |
Analog Inputs | |
Number of channels | 8 Bipolar differential inputs |
Accuracy | ±0.0015% |
Software switchable range | ±80V, ±40V, ±20V, ±10V |
Resolution (ADC) | 16 Bit |
Max Sampling Rate | 1 KHz (all 8 channels), 2 KHz (4Channels), 10 KHz (2 Channels) |
Input impedance | > 4 M Ohm |
Max input voltage | ±75 Analog Ground, ±34V Analog inputs |
Thermocouple Inputs | |
Number of channels | 8 J/K/T-type inputs |
Accuracy | ±1°C accuracy |
Measurement Range | Measurement: -200 °C to 1250 °C |
Max Sampling Rate | 10 Hz (all 8 channels) |
Maximum input voltage | ±3.3 V |
Digital Input / Output | |
Number of channels | ×4 unipolar single-ended hardware configured as inputs or outputs |
Input switching thresholds | Low < 1.5V |
High > 2.0V (up to 12V) | |
Input leakage current | < 10nA |
Output states | (Optional) Open collector - 510 Ohm |
Output drive capability (OK): Collector-emitter voltage | 45V max |
Collector current (DC) | 10mA max |
Saturation voltage (OK on) | < 0.15V |
Equivalent on-resistance | < 510Ohm |
Leakage current at OK off | < 5uA |
Min-max applied voltage | Digital input -8V to +12V; Digital output 0V to +40V power supply, which limits the current to 10mA |
PWM | 3 digital input frequency measurements up to 100kHz or pulse measurements. (min 100 Nano sec) (between pulses 10 microseconds) |
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