BE2100 Noninvasive Biomass Monitor for BE2100 Sensor

Readout and Control for BE2100 Sensor

The BE2100 base unit accommodates one BE2100 noninvasive optical biomass sensor (sold separately). The BE2100 Base Unit supplies power for the sensor and its readings can be viewed on the fluorescent display. The operational parameters for the sensor can be adjusted through the keypad interface.

Software Included

The BE2100 base unit also allows you to communicate digitally with a BE2100 sensor using either an RS232 or USB interface cable, enabling straightforward integration into a fermentor or bioreactor control system or connectivity with a computer. The included software program provides intuitive controls and the ability to track growth in real time. The software can also calibrate the sensor to any desired units (OD, g/L, cells/mL, etc.) as well as track important events (e.g. inoculation, nutrient additions).

Simple Command Set

As an alternative to running the standard computer program, a well-documented serial command set is provided for communicating with the sensor using simple commands. The commands can be called from within any other computer program or control system that has the ability to send and receive serial commands. This makes it easy to integrate the BE system with other instrumentation. A LabView® instrument driver is also available on request.

Analog Output

The analog output at the rear of the BE2100 base unit provides signal current (4-20 mA) proportional to the reading of the sensor. The correspondence between the analog output and the sensor measurement is adjustable (using the “range” setting). The six logarithmically-spaced settings span range values from 0.01 to 1000. The analog output can be easily converted from current (4-20 mA) to voltage (2-10 V) using provided resistors. A second analog output is proportional to the exponential growth rate (in units of 1/hours).

Non-Invasive Biomass Monitoring System

BE2100 Base Unit Features

Base Unit Features

Access to individual sensor and base unit settings through interactive keypad
Password control (optional) of keypad access
Lighted display with variable brightness control
Digital (USB and RS-232) and four analog (4-20 mA or 2-10 V) outputs (biomass and growth rate)

User Interface Software Features

Real-time graphical and numerical display for each sensor
Event marking on graph, both pre-defined and user-defined
Baseline setting and subtraction
User calibration of sensor output to any reference units
Access to all sensor and base unit settings

User Interface Software Requirements

Windows XP/ Vista / 7 Operating System
Available USB or 9-pin RS-232 COM port
Minimum 200 MB free hard disk space
CD reader (required only at time of software installation)

BE2100 Base Unit Specifications

BE2100 Base Unit Electrical Specifications
DC Power In:	9 V, 1000 mA
Certifications:	CE marked Tested for compliance to EMC standards EN55011 and EN61000, and safety standard EN 61010
Sensor Input:	one BE2100 sensors
Sensor Connector:	BE2100 sensor, female (4-wire, threaded)
Analog Output:	4-20 mA (500 Ω max.) or 2-10 V (using provided 500 Ω resistors)
Resolution:	12 bits (0.004 mA or 2 mV)
Range Settings:	6 settings, logarithmically spaced: 0.01-1000
Number of Analog Outputs:	4 (‘+’ and ‘–‘ screw terminal positions for sensor signal and exponential growth rate)
Digital Output:	RS-232/DB9 and USB
Communications Cable Connector:	DB9 (M/F) or USB (A/B)
Communications Cable Lenght:	Standard: 2000 mm Custom: up to 15000 mm
BE2100 Base Unit Physical Specifications
Overall Width:	159 mm
Overall Length: (without connectors)	132 mm
Overall Height: (without feet)	82 mm
BE2100 Base Unit Environmental Specifications
Operating Temperature:	0 to 40°C
Operating Environment:	Dry locations only