LB-HMS1655-S

The LB-HMS1655-S from Johnson Controls is specifically designed as a fume hood controller, incorporating both sidewall and sash sensors for efficient monitoring. Its communication capabilities include protocols such as BACnet MS/TP and Metasys N2, enabling integration into various building management systems. The unit is equipped with an 18-bit color TFT display, using a resistive touchscreen for user interaction, ensuring clarity and usability.

Operating with a voltage of 24 VAC, ±10%, this device performs within a temperature range of 0°C to 51.7°C. It can sustain a relative humidity range from 10% to 95% without condensation, making it suitable for laboratory environments. Power consumption is rated at 30 VA, which complements its operational efficiency.

In terms of functionality, the face velocity range extends up to 200 feet per minute (fpm) and maintains an accuracy of ±2 fpm in the 60-140 fpm range. For readings outside this band, a maximum deviation of ±5 fpm is noted. The sidewall sensors operate using a digital ultra-low differential pressure type, providing precise measurements essential for fume hood management.

The sash position sensor accommodates vertical heights of up to 50 inches, allowing adaptability in various setups. For input and output versatility, the device features four universal analog inputs compatible with multiple voltage ranges (4-20mA/0-5VDC/0-10VDC) and includes two thermistor inputs. Moreover, the device can output through four universal outputs and provides four digital inputs that support active-high or active-low configurations over a range of voltages.

Three relay outputs are included, featuring normally open (N.O.) contacts rated for 1 Amp at 24 VDC, ensuring compatibility with various control systems. This comprehensive specification makes the LB-HMS1655-S an effective choice for enhancing laboratory safety and control systems.