Specifications - Triatek - LIT-12014409 - HMS1655 Fume Hood Controller

HMS1655 Fume Hood Controller User Guide

Product name
HMS1655 Fume Hood Controller
Document type
User Guide
Document number
Revision date
Product status
Table 1. Electrical specifications
Specification Description
Face velocity range 0 FPM to 200 FPM
Accuracy of measurement. NIST traceable/individual certification available as option ±2 FPM
4 analog inputs 4 mAdc to 20 mAdc, 0 VDC to 5 VDC, or 0 VDC to 10 VDC
4 analog ouputs 4 mAdc to 20 mAdc, 0 VDC to 5 VDC, or 0 VDC to 10 VDC
2 thermistor inputs NTC type 2 or 3, 10kΩ @ 25°C (77°F)
4 digital inputs Active-high or active-low
4 relay outputs 1A at 24 VDC
Control signal wire size 18 AWG minimum
Power supply Class 2, 24 VAC ±10%, 30 VA universal 120/240 to 24 VAC, 60/50 Hz, step-down isolation transformer provided
Note: NIST traceable/individual certification accuracy is ± 5 FPM when velocity drops below 60 FPM or exceeds 140 FPM.
Table 2. Commuication specifications
Specification Description
BACnet® MS/TP network Two-wire twisted pair, RS-485 signaling
Metasys N2 network Two-wire twisted pair, RS-485 signaling
Cable type Belden 1325A
Table 3. Touchscreen user interface specifications
Specification Description
LCD size 3.2 in. (81.28 mm) diagonal
LCD type Transmissive
Resolution 240 pixels x 320 pixels (portrait)
Viewing area 2 in. x 2.6 in. (50.6 mm x 66.8 mm)
Color depth 18-bit or 262 K colors
Backlight color White
Luminous intensity Minimum 2500 cd/m2
Table 4. Mechanical specifications
Specification Description
HMS1655 display module housing (H x W x D) 5 in. x 3 in. x 0.75 in. (127 mm x 76.2 mm x 19.05 mm)
HMS1655 air flow sensor housing (H x W x D) 3 in. x 2 in. x 2.7 in. (76.2 mm x 50.8 mm x 68.5 mm)
Stainless steel cover plate for flow tube (W x H x D) 2.7 in. x 4.5 in. x 0.2 in. (50.8 mm x 114.3 mm x 68.5 mm)
HMS1655 with flow tube cover plate Approximately 3.5 lb
HMS1655 with air flow sensor Approximately 4.0 lb
HMS1655 mounting options Surface
Flow tube cover plate mounting Surface
HMS1655 air flow sensor mounting Surface
Table 5. Environmental specifications
Specfication Description
Operating temperature 32°F to 125°F (0°C to 52°C) operating
Operating humidity 10% to 95% RH, non-condensing
  • Equipment damage
  • Failure to follow the wiring diagrams could result in damage to your equipment and could void your warranty. Wiring diagrams can also be found at www.triatek.com.
  • Under no circumstances should a single transformer be split between actuator and controller. Doing so will damage the actuator, the transformer, the controller or all units. A single 120/24V 30Va transformer is required for the controller and a separate 120/24V 20Va transformer is required for the actuator.