Chapter 1 — Installation and Initial Setup Page 9
B. RS-232 Reference Port. This connector is used for diagnostics
when the LOOP switch is in the OPEN LOOP position. In CLOSED
LOOP mode, it transmits the digital outputs of the hygrometer: dew
point, temperature, and RH.
C. RS-232 Controller Port. This connector is used when down-
loading humidity profiles from Prostep into the HumiLab.(see
Chapter 3).
D. AC receptacle. The AC input power is connected to the power
receptacle. The input voltage is noted on the label to the right. The
input voltage is configured at the factory and must be determined
prior to shipment.
E. Cooling fan (not visible). The fan is used for cooling the elec-
tronics. The fan must stay clean and clear of any obstruction to
prevent damage to the internal electronics.
Rear input/output fitting connections
Mechanical connections to the Humilab are made on the rear panel
as shown in Figure 4.
Power Requirements 103–127 VAC
48–66 Hz, 80 VA max
198–264 VAC
48–66 Hz, 80 VA max
Fuse Type 1A Type T .5A Type T
COOLANT IN DRY AIR IN
COOLANT OUT DRAIN
B
C
A
D
Figure 4 — Humilab mechanical connection
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