Brochure
HKS-8065
40
© Copyright 2006 TAC. All Rights Reserved. F-27383-1
Duct Enthalpy Transmitter
Model Chart
Specifications
Accessories
Typical Applications
Figure 1 Typical Application.
For proportional enthalpy control used with receiver-controller. For
differential enthalpy control, two HKS-8065 are used with AK-52101 to
determine if return or outdoor air has the higher enthalpy. May be used
with receiver-gauges for continuous enthalpy indication at any local or
remote position.
Features:
• Designed to sense total heat (enthalpy) in air ducts.
• Two highly sensitive sensing elements (nylon for relative humidity, bimetal for
temperature) combine to produce 3 to 15 psig (20.7 to 103.4 kPa) output over the
range of 16 to 40 BTU per pound of dry air (37 to 93 kj/kg).
• Sensing element designed for duct insertion.
Model No. Description
HKS-8065 Duct humidity transmitter.
Sensing element Combination bimetal/nylon.
Sensing
Span 24 btu/lb (56 KJ/Kg) dry air.
Range 16 to 40 btu/lb (37 to 93 KJ/Kg) dry air.
Output air signal 3 to 15 psig (21 to 103 kPa).
Action Direct.
Ambient limits
Shipping -40 to 150qF (-40 to 65qC). 0 to 98% RH, non-condensing.
Operating
-20 to 125qF (-29 to 52qC). 10 to 98% RH, non-condensing. 10 to 2500 fpm (0.05 to 12.7 m/s)
sensed air velocity.
Supply air pressure Clean, oil free, dry air required (reference EN-123).
Nominal 20 psig (138 kPa) through 0.0075 in. (190 Pm) restrictor.
Minimum 18 psig (124 kPa).
Maximum 30 psig (207 kPa).
Air connections Barbed for 1/4 in. O.D. plastic tube.
Air consumption for sizing air
compressor
41.5 scim (11.3 mL/s) at 20 psig (138 kPa) supply through a 0.0075 in. (190 Pm) restrictor.
Air capacity for sizing air mains 48 scim (13.2 mL/s) when supplied by a 20 psig (138 kPa) supply air.
Mounting Duct.
Dimensions
4-3/16 H x 4 W x 4 D in. (106 x 102 x 102 mm); tube mounting hole diameter is 1-3/8 in. (35 mm) and
tube insertion length is 4-1/4 in. (108 mm).
Model No. Description
AT-532-098-1-1 0.0075 restrictor (white).
AT-532-098-1-2 0.005" restrictor (Red).
AT-532-098-1-3 0.010" restrictor (Blue).
AT-533-67 Adaptor 1/4 in. plastic tubing to 3/16 in. copper or 1/4 in. copper with 1/4 in. solder coupling (not included).
HKS
-
8065
1 2
S
M
1 1000 ft. (305m) max. between
gauge and transmitter.
2 200 ft. (61m) max. between
restrictor and transmitter.
HKS-8065
Duct Enthalpy Transmitter