TAC Pneumatic Products Catalog
TAC Pneumatic Products Catalog
TAC Pneumatic Products Catalog
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HKS-8065<br />
HKS-8065<br />
Duct Enthalpy Transmitter<br />
For proportional enthalpy control used with receiver-controller. For<br />
differential enthalpy control, two HKS-8065 are used with AK-52101 to<br />
determine if return or outdoor air has the higher enthalpy. May be used<br />
with receiver-gauges for continuous enthalpy indication at any local or<br />
remote position.<br />
Features:<br />
• Designed to sense total heat (enthalpy) in air ducts.<br />
• Two highly sensitive sensing elements (nylon for relative humidity, bimetal for<br />
temperature) combine to produce 3 to 15 psig (20.7 to 103.4 kPa) output over the<br />
range of 16 to 40 BTU per pound of dry air (37 to 93 kj/kg).<br />
• Sensing element designed for duct insertion.<br />
Model Chart<br />
Model No. Description<br />
HKS-8065 Duct humidity transmitter.<br />
Specifications<br />
Sensing element<br />
Sensing<br />
Combination bimetal/nylon.<br />
Span 24 btu/lb (56 KJ/Kg) dry air.<br />
Range 16 to 40 btu/lb (37 to 93 KJ/Kg) dry air.<br />
Output air signal 3 to 15 psig (21 to 103 kPa).<br />
Action<br />
Ambient limits<br />
Direct.<br />
Shipping -40 to 150�F (-40 to 65�C). 0 to 98% RH, non-condensing.<br />
Operating<br />
-20 to 125�F (-29 to 52�C). 10 to 98% RH, non-condensing. 10 to 2500 fpm (0.05 to 12.7 m/s)<br />
sensed air velocity.<br />
Supply air pressure Clean, oil free, dry air required (reference EN-123).<br />
Nominal 20 psig (138 kPa) through 0.0075 in. (190 �m) restrictor.<br />
Minimum 18 psig (124 kPa).<br />
Maximum 30 psig (207 kPa).<br />
Air connections Barbed for 1/4 in. O.D. plastic tube.<br />
Air consumption for sizing air<br />
compressor<br />
41.5 scim (11.3 mL/s) at 20 psig (138 kPa) supply through a 0.0075 in. (190 �m) restrictor.<br />
Air capacity for sizing air mains 48 scim (13.2 mL/s) when supplied by a 20 psig (138 kPa) supply air.<br />
Mounting Duct.<br />
Dimensions<br />
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<br />
tube insertion length is 4-1/4 in. (108 mm).<br />
Accessories<br />
Model No. Description<br />
AT-532-098-1-1 0.0075 restrictor (white).<br />
AT-532-098-1-2 0.005" restrictor (Red).<br />
AT-532-098-1-3 0.010" restrictor (Blue).<br />
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).<br />
Typical Applications<br />
1 2<br />
M<br />
S<br />
HKS-8065<br />
Duct Enthalpy Transmitter<br />
1 1000 ft. (305m) max. between<br />
gauge and transmitter.<br />
2 200 ft. (61m) max. between<br />
restrictor and transmitter.<br />
Figure 1 Typical Application.<br />
40 © Copyright 2006 <strong>TAC</strong>. All Rights Reserved. F-27383-1
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