ACI-Automation Components A/20K-RA-12-GD Data Sheet
Automation Components, Inc.
GD
BB
PB
4X
TEMPERATURE | THERMISTORS | RIGID AVERAGING
RIGID AVERAGING
Four Point Averaging, Thermistor
The ACI Thermistor Rigid Averaging Series features a ¼” Diameter stainless steel sensing
element with two, 12 inch, 22 AWG Etched Teon colored lead wires to dierentiate the
dierent sensor types. The sensors in this series are manufactured with 4 sensing points in
lengths from 12” to 48”. The rigid averaging sensors will provide a better average temperature
of the air inside the duct when compared to a single point sensing element. Each of the
elements is hermetically sealed to prevent any moisture intrusion and includes an integrated
foam pad to properly seal the duct and dampen vibrations when installed. The benets of
using the rigid averaging sensor is that it mounts like a standard single point duct sensor but
includes three additional sensing points for better control. The sensor length should be
determined by the size of your duct. Our standard enclosures include the galvanized junction
box “-GD” or plastic duct enclosure “-PB” with the hinged cover depending on your preference.
This series can be ordered with optional NEMA/IP rated weather proof enclosures as referenced in the ordering grid.
Applications: Air Handlers, Roof Top Units, Mixed Air/Discharge/Supply/Return Air Temperature Monitoring, Data Centers, Hospitals
PRODUCT SPECIFICATIONS
Sensor Type | Sensor Curve:
Number Sensing Points:
Number Wires:
Sensor Output @ 25ºC (77ºF)
(Lead Wire Colors):
Accuracy 0-70ºC (32-158ºF):
Stability:
Response Time (63% Step Change):
Power Dissipation Constant:
Enclosure Temperature Range:
Storage Temperature Range:
Operating Humidity Range:
Probe Material:
Probe Diameter:
Fitting Material | Flammability Rating:
Foam Pad Material | Flammability Rating:
Lead Length | Conductor Size:
Lead Wire Insulation | Wire Rating:
Conductor Material:
Product Dimensions | Product Weight:
Agency Approvals:
Thermistor | Non-Linear, NTC (Negative Temperature Coecient)
Four
Two (Non-Polarity Sensitive)
A/1.8K: 1.8KΩ nominal | (Red/Yellow)
A/3K: 3KΩ nominal | (White/Brown)
A/AN (Type III): 10KΩ nominal | (White/White)
A/AN-BC: 5.238KΩ nominal | (White/Yellow)
A/CP (Type II): 10KΩ nominal | (White/Green)
+/-0.20ºC (+/-0.36ºF)
Sensor Dependent; Contact ACI for more information on the sensor in question.
10 Seconds nominal
4 mW/ºC except A/1.8K Series = 2 mW; A/100KS Series: 6 mW
“-GD” Enclosure: -40 to 115ºC (-40 to 239ºF), Galvanized Steel, NEMA 1 (IP10)
“-PB” Enclosure: -30 to 90ºC (-22 to 194ºF), ABS Plastic, UL94-HB, Plenum Rated
“-BB” Enclosure: -40 to 115ºC (-40 to 239ºF), Aluminum, NEMA 3R (IP14)
“-4X” Enclosure: -40 to 70ºC (-40 to 158ºF), Polystyrene Plastic, NEMA 4X (IP66)
-40 to 85ºC (-40 to 185ºF)
10 to 95% RH, non-condensing
304 Stainless Steel
0.250” (6.35mm)
Polyamide 66 (High Performance Nylon) | UL94-HB
Neoprene/EPDM/SBR Polymer | UL94-HBF; FMVSS-302; MIL-R-6130C
12” (30.5cm) | 22 AWG (0.65mm)
Etched Teon (PTFE) Colored Leads | MIL-W-16878/4 (Type E)
Silver Plated Copper
See table on back of Product Data sheet
CE, RoHS2, WEEE
A/CSI: 10KΩ nominal | (Green/Yellow)
A/10KS: 10KΩ nominal | (White/Blue)
A/10K-E1: 10KΩ nominal | (Gray/Orange)
A/20K: 20KΩ nominal | (Brown/Blue)
A/100KS: 100KΩ nominal | (Black/Yellow)
Call: 1-888-967-5224 | Web: www.workaci.com
TEMPERATURE | ##
TEMPERATURE | THERMISTORS | RIGID AVERAGING
DIMENSIONAL DRAWING, WEIGHTS
Plastic Box Enclosure [PB]
3.60”
(91.44mm)
Galvanized Enclosure [GD]
Bell Box Enclosure [BB]
2.25”
(57.15mm)
4.79” (121.55mm)
3.88” (98.60mm)
2.95”(75mm)
4.79”
(121.55mm)
4.20”
(106.68mm)
2.35” (59.80mm)
Available with 12”,
18”, 24”, and 36”
Probe Lengths
Available with 12”,
18”, 24”, and 36”
Probe Lengths
1.78” (45.18mm)
Available with 12”,
18”, 24”, and 36”
Probe Lengths
2.34” (59.38mm)
Automation Components, Inc.
xx = Sensor Type | yy = Insertion Length
Plastic Box Enclosure [PB] Weights
ACI Model #
A/xx-RA-yy-PB
ACI Model #
A/xx-RA-yy-PB
Galvanized Enclosure [GD] Weights
ACI Model #
A/xx-RA-yy-GD
ACI Model #
A/xx-RA-yy-GD
Bell Box Enclosure [BB] Weights
ACI Model #
A/xx-RA-yy-BB
ACI Model #
A/xx-RA-yy-BB
12” (Probe Length)
0.28 lbs. (0.127 kg)
24” (Probe Length)
0.32 lbs. (0.145 kg)
12” (Probe Length)
0.70 lbs. (0.317 kg)
24” (Probe Length)
0.78 lbs. (0.354 kg)
12” (Probe Length)
0.74 lbs. (0.336 kg)
24” (Probe Length)
0.78 lbs. (0.354 kg)
18”
0.30 lbs. (0.136 kg)
36”
0.36 lbs. (0.163 kg)
18”
0.74 lbs. (0.336 kg)
36”
0.82 lbs. (0.372 kg)
18”
0.78 lbs. (0.354 kg)
36”
0.84 lbs. (0.381 kg)
(Probe Length)
(Probe Length)
(Probe Length)
(Probe Length)
(Probe Length)
(Probe Length)
NEMA 4X Enclosure [4X]
CUSTOM ORDERING
A. Sensor Series
B. Model Series
C. Conguration
E. Enclosure
F. NIST
Select One (1)
No Selection Required
Select One (1)
No Selection Required
Select One (1)
Select One (1)
3.88”(98.60mm)
3.70” (93.98mm)
Standard Views
3.70”
(93.98mm)
Available with 12”,
18”, 24”, and 36”
Probe Lengths
2.24” (56.77mm)
NEMA 4X Enclosure [PB] Weights
ACI Model #
A/xx-RA-yy-4X
ACI Model #
A/xx-RA-yy-4X
12” (Probe Length)
0.38 lbs. (0.172 kg)
24” (Probe Length)
0.44 lbs. (0.200 kg)
Product Weights
Model # Example:
A/A.1.8KB.RAC.18”
D.
A/
1.8K | 3K | AN | AN-BC | CP | CSI | 10KS | 10K-E1 | 20K | 100KS
RA = Rigid Averaging
12” = 12” Probe | 18” = 18” Probe | 24” = 24” Probe | 36” = 36” ProbeD. Probe Length
GD = Galvanized | PB = Plastic | BB = Aluminum, NEMA 3R | 4X = NEMA 4X
---- = No NIST Certicate | NIST = NIST Certicate (Must Specify 1, 3 or 5 Points)
(Probe Length)
18”
0.40 lbs. (0.181 kg)
(Probe Length)
36”
0.50 lbs. (0.227 kg)
GDE.NIST
F.
MODEL #
A/
RA
TEMPERATURE | ##
Revision C0000002 | Rev 1.0
Call: 1-888-967-5224 | Web: www.workaci.com
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