7
Temperature Probes:
NTC
The control is shipped with an NTC (Negative Temperature
Coefficient) sensor, with a cable length of 7½ feet. Cable
length can be extended up to 400 feet by appropriately splic-
ing and adding additional cable (22 AWG or larger diameter)
PTC
The control may be connected to an existing PTC (Positive
Temperature Coefficient) sensor. Make sure the PTC sensor
meets the specifications tables below. Failure to do so will
result in temperature inaccuracies. The PTC input may not be
NTC TEMPERATURE VERSUS RESISTANCE TABLES
PTC TEMPERATURE VERSUS RESISTANCE TABLES
as needed – polarity is not important. When extending cable
length, verify temperature accuracy and use the menu Ambi-
ent Temperature Offset (OFS) settings to compensate accord-
ingly if required.
extended more than 50 feet, and the wire gauge should be
18 AWG wire or larger diameter. Be sure the probe attached
matches the resistance vs. temperature tables or temperature
inaccuracies may occur.
SPECIFICATIONS
Temperature
(°F) (°C)
Resistance
(K
Ω
)
-40
-40
328.29
-31
-35
236.83
-22
-30
172.90
-13
-25
127.65
-4
-20
95.23
5
-15
71.74
14
-10
54.56
23
-5
41.85
32
0
32.37
41
5
25.23
Temperature
(°F) (°C)
Resistance
(K
Ω
)
50
10
19.82
59
15
15.67
68
20
12.48
77
25
10.00
86
30
8.07
95
35
6.55
104
40
5.34
113
45
4.38
122
50
3.61
131
55
2.99
Temperature
(°F) (°C)
Resistance
(K
Ω
)
140
60
2.49
149
65
2.09
158
70
1.76
167
75
1.48
176
80
1.26
185
85
1.07
194
90
0.92
203
95
0.79
212
100
0.68
221
105
0.59
Temperature
(°F) (°C)
Resistance
(K
Ω
)
-40
-40
613
-31
-35
640
-22
-30
668
-13
-25
697
-4
-20
727
5
-15
758
14
-10
789
23
-5
822
32
0
855
41
5
889
Temperature
(°F) (°C)
Resistance
(K
Ω
)
50
10
924
59
15
960
68
20
997
77
25
1035
86
30
1074
95
35
1113
104
40
1153
113
45
1194
122
50
1236
131
55
1279
Temperature
(°F) (°C)
Resistance
(K
Ω
)
140
60
1323
149
65
1368
158
70
1413
167
75
1459
176
80
1506
185
85
1554
194
90
1602
203
95
1652
212
100
1702
221
105
1753
Load Output Relay:
Ratings (Maximum):
120VAC 208VAC 240VAC
Full Load Amps NC & Load
16 A
9.2 A
8 A
Locked Rotor Amps NC & Load
96 A
55.2 A 48 A
Non-Inductive Amps NC & Load
16 A
16 A
16 A
Horsepower NC & Load
1 hp
1 hp
1 hp
24 VAC NC & Load
100 VA, 30 VAC Max (Class 2)
Pilot Duty NC & Load
125 VA, 24 to 240 VAC
• Minimum Load Rating: 1 Amp @ 24 VAC
• Note: the above minimum current/voltage is specified
to assure proper operation.
NOTE:
For use on single phase circuits only.
Alarm Relay Ratings
(Maximum):
N.O. contact: 1 Amp, 5 to 24 V, AC or DC
Operating Ambient Ratings (Control Enclosure):
Operating Temperature:
-29°F to 140°F (-34° to 60°C)
Storage Shipping Ambient Ratings:
Storage Temperature:
-40°F to 185°F (-40° to 85°C)
Operating Humidity:
0 to 95% Relative Humidity,
Non-Condensing
Maximum Dew Point:
85°F (29°C)
Temperature Set-Point Range:
Set-Point Range: -40° to 220°F (-40° to 104°C)
Differential Range:
1 to 30 (Degrees F or Degrees C)
Case:
NEMA 1 Enclosure, Flammability Rating: UL94VO
