NATIONAL CONTROLS TC280, TNC-TC140 User Manual
3-10
POLYPROPYLENE COVER
TEMP. ADJUST
SHAFT
6/32 THREADED
STANDOFF (2 PL.),
3/8 IN. MOUNTING
SCREW LENGTH MAX.
.206.875
1.75
4.250
.820
1.64
.275
.95 MAX
2.275 MAX
CONNECTOR
#8 SCREW TERMINAL
L1 HTR
N
22AWG WIRE 12 IN. LONG
WITH .250 FEMALE TERMINAL
AND .250 MALE TERMINAL
"PIGGYBACK"
PROBE
2 POS.
(4571-6)
TEMPERATURE MONITORS/CONTROLS
Electronic Temperature Controller
TC280 Series
FEATURES
●
Long term setpoint stability
●
Close temperature control
●
Footprint compatible with electro-
●
mechanical thermostats
●
OFF setpoint adjustment position
●
Probe failure detect
●
High current rating
●
Long contact life
This Controller provides a reliable, cost
effective way to control temperature of heat
ed water within a limited temperature range.
Operating Logic: Upon application of input
voltage, and if the sensed temperature is
below the setpoint, the internal relay will
be activated, turning on the heater load.
The load will stay activated until the sensed
temperature reaches setpoint value. The
setpoint adjustment at the fully counter
clockwise position has an OFF setting that
can be used during equipment set-up to
allow water to fill the vessel before allowing
the heaters to be activated.
Note: The temperature adjustment OFF position is not a mechanical OFF condition, in case of controller failure it may not turn off
the heater load.
File #E104595
SPECIFICATIONS
CONTROL
Temperature Control Mode: ON/OFF, +2°F to
+4°F hysteresis
Temperature Sensor: Thermistor, ±2% inter
changeable within measurement range
Set point Adjustment Range: 175°F ±5°F to
205°F +3°F/-1°F; Fully CCW is in OFF position
Probe Fault Detect: Open or shorted probe will
cause output relay to be deactivated
INPUT
Power Consumption: 5 VA max.
Operating Voltage: 120, 220 VAC ±10%,
50/60 Hz
OUTPUT
-
Type: Relay contacts, SPST (1 Form A)
Rating: 20 A max. resistive at 120 VAC 10 A max.
resistive at 250 VAC 100 mA at 5 VDC min. load
current
Life: 250,000 cycles min. at full load
Dielectric Breakdown: 2500 VAC RMS, between
probe terminals and input terminals
MECHANICAL
Termination: L1 and HTR #8 screw with clamp;
L2 white -12” long - 22 AWG wire terminated with
1/4 inch female and 1/4” male piggy back pushon terminal
Probe: Screw type caged terminal block
ENVIRONMENTAL
Ambient Operating Range: 0°C to 60°C
-
ORDERING INFORMATION
INPUT PART NUMBER
12” Probe Tube ASP-TC280-012
14” Probe Tube
Important Notice: This control should only be used in a system
incorporating an independently operating high temperature limiting
device which will safely disable the heaters, preventing property
damage or bodily injury, in the event of failure, malfunction or normal wear-out of this control.
AMETEK National Controls Corp. • 1725 Western Drive • West Chicago, Illinois 60185 • Tel: 800-323-2593 • 630-231-5900 • FAX: 630-231-1377 • www.nationalcontrols.com
120 V TNC-TC280-120
240 V
ACCESSORY PART NUMBER
TNC-TC280-240
ASP-TC280-014
Transformers
C R
10V
5VA
LOAD
2.265
2.65
2.0
WHITE
BLACK
B10-N0120-011
.375
.687
C
L
.50
.156 DIAMETER HOLE
2 PLACES
12" LEADS (2)
(4572-4)
B12-N0120-015
3.250
2.812
1.906
YEL
YEL
.750
1.375
1.640
.187 DIAMETER HOLE
2 PLACES
8" LEADS
4 PLACES
(4572-2)
BLK
WHT
YEL
YEL
B24-N0120-011
3.250
2.812
1.906
YEL
YEL
.750
1.375
1.640
.187 DIAMETER HOLE
2 PLACES
8" LEADS
4 PLACES
(4572-1)
BLK
WHT
YEL
YEL
B24-NO220-011
3.250
2.812
1.906
YEL
YEL
.750
1.375
1.640
.187 DIAMETER HOLE
2 PLACES
8" LEADS
4 PLACES
(4572-3)
BLK
BLK
YEL
YEL
ASP-TM100-012
6.00
.187 MAXIMUM
4 FOOT, 2 CONDUCTOR CABLE
(4571-3)
.375
.875
– .062
1.5
.125
72 - 75.5 INCHES
22GA WIRE
1 RED JACKET
1 BLACK JACKET
ASP-TM100-011
(4571-9)
1/8" NPT
.472
.965
.435
.195 DIA.
EST-03/16-011
ORDERING INFORMATION
120 to 10 VAC, 5 VA, 50/60 Hz B10-NO120-011
120 to 12 VAC, 5 VA, 50/60 Hz
120 to 24 VAC, 5 VA, 50/60 Hz
240 to 24 VAC, 10 VA, 50/60 Hz
B12-NO120-015
B24-NO120-011
B24-NO220-011
TEMPERATURE MONITORS/CONTROLS ACCESSORIES
3-11
Probes
The temperature probes listed can only
be used on TNC-TM100 (discontinued),
TNC-TM110, and TNC-TM200 Series
temperature indicators.
ORDERING INFORMATION
Refrigerator / Freezer Probe ASP-TM100-011
Immersion Probe / Stainless Steel
20’ Refrigerator / Freezer Probe
60’ Refrigerator / Freezer Probe
Compression Fitting for
ASP-TM100-012
ASP-TM100-012
ASP-TM100-014
ASP-TM100-015
EST-03/16-011
AMETEK National Controls Corp. • 1725 Western Drive • West Chicago, Illinois 60185 • Tel: 800-323-2593 • 630-231-5900 • FAX: 630-231-1377 • www.nationalcontrols.com
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