Temperature Monitoring Relay
last update: December 25, 2018
Power supply voltage | 100 to 240 VAC 50/60 Hz | 24 VAC 50/60 Hz or 24 VDC | |
---|---|---|---|
Allowable voltage range | 85% to 110% of power supply voltage | ||
Power consumption | 5 VA max. | 2 W max. (24 VDC), 4 VA max. (24 VAC) | |
Sensor inputs | K8AK-TH11S | Thermocouple: K, J, T, E; Platinum-resistance thermometer: Pt100, Pt1000 | |
K8AK-TH12S | Thermocouple: K, J, T, E, B, R, S, PLII | ||
Output relay | One SPDT relay (5 A at 250 VAC, resistive load) | ||
External inputs
(for latch setting) |
Contact input | ON: 1 kΩ max., OFF: 100 kΩ min. | |
Non-contact input | ON residual voltage: 1.5 V max., OFF leakage current: 0.1 mA max. | ||
Leakage current: Approx. 10 mA | |||
Setting method | Rotary switch setting (set of three switches) | ||
Indicators | Power (PWR): Green LED, Relay output (ALM): Red LED | ||
Other functions | Alarm Mode (upper limit/lower limit), non-fail safe/fail safe selection, output
latch, setting protection, temperature unit °C/°F |
||
Ambient operating temperature | -20 to 55°C (with no condensation or icing) | ||
Ambient operating humidity | Relative humidity: 25% to 85% | ||
Storage temperature | -25 to 65°C (with no condensation or icing) |
Measurement accuracy | K8AK-TH11S: ±1% of the setting range or ±4°C, whichever is larger
K8AK-TH12S: ±1% of the setting range (±1% FS) |
|
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hysteresis width | 2°C | |
Output relay | Rated load
Resistive load 5 A at 250 VAC 5 A at 30 VDC Maximum switching capacity: 1,250 VA, 150 W Minimum load: 5 VDC, 10 mA (reference values) Mechanical life: 10 million operations min. Electrical life: 5 A at 250 VAC or 30 VDC: 50,000 operations 3 A at 250 VAC/30 VDC: 100,000 operations |
|
Sampling cycle | 100 ms | |
Insulation resistance | 20 MΩ (at 500 V) between charged terminals and exposed uncharged parts
20 MΩ (at 500 V) between any charged terminals (i.e., between input, output, and power supply terminals) 20 MΩ (at 500 V) between contacts (open) |
|
Dielectric strength | 2,300 VAC, 50/60 Hz for 1 min between terminals of different charge | |
Vibration resistance | Frequency: 10 to 55 Hz, 0.35-mm single amplitude
10 sweeps of 5 min each in X,Y, and Z directions |
|
Shock resistance | 100 m/s2, 3 times each in 6 directions along 3 axes | |
Weight | Approx. 160 g | |
Degree of protection | IP20 | |
Memory protection | Non-volatile memory (number of writes: 1 million) | |
Safety
Standards |
Approved
standards |
UL 61010-1
Installation environment (pollution level 2, installation category II) |
EMC | EN 61326-1 Industrial electromagnetic environment | |
Application
standards |
UL 61010-1 (Recognition), Korean Radio Waves Act (Act 10564), CSA: C22.2 No.14 | |
Terminal screw
tightening torque |
0.49 to 0.59 N·m | |
Crimp terminals | Two solid wires of 2.5 mm2 or two ferrules of 1.5 mm2 with insulation sleeves can be tightened together. | |
Case color | N1.5 | |
Case material | PC and ABS, UL 94 V-0 | |
Mounting | Mounts to DIN Track. | |
Dimensions | 22.5 × 100 × 90 mm (W × D × H) |
TH11S | °C | °F | ||
---|---|---|---|---|
Input type | Lower limit | Upper limit | Lower limit | Upper limit |
K | -20 | 1019 | -40 | 1039 |
J | -20 | 870 | -40 | 1039 |
T | -20 | 420 | -40 | 740 |
E | -20 | 620 | -40 | 1039 |
Pt100 | -20 | 870 | -40 | 1039 |
Pt1000 | -20 | 870 | -40 | 1039 |
TH12S | °C | °F | ||
---|---|---|---|---|
Input type | Lower limit | Upper limit | Lower limit | Upper limit |
K | -20 | 1320 | -40 | 2340 |
J | -20 | 870 | -40 | 1540 |
T | -20 | 420 | -40 | 740 |
E | -20 | 620 | -40 | 1140 |
B | 0 | 1820 | 0 | 3240 |
R | -20 | 1720 | -40 | 3040 |
S | -20 | 1720 | -40 | 3040 |
PLII | -20 | 1320 | -40 | 2340 |
last update: December 25, 2018