KEYENCE TR-H08

Model

NR-TH08 ^*1

Type

High-accuracy temperature/voltage measurement unit

Input method

Floating unbalanced input, channels insulated from each other, CH inputs insulated from other units (PC),
channels not insulated from each other for resistance thermometers

Number of channels

Input: 8 ^*2

Measurement cycle

Fastest sampling cycle: 100 ms (A/D integration time: 2 ms) to 1 h

A/D converting system

Delta-sigma method

A/D resolution

24 bit

A/D integration time

2 ms, 16.7 ms, 20 ms

Input type

Voltage: ±50 V, ±10 V, ±5 V, ±1 V, ±0.5 V, ±0.1 V; Thermocouple; K, J, E, T, R, S, B, N, C;
Resistance thermometer: Pt100, JPt100 3-line type; Specified current: 1 mA

Measurement range

±50 V

Measurable range: −55.00 to +55.00 V
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±2 digits
Display resolution: 10 mV

±10 V

Measurable range: −11.000 to +11.000 V
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±2 digits
Display resolution: 1 mV

±5 V

Measurable range: −5.500 to +5.500 V
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±2 digits
Display resolution: 1 mV

±1 V

Measurable range: −1.1000 to +1.1000 V
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±2 digits
Display resolution: 0.1 mV

±500 mV

Measurable range: −550.0 to +550.0 mV
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±2 digits
Display resolution: 0.1 mV

±100 mV

Measurable range: −110.00 to +110.00 mV
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±2 digits
Display resolution: 0.01 mV

K

Measurable range: −100 to +1372°C -148°F to +2501.6°F, −200 to −100°C -328°F to -148°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±0.6°C ±1.1°F, ±0.05% of rdg ±0.9°C ±1.6°F
Display resolution: 0.05°C 0.09°F
^*3

J

Measurable range: −100 to +1200°C -148°F to +2192°F, −200 to −100°C -328°F to -148°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±0.6°C ±1.1°F, ±0.05% of rdg ±0.8°C ±1.4°F
Display resolution: 0.05°C 0.09°F
^*3

E

Measurable range: −100 to +1000°C -148°F to +1832°F, −200 to −100°C -328°F to -148°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±0.6°C ±1.1°F, ±0.05% of rdg ±0.8°C ±1.4°F
Display resolution: 0.05°C 0.09°F
^*3

T

Measurable range: −100 to +400°C -148°F to +752°F, −200 to −100°C -328°F to -148°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±0.5°C ±0.9°F, ±0.05% of rdg ±0.8°C ±1.4°F
Display resolution: 0.01°C 0.02°F
^*3

N

Measurable range: 0 to 1300°C 32°F to 2372°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±0.6°C ±1.1°F
Display resolution: 0.05°C 0.09°F
^*3

C

Measurable range: 1500 to 2315°C 2732°F to 4199°F, 0 to 1500°C 32°F to 2732°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±1.1°C ±2.0°F, ±0.05% of rdg ±0.8°C ±1.4°F
Display resolution: 0.05°C 0.09°F
^*3

R

Measurable range: 300 to 1768°C 572°F to 3214.4°F, 0 to 300°C 32°F to 572°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±0.8°C ±1.4°F, ±0.05% of rdg ±1.6°C ±2.9°F
Display resolution: 0.05°C 0.09°F
^*3

S

Measurable range: 300 to 1768°C 572°F to 3214.4°F, 0 to 300°C 32°F to 572°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±0.9°C ±1.6°F, ±0.05% of rdg ±1.6°C ±2.9°F
Display resolution: 0.05°C 0.09°F
^*3

B

Measurable range: 400 to 600°C 752°F to 1112°F, 600 to 1820°C 1112°F to 3308°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.05% of rdg ±1.7°C ±3.1°F, ±0.05% of rdg ±1.0°C ±1.8°F
Display resolution: 0.05°C 0.09°F
^*3

Pt100

Measurable range: −200 to +660°C -328°F to +1220°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.1% of rdg ±0.3°C ±0.5°F
Display resolution: 0.02°C 0.04°F
^*4

JPt100

Measurable range: −200 to +510°C -328°F to +950°F
Measurement accuracy (A/D integration time: 16.7 ms, 20 ms): ±0.1% of rdg ±0.3°C ±0.5°F
Display resolution: 0.02°C 0.04°F
^*4

Reference contact compensation

Switchable between internal and external (individual unit setting, 0°C 32°F for external)

Reference contact compensation accuracy

±0.7°C ±1.3°F (23°C ±2°C 73.4°F ±3.6°F, at input terminal temperature equilibrium)

Maximum input voltage

±60 V (rated)

Input impedance

Thermocouple, Voltage: 5 V range or lower

10 MΩ or more

Voltage: 50 V, 10 V range

Approx. 1 MΩ

Withstand voltage

Measurement input terminal - System bus

1500 VAC (50/60 Hz) for 1 minute

Mutually between measurement input terminals

120 Vp-p AC/DC

Input signal source resistance

Voltage/thermocouple

2 kΩ or less

Resistance thermometer

10 Ω or less per line (three lines must be equal)

Thermocouple burnout

Wire breakage detected in the thermocouple range by applying 1 μA of current

Burnout detection frequency

Detected in the measurement cycle

Buffer memory

200k data

Warm up time

30 minutes or more^*5

Rating

Power consumption

1.2 W or less

Environmental resistance

Ambient temperature

0 to +40°C 32°F to 104°F

Relative humidity

10 to 85% RH (no condensation)

Weight

Approx. 230 g 8.12 oz (including approx. 100 g 3.53 oz for the OP-51582 (NR-TH08 terminal block))

^*1 The above specifications are the values when zero point adjustment is performed after the warm-up period in an environment with a temperature of 23°C ±3°C 73.4°F ±5.4°F.
^*2 Max. expansion: 576 ch (with 72 units connected, using NR-X100W), 64 ch (with 8 units connected, using NR-500)
^*3 Does not include reference junction compensation accuracy.
^*4 Specified current: 1 mA
^*5 45 minutes or more when 5 or more units are added.