User Manual

5.2 Analog Input Section
99
5.2.10 Model 8958 16-Ch Scanner Unit
Temperature and humidity
range for guaranteed
accuracy
Period of guaranteed
accuracy
23 ±5°C (73±9°F), 30 to 80% RH (When executing zero-position adjustment one hour af-
ter power on)
1 year
Guaranteed accuracy period 1 year
The number of input
channels
16 channels (Each channel can be set for voltage, or for a thermocouple)
Input terminals Screw-type terminal block (two terminals per channel)
(Recommended diameter 0.32 mm or larger, recommended wire: 0.14 to 1.5 mm
2
single-
strand or 0.14 to 1.0 mm
2
multi-strand)
Detachable terminal block, terminal cover included
Measurement Parameter Voltage, temperature (K, J, E, T, N, R, S, B, W)
Measurement ranges Voltage input: 5m, 50m, 500m, 2 [V/div]
Temperature input: 10, 50, 100 [
°C/div]
Resolution Voltage input: 1/1600 of range
Temperature input: 1/1000 of range
Measurable range Voltage input: -100%f.s. to 100%f.s. (f.s.=20div)
Temperature input: (Upper and lower limits depend on the measurement input range of
each sensor)
10
°C/div:-100 to 200°C
50
°C/div:-200 to 1000°C
100
°C/div:-200 to 2000°C
Input range of thermocouple
measurement
JIS C 1602-1995
K: -200 to 1350°C J: -200 to 1200°C
E: -200 to 1000°C T: -200 to 400°C
N: -200 to 1300°C R: 400 to 1700°C
S: 400 to 1700°C B: 400 to 1800°C
ASTM E-988-96
W(WRe5-26): 0 to 2000
°C
Measurement accuracy Voltage input: ±0.2%f.s.
Temperature input: K, J, E, T, N: ±0.05%f.s.±1
°C
R, S, B, W: ±0.05%f.s.±3.5
°C (less than 400°C)
±0.05%f.s.±2
°C (400°C or more)
Reference junction
compensation
(Temperature input) Selectable internal or external
Reference junction
compensation accuracy
(Temperature input) ±1°C (with internal reference contact compensation and input termi-
nal in state of temperature equilibrium)
Disconnect (Burn-Out)
detection
(Temperature input) selectable ON or OFF
Temperature characteristic To the measurement accuracy add (measurement accuracy × 0.15) per ºC
Digital filter OFF/ 50Hz/ 60Hz/ 10Hz
Data refresh rate 50 ms (with digital filter: OFF)
300 ms (with digital filter: 50/60Hz)
1.4 s (with digital filter:10Hz)
Normal mode rejection ratio 50dB min.
When the 50-Hz digital filter is enabled with 50-Hz input
When the 60-Hz digital filter is enabled with 60-Hz input
When the 10-Hz digital filter is enabled with 10-Hz input
Common mode rejection
ratio
100 dB min.
(at 50/60 Hz, digital filter OFF with signal source resistance 100 Ω max.)
140dB min.
(at 50 Hz, digital filter 50Hz with signal source resistance 100 Ω max.)
(at 60 Hz, digital filter 60Hz with signal source resistance 100 Ω max.)