User Manual

5.2 Analog Input Section
91
5.2.4 Model 8939 Strain Unit
Temperature and humidity
range for guaranteed
accuracy
Period of guaranteed
accuracy
23 ±5°C (73±9°F), 35 to 80% RH (When executing auto-balancing one hour after power
on)
1 year
The number of input
channels
2 channels
Measurement ranges 20, 50, 100, 200, 500, 1000 με/div
DC amplitude accuracy ± (0.5%f.s. + 2 με)
Zero position accuracy ±0.5%f.s. (after auto-balancing)
Temperature characteristic Gain: ±0.05%f.s./°C
Zero position: ±2
με/°C (20,50 με/div), ±0.1%f.s./°C (other ranges)
Frequency characteristic DC to 20 kHz dB
Appropriate adapter Strain gauge adapter, Bridge resistance: 120 Ω to 1 kΩ
Bridge voltage 2 ± 0.05 V
Balancing Electronic auto-balancing
Balance adjustment range ±10000 με max
Low-pass filter OFF, 10±30%, 30±30%, 300±30%, 3k±30% (Hz) -3 dB
A/D resolution 12 bits
Maximum sampling speed 1 MS/s (sampling period: 1 μs)
Maximum input voltage 10 V (DC + AC peak)
Maximum rated voltage to
earth
30 Vrms or 60 VDC
Operational ranges for
temperature and humidity
Same as the host Memory HiCorder
Temperature and humidity
ranges for storage
-10 to 50°C (14 to 122 °F ), 80% RH or less (non-condensating)
Operating environment Same as the host Memory HiCorder
Effect of radiated radio
frequency electromagnetic
field
±5%f.s. at 3 V/m max.
Effect of conducted radio-
frequency electromagnetic
field
±5%f.s. at 3 V max (20 με/div when +/− signal lines shorted together)
Dimensions Approx. 170W x 20H x 148.5D mm (6.69”W x 0.79”H x 5.85”D )
Mass Approx. 250 g (8.8 oz.)
Accessories Conversion cable X 2 (Compatible sensor connector: PRC03-12A10-7M10.5 by TAJIMI)
Applicable Standards
Safety
EMC
EN 61010 Pollution degree 2,
Measurement category I (anticipated transient overvoltage 330 V)
EN 61326 Class A
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