Hioki LR8450 - Plug-In Module Specifications; U8550 Voltage;Temp Unit; U8551 Universal Unit

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Plug-in Module Specications
4.2 Plug-in Module Specications
U8550 Voltage/Temp Unit
Operating
environment
Indoors, Pollution Degree 2, altitude up to 2000 m (6262 ft.)
Operating
temperature and
humidity range
−10°C to 50°C (14°F to 122°F), 80% RH or less (non-condensing)
Storage temperature
and humidity range
−20°C to 60°C (−4°F to 140°F), 80% RH or less (non-condensing)
Maximum input
voltage
±100 V DC
Maximum channel-to-
channel voltage
±300 V DC
Maximum rated
terminal-to-ground
voltage
300 V AC, DC (Measurement Category II)
Between any input channel (+, −) and the instrument (LR8450/LR8450-01) or between
any two modules
Anticipated transient overvoltage: 2500 V
U8551 Universal Unit
Operating
environment
Indoors, Pollution Degree 2, altitude up to 2000 m (6562 ft.)
Operating
temperature and
humidity range
−10°C to 50°C (14°F to 122°F), 80% RH or less (non-condensing)
Storage temperature
and humidity range
−20°C to 60°C (−4°F to 140°F), 80% RH or less (non-condensing)
Maximum input
voltage
±100 V DC
Maximum channel-to-
channel voltage
300 V DC (The SoL terminals used to measure resistance temperature detectors and
resistors are not isolated as they are shorted for all channels internally.)
Maximum rated
terminal-to-ground
voltage
300 V AC, DC (Measurement Category II)
Between any input channel (SoH, SoL, +, −) and the instrument (LR8450/LR8450-01) or
between any two modules
Anticipated transient overvoltage: 2500 V
HIOKI LR8450A963-02