U8551 Universal Unit
1.
General specifications
Compatible logger
LR8450/LR8450-01 Memory HiLogger
Operating
Indoors, Pollution Degree 2, altitude up to 2000 m (6562 ft.)
environment
Operating temperature
−10°C to 50°C (14°F to 122°F), 80% RH or less (non-condensing)
and humidity range
Storage temperature
−20°C to 60°C (−4°F to 140°F), 80% RH or less (non-condensing)
and humidity range
Standards
Safety: EN 61010
EMC: EN 61326, Class A
Standard compliance
Thermocouples: JIS C1602:2015, IEC 60584-1:2013
Resistance temperature detector (Pt100, Pt1000): JIS C1604:2013, IEC 60751:2008
Resistance temperature detector (JPt100): JIS C1604:1989
Vibration resistance
JIS D 1601:1995 5.3 (1)
Class 1: Passenger vehicles; conditions: Class A equivalent
(4 h along X-axis and 2 h along Y- and Z-axes at a vibration acceleration of 45 m/s
[4.6 G])
Dimensions
Approx. 134W × 70H × 63D mm (5.28"W × 2.76"H × 2.48"D) (including cover)
Mass
Approx. 318 g (11.2 oz.)
Product warranty
3 years
period
Accessories
Instruction Manual
Installation screws × 2
Options
Z2000 Humidity Sensor
2.
Input, output, and measurement specifications
-1. Basic specifications
Number of input
15 (Set voltage, thermocouple, humidity, resistance temperature detector, or resistor for
channels
each channel.)
Input terminals
Push-button type terminal block (4 terminals per channel), outfitted with terminal block
cover
Measurement target
Voltage
Thermocouples (K, J, E, T, N, R, S, B, C)
Humidity (using the Z2000 Humidity Sensor)
Resistance temperature detector (Pt100, Jpt100, Pt1000)
Resistor (connection: 4-wire; measurement current: 1 mA ±5%)
Input type
Scanning by semiconductor relays, floating unbalanced input
All channels isolated (The SoL terminals used to connect resistance temperature
detectors and resistors are not isolated as they are shorted for all channels internally.)
A/D resolution
16 bits
Maximum input
±100 V DC
voltage
Maximum channel-to-
300 V DC (The SoL terminals used to connect resistance temperature detectors and
channel voltage
resistors are not isolated as they are shorted for all channels internally.)
(Connection: 3-wire/4-wire)
(Measurement current: 1 mA ±5% [Pt100 and Jpt100 measurement];
0.1 mA ±5% [Pt1000 measurement])
(During Pt1000 measurement, setting available when the data refresh interval is
greater than 100 ms.)
HIOKI LR8450A964-02
Plug-in Module Specifications
2
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