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Laureate™ Load Cell & Microvolt
Digital Panel Meter
20 mV - 500 mV full-scale ranges, 4- or 6-wire connection
Key Features
- 20, 50, 100, 250 & 500 mV ranges
- 5-digit resolution with span from 0 to ±99,999
- Zero from -99,999 to +99,999
- Selectable fixed right-hand zero with rounding
- Isolated 10 Vdc supply to power up to four 350-ohm load cells in parallel
- 4- or 6-wire hookup to avoid lead resistance effects
DC Microvoltmeter Inputs
| Input Range mV |
Resolution |
Input Resistance |
Error at 25°C |
±20.000
±50.000
±100.00
±250.00
±500.00 |
1 µV
1 µV
10 µV
10 µV
10 µV
|
1 GΩ |
0.01% FS
± 2 counts |
Load Cell Inputs
| Full-Scale Input, mV |
Zero Adjust |
Span Adjust |
Input Resistance |
Error at 25°C |
±20.000
±50.000
±100.00
±250.00
±500.00
|
-99,999
to
+99,999
|
0 to
±99,999
|
1 GΩ |
0.01% FS
± 2 counts |
DC Microvolts & Load Cell
| Accuracy |
Error at 25°C
Span Tempco
Zero Tempco
Load Cell Linearization |
0.01% FS ± 2 counts
0.0015% of reading/°C
0.1 µV/°C
Provided by Extended meter version |
| Noise Rejection |
CMR, DC to 60 Hz
NMR at 50/60 Hz |
130 dB
90 dB with min filtering |
| A-to-D Conversion |
Technique
A-to-D Rate
Output Update
Display Update |
Concurrent Slope™ (Pat 5,262,780)
60/s at 60 Hz, 50/s at 50 Hz
56/s at 60 Hz, 47/s at 50 Hz
3.5/s at 60 Hz, 3/s at 50 Hz |
| Display |
Readout
Range
Indicators |
5 LED digits, 7-segment, 14.2 mm (.56"), red or green.
-99999 to 99999 or -99990 to 99990 (count by 10)
Minus sign, 2 red LED lamps |
| Power |
Voltage, standard
Voltage, optional
Frequency
Power Isolation |
85-264 Vac or 90-300 Vdc (DC operation not UL approved)
12-32 Vac or 10-48 Vdc
DC or 47-63 Hz
250V rms working, 2.3 kV rms per 1 min test |
| Excitation Output (standard) |
5 Vdc
10 Vdc
24 Vdc
Output Isolation |
5 Vdc ±5%, 100 mA
10 Vdc ±5%, 120 mA
24 Vdc ±5%, 50 mA
50 Vdc to meter ground |
| Analog Output (optional) |
Output Levels
Current compliance
Voltage compliance
Scaling
Resolution
Isolation |
4-20 mA, 0-20 mA, 0-10V, -10 to +10V (jumper selectable)
2 mA at 10V ( > 5 kOhm load)
12V at 20 mA ( < 600 Ohm load)
Zero and full scale adjustable from -99999 to +99999
16 bits (0.0015% of full scale)
250V rms working, 2.3 kV rms per 1 min test |
| Relay Outputs (optional) |
Relay Types
Current Ratings
Output common
Isolation |
2 Form C contact relays or 4 Form A contact relays (NO),
2 or 4 Form A, AC/DC solid state relays (NO)
8A at 250 Vac or 24 Vdc for contact relays
130 mA at 140 Vac or 180 Vdc for solid state relays
Isolated commons for dual relays or each pair of quad relays
250V rms working, 2.3 kV rms per 1 min test |
| Serial Data I/O (optional) |
Board Selections
Protocols
Data Rates
Digital Addresses
Isolation |
Ethernet, Ethernet-to-RS485 server, USB, USB-to-RS485 server,
RS485 (dual RJ11), RS485 Modbus (dual RJ45), RS232.
Modbus RTU, Modbus ASCII, Laurel ASCII protocol
300 to 19200 baud
247 (Modbus), 31 (Laurel ASCII),
250V rms working, 2.3 kV rms per 1 min test |
| Signal Connections |
 |
| Environmental |
Operating Temp.
Storage Temp.
Relative Humidity
Protection |
0°C to 60°C
-40°C to 85°C
95% at 40°C, non-condensing
NEMA-4X (IP-65) when panel mounted |
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