Laurel Electronics LTM DPM SERIES ANALOG INPUT, SERIAL DATA OUTPUT - Manual (Page 38)

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Load Cell & Microvolt Input
Range Input Resistance Input Error
±20.000 mV
±50.000 mV
±100.00 mV
±250.00 mV
±500.00 mV
1 GΩ
0.01% of FS
±2 counts
Max applied voltage ..............................................................................................................100 V
RTD Input (1°, 0.1° or 0.01° resolution)
Type Excitation Range Conformity Error
Platinum, Pt100
=.00385 (DIN)
256 µA
-202 to 850°C
-331 to 1562°F
0.03°C
0.05°F
Platinum, Pt100
=.003925 (ANSI)
256 µA
-202 to 631°C
-331 to 1168°F
0.04°C
0.07°F
Nickel, Ni120
=.00672
256 µA
-80°C to +260°C
-112°F to +500°F
±0.05°C
±0.09°F
Copper, Cu10
=.00427
5.0 mA
-97°C to +260°C
-143°F to +500°F
±0.05°C
±0.09°F
RTD connection: ......................................................................................................2, 3 or 4 wire
Span tempco.............................................................................................. ±0.003% of reading/ºC
Zero tempco ........................................................................................................... ±0.03 deg/deg
Sensor lead resistance tempco per conductor, 2-wire....................10 mdeg / Ω / deg up to 10 Ω
Sensor lead resistance tempco per conductor, 3 & 4-wire ...........10 mdeg / Ω / deg up to 100 Ω
Over-voltage protection .................................................................................................... 125 Vac
Open sensor indication ..............................................0 mA or > 20 mA output, jumper selectable
Thermocouple Input (1° or 0.1° resolution)
Selection of signal ranges & temperature sensors ................................Via jumpers and software
Selection of serial format, excitation output, analog output................ Via jumpers on main board
Programming........................................ Via PC using Instrument Setup software and serial cable
Input resistance .................................................................................................................... 1 GΩ
Input current.......................................................................................................................100 pA
Overall input accuracy .................................................................. ±
0.01% of full span ±2 counts
Max lead resistance ..........................................................................1 kΩ max for rated accuracy
Span tempco.............................................................................................. ±0.003% of reading/ºC
Reference junction tempco ..................................................................................... ±0.02 deg/deg