and RS-485. RS-485 configuration allows operation as an individual data-col-
lection "node" within a computer-controlled network. NOTE: RS-485 conver-
sion is required at the computer's I/O port.
Logic Inputs and Outputs: TTL- and CMOS-compatible; isolated (±1500 V) from
power and communication ports. Negative-true outputs for limit monitoring
(isolated +5 V provides up to 50 mA for driving external devices directly); nega-
tive-true inputs for control of PRINT, TARE, PEAK, and UNLATCH functions.
Inputs*: Logic Volts Without Instru-
Level (Operating) ment Damage
0 0.9 V (max) –0.5 V (min)
1 2.5 V (min) 5.5 V (max)
Outputs: Logic
Level Voltage at Current
0 0.45 V (max) @ 10 mA (sink)
1 2.6 V (min) @ 0.5 mA (source
A.2 INDIVIDUAL CONDITIONER SPECIFICATIONS
A.2.a MODEL 3510 THERMOCOUPLE CONDITIONER
Transducer Types: E, J, K, R, S ,T, and B Thermocouples (see table)
Linearization: Digital look-up table, ±0.05%
Reference-Junction Compensation: At connector block, using built-in precision
thermistor
Thermocouple Break Detection: Off-scale positive or negative, user-selectable
Normal-Mode Range: ±80 mV operating, ±5 V without instrument damage
Common-Mode Range: ±40 V operating, ±50 V without instrument damage
A.2
A
3500 SERIES SPECIFICATIONS
A.2 INDIVIDUAL CONDITIONER SPECIFICATIONS: MODEL 3510
*The minimum time allowed between activation and reactivation of any logic input is 100 mil-
liseconds.
** Including ± one count of least significant digit displayed (i.e., ± 0.2 or 0.1). Can be readily
improved by control of instrument temperature, calibrating at known temperatures, etc.
TC Display Typical Maximum
Type Range Resolution Accuracy** Error**
E -130° C to +1000° C 0.1° C ±0.6° C ±0.8° C
J -130° C to +750° C 0.1° C ±0.8° C ±1.3° C
K -75° C to +1350° C 0.1° C ±1.1° C ±1.5° C
R -20° C to +1750° C 0.1° C ±1.3° C ±2.6° C
S -20° C to +1750° C 0.1° C ±1.3° C ±2.6° C
T -130° C to +400° C 0.1° C ±0.7° C ±1.1° C
B +480° C to +1820° C 0.1° C ±1.3° C ±2.6° C
E -200° F to +1800° F 0.2° F ±1.0° F ±1.4° F
J -200° F to +1400° F 0.2° F ±1.4° F ±2.2° F
K -100° F to +2500° F 0.2° F ±1.8° F ±2.6° F
R 0° F to +3200° F 0.2° F ±2.2° F ±4.6° F
S 0° F to +3200° F 0.2° F ±2.2° F ±4.6° F
T -200° F to +750° F 0.2° F ±1.2° F ±1.8° F
B +900° F to +3300° F 0.2° F ±2.2° F ±4.6° F
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