Datasheet

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14
SWITCHING AND CONTROL
A GREATER MEASURE OF CONFIDENCE
3724
Dual 1×30 FET Multiplexer Card
60 differential channels, automatic CJC with 3724-ST accessory
3724 Card/3706A Multimeter
Condensed Specifications
TEMPERATURE
Displayed in °C, °F, or K. Exclusive of probe errors.
THERMOCOUPLES (accuracy based on ITS-90)
Type Range Resolution
90 Day/1 Year
23°C ± 5°
J –150 to +760°C 0.001°C 1.0°C
K –150 to +1372°C 0.001°C 1.0°C
N –100 to +1300°C 0.001°C 1.0°C
T –100 to +400°C 0.001°C 1.0°C
E –150 to +1000°C 0.001°C 1.0°C
R +400 to +1768°C 0.1°C 1.8°C
S +400 to +1768°C 0.1°C 1.8°C
B +1100 to +1820°C 0.1°C 1.8°C
DC SPECIFICATIONS
3724 CARD/3706A MULTIMETER UNCERTAINTY SPECIFICATIONS:
Function Range Notes
Voltage All Add 4.5 μV to PPM “of range”
Resistance
100 kW
Add 8 PPM to “of reading”
Resistance
1 MW
Add 80 PPM to “of reading”
Resistance
10 MW
Add 250 PPM to “of reading”
Resistance
100 MW
Add 5000 PPM to “of reading”
Resistance 2-wire
1 kW through 100 MW
Add 1.2 W (with REL) to PPM “of range” Add 64W
(without REL) to PPM “of range”
Resistance 4-wire
and Dry Circuit
1 W, 10 W, and 100 W
Ranges Not Available (maximum lead resistance
exceeded, see manual for measurement
considerations)
CONDITIONS: 1 PLC or 5 PLC.
ACCURACY: ±(ppm of reading + ppm of range) (ppm = parts per million; e.g., 10ppm = 0.001%).
GENERAL
ACTUATION TIME: <0.2ms.
TEMPERATURE ACCURACY USING AUTOMATIC CJC WITH 3724-ST ACCESSORY: 1ºC for
J, K, T, and E type (see mainframe specification for details).
RELAY TYPE: Optically isolated FET.
RELAY DRIVE SCHEME: Direct.
INTERLOCK: Backplane relays disabled when interlock connection removed.
RELAY DRIVE CURRENT: 4mA.
OPERATING ENVIRONMENT: Specified for 0ºC to 50ºC. Specified to 70% R.H. at 35ºC.
STORAGE ENVIRONMENT: –25ºC to 65ºC.
WEIGHT: 1.13 kg (2.5 lbs.).
SAFETY: Conforms to European Union Directive 73/23/EEC, EN61010-1.
EMC: Conforms to European Union Directive 2004/108/EC, EN61326-1.
TYPICAL SCANNING SPEEDS, SWITCH ONLY
1
:
Sequential scanning, single channel, immediate trigger advance: >1250 ch/s.
TYPICAL SCANNING SPEEDS, WITH MEASUREMENTS INTO MEMORY
2
:
DCV (10V range) or 2WW (1kW range): >1000 ch/s.
Thermocouple: >1000 ch/s.
3- or 4-Wire RTD: >450 ch/s.
4-Wire W (1kW range): >450 ch/s.
ACV (10V, 400Hz range): >1000 ch/s.
POWER BUDGET INFORMATION:
Quiescent Power (mW): 1150.
Channel Relay Power (mW) Each: 20.
Backplane Relay Power Consumption (mW) Each: 100.
See Chapter 8 of the Series 3700A user’s manual for more detailed information.
NOTES
1. Scanning script local to mainframe, within same bank, break before make.
2. 3706A mainframe with autorange off, limits off, dmm.autodelay=0, dmm.autozero=0, 4½ digits (NPLC=.006),
for ACV dmm.detectorbandwidth=300, for OHMs dmm.offsetcompensation=off, dmm.opendetector=off.
Scanning script local to mainframe, sequential scan within same bank (2 pole) or card (4 pole), and break
before make switching.
Model 3724 specifications Model 3724 specifications