2
SRL Series
2
Specifi cations
Chapter 2
SPECIFICATIONS
For convenience to the user, the pertinent specifi cations are given in an
OPERATION GUIDE
, shown in Figures
2-1 and 2-2, affi
xed to the case of the instrument.
SPECIFICATIONS
Accuracy and other specifi cations:
See Table 2-1.
Retrace:
1 Ω to 19 MΩ
: Permanent shift in resistance value
is <2 ppm for 23°C to 0°C to 23°C cycle, and 23°C
to 40°C to 23°C cycle
Calibration Report:
Initial SI traceable calibration data provided in
0.5°C in cre ments for temperature range of 18°C to
28°C as shown in Figure 2-2.
Calibration Conditions:
Three of four-wire Kelvin measurements, low
pow er, at 23°C; two wire for 1 MΩ and over.
Traceable to SI
Terminals:
Gold-plated, tellurium-copper, low-thermal-emf binding
posts on standard 3/4 inch spacing. A
GROUND
terminal
is provided on all units.
≤190 kΩ: four 5-way binding posts for 4-terminal
measurement
<190 kΩ: two 5-way binding posts
≥100 MΩ: two 5-way binding posts with
GUARD
Other available terminals:
•
DMM direct input compatibles
•
bnc, Triax, and custom connectors
Transit Case:
Optional
Model SRC-100
lightweight transit case
with handle, suitable for transporting and storing
two units. The case provides mechanical protection
and insulation from temperature chang es dur ing
trans por ta tion or shipping.
Dimensions:
8.6 cm H x 10.5 cm W x 12.7 cm D (3.4” x 4.15” x 5”)
Weight:
0.73 kg (1.6 lb)
Figure 2-1: OPERATION GUIDE affi xed to unit
Figure 2-2: Temperature Calibration Chart
JOS
19-Jun-2002
SRL-1
B2-9240246
N/A
1.000 003 3
N/A
N/A
SRL-1 STANDARD RESISTOR
±2 ppm
±3 ppm
18°C to 28°C
0.5 V
500 mA
8 ppm per year max; 2
ppm typical.
<2 ppm for for max.
temp. cycles.
-1.6E-07
-2.4E-08
19-Jun-2001
23.0°C
Adjustment to Nominal:
Max. Change from 23°C
value (18°C to 28°C):
Operating Temperature
Range:
Max. Voltage:
Max. Current:
Stability:
Retrace:
Date Calibrated
Temperature (°C)
Relative Humidity
Resistance R
Test Conditions
Meas. Uncertainty
By
Recommended Due
www.ietlabs.com
IET LABS, INC.
534 Main Street, Westbury, NY 11590
800-899-8438 • 516-334-5959
(FAX) 516-334-5988
Model:
SN:
R
t
= R
23
[1 +
α
( t - 23 ) +
β
( t - 23 )
2
];
α
=
β
=
23
JOS
19-Jun-2001
1.000 003 3
SRL-1
B2-9240246
0
-1.6E-07
-2.4E-08
3.0
2.9
2.1
1.9
2.7
2.6
2.4
2.3
3.4
3.3
3.2
3.1
3.5
3.5
3.6
3.6
3.6
3.6
3.5
1.000 002 1
1.000 003 5
1.000 003 5
1.000 003 4
1.000 003 4
3.5
3.4
1.000 001 9
1.000 003 3
1.000 003 2
1.000 003 1
1.000 003 0
1.000 002 9
1.000 002 7
1.000 002 6
1.000 002 4
1.000 002 3
1.000 003 5
1.000 003 5
1.000 003 6
1.000 003 6
1.000 003 6
1.000 003 6
28.0
26.0
26.5
27.0
27.5
24.0
24.5
25.0
25.5
22.0
22.5
23.0
23.5
20.0
20.5
21.0
21.5
18.0
18.5
19.0
19.5
Temperature Calibration Chart
Model:
SN:
Alpha:
Report No:
Beta:
Temperature
(°C)
Deviation from
Nominal
(ppm)
Measured value at 23°C:
Date:
By:
IET LABS, INC.
• (516) 334-5959
• (800) 899-8438
• 534 Main Street, Westbury, NY 11590
Traceable to NIST
Resistance
Содержание SRL Series
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