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3 Specifications and Environmental
Conditions
3.1 Specifications
Resistance Range
0
Ω
to 400
Ω
, auto-ranging
Resistance Accuracy, one year
1
0
Ω
to 20
Ω
: 0.0005
Ω
20
Ω
to 400
Ω
: 0.0025% (25 ppm) of reading
Resistance Accuracy, short
term
1, 2
0
Ω
to 30
Ω
: 0.0005
Ω
30
Ω
to 400
Ω
: 0.0015% (15 ppm) of reading
Temperature Range
3
–200°C to 962°C (–328°F to 1764°F)
Temperature Accuracy
1, 3, 4
–100°C: 0.004°C
0°C: 0.006°C
100°C: 0.009°C
200°C: 0.012°C
300°C: 0.015°C
400°C: 0.018°C
500°C: 0.021°C
600°C: 0.024°C
Temperature Coefficient of
Resistance
1
1 ppm/°C
Resistance Resolution
0
Ω
to 20
Ω
: 0.0001
Ω
20
Ω
to 400
Ω
: 0.001
Ω
Temperature Resolution
0.001°C
Probe
Nominal R(0.01°C): 25
Ω
to 100
Ω
RTD, PRT, or SPRT
Probe Connection
4-wire with shield, 5-pin DIN connector
Maximum acceptable lead
resistance
100
Ω
Probe Characterizations
ITS-90 sub-ranges 4, 6, 7, 8, 9, 10, and 11
IPTS-68: R
0
,
α
,
δ
,a
4
, and c
4
Callendar-Van Dusen: R
0
,
α, δ
, and
β
Probe Excitation Current
0.5 and 1 mA , user selectable, 2Hz
Measurement Period
1 second
Digital Filter
Exponential, 0 to 60 seconds time constant (user-selectable)
Communications
RS-232 serial standard
IEEE-488 (GPIB) optional, conforms to IEEE-488.1, capability AH1,
SH1, T6, L4, DC1
Display
8-digit, 7-segment, yellow-green LED; 0.5 inch high characters
Clock accuracy, typical
0.01%
Operating Temperature Range
Full accuracy: 16°C to 30°C
Absolute: 0°C to 55°C
AC power
115 VAC ±10%, 50/60 Hz, 10 W, nominal, 1 A maximum
230 VAC ±10%, 50/60 Hz, 10 W, 1 A, nominal (optional)
Detachable power cord
Size
5.6 inches (14.3 cm) wide x 7.1 inches (18.1 cm) deep x 2.4 inches
(6.1 cm) high
9
3 Specifications and Environmental Conditions
Specifications