Keithley TEC SourceMeter 2510, Руководство по обслуживанию, Страница: 93 / 120

A-2 Specifications Models 2510 and 2510-AT
HW 3/13/02
Rev. B
2510 TEC SourceMeter
THERMISTOR MEASUREMENT ACCURACY 14
Nominal
Thermistor
Accuracy vs. Temperature
Resistance 0°C 25°C 50°C 100°C
100
Ω
0.021°C 0.035°C 0.070°C 0.27°C
1 k
Ω
0.015°C 0.023°C 0.045°C 0.18°C
10 k
Ω
0.006°C 0.012°C 0.026°C 0.15°C
100 k
Ω
0.009°C 0.014°C 0.026°C 0.13°C
OPEN/SHORTED ELEMENT DETECTION
SOFTWARE LINEARIZATION FOR THERMISTOR AND RTD
COMMON MODE VOLTAGE: 30VDC.
COMMON MODE ISOLATION : >10 9
Ω
, <1000pF
MAX. VOLTAGE DROP IN INPUT FORCE LEADS: 1 volt.
MAX. SENSE LEAD RESISTANCE: 100
Ω
for rated accuracy.
SENSE INPUT IMPEDANCE: > 1·10 8
Ω
.
GENERAL
NOISE REJECTION:
SPEED
NPLC CMRR 12
Normal 1.00 90 dB
SOURCE OUTPUT MODES: Fixed DC level.
PROGRAMMABILITY: IEEE-488 (SCPI-1995.0), RS-232, 3 user-definable power-up states plus
factory default and *RST.
POWER SUPPLY: Nominal 100 to 240VAC rms, 50–60Hz, 90VA.
WARRANTY: 1 year.
EMC: Conforms to European Union Directive 89/336/EEC, EN 61326-1.
SAFETY: Conforms to European Union Directive 73/23/EEC, EN 61010-1.
VIBRATION: MIL-PRF-28800F Class 3 Random Vibration.
WARM-UP: 1 hour to rated accuracies.
DIMENSIONS, WEIGHT: 89mm high
×
213 mm wide
×
370mm deep (3 1 ⁄
2
in
×
8 3 ⁄
8
in
×
14 9 ⁄
16
in).
Bench configuration (with handle & feet): 104mm high
×
238mm wide
×
370mm deep (4 1 ⁄
8
in
×
9 3 ⁄
8
in
×
14 9 ⁄
16
in). Net Weight: 3.8kg (8.38 lbs).
ENVIRONMENT: Operating: 0°–50°C, 70% R.H. up to 35°C. Derate 3% R.H./°C, 35°–50°C.
Storage: –25° to 65°C
The Model 2510 Thermoelectric Cooler Controller is designed to:
• control the power to the TEC to maintain a constant temperature,
current, voltage, or thermistor resistance
• measure the resistance of the TEC
• software PID loop
TEC OUTPUT SPECIFICATIONS
OUTPUT RANGE: ±10 VDC at up to ±5 ADC.
OUTPUT RIPPLE: <5mV rms. 5
AC RESISTANCE EXCITATION: ±(9.6mA + 190μA). 10, 11
TEC MEASUREMENT SPECIFICATIONS
FUNCTION 1 Year, 23°C ±5°C
Operating
Resistance
1, 6, 7, 8 ±(2.0% of rdg + 0.1
Ω
)
Operating Voltage 1, 6 ±(0.1% of rdg + 4mV)
Operating Current 6 ±(0.4% of rdg + 8mA)
AC Resistance 1, 13 ±(0.10% of rdg + 0.02
Ω
)
OPEN SHORTED THERMOELECTRIC DETECTION
LOAD IMPEDANCE: Stable into 1μF typical.
COMMON MODE VOLTAGE: 30VDC maximum.
COMMON MODE ISOLATION: >10 9
Ω
, <1500pF.
MAX. SENSE LEAD RESISTANCE: 1
Ω
for rated accuracy.
MAX. FORCE LEAD RESISTANCE: 0.1
Ω
.
THERMAL FEEDBACK ELEMENT SPECIFICATIONS (1 Year, 23°C ±5°C)
Sensor Type RTD Thermistor Solid State
Current Voltage
100
Ω
1 k
Ω
100
Ω
1 k
Ω
10 k
Ω
100 k
Ω
Output (I
SS
) Output (V
SS
)
Excitation 9 2.50 mA 833 μA 2.5 mA 833 μA 100 μA 33 μA 2.5 mA +13.5 V
Compliance 833 μA max 15.75 V max
Nominal Resistance Range 0–250
Ω
0-2.50 k
Ω
0–1 k
Ω
0–10 k
Ω
0–80 k
Ω
0–200 k
Ω
Excitation Accuracy -2.9% -2.9% ±2.9% ±2.9% ±2.9% ±2.9% ±12% ±2.9%
Nominal Sensor
Temperature Range
–50° to +250°C –50° to +250°C –50° to +250°C –50° to +250°C –50° to +250°C –50° to +250°C –40° to +100°C –40° to +100°C
Sensor Coefficients
α, β, δ α, β, δ
A, B, C A, B, C A, B, C A, B, C Slope & offset Slope & offset
Measurement Accuracy
±(% rdg + offset)
0.04 + 0.07
Ω
0.04 + 0.4
Ω
0.04 + 0.07
Ω
1 0.04 + 0.4
Ω
1 0.02 + 3
Ω
1 0.04 + 21
Ω
0.03 + 100 nA 0.03 + 500 μV
CONTROL SYSTEM SPECIFICATIONS
SET: Constant Peltier Temperature
Constant Peltier Voltage
Constant Peltier Current
Constant Thermistor Resistance
CONTROL METHOD:
Programmable software PID loop.
Proportional, Integral, and Derivative gains independently program-
mable.
SETPOINT SHORT TERM STABILITY: ±0.005°C rms. 2, 3
SETPOINT LONG TERM STABILITY: ±0.01°C. 2, 4
SETPOINT RANGE: –50°C to 225°C.
OVER TEMPERATURE LIMIT: 250°C max.
UNDER TEMPERATURE LIMIT: –50°C max.
SETPOINT RESOLUTION: 0.001°C, 1mV, 100μA, 0.01% of nominal (25°C)
thermistor resistance.
HARDWARE CURRENT LIMIT: 1.0A to 5.25A ±5%.
SOFTWARE VOLTAGE LIMIT: ±0.5 to 10.5V ±5%.
NOTES
1 With remote voltage sense.
2 With 10k
Ω
thermistor as sensor.
3 Short term stability is defined as
24 hours with Peltier and Model
2510 at 25°C ±0.5°C.
4 Long term stability is defined as
30 days with Peltier and Model
2510 at 25°C ±0.5°C.
5 10Hz to 10MHz measured at 5A
output into a 2
Ω
load.
6 Common mode voltage = 0V
(meter connect enabled, connects
Peltier low output to thermistor
measure circuit ground). ±(0.1%
of rdg + 0.1
Ω
) with meter connect
disabled.
7 Resistance range 0
Ω
to 20
Ω
for
rated accuracy.
8 Current through Peltier > 0.2A.
9 Default values shown, selectable
values of 3μA, 10μA, 33μA, 100μA,
833μA, 2.5mA. Note that tempera-
ture control performance will
degrade at lower currents.
10 AC Ohms is a dual pulsed meas-
urement using current reversals
available over bus only.
11 @23°C ±5°C.
12 For 1k
Ω
unbalance in LO lead.
Minimum amplifier specification.
13 Resistance range 0
Ω
to 100
Ω
for
rated accuracy.
14 Accuracy figures represent the
uncertainty that the Model 2510
may add to the temperature
measurement, not including ther-
mistor uncertainty. These accura-
cy figures are for thermistors with
typical A, B, C constants.
2510-902-01 (E - Mar 2010)(Service).book Page 2 Tuesday, March 16, 2010 2:33 PM