701261 Temperature & Universal Voltage Module
701261 Universal Module (2 ch)
Thermocouple (K, E, J, T, L, U, N, R, S, B, W, iron-doped gold/chromel)
How To Check Input Voltage
Standard operating conditions: After a 30-minute warm-up and after calibration; Temp- 23 degrees C +/- 5 degrees C; Humidity- 55% =/-10% RH
Vertical resolution (voltage measurement) during voltage input: 2400 LSB/range; Input connector: Binding post; Effective measurement range: Twice of setting range
Voltage and temperature formula: Temperature coefficient- [Voltage Measurement] Zero point +/-(0.01% of range)/degrees C (typical); Gain +/-(0.02% of range)/degrees C (typical)
| Item | Specifications | |||||||||||||||||||||||||||||||||||||||||||||
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| Standard operating conditions | Temperature: 23 ±5 °C Humidity: 20 to 80 % RH After a 30 minute warm-up and after calibration |
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| Function | Temperature (thermocouple) or voltage measurement (switchable) | |||||||||||||||||||||||||||||||||||||||||||||
| Effective measurement range | [Voltage measurement] 20 div (display range: 10 div) | |||||||||||||||||||||||||||||||||||||||||||||
| Number of input channels | 2 | |||||||||||||||||||||||||||||||||||||||||||||
| Input coupling settings | TC, DC, AC, GND TC: Temperature (thermocouple) measurement DC: Voltage measurement (DC coupling) AC: Voltage measurement (AC coupling) |
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| When measuring voltage – maximum sampling rate | 100 kS/s | |||||||||||||||||||||||||||||||||||||||||||||
| Temperature measurement data update rate | 500 Hz | |||||||||||||||||||||||||||||||||||||||||||||
| Input type | Isolated unbalanced | |||||||||||||||||||||||||||||||||||||||||||||
| Measurement range/accuracy1 | [Voltage measurement] Voltage scale: 5 mV/div to 20 V/div (1-2-5 steps); Voltage accuracy: ±(0.25 % of 10 div) [Temperature measurement]2 Thermocouple standards: K, E, J, T, N, R, S, B: IEC 60584-1, DIN IEC 60584-1, JIS C1602; W: W-5 %Re/W-26 %Re (Hoskins Mfg. Co.), ASTM E988; L: Fe-CuNi, DIN43710; U: Cu-CuNi, DIN43710
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| Frequency characteristics1 (−3 dB point when a sine wave of amplitude ±3 div is applied) | [Voltage measurement] DC to 40 kHz [Temperature measurement] DC to 100 Hz |
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| Maximum input voltage4 (at a frequency of 1 kHz or less) | Both temperature and voltage input: 42 V (DC+ACpeak) (as a value that meets the safety standard) 150 V (DC+ACpeak) (maximum allowable voltage, as a value that does not damage the instrument when applied) |
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| Maximum rated voltage to ground5 – between input and case and between inputs (at a frequency of 1 kHz or less) | Both temperature and voltage input: 42 V (DC+ACpeak) (CAT II, 30 Vrms) | |||||||||||||||||||||||||||||||||||||||||||||
| Vertical resolution | [Voltage measurement] During voltage input: 2400 LSB/div [Temperature measurement] When measuring temperature: 0.1 °C |
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| −3 dB point when AC coupled | [Voltage measurement] 0.5 Hz or less | |||||||||||||||||||||||||||||||||||||||||||||
| Input connector | Binding post | |||||||||||||||||||||||||||||||||||||||||||||
| Input impedance | Approx. 1 MΩ | |||||||||||||||||||||||||||||||||||||||||||||
| Common mode rejection ratio | [Voltage measurement] 80 dB or more (50/60 Hz) (typical value6) [Temperature measurement] 120 dB or more (50/60 Hz, with 2-Hz filter ON, signal source resistance of 500 Ω or less) (typical value6) |
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| Residual noise level (input section shorted) | [Voltage measurement] ±100 µV or ±0.01 div whichever is greater (typical value6) | |||||||||||||||||||||||||||||||||||||||||||||
| A/D converter resolution | [Voltage measurement] 16 bits (2400 LSB/div) | |||||||||||||||||||||||||||||||||||||||||||||
| Temperature coefficient | [Voltage measurement] Zero point: ±(0.01 % of 10 div)/°C (typical value6) Gain: ±0.02%/°C (typical value6) |
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| Reference junction compensation accuracy (when the input terminal temperature is balanced) | K, E, J, T, L, U, N: ±1 °C R, S, B, W: ±1.5 °C Au7Fe: ±1 K |
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| Bandwidth limit | [Temperature measurement] (Digital filter + analog filter): Select from Full, 30 Hz, 8 Hz, and 2 Hz + 150 Hz secondary analog filter [Voltage measurement] Select from Full, AUTO, 4 kHz, 400 Hz, 40 Hz Cutoff characteristics: −12 dB/OCT (typical value,6 setting other than AUTO) Cutoff frequency (fc) when set to AUTO (701262 only)
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| Table of cutoff frequency characteristics of the anti-aliasing filter (AAF) | When the filter is set to Auto, the anti-aliasing filter and low-pass filter are automatically set according to the sample rate.
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| Wiring / measurement points |
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1. Value measured under standard operating conditions.
2. Does not include the reference junction temperature compensation accuracy.
3. This module supports Au7Fe with 0.07 % metal content with respect to gold.
6. Typical values represent typical or average values. They are not strictly warranted.
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