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Ectron 1140A - Thermocouple Accuracy Tables

Ectron 1140A
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Specifications
Display LCD with adjustable contrast and backlight, which can be
turned off, on, or timed out with settings of 30 seconds,
one minute, two minutes, or five minutes.
Remote Interfaces USB included; Ethernet, GPIB, and RS-232 optional.
Other Available Options Carrying case.
Calibration kit consisting of a terminal cover, shorting bar,
low-thermal cable, calibrated Type T thermocouple, and
calibrated Type E thermocouple.
Temperature Ranges
Operating 0°C to +50°C.
Storage, without battery 20°C to +60°C.
Storage, with battery 0°C to +60°C.
Battery Recharge +5°C to +45°C.
Dimensions
Bench Mount 368 mm (14.50) wide.
381 mm (15.00) deep.
102 mm (4.00) high, including feet.
Rack Mount 482 mm (19.00) wide.
396 mm (15.60) deep.
89 mm (3.50) high, without feet.
Humidity 10% to 90% noncondensing.
Mass 4.5 kg (10 lb) without battery; 5.8 kg (13 lb) with battery.
THERMOCOUPLE-ACCURACY TABLES
The following tables are provided to easily ascertain the maximum error allowed for the
thermocouple types supported. They apply when either sourcing or measuring temperature with
thermocouple wires. A 95% confidence level (k = 2) is assumed. The errors were derived using
the RSS (root of the sum of the squares) of all the applicable sources for error. These errors
include:
1. Cold-junction compensation (if used without CJC, errors are reduced).
2. Variation of the environmental temperature by ±5°C from calibration temperature. If
a better temperature environment is maintained, errors will be reduced.
3. Noise, 1 µV peak in a “0.1 Hz to 10 Hz” bandwidth.
4. Accuracy, as listed on page 2-1 for periods of 30 days, six months, and one year.
5. Uncertainty limits (k = 2) of Ectron’s temperature measurement system, ±0.01°C.
6. Conformity, ±0.4 µV.
2-3

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