Specifications | 1502A | 1504 |
| Temperature Range?/sup> | −200 癈 to 962 癈 (−328 癋 to 1764 癋) | Any thermistor range |
| Resistance Range | 0W to 400W, auto-ranging | 0W to 1 MW, auto-ranging |
| Probe | Nominal RTPW: 10W to 100W
RTD, PRT, or SPRT | Thermistors |
| Characterizations | ITS-90 subranges 4, 6, 7, 8, 9, 10, and 11
IPTS-68: R0, a, d, a4, and c4
Callendar-Van Dusen: R0, a, d, and b | Steinhart-Hart thermistor polynomial
Callendar-Van Dusen: R0, a, d, and b |
Resistance Accuracy
(ppm of reading) | 0W to 20W: 0.0005W
20W to 400W: 25 ppm | 0W to 5 KW: 0.5W
5 KW to 200 KW: 100 ppm
200 KW to 1 MW: 300 ppm |
| Temperature Accuracy?/sup> | ?.004 癈 at −100 癈
?.006 癈 at 0 癈
?.009 癈 at 100 癈
?.012 癈 at 200 癈
?.018 癈 at 400 癈
?.024 癈 at 600 癈 | ?.002 癈 at 0 癈
?.002 癈 at 25 癈
?.004 癈 at 50 癈
?.010 癈 at 75 癈
?.020 癈 at 100 癈
(Using 10 KW thermistor sensor, a=0.04. Does not include probe uncertainty or characterization errors.) |
| Operating Temperature Range | 16 癈 to 30 癈 | 13 癈 to 33 癈 |
| Resistance Resolution | 0W to 20W: 0.0001W
20W to 400W: 0.001W | 0W to 10 KW: 0.01W
10 KW to 100 KW: 0.1W
100 KW to 1 MW: 1W |
| Temperature Resolution | 0.001 癈 | 0.0001 癈 |
| Excitation Current | 0.5 and 1 mA, user selectable, 2 Hz | 2 and 10 mA, automatically selected |
| Measurement Period | 1 second |
| Digital Filter | Exponential, 0 to 60 seconds time constant (user selectable) |
| Probe Connection | 4-wire with shield, 5-pin DIN connector |
| Communications | RS-232 serial standard
IEEE-488 (GPIB) optional |
| Display | 8-digit, 7-segment, yellow-green LED; 0.5-inch-high characters |
| Power | 115 VAC (?0 %), 50/60 Hz, 1 A, nominal
230 VAC (?0 %), 50/60 Hz, 1 A, nominal, specify |
| Size (HxWxD) | 61 x 143 x 181mm (2.4 x 5.6 x 7.1 in) |
| Weight | 1.0 kg (2.2 lb.) |
| Probes from Hart | 5615, 5627, 5626, 5628, 5622 | 5640-44, 5610-65 |
| Calibration | ISO 17025-accredited calibration provided |
| ?/sup>Temperature ranges and accuracy may be limited by the sensor you use. |