MODEL: 73VR21

73VR21 SPECIFICATIONS

ES-7395 Rev.29 Page 6/18

https://www.m-system.co.jp/

Table 3-1. RTD Input, Fahrenheit

RTD

USABLE RANGE (°F)

ACCURACY

at < 32°F

at ≥ 32°F

Pt 100 (JIS ’97, IEC)

-328 to +1562

±0.8°F

±[0.72°F + Measured Value × 0.1%]

(±2.4°F at 1562°F)

Pt 200

-328 to +1562

±0.6°F

±[0.54°F + Measured Value × 0.17%]

(±3.3°F at 1562°F)

Pt 300

-328 to +1562

±[0.72°F + Measured Value × 0.08%]

(±0.5°F at -328°F)

±[0.72°F + Measured Value × 0.21%]

(±4.0°F at 1562°F)

Pt 400

-328 to +1562

±[0.72°F + Measured Value × 0.11%]

(±0.4°F at -328°F)

±[0.72°F + Measured Value × 0.21%]

(±4.0°F at 1562°F)

Pt 500

-328 to +1562

±[0.72°F + Measured Value × 0.13%]

(±0.3°F at -328°F)

±[0.72°F + Measured Value × 0.26%]

(±4.7°F at 1562°F)

Pt 1000

-328 to +1562

±[0.72°F + Measured Value × 0.15%]

(±0.2°F at -328°F)

±[0.72°F + Measured Value × 0.4%]

(±6.9°F at 1562°F)

Pt 100 (JIS ’89)

-328 to +1220

±0.8°F

±[0.72°F + Measured Value × 0.1%]

(±2.0°F at 1220°F)

JPt 100 (JIS ’89)

-328 to +950

±0.8°F

±[0.72°F + Measured Value × 0.1%]

(±1.7°F at 950°F)

Pt 50 Ω (JIS ’81)

-328 to +1200

±0.9°F at < 320°F, ±[0.72°F + Measured Value × 0.1%] at ≥ 320°F (±1.9°F at 1200°F)

Ni 100

-112 to +500

±0.6°F

Ni 120

-112 to +500

±0.6°F

Ni 508.4 Ω

-58 to +536

±[0.45°F + Measured Value × 0.06%] (±0.4°F at -58°F, ±0.8°F at 536°F)

Ni-Fe 604

-328 to +392

±1.7°F at -328°F, ±1.1°F at -238°F, ±0.9°F at ±212°F, ±1.3°F at 392°F

Cu 10 @ 25°C

-58 to +482

±2.2°F

Note 1: The lower the temperature range, the better the accuracy is for Pt 300, Pt 400, Pt 500, Pt 1000 and Ni 508.4 Ω.

‘Measured Value’ in the equations is not an absolute value. Include the minus sign when calculating accuracies.

Table 4. Temperature Coefficient

INPUT TYPE

TEMPERATURE COEFFICIENT

DC Voltage

±[Nominal Input Range × 0.015%]/°C or ±[Nominal Input Range × 0.008%]/°F

(e.g. ±0.018mV/°C with ±60mV range)

Thermocouple

±[Accuracy / 3] °C/°C or ±[Accuracy / 3] °F/°F (e.g. ±0.27°C/°C with E thermocouple)

RTD

at < 0°C or 32°F

at ≥ 0°C or 32°F

Pt 100 (JIS ’97, IEC) ±0.041°C/°C

±0.041°F/°F

±[0.041°C + Measured Value × 0.026%]/°C

±[0.041°F + Measured Value × 0.026%]/°F

Pt 200

±0.044°C/°C

±0.044°F/°F

±[0.044°C + Measured Value × 0.033%]/°C

±[0.044°F + Measured Value × 0.033%]/°F

Pt 300

±0.047°C/°C

±0.047°F/°F

±[0.047°C + Measured Value × 0.04%]/°C

±[0.047°F + Measured Value × 0.04%]/°F

Pt 400

±0.05°C/°C

±0.05°F/°F

±[0.05°C + Measured Value × 0.052%]/°C

±[0.05°F + Measured Value × 0.052%]/°F

Pt 500

±0.053°C/°C

±0.053°F/°F

±[0.053°C + Measured Value × 0.053%]/°C

±[0.053°F + Measured Value × 0.053%]/°F

Pt 1000

±[0.068°C + Measured Value × 0.025%]/°C

±[0.068°F + Measured Value × 0.025%]/°F

±[0.068°C + Measured Value × 0.087%]/°C

±[0.068°F + Measured Value × 0.087%]/°F

Pt 100 (JIS ’89)

±0.041°C/°C

±0.041°F/°F

±[0.041°C + Measured Value × 0.024%]/°C

±[0.041°F + Measured Value × 0.024%]/°F

JPt 100 (JIS ’89)

±0.041°C/°C

±0.041°F/°F

±[0.041°C + Measured Value × 0.023%]/°C

±[0.041°F + Measured Value × 0.023%]/°F

Pt 50 Ω (JIS ’81)

±0.039°C/°C

±0.039°F/°F

±[0.039°C + Measured Value × 0.021%]/°C

±[0.039°F + Measured Value × 0.021%]/°F

Ni 100

±0.028°C/°C

±0.028°F/°F

±[0.028°C + Measured Value × 0.01%]/°C

±[0.028°F + Measured Value × 0.01%]/°F

Ni 120

±0.028°C/°C

±0.028°F/°F

±[0.028°C + Measured Value × 0.01%]/°C

±[0.028°F + Measured Value × 0.01%]/°F

Ni 508.4 Ω

±0.046°C/°C

±0.046°F/°F

±[0.046°C + Measured Value × 0.018%]/°C

±[0.046°F + Measured Value × 0.018%]/°F

Ni-Fe 604

±0.058°C/°C at ≤-200°C, ±0.043°C/°C at -150°C, ±0.04°C/°C at -100°C, ±[0.047°C + Measured Value × 0.023%]/°C at ≥0°C

±0.058°F/°F at ≤-328°F, ±0.043°F/°F at -238°F, ±0.04°F/°F at -148°F, ±[0.047°F + Measured Value × 0.023%]/°F at ≥32°F

Cu 10 @ 25°C

±0.07°C/°C or ±0.07°F/°F