MODEL: 73VR21

73VR21 SPECIFICATIONS

ES-7395 Rev.29 Page 5/18

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

INPUT TYPE, RANGE, ACCURACY & TEMPERATURE COEFFICIENT

* Accuracy: Applicable with the common mode voltage 0V be-

tween C terminals of all channels and between C terminal

of each channel and FG terminal.

The effects by the following factors are excluded: Fast A/D

conversion mode; temperature drift with the REM3 directly

mounted to the I/O terminals; wire resistance; burnout sens-

ing current with upscale/downscale settings.

With 100 msec. storing rate, measured value may be sus-

ceptible to inaccuracies due to the fast update cycle. If this

is the case, please choose 500 msec. or slower rate.

Table 1. DC Voltage Input

INPUT RANGE

ACCURACY (mV)

±60 mV

±125 mV

±250 mV

±0.05

±0.07

±0.13

±500 mV

±1000 mV

±0.3

±0.5

±3 V

±6 V

±12 V

±3

±5

±10

Table 2-1. Thermocouple Input, Celsius

T/C

USABLE

RABGE (°C)

CONFORMANCE

RANGE (°C)

ACCURACY

(°C)

(PR)

K (CA)

E (CRC)

0 to 1770

-270 to +1370

-270 to +1000

400 to 1770

0 to 1370

0 to 1000

±4.6

±1.5

±0.8

J (IC)

T (CC)

B (RH)

-210 to +1200

-270 to +400

100 to 1820

0 to 1200

0 to 400

700 to 1820

±1.0

±1.3

±7.2

R

S

C (WRe 5-26)

-50 to +1760

-50 to +1760

0 to 2320

400 to 1760

400 to 1760

0 to 2320

±4.8

±5.3

±4.9

N

U

L

P (Platinal II)

-270 to +1300

-200 to +600

-200 to +900

0 to 1395

0 to 1300

0 to 600

0 to 900

0 to 1395

±1.9

±1.3

±1.0

±1.7

Note 1: Measuring accuracy at 50 μV emf.

Note 2: CJC error is not included.

Table 2-2. Thermocouple Input, Fahrenheit

T/C

USABLE

RABGE (°F)

CONFORMANCE

RANGE (°F)

ACCURACY

(°F)

(PR)

K (CA)

E (CRC)

32 to 3218

-454 to +2498

-454 to +1832

752 to 3218

32 to 2498

32 to 1832

±8.3

±2.7

±1.5

J (IC)

T (CC)

B (RH)

-346 to +2192

-454 to +752

212 to 3308

32 to 2192

32 to 752

1292 to 3308

±1.8

±2.4

±13.0

R

S

C (WRe 5-26)

-58 to +3200

-58 to +3200

32 to 4208

752 to 3200

752 to 3200

32 to 4208

±8.7

±9.6

±8.9

N

U

L

P (Platinal II)

-454 to +2372

-328 to +1112

-328 to +1652

32 to 2543

32 to 2372

32 to 1112

32 to 1652

32 to 2543

±3.5

±2.4

±1.8

±3.1

Table 3-1. RTD Input, Celsius

RTD

USABLE RANGE (°C)

ACCURACY

at < 0°C

at ≥ 0°C

Pt 100 (JIS ’97, IEC)

-200 to +850

±0.4°C

±[0.4°C + Measured Value × 0.1%]

(±1.3°C at 850°C)

Pt 200

-200 to +850

±0.3°C

±[0.3°C + Measured Value × 0.17%]

(±1.8°C at 850°C)

Pt 300

-200 to +850

±[0.4°C + Measured Value × 0.08%]

(±0.3°C at -200°C)

±[0.4°C + Measured Value × 0.21%]

(±2.2°C at 850°C)

Pt 400

-200 to +850

±[0.4°C + Measured Value × 0.11%]

(±0.2°C at -200°C)

±[0.4°C + Measured Value × 0.21%]

(±2.2°C at 850°C)

Pt 500

-200 to +850

±[0.4°C + Measured Value × 0.13%]

(±0.2°C at -200°C)

±[0.4°C + Measured Value × 0.26%]

(±2.6°C at 850°C)

Pt 1000

-200 to +850

±[0.4°C + Measured Value × 0.15%]

(±0.1°C at -200°C)

±[0.4°C + Measured Value × 0.4%]

(±3.8°C at 850°C)

Pt 100 (JIS ’89)

-200 to +660

±0.4°C

±[0.4°C + Measured Value × 0.1%]

(±1.1°C at 660°C)

JPt 100 (JIS ’89)

-200 to +510

±0.4°C

±[0.4°C + Measured Value × 0.1%]

(±1.0°C at 510°C)

Pt 50 Ω (JIS ’81)

-200 to +649

±0.5°C at < 160°C, ±[0.4°C + Measured Value × 0.1%] at ≥ 160°C (±1.1°C at 649°C)

Ni 100

-80 to +260

±0.3°C

Ni 120

-80 to +260

±0.3°C

Ni 508.4 Ω

-50 to +280

±[0.25°C + Measured Value × 0.06%] (±0.3°C at -50°C, ±0.5°C at 280°C)

Ni-Fe 604

-200 to +200

±0.9°C at -200°C, ±0.6°C at -150°C, ±0.5°C at ±100°C, ±0.7°C at 200°C

Cu 10 @ 25°C

-50 to +250

±1.2°C

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.