Temperature Data, H7FFF | Hitachi EH-150 instruction

7. Collection of Temperate Data

7.2 Temperature Data

(1) Content of temperature conversion data [range : -50 to +400 °C] (Pt100/ Pt1000)

The meaning of the each bit( b0 to b15) of temperature conversion data (in WX**) is as shown

below.

The sum of the bit “1” is the measured temperature.

b15	b14	b13	b12	b11	b10	b9	b8

b3 b2 b1 b0



															(°C)
-800			200		50		12.5		3.125	0.781	0.195		0.0488		(°C)
-800			200		50		12.5		3.125	0.781	0.195		0.0488

		400		100		25		6.25	1.563	0.391		0.0977		0.0244
	<For example>													Note)
	<For example>

(1)HF800 =“1111 1000 0000 0000" (HF) (H8) (H0) (H0)

-800 + 400 + 200 + 100 + 50 = -50 °C

(2) H0600 =“0000 0110 0000 0000"

(H0) (H6) (H0) (H0)

25 + 12.5 = 37.5 °C

When an input error occurs( below -51°C and over 410 °C), the temperature conversion data is

H7FFF.

The following relation exits between temperature conversion data and actual temperature.

Temperature (℃) = Temperature conversion data(signed decimal data) 40.96

Note) “b0” is always “0” in normal time.

Relation between the temperature and temperature conversion data

ａ)Temperature conversion data(hexadecimal) -50 to +400 °C

H4000

H3000

H2000

H1000

H0800

-50

						Temperate(°C)
0	50	100	200	300	400

HF800

Figure 7.3

7-2

EH-150 specifications

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Hitachi EH-150 manual Temperature Data, H7FFF

Models: EH-150

7.2 Temperature Data

H7FFF.

EH-150 specifications