Honeywell W7761A specifications Fig. E-6. Graph of Sensor Current versus Enthalpy volts

EXCEL 10 W7761A INPUT/OUTPUT DEVICE

Fig. E-6. Graph of Sensor Current versus Enthalpy (volts).

See Fig. E-7 for a partial psychometric chart for the a C7400A Solid State Enthalpy Sensor.

85	90	95	100	105	110
(29)	(32)	(35)	(38)	(41)	(43)

CONTROL

CURVE

A

B

C

D

18 16 14 12

CONTROL POINT
APPROX. °F (°C)
AT 50% RH
73 (23)						40
70 (21)					AIR
67 (19)						38
63 (17)				DRY 36
				POUND
				34
		BTU	PER	32
ENTHALPY	—		30
		28
26						65
24						(18)
22				60
20				(16)
						A
				55
				(13) B
				50
			(10) C

45D

(7)

40

44 42

70

(21)

100 90

46

80 (27)

75

(24)

80 70

60

50

40

RELATIVE

30

HUMIDITY

20

(%)

(4)

35

(2)

10

	B A	1
D C

35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110

(2)(4) (7) (10) (13) (16) (18) (21) (24) (27) (29) (32) (35) (38) (41) (43)

APPROXIMATE DRY BULB TEMPERATURE—°F (°C)

M11160

1 HIGH LIMIT CURVE FOR W6210D,W7210D.

Fig. E-7. Partial psychometric chart for a C7400A Solid State Enthalpy Sensor.

See Fig. E-8 for a C7400A Solid State Enthalpy Sensor output current versus relative humidity.

	100	C7400A OUTPUT CURRENT
	90
	80
RH	70
PERCENT	60		20	18	16	14	12	10	8	6	4
			mAmAmAmAmAmA mA mA mA
	50
	40											D = 17 MA
												C = 15.5 MA
	30											B = 13.5 MA
												A = 11 MA
	20
	10				D C		B	A
	40	50		60					80		90	100
						70
	(4)	(10)	(16)			(21)			(27)		(32)	(38)
					TEMPERATURE °F (°C)							M11605

Fig. E-8. C7400A Solid State Enthalpy Sensor output current vs. relative humidity.

77 74-2699