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STANDARD CONDUIT BOX IS 
SHOWN FOR REFERENCE ONLY 
AND MUST BE PURCHASED 
FROM YOUR LOCAL ELECTRICAL 
SUPPLY HOUSE

WALL PLATE AND MOUNTING BRACKET IS 
NOT INCLUDED. ORDER ACCESSORY NO. EWS-MB

EWS Series

Economical Wall Mount Sensors

INSTRUCTION

SHEET

M3500/0514

TEMPERATURE VS OUTPUT

Deg.C

-18

-10

0

10

20

30

40

50

57

Deg. F

0

14

32

50

68

86

104

122

135

4-20 mA

4.0

5.7

7.8

9.9

12.1

14.2

16.3

18.5

20.0

1-5 vdc

1.00

1.43

1.95

2.48

3.00

3.55

4.08

4.63

5.00

Specifications

Temperature Range: -18 to 57°C  

 

 

        (0 to 135°F)

Accuracy: (Still Air) ±0.7°C (±1.2°F)  

@ 25°C ±1.4°C (2.5°F) across full range 

(Slow Moving Air) ±1.4°C (2.5°F) @ 25°C 

±1.7°C (3.0°F) across full range 

Note: Not recommended for fast moving 

air applications.
Repeatability: 
±0.3°C (0.5°F)
Output: 4-20 mA (1-5 Vdc) (User Selectable)
Temp. Time Constant: (for 63.2% response) 

9 sec. in moving air (1 M/sec.), 30 sec. in still air
Power: 12-24 Vdc @ 20 mA
Max. Loop Resistance:   

(V supply -8 V)/.020 A = Ohms
Enclosure Material: Acrylonitrile Butadlene
Dimensions: 79 x 54 x 45 mm  

(3.12 L x 2.12 W x 1.78" H)

1  2  3  TB2 

EWS-TX 

TEMPERATURE TRANSMITTER 

12-24 VOLTS

DC POWER

SUPPLY

MODEL: PSU-93 

MODEL: DPi32 

MILIAMP INPUT 

PROCESS METER 

73 

4-20 MA OUTPUT WIRING 

1  2  3  TB2 

EWS-TX 

TEMPERATURE TRANSMITTER 

12-24 VOLTS

DC POWER

SUPPLY

MODEL: PSU-93 

MODEL: DPi32 

VOLTAGE INPUT 

PROCESS METER 

73 

1-5 VDC OUTPUT WIRING 

  Model No. 

Description

 

EWS-MB 

 Conduit box mounting bracket/wall plate adaptor kit

 PSU-93 

 24 Vdc power supply (for transmitter models)

 

TX4-100 

Shielded 4 conductor transmitter cable (100 ft)

Accessories

EWS-TX

Shop online at: omega.com   e-mail: [email protected] 

For latest product manuals: omegamanual.info

60.12

(2.37)

30.22

(1.19)

31.75

(1.25)

85.85

(3.28)

60.45

(2.38)

70.64

(2.78)

DIMENSIONS mm (in)

(2) MTG. 

HOLES 

FOR

#6–32 

SCREWS

0.79

(0.031)

WALL

THICKNESS

3.96

(0.156)

115.09

(4.531)

63.50

(2.50)

CONDUIT BOX MOUNTING PLATE

(0.06" THICK ALUMINUM)

EWS–MB

1.58

(0.062)

53.97

(2.125)

107.95

(4.25)

Ø 3/16

THRU.

2 PLACES

Ø 35.71 

(1.406)

Ø 12.7

(0.5)

6-32 UNC THRU

2 PLACES

WALL PLATE

(SS, BRUSH FINISH)

EWS–MB

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