Ashcroft T400 Series Инструкции по установке и обслуживанию

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Installation and Maintenance Instructions for

T400 & T700 ASHCROFT

Switches for Temperature Control

T400 REMOTE MOUNT

0.22 (6)

4.03 (102)

3.32

(84)

4.61

(117)

3.5 lbs.

Ø2.31 (59)

3.26 (83)

T700 REMOTE MOUNT

5.20

(132)

2.18

Ø 0.28 x 3 HOLES

(55)

(7)

3.61

(92)

5.23

(133)

1.37

(35)

4.5 lbs.

2.31

(59)

4.37

(111)

The Ashcroft

temperature switch is a precision built U.L. and

INTRODUCTION

C.S.A. approved control device which features a mechanical

snap action switch. Controllers are available for operation on

temperature with fixed or variable differential. Also, manual reset

types are available for operation on increasing or decreasing

temperature. The manual reset types remain tripped until reset

by pressing a button on the top of the enclosure. The standard

electrical switch is SPDT and is available with various electrical

characteristics. Two SPDT switch elements mounted together

are available except on variable deadband and manual reset

types. Bulb material is stainless steel.

The Ashcroft snap action temperature switch is furnished in the

standard NEMA 4/4X and explosion proof NEMA 7 and 9 enclo-

sure styles. Both enclosures are epoxy coated aluminum castings.

All sales subject to standard terms and conditions of sale. I&M009-10006-10/00 (250-2230G) 12/17

Snap Action

2.27

(58)

0.28 (7) X 3 HOLES

1.25

(32)

2.77

(70)

3/4 NPT

2.31

(59)

ACTIVE BULB

LENGTH

Ø 0.37

(9)

3.58

(91)

1.22 (31)

0.32

(8)

Ø 3.90

(99)

0.31 (8)

3/4 NPT 2 HOLES

2.50

1.93

(64)

(49)

2.31

(59)

ACTIVE BULB

LENGTH

Ø 0.37

(9)

2.75

STEM LENGTH – INCHES

5.0

LINE LENGTH – FEET

T400 DIRECT MOUNT

0.22

(6)

0.25

(6)

3.32

(84)

4.61

(117)

2.00

(51)

2.5 lbs.

2.50

(64)

"L"

3.00

(76)

T700 DIRECT MOUNT

Ø 0.28 x 3 HOLES

(7)

0.03

(1)

3.60 (91)

5.23

(133)

1.37

(35)

3.7 lbs.

"L"

3.00

(76)

4.0

6.0

9.0

10.0

15.0

20.0

These controls are precision instruments and should never be

INSTALLATION

left with internal components exposed. During installation insure

that covers are in place and conduit openings are closed except

when actually working on the control. Good piping practice re-

quires the use of a thermowell for installation where pressure

may be applied to the thermal system. The thermowell provides

protection against physical damage as well as corrosive effects

of media flow. Use of a thermowell also facilitates removal of the

bulb from the process line without disturbing the process. Stan-

dard thermowell materials include brass, steel and stainless

steel; other materials are available upon request. Selection

should be based on corrosion resistance requirements and

process pressure.

Ø 0.28 (7) X 3 HOLES

4.03 (102)

2.77

(70)

3/4 NPT

7/8 HEX

Ø2.31 (59)

1/2 NPT MALE

3.26 (83)

2.31

(59)

ACTIVE BULB

LENGTH

5.20

(132)

2.18

(55)

0.32

(8)

Ø 3.90

(99)

3/4 NPT 2 HOLES

1.93

7/8 HEX

(49)

1/2 NPT MALE

2.31

(59)

2.31

4.37

(59)

(111)

ACTIVE BULB

LENGTH

12.0

25.0

2.27

(58)

1.25

(32)

0.25

(6)

2.00

(51)

"S"

1.31

(33)

Ø 0.37

(9)

3.58

(91)

1.22

0.03

(31)

(1)

0.31

(8)

1.31

"S"

(33)

0.37

(9)