Orion KA231020 Low DP High Proof Pressure Difference Switches Instructions

Orion KA231020 Low DP High Proof Pressure Difference Switches

Product Specifications

• Model: FC/FE Low DP High Proof Pressure Difference Switches
• Pressure Capsule Material: Stainless Steel (S.S.)
• Diaphragm Material: Neoprene
• Gasket Material: Nitrile
• ‘O’ Ring Material: Nitrile
• Mounting: 3/4 BSP Mounting Nut

Product Usage Instructions

Installation

1. Identify the high and low pressure ports marked with (S.S.).
2. Ensure proper placement of support spring, bottom flange, support plate, diaphragm, gasket, top plate, top flange, transfer pin, ‘O’ ring, sealing diaphragm, top flange screw, and sealing ‘O’ ring as per the installation drawing.
3. Secure the pressure ports with flanges using appropriate welding techniques.
4. Check cable entry size and ensure compatibility with the provided options.

Range Selection
Refer to the Range Selection Table to determine the suitable range code based on your pressure requirements. Consider the differential values and maximum working pressure for accurate selection.

How to Order

1. Determine the model code based on Group specifications provided.
2. Select the appropriate pressure port material and size.
3. Choose the diaphragm material according to your application needs.
4. Contact the manufacturer for non-standard allocation or specific requirements.

Frequently Asked Questions (FAQ)

• Can I use a separate DPDT relay for achieving actuation and deactuation at the same point?
  Yes, if achieving actuation and deactuation at the same point is critical for your operation, you can use a separate DPDT relay. This relay will need a separate power supply for its coil to function effectively.

• How do I determine the actual value of the differential for my selected pressure range?
  For actual values of differential, please contact the sales office as the differential value can vary according to the pressure range selected and microswitch type.

PRESSURE CAPSULE DETAILS

1. High pressure port (S.S.)*
2. Support spring (S.S.)
3. Bottom flange (S.S.)*
4. Support plate (S.S.)
5. Diaphragm (Neoprene)
6. Gasket (Nitrile)
7. Top plate (S.S.)
8. Top flange ( S.S.)*
9. Transfer pin (S.S.)
10. ‘O’ ring (Nitrile)
11. Sealing diaphragm (Nitrile)
12. Top flange screw (S.S
13. .) Sealing ‘O’ ring (Nitrile)
14. Low pressure port (S.S.)
    Pressure ports are welded with flange

INSTALLATION DRAWING

RANGE SELECTION TABLE

Range Code| Range mbar (“wc)| *Differential mbar (” wc)| Maximum Working Pressure bar (psi)
---|---|---|---
Approximate Maximum for “A1” microswitch**
N02| 1.5 to 15

(0.602 to 6.030)

| 3.0

(1.205)

| 20.0

(290.075)

N03| 5 to 25

(2.009 to 10.046)

| 5.0

(2.009)

| 20.0

(290.075)

N05| 10 to 50

(4.018 to 20.093)

| 5.0

(2.009)

| 20.0

(290.075)

N10| 10 to 100

(4.018 to 40.186)

| 10.0

(4.018)

| 20.0

(290.075)

N15| 10 to 150

(4.018 to 60.280)

| 10.0

(4.018)

| 20.0

(290.075)

N25| 20 to 250

(8.037 to 100.466)

| 15.0

(6.030)

| 20.0

(290.075)

N35| 50 to 350

(20.093 to 140.653)

| 35.0

(14.060)

| 20.0

(290.075)

Note:

1. The minimum differential increases with the setpoint. The differential values mentioned in the above table are approximate maximum for FSR. The differential value will vary according to the pressure range selected and microswitch type. For actual values of differential please contact sales office.
2. When using 2SPDT switching arrangement, both microswitches may not actuate and/or deactuate at the same point.
   A small stage gap, normally upto +/- 5% FSR (depending on range code) may be observed. The On-Off differential (hysterisis) typically tends to be atleast double of those published for 1SPDT pressure switches.
   If actuation and/or deactuation at same point is critical part of operation, then it can be achieved by using a separate DPDT relay. This relay will need a separate power supply for it’s coil.

HOW TO ORDER FLAMEPROOF LOW DP HIGH PROOF PRESSURE DIFFERENCE SWITCHES

Group 1               Group 2                            Group 3| Group 4| Group 5| Group 6| Group 7| Group 8
---|---|---|---|---|---
Non standard allocation| Model| Cable Entry Size| Switch Type| Range Code (values in mbar)| Microswitch Type| Pressure Port Material / Size| Diaphragm
A prefix “N” is used in the model code in case of any non standard options / accessories that are provided with the switches. Will be given by manufacturer, only after agreement of supply details with customer.

The prefix is subject to change as per specific requirement.

| FC = IP66

Flameproof pressure switch, ATEx, IECEx &

PESO approved

FE =

IP66 Flameproof pressure switch, PESO approved

| 1 = Al. head

½” NPT threads

2 = Al. head

¾” NPT threads

3 = Al. head

M20 x 1.5 threads

*4 = Grey CI head

½” NPT threads

*5 = Grey CI head

¾” NPT threads

*6 = Grey CI head M20 x 1.5 threads

7 = SS head

½” NPT threads

8 = SS head

¾” NPT threads

9 = SS head M20 x 1.5 threads

*Not available in FE models

| D1 =

pressure difference switch, fixed differential without scale

D2 =

pressure difference switch, fixed differential with scale in mbar

D3 =

pressure difference switch, fixed differential with scale in “wc

For adjustable differential please select microswitches A6 or C6 in group 6

| N02 = (1.5 – 15)

N03 = (5 – 25)

N05 = (10 – 50)

N10 =

(10 – 100)

N15 =

(10 – 150)

N25 =

(20 – 250)

N35 =

(50 – 350)

| A1 = General purpose microswitch rated at 15 A; 250 VAC

*A6 = elements with adjustable deadband

*A7 = 2SPDT

switching elements

A8 = General purpose microswitch rated at 5 A, 250 VAC; 5 A, 28 VDC

*B7 = 2SPDT

Switching Elements

C6 = 1SPDT

Adjustable Differential

Please refer to page nos. 120 & 121 for options and specifications of microswitches

• Please contact sales office for additional information

| S1 =

SS316 / ¼” BSP(F)

S2 =

SS316 / ¼” NPT(F)

More options available, please contact sales office

| 0 =

Neoprene

1 = PTFE

Approx. switch| weight in Kgs
 | Enclosure|  | FC| FE|  | ****

For additional please contact

| ****

wetted parts Sales Office

Aluminium|  | 4.230| 3.730
Grey CI|  | 6.630| 6.130
SS|  | 6.720| 6.220
 |  |  |

A flameproof switch for gas group IIC, with ½” NPT cable entry in aluminium housing as 1SPDT pressure switch, having 0.1 bar to 1 bar pressure range, with 15 Amp. microswitch, SS316 pressure housing with ¼” BSP port size & neoprene diaphragm shall be specified by

Group 1| Group 2| Group 3| Group 4| Group 5| Group 6| Group 7| Group 8
---|---|---|---|---|---|---|---
 | FC| 1| D1| N03| A1| S1| 0

Please specify full model number to avoid ambiguity. If only the first two groups are specified while ordering, uncalibrated switches with standard wetted parts and enclosures will be supplied

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>