Orion FC/FE Temperature Switches Instructions

FC/FE
TEMPERATURE SWITCHES

INSTALLATION DRAWING

RANGE SELECTION TABLE

Range Code| Range °C (°F)| Differential* °C (°F)| Maximum Working Temperature
°C (°F)
---|---|---|---
Approximate Maximum for “Al” microswitch
T1H| 25 to 90
(77 to 194)| 15.0
(59)| 150.0
(302)
T2H| 70 to 150
(158 to 302)| 20.0
(68)| 200.0
(392)
T3H| 120 to 215
(248 to 419)| 30.0
(86)| 300.0
(572)

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 TEMPERATURE 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 Deg. Cen.)| Microswitch Type| Temp. Bulb
Material / Size| Capillary
Material / Size
Reserved for Non-standard
Options not covered in
Catalogue. Will Be given by
Manufacturer, Only after
Agreement of Supply details
With customer.| 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| T1 =
Temperature Switch, fixed
differential without scale
T2 =
Temperature Switch, fixed
differential with scale in °C

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

| T1H = 25 – 90
T2H = 70 – 150
T3H = 120 – 215| 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| B1 = Brass /Dia. 9.5 mm, 123 mm length, with 3/8″BSP (M) thermowell connection
  B2 = Brass /Dia. 9.5 mm, 123 mm length, with 3/8″NPT (M) thermowell connection
  B3 = Brass /Dia. 9.5 mm, 123 mm length, with 1/2″ NPT (M) thermowell connection
  S1 = SS316 /¼” BSP(F)
  S2 = SS316 / ¼” NPT(F)
  S3 = SS316 /1″ BSP(M)
  Please contact sales office for additional information| 2 = SS316 /2.0 meter

E.g. A Flameproof Temperature switch, with 1/2”NPT cable entry in aluminum housing as 1 SPDT, fixed differential without scale, having 25˚C to 90˚C temperature range, with 15 Amp. microswitch, with Brass 9.5 mm diameter bulb, having length 123 mm with 3/8”BSP(M),with 2.0 meter SS316 capillary length shall be specified by

Group 1

| Group 2| Group 3| Group 4| Group 5| Group 6| Group 7| Group 8
---|---|---|---|---|---|---|---

| FC| 1| T1| T1H| A1| B1|

2

Please specify full model number to avoid ambiguity.

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