Terminal Head Connected RTD Assemblies
Table A
| Figure 1 |
RTD Assembly without
Process Fitting |
Figure 4 |
Spring-Loaded RTD
Assembly with 1/2" NPT
Pipe Nipple Extension |
 |
 |
| Figure 2 |
RTD Assembly with
1/2" NPT Process Fitting |
Figure 5 |
Spring-Loaded RTD
Assembly with 1/2" NPT
Hex Fitting/Union
Nipple Extension |
 |
 |
| Figure 3 |
Spring-Loaded RTD
Assembly with 1/2" NPT
Process Fitting |
Figure 6 |
Spring-Loaded RTD
Assembly with 1/2" NPT
Nipple/Union/Nipple Extension |
 |
 |
* For custom extension length, add desired length as suffix to basic order code. Variable lengths only available in figure 4, 5 and 6
Example: 5046, for 6" long extension.
** Fitting/Extension shown in figures 1, 2, 3, & 5 only available in stainless steel.
*** Hockey puck transmitter will fit these heads (see accessories section)
**** For corrosion resistance, epoxy coating can be ordered on there head option, Add "EC" as suffix to basic order code.
Example: 300EC.
- If connection head is not required, simply insert figure number as basic order code Example: 3
How to Order:
| Pgs. 6-8 |
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Page 9 |
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Page 10 |
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TW Section |
Basic
Order Code
104
Table A |
Sensor
Diameter
4
Table B |
Element
A
Table C |
Tolerance
1
Table D |
Temp.
Range
B
Table E |
Sheath
Mate
1
Table F |
Lead
Conn.
C
Table G |
"L"
Length
12
Table H |
Options
2AS
Table I |
Order Code for
Thermowell
If required
(see Thermowell
section) |
| Type of Head |
Head Material |
Fitting Material |
Basic Order Code |
| Figure 1 |
Figure 2 |
Figure 3 |
Figure 4 |
Figure 5 |
Figure 6 |
****
Inustrial
Weatherproof
Screw Cover Head |
Cast Aluminum |
Stainless Steel |
100 |
200 |
300 |
400 |
500 |
600 |
| Carbon Steel |
** |
** |
** |
401 |
** |
601 |
| Cast Iron |
Stainless Steel |
102 |
202 |
302 |
402 |
502 |
602 |
| Carbon Steel |
** |
** |
** |
403 |
** |
603 |
****
General Purpose
Weatherproof
Screw Cover Head
For Flip Top Style, add sufix
“F” to basic order code |
Cast Aluminum |
Stainless Steel |
104 |
204 |
304 |
404 |
504 |
604 |
| Carbon Steel |
** |
** |
** |
405 |
** |
605 |
Corrosion Resistant
Weatherproof Screw
Cover Head
For Flip Top Style, add sufix
“F” to basic order code |
Poly-Propylene |
Stainless Steel |
106 |
206 |
306 |
406 |
506 |
606 |
| Carbon Steel |
** |
** |
** |
407 |
** |
607 |
***
FM Approved Explosion Proof
Head meets NEC Class I
Div I Groups B, C, D
Class II Div I, Groups E, F, G
NEMA 4X, 7, 9 |
Cast Aluminum |
Stainless Steel |
108 |
208 |
308 |
408 |
508 |
608 |
| Carbon Steel |
** |
** |
** |
409 |
** |
609 |
| 316 Stainless Steel |
Stainless Steel |
110 |
210 |
310 |
410 |
510 |
610 |
| Carbon Steel |
** |
** |
** |
411 |
** |
611 |
RTD Assembly Specifications
Table B (sensor diameter)
| Sensor Diameter |
Order Code |
| 1/8" |
(.125") |
2 |
| 3/16" |
(.188") |
3 |
| 1/4" |
(.250")STD |
4 |
| 5/16" |
(.312") |
5 |
| 3/8" |
(.375") |
6 |
Table C (element)
Resistance
0°C |
Material |
Temperature Coefficient/Alpha (a) |
Order Code |
| Single Element |
Dual Element |
| 100Ω |
Platinum |
.00385Ω/Ω°C |
A |
2A |
| 100Ω |
Platinum |
.003916Ω/Ω°C |
B |
2B |
| 100Ω |
Platinum |
.003902Ω/Ω°C |
C |
2C |
98.129Ω
(100Ωnom-) |
Platinum
Sama Standard
RC21-4-1966 |
.00392Ω/Ω°C |
D |
2D |
| 120Ω |
Nickel |
.00672Ω/Ω°C |
E |
2E |
| 9.035Ω |
Copper |
.00427Ω/Ω°C |
F |
2F |
Table D (tolerance)
| Accuracy at 0°C |
Order Code |
| ± .12% |
Class B |
1 |
| ± .06% |
Class A |
2 |
| ± .03% |
Lab Grade |
3 |
| ± .02% |
Lab Grade |
4 |
| ± .01% |
Lab Grade |
5 |
Table E (temperature range)
| Temperature Range |
Order Code |
-50 to +250 Deg. C
-58 to +482 Deg. F |
A |
-50 to +400 Deg. C
-58 to +752 Deg. F |
B |
-50 to +660 Deg. C
-58 to +1220 Deg. F |
C |
Table F (sheath material)
| Sheath Material |
Order Code |
| 316 SS |
1 |
| Alloy 600 |
2 |
| Alloy C-276 |
3 |
Table G (lead connection)
| 2-Wire |
Order Code A |
 |
| 3-Wire |
Order Code B |
 |
| 4-Wire |
Order Code C |
 |
Table H (length)
Specify "L" in Inches
Length Not required when Thermowell is used. |
Optional Connections
(For extended lead types)
Table I (options)
| |
Description |
Order Code |
 |
Spade Lugs for #8 Screw |
L |
 |
Male Plug |
M |
The connectors shown are for 3-wire single element assemblies.
Two - 2 Pin connectors mounted in tandem will be furnished for both styles of 4-wire single element assemblies.
Dual element assemblies will have the same connector arrangements except Doubled. |
 |
| Female Jack |
F |
 |
Watertight connector |
1/2" NPT |
W1 |
| 3/4" NPT |
W3 |
 |
Watertight connector with lugs for #8 screws |
1/2" NPT |
WL1 |
| 3/4" NPT |
WL3 |
| Optional Mounting Fittings |
| Description |
NPT |
Order Code |
 |
1/8" |
1AS |
| 1/4" |
2AS |
| 3/8" |
3AS |
| 1/2" |
4AS |
| 3/4" |
6AS |
For Teflon readjustable insert, replace "A" with "R"
Example: 4RS |
|
|
| Optional Spring-Loaded Devices |
| Description |
Order Code |
Adjustable Spring |
FP 275 |
1/2" NPT Double threaded adjustable hex bushing |
FP 240 |
1/2" NPT single threaded adjustable hex bushing |
SSL |
|
