PT 100 Encapsulated Motors
PT 100 Encapsulated Motors
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Encapsulated Motors
The PT100 is a precision platinum wire resistor that is specified occasionally as a temperature input for process control equipment. A jacketed control lead must be run from the PT100 lead to the above-ground equipment. The above-ground equipment is not available from Franklin Electric and is typically part of a custom panel or data acquisition system.
PT100 sensor retrofit kits from Franklin Electric come with complete instructions and allow for easy field installation.
To install the PT100 sensor bolt, remove the top end bell bolt that is opposite of the lead and replace it with the PT100 screw. Tighten the sensor bolt to the torque values shown below.
- 6" PT100
- 4 kW-45 kW: 54- 61 Nm
- 8" PT100
- 30 kW-45 kW: 54- 61 Nm
- 55 kW-150 kW: 115- 122 Nm
Franklin Electric does not offer the required sensing device, it is available from specialty dealers.
Encapsulated Motors HiTemp
It's ohmic resistance is proportional to the sensed temperature. The FE field replaceable PT100 is potted into a screw holding the upper end bell. Because of his remote position relative to the windings, the sensing relay should be adjusted according to the below table.
To install the PT100 sensor bolt, remove the top end bell bolt that is opposite of the lead and replace it with the PT100 screw. Tighten the sensor bolt to the torque values shown below.
- 6" PT100 HiTemp
- 4 kW-30 kW: 54- 61 Nm
- 8" PT100 HiTemp
- 30 kW-110 kW: 115 - 122 Nm
Franklin Electric does not offer the required sensing device, it is available from specialty dealers.
Related Products
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Encapsulated Motors Temperature Conditions
Conditions Temp. of the Water
Without Motor OperationMax. Trip Temp. / Resistance Setting
(for standard lead length)Motor operating at nameplate output
with 0.16 m/sec flow past the motor10 °C 40 °C / 115.5 Ω 15 °C 44 °C / 117.0 Ω 20 °C 48 °C / 118.6 Ω 25 °C 51 °C / 119.7 Ω 30 °C 55 °C / 121.3 Ω Motor that has been derated
with 1 m/sec flow past the motor35 °C 59 °C / 122.8 Ω 40 °C 63 °C / 124.3 Ω 45 °C 66 °C / 125.5 Ω 50 °C 70 °C / 127.0 Ω 55 °C 74 °C / 128.6 Ω 60 °C 78 °C / 130.1 Ω 6" PT100 Standard Encapsulated Motors Model Numbers
Kit Number Motor Type Wire Insul. Max. Medium Temp. Lead [mm²] Lead Length [m] 305 327 903 6" all ratings ½ - 13 UNC
Europe motors starting 07. 2002
US Motors starting 11.2001 onRubber 60 °C 3X0.5 10 8" PT100 Standard Encapsulated Motors Model Numbers
Kit Number Motor Type Wire Insul. Max. Medium Temp. Lead [mm²] Lead Length [m] 305 326 902 30 - 45 kW (type 2.1)
Rubber60 °C 3X0.5 10 305 326 901 55 - 150 kW (type 1)
Rubber60 °C 3X0.5 10 Encapsulated Motors HiTemp Temperature Conditions
Conditions Temp. of the Water
Without Motor OperationMax. Trip Temp. / Resistance Setting Motor operating at nameplate output
with 0.16 m/sec flow past the motor50 °C 60 °C 60 °C 70 °C 70 °C 80 °C 75 °C 85 °C 80 °C 90 °C 90 °C 100 °C 6" Encapsulated Motors HiTemp Model Numbers
Kit Number Motor Type Wire Insul. Max. Medium
Temp.Lead
[mm²]Lead Length
[m]156 098 111K 4 - 30 kW Silicone 90 °C 4X0.35 10 156 098 112K Silicone 90 °C 4X0.35 130 8" Encapsulated Motors HiTemp Model Numbers
Kit Number Motor Type Wire Insul. Max. Medium
Temp.Lead
[mm²]Lead Length
[m]156 098 116K 30 - 110 kW (type 1) Silicone 90 °C 4X0,35 10 156 098 117K Silicone 90 °C 4X0,35 130
