Thermal Controls & Electronics

Application

Thermon PTD-100 probes are specially designed to improve the measuring accuracy between control input sensors and controllers. The probe is designed to avoid the use of zener barriers between sensor and controllers in installations where the sensor is located in a hazardous area and the controller in a safe area. The PTD-100 can either be connected in an Ex e or Ex d junction box and is suitable for use with Thermon’s or other manufacturer’s electronic controllers.

Features

Reliable measurements:
Complete earth shielded stainless steel outer jacket prevents electromagnetic radiation to effect the measuring accuracy of control input.

Rugged construction:
Each PTD-100 has a stainless steel outer jacket so that the probe cannot be damaged by sharp edges, for instance the cladding of thermal insulation.

Approved for hazardous areas:
The PTD-100 is suitable for use in hazardous areas without the need for zener barriers. The probe can either be connected in an Ex e or Ex d junction box.

Wiring information

To obtain the maximum distance between the PTD-100 and the controller for different conductor sizes of the signal cable use the table below. Thermon recommends to use 3 wire cables with a braided earth shield. For hazardous area applications Thermon offers junction boxes such as the Terminator ZP-PTD-XP, ZP-PTD-WP and JB-K-0-WP. The junction boxes have one M25 and three M20 sealed entries for PTD and power connections.

3. Conductor to be solid or stranded.
4. Maximum length for signal cables installed in ambient temperatures up to 40°C. Max. loop resistance for controller input is 30 Ohm, including 1 Ohm allowance for contact resistance at terminal.

Resources

Datasheet
English (Europe) datasheet

Certifications/Approvals

CE
0344

Ex
FTZU 18ATEX 0033U
II 2 G Ex db IIC Gb
II 2 G Ex ib IIC Db
II 2 G Ex tb IIC Db

IEC IECEx
IECEx FTZU18.0005U
Ex db IIC Gb
Ex ib IIC Gb
Ex tb IIIC Db

EAC Ex
RU C-US.AA87.B.00333/20
1Ex d i IIC Gb