Gas expansion thermometer NS 100/160, clip-on bulb

Type series FN2/FN3

Gas expansion thermometer NS 100/160, clip-on bulb - FN2/FN3


  • Gas expansion thermometer for surface temperature measurement on pipes
  • Simple mounting without thermowell
  • Nominal ranges -40 °C…250 °C
  • High quality case with bajonet ring NS 100/160, degree of protection IP 66
  • Case and wetted parts of stainless steel
  • Accuracy class 1 per EN 13190 when insulated in the plant
  • Micro adjusting pointer for indication correction
  • bulb fixed welded
  • indicating unit positioning by rotating the bulb
  • with capillary (indicating unit independent of measuring point)
  • EAC declaration (upon request)


  • Explosion protection (ATEX) for mechanical devices
  • Certificate of measuring equipment for Russian Federation
  • Calibration certificate as per EN 10204
  • Case with liquid filling
  • Electronical angle-of-rotation sensor, Type series PL1100, see data sheet D6-020

Technical Data

Constructional design / case
Design: High quality case with bajonet ring,
material: stainless steel mat.-no. 1.4301 (304)
Nominal size: NS 100 or NS 160
Degree of protection per EN 60529: IP 66
Case filling: Labofin
Further filling liquids upon request.
Case seal: Material gasket: NBR
Window: Non-splintering laminated glass.
Option: non-splintering plastic (Macrolon) with adjustable reference pointer
Movement: Stainless steel with compensation
Scale: Pure aluminium, white with black inscription. Alternatively with marking or fixed reference pointer.
Pointer: Pure aluminium, black
with micro adjustment for zero point correction
Mounting: For design with capillary only:
Stand-alone mounting with wall bracket per DIN 16281, alternatively with flange for surface mounting or for flush mounting with DIN mounting flange.
Weights: NS 100 without filling: approx. 0.8 kg
NS 100 with filling: approx. 1.2 kg
NS 160 without filling: approx. 1.4 kg
NS 160 with filling: approx. 2.0 kg
Process connection
Design: Clip-on temperature detecting element, bottom or centre back connection, alternatively with capillary.
Optional with screwing for one-off positioning of indicating unit (rotatable temperature detecting element).
Measuring element
Measuring element: Bourdon tube, dead zone free with noble gas filling.
Temperature sensor
Temperature-detecting element: Adapted to pipe or circle form, suitable for clamp mounting for diameters of approx. 25 to 150 mm. Further diameters upon request.
Capillary (optional): Available in different lengths, alternatively coated with protective tube
Material: stainless steel mat.-no. 1.4571 (316Ti)
Nominal range
Nominal range (EN 13190): -40 °C...250 °C.
Measuring spans ≥ 60 °C.
See order details, further upon request.
Alternatively extension of measuring range to the complete nominal range.
Accuracy class: 1.0 per EN 13190
Temperature ranges
Ambient: Per EN 13190.
Ambient temperatures that deviate from EN are to be specified.
Storage and transport: -20…60 °C
Further temperature ranges upon request.
Tests and certificates
See documents.
Instructions for use
The loading capacity of the temperature detecting element depends on the following parameters:
- Media
- Media pressure
- Media temperature
- Flow velocity
- Insertion length
- Material
A technical examination might be necessary.
Information on other models see order details or upon request.
Further information to mounting and operation see Operating Instruction BA_017.
Type series
FN2460, FN2420, FN2440, FN2360, FN2320, FN2340, FN2660, FN2620, FN2640, FN2560, FN2520, FN2540, FN3460, FN3420, FN3440, FN3360, FN3320, FN3340, FN3660, FN3620, FN3640, FN3560, FN3520, FN3540


  • T2-038

    Data Sheet

  • BA_017

    Operating Instruction

  • XA_005

    Ex Instructions

  • KE_053

    Declaration of Conformity