Temperature transmitter GV4 MiniTherm for installation in a separate thermowell

Type series GV4730

  • HART
Temperature transmitter GV4 MiniTherm for installation in a separate thermowell - GV4730


  • Compact case of stainless steel in hygienic design according to recommendations from EHEDG and 3A, degree of protection IP 65/67
  • High-resolution graphic display with Intuitive operation and backlight
  • Quick access to device data
  • Accuracy ≤ 0.25 K
  • Temperature range: -50...200 °C
  • Output signal 4…20 mA with HART® protocol
  • Digital communication via PDM/EDD and FDT/DTM
  • Measuring resistor Pt100, class A
  • Measuring insert with spring tension
  • Fast response


  • Calibration certificate per EN 10204-3.1
  • Degree of protection IP 69K
  • Case and front cover of stainless steel 316L
  • EAC declaration (upon request)

Technical Data

Constructional design case
Design: Hygienic case of stainless steel, continuously rotatable by ± 170°
Material case and front cover: Process connection back:
Stainless steel mat.-no. 1.4305 (303)
Option: stainless steel mat.-no. 1.4404 (316L)
  Process connection bottom:
Stainless steel mat.-no. 1.4301 (304)
Option: stainless steel mat.-no. 1.4404 (316L)
Gasket: Silicone / NBR
EPDM / FKM (if degree of protection IP 69K)
Degree of protection per EN 60529: IP 65/67
Option: IP 69K
Climatic category per EN 60721 3-4: 4K4H
Material window: Macrolon hardened
Option: Non-splintering glass
Electrical connection: Circular connector M12
  Option: Cable glands
- M16x1.5, PA black
- M16 x 1.5, brass nickel-plated
- M16x1.5, stainless steel
- M20x1.5, PA black
- M20 x 1.5, brass nickel-plated
- M20x1.5, stainless steel
- 1/2" NPT, PA black
  Further connections upon request
Terminal blocks: Spring clamp terminals up to 2 mm2
Type plate: Adhesive label
Measuring system
Design: Measuring insert Ø 3 mm with spring tension and union nut M12x1.
Material: Measuring insert: stainless steel mat.-no. 1.4404 (316L)
  Union nut: stainless steel mat.-no. 1.4301 (304)
Length measuring insert: See order code
Measuring resistor: Pt100 per EN 60751, class A
Instrument connection: Union nut M 12x1
Accuracy: ≤ 0.25 K
Temperature influence case: typ. 0.1 K/10 K
Response time per EN 60751 (with flowing water): For measuring insert Ø 3 mm: t90 = 3s
  For further information see the data sheets of the thermowells.
We recommend the use of heat sink compound (see data sheet T6-030).
Display: - High-resolution graphic display with backlight
- 4-button operation
- Freely configurable display modes
- Continuously rotatable
- Removable under voltage
Signal: 2-wire technology 4…20 mA
Lower limit 3.8…4 mA
Upper limit 20…21 mA
Lower alarm current < 3.6 mA
Upper alarm current > 21 mA
Current limitation 22 mA
Digital communication: HART®-protocol, version 7
  Device driver:
- DTM for PACTware or compatible systems (FDT compliance)
Resolution: ≤ 1 µA
Current sensing-function: 3.55…21.5 mA selectable in steps of 0.001 mA
Load R: R ≤ (U-12V DC)/0.02 A [Ω]
U = supply voltage
  for HART®communication R ≥ 230 Ω
Supply voltage
Functional range: 12...30 V DC, protected against polarity reversal
Ripple: < 5 %
Temperature ranges
Ambient: -20...80 °C
-40…80 °C (Display visibility is limited at temperatures below - 30 °C)
Media: -50...200 °C
Storage: -40...80 °C
Tests and certificates
See documents
Type series


  • T4-011

    Data sheet

  • BA_085

    Operating Instruction

  • KE_052

    Declaration of Conformity


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