TKP, TKFP, TKSP - Pneumatic duct-temperature controllers - Energy-efficient duct temperature control

Sep 10, 2026

Pneumatic duct-temperature controllers for energy-efficient temperature control in pneumatic installations. The duct temperature is measured continuously and set precisely using a setpoint adjuster. Oil-filled external transducers enable accurate sensing with remote mounting up to 1.5 m. Models support fixed-value control, optional fixed-value with schedule and setpoint shifting, and a sequence function. Key technical parameters include supply and output pressure ranges, P-control characteristic, setpoint limiting, and compliance with pressure equipment directive 97/23/EC.

LanguageEnglish

CategoryTechnology

FormatPDF

Pages4

Reading Time10 min

AccessFree to download

Areas of application

Continuous temperature measurement and control

Features

Technical description

Pressure and control parameters

Operation

Fixed-value basic function

Fixed-value + schedule extra function

Sequence extra function

Accessories and fitting notes

TKP, TKFP, TKSP: Pneumatic duct-temperature controllers How energy efficiency is improved Enables energy-efficient control of the duct temperature in pneumatic installations. The duct temperature can be set precisely with the setpoint adjuster. Areas of application Continuous temperature measurement and control, e.g. in ducting in air-conditioning systems. Activation of volume flow controllers or unit valves. Features 􀁸 Oil-filled external transducer for detecting the duct temperature 􀁸 Transducer can be distanced up to 1.5 m away 􀁸 P control characteristic 􀁸 Housing 72 x 72 mm in pure-white thermoplastic 􀁸 Setpoint adjuster with +/ -scale and adjustable stops for setpoint limiting 􀁸 Complies with directive 97/23/EC Art. 3.3 on pressure equipment Technical description 􀁸 Supply pressure 1.3 bar ± 0.1 􀁸 Time constant at 0.5 m/s air velocity approx. 2.5 min. 􀁸 Output pressure 0.2-1.0 bar 􀁸 P range Xp approx. 2 K 􀁸 Linearity 2% | Type | Control | Control | Air capacity | Setpoint | Weight | | --- | --- | --- | --- | --- | --- | | | function 1) | action | ln/h | range °C | kg | TKP 80A F117 TKP 80B F117 TKP 81A F117 TKP 81B F117 TKFP 81A F117 TKFP 81B F117 TKSP 80 F117 fixed-value fixed-value fixed-value fixed-value fixed/schedule fixed/schedule sequence A B A B A BA and B 33 33 200 200 200 200 2 􀁵 33 [17...27](17...27)[ ](17...27)[17...27](17...27)[ ](17...27)[17...27](17...27)[ ](17...27)[17...27](17...27)[ ](17...27)[17...27](17...27)[ ](17...27)[17...27](17...27) [17...27](17...27) 0.17 0.17 0.17 0.17 0.17 0.17 0.17 | | TKP 80 | TKP 81, TKFP 81 | TKSP | | --- | --- | --- | --- | | Air consumption ln/h | 33 | 20 | 66 | | Air exhaust capacity ln/h 2) | 50 | 34 | 50 | | External restrictor required | 1 pc | – | 2 pcs | | Dead zone Xt(sequence) | – | – | 2 K | | Wiring diagram | A02048 | A02049 | A02051 | | Fitting instructions | MV 23177 | MV 23187/23188 | MV 23201 | Supply pressure 4) Output pressure P-band Xp Linearity Time constants (0 .5 m/s) 1.3 bar 􀁲 0.1 0.2...1.0 bar approx. 2 K 2% approx. 2.5 min Permissible amb. temp Dimension drawing Wiring diagram and MV 0...55 °C M297351 see table | Accessories
0296724 000* Sensor holder for wall mounting
0303212 000* Sensor holder for duct mounting
0297302 000* Fixing bracket for the controller
0228234 001* Setpoint adjustment knob in pure white, with raised bridge
0297354 000* Short screw-in nipple R 18 for soft plastic tubing of 4 mm internal diameter
0297416 001 Housing cover in pure white, screw-type, without setpoint adjuster 3)
0297418 032 Housing cover in pure white, screw-type, with setpoint adjuster, scale [17...27](17...27) °C 3)*) Dimension drawing or wiring diagram are available under the same number | | | --- | --- | | 1) | ‘Fixed/schedule' requires an external command signal of 0...1.2 bar (e.g RXP 81) . Setpoint shift 􀁲 6 K.
Setpoint increase: 0.6...1.2 bar = 0...+6 K. Setpoint decrease: 0.6...0 bar = 0...–6 K | | 2) | Due to the blow-off noise produced, this value should not be exceeded | | 3) | For orders with controller, the housing will be replaced in the factory | | 4) | See Section 60 on regulations concerning the quality of supply air, especially at low ambient temperatures | Sauter Components 7167004003 04 Operation Fixed-value' basic function: TKP 80 & TKP 81 The bimetal sensor, which works on the bleed-off force-balance principle, converts the temperature within its P-band into a pneumatic standard signal of 0.2 to 1.0 bar. Direction of operation A: the output pressure increases as the temperature rises. Direction of operation B: the output pressure decreases as the temperature rises. When the temperature is rising, the oil-filled sensor bends and, via the force-balance lever, exerts a force on the nozzle–ball system. An output pressure – proportional to the force of the lever – builds up between the ext

FAQs

How is duct temperature controlled in these TKP/TKFP/TKSP controllers?

Temperature is measured continuously and converted into a pneumatic standard output signal (0.2 to 1.0 bar) based on the controller’s P-band. The output pressure direction (A or B) defines whether output increases or decreases as temperature rises.

What options are available beyond fixed-value control?

TKFP 81 provides a fixed-value function with schedule, enabling setpoint shifting via an external command signal. TKSP 80 and TKSP 81 provide a sequence function with a neutral-zone dead band and outputs for both directions (A and B).

What are the key technical limits that affect installation use?

The supply pressure is 1.3 bar ± 0.1, with output pressure 0.2 to 1.0 bar and an approximate P-band Xp of 2 K. To limit blow-off noise, air recovery should not exceed 50 ln/h for TKP 80 and 34 ln/h for TKP 81.

Sep 10, 2026

Upload by Lucas Vance