Specialists in pressure

Multi-range measuring transducers for pressure, differential pressure and volume flow

PREMASGARD 211x / 212x

Efficient, convenient and network-enabled

Elegant appearance, touch-operated interface, large display, and Modbus-compatible

RYMaskon

Multi-funtional duct sensor

For humidity, temperature, pressure, differential pressure and volume flow for monitoring and controlling heating, ventilation and air-conditioning systems

PREMASGARD® 814x-Modbus

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Electronic frost protection monitor

2-phase thermostat with continuous and switching output for reliable prevention of frost damages and freezing

THERMASREG® FS-20

Für jede Anwendung die richtige Lösung [Translate]

FST-3D-HR

THERMASREG® FST-3D-HR

Item No. 1102-1023-1102-000
EAN 4 251325 608884

Mechanical frost protection thermostat/ frost monitor THERMASREG® FST with switching output, fully-active sensor rod, with automatic reset or with mechanical locking – with manual reset is available with capillaries in lengths of 0.6 m, 1.8 m, 3 m, 6 m, 12 m. The frost protector is suitable for air or water-side temperature monitoring at heat exchangers, water circulation systems and heating registers to prevent freezing up and to avoid frost damage, e.g. in ventilation and air conditioning ducts. All devices are intrinsically safe and are equipped with sensor breakage detection. In the event of damage to the capillary membrane system, the frost sensor automatically switches to the heating function. The FST 3 can also be used to monitor liquids. The sensor tube can be installed inside an immersion sleeve. MK-05-K mounting clamps are included in the scope of delivery.

90,50 € net
Operating difference 2 ± 1 K (3.6 ± 1.8 °F)
Switching capacity 10 (2) A, AC 250 V;
because of gold-plated switching contacts
also switching of signal voltages < 24 V
Contact dust-proof micro switch
as single-pole potential-free changeover contact
Reproducibility ± 0.5 K (± 0.9 °F)
Setting range –10...+15 °C/ +14 °F...+59 °F,
factory setting to w = +5 °C (+41 °F)
Ambient temperatures maximum operating temperature: +70 °C (+158 °F)
minimum operating temperature: w + min. +2 °C (min. +3.6 °F)
storage/ transport: –30...+70 °C (–22...+158 °F)
capillary: max. +150 °C (+302 °F)
Permissible medium water
Process connection by mounting clamps MK- 05 - K
(included in the scope of delivery)
Sensor responding length approx. 40 cm
Mounting position arbitrary
Electrical connection 0.14 - 2.5 mm²
Housing plastic, UV-stabilised,
material polyamide, 30 % glass-globe reinforced,
with quick-locking screws
(slotted/ Phillips head - combination),
colour traffic white (similar to RAL 9016)
Housing dimensions 126 x 90 x 50 mm (Tyr 2)
Cable gland M 16 x 1.5; including strain relief
Length of capillary tube 1.8 m
Resetting manual
Other materials mechanical sheet metal parts: galvanised steel
capillary tube: copper
capillary tube filling: R 507
switching contacts: Ag/ Ni (90%/ 10%) gold-plated (3 μm)
Protection class I (according to EN 60 730-1)
Protection type IP 65 (according to EN 60 529)
Standards CE conformity,
EMC directive 2014/ 30/ EU,
low-voltage directive 2014/ 35/ EU
Function Contact C - 2: danger of frost/ sensor breakage
Contact C - 3: normal operation
Type Item No. Price
KRD-04 Capillary tube gland bracket Capillary tube gland bracket for FST and MWTF/MWTM for installation in ducts / sheet metal walls 7100-0030-7000-000 7,52 €
MK-05-K Mounting brackets, plastic Plastic mounting brackets 7100-0034-1000-000 8,33 €
TH-MS-01 Immersion sleeves, Brass 7100-0011-5402-000 13,11 €
TH-VA-02 Immersion sleeves, Stainless steel 7100-0012-5402-000 34,37 €

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