Raystat-EX-04 thermostat Maximize

Raystat-EX-04 thermostat

The Raystat EX-04 is an EEx e approved ambient sensing thermostat to provide temperature control for electric heat tracing (EHT) systems with Raychem BTV, QTVR, XTV & KTV heating cables. It is approved for use in ATEX hazardous areas. Benefits include, easy installation and commissioning, low cost installation and relative accurate control.

More details

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The Raystat EX-04 is an EEx e approved ambient sensing thermostat, locally mounted that is suitable for field installation within hazardous areas and typically direct switching of the electric heat tracing circuit. It provides temperature control for all Raychem BTV, QTVR, XTV, KTV and VPL heating cables. The unit can be supplied at nominal voltage of either 110V 50/60 Hz or 230V 50/60 Hz and has a double pole switch rated at 16A. The temperature setting is adjusted via digital thumb wheel switches inside the enclosure, the range is 0°C to +499°C. The ambient sensing Pt100 probe is supplied with a wind shield, allowing accurate measurement of ambient temperature without a “wind chilling” effect.

The Raystat EX-04 is typically used installation application include: Frost protection, Pipe Freeze and Frost Heave prevention

ATEX approval details
ATEX classificationHazardous area, Zone 1, Zone 2 (Gas), Zone 21, Zone 22 (Dust), Ordinary
 ATEX approvalsBaseefa 03ATX0695X
 Ex II 2 GD T85°C EEx emia IIC T6 (-50°C ≤ Ta ≤ 55°C)
 II 2 G/D T6 for 99-230V supply and T5 for 230-253V supply
Technical details 
Enclosure material:High impact resistant glass filled polyester
Ingress protection:IP66
Entries2 x M20 glands suitable for cable Ø 7.5 to 13 mm
 1 x M25 with M25(M)/M20(F) adaptor and M20 plug
Operating temperature-50°C to +55°C ambient
Output relay:Dual pole change over DPDT (optional volt free contacts)
Supply voltage:110 Vac ±10% 50/60 Hz
 230/254 Vac ±10% 50/60 Hz
Rating:16A at 110 Vac ±10% 50/60 Hz
 16A at 230/254 Vac ±10% 50/60 Hz
 Resistive load
Temperature sensing
Type:2 wire Pt100, complete with wind shield
Dimensions52 mm x Ø 5 mm
Sheath material:Stainless steel (type SS316)
Exposure temperature:-50°C to +55°C
Range:-0°C to +49°C
Switching accuracy±1 K at 5°c
 ±1 % of setpoint above 100°c
Differential:≈ 1°C
Method:Thumb dial switches within the enclsoure
Connection terminals:max. 4 mm²
Associated support brackets
Raychem SB-100, SB-101, SB-125 or surfacing mounting with 4 fixing holes (M6) on 110 mm x 140 mm centres