Raystat-EX-03 thermostat Maximize

Raystat-EX-03 thermostat

Raystat EX-03 is and EEx e approved surface 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 hazardous areas. Benefits include, easy installation and commissioning, low cost installation and relative accurate control.

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Raystat EX-03 is and EEx e approved surface sensing thermostat locally mounted thermostat that is suitable for field installation and typically direct switching of the electric heat trace heating circuit. It provides temperature control for all Raychem BTV, QTVR, XTV, KTV and VPL heat trace heating cables. The Raystat EX-03 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 on the Raystat EX-03 thermostat is adjusted via digital thumb wheel switches inside the thermostats enclosure, the range is 0°C to +499°C. The surface sensing Pt100 probe is supplied with a 2 metre long stainless steel sheathed extension cable, allowing freedom to locate the thermostat remotely from the temperature contact area.

Typically used installation application include: frost protection and frost heave prevention, or process temperature maintenance, long pipeline heating, tank heating with a relatively narrow temperature maintainence band

Raystat EX-03 approval details
Area classificationHazardous area, Zone 1, Zone 2 (Gas), Zone 21, Zone 22 (Dust), Ordinary
ATEX certificationBaseefa 03ATX0695X
ATEX markings 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
Raystat EX-03 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
Raystat EX-03 switching
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
Power consumption:110 Vac ~ 4 VA, 230/254 Vac ~ 3 VA
Rating:16A at 110 Vac ±10% 50/60 Hz
 16A at 230/254 Vac ±10% 50/60 Hz
 Resistive load
Raystat EX-03 temperature sensing
Type:2 wire Pt100
Dimensions52 mm x Ø 5 mm
Sheath material:Stainless steel (type SS316)
Exposure temperature:-50°C to +499°C
Raystat Ex-03 setting
Range:-0°C to +499°C
Switching accuracy±1 K at 5°c
 ±1 % of setpoint above 100°c
Differential:≈ 1°C at 100°C
 ≈ 2°C at 200°C
 ≈5°C at 499°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
Maximum recommended heating cable length is restricted by the electrical protection sizing or the switching capacity of the RAYSTAT EX-03.  For more details - download RAYSTAT EX-03