Spirax Sarco EL2270/EL2271 Resistance Temperature Sensor

Description

Spirax Sarco EL2270 and EL2271 temperature sensors, the EL2270 is a PT100 platinum resistance temperature sensor for general industrial applications, a 3-wire RTD to EN60751: Class A (Level A), which can be connected to temperature indicators or controllers with 3-wire PT100 inputs, and for specific applications, the EL2271 is a combination PT100 sensor and transmitter with a 3-wire sensing element. The EL2271 is a PT100 sensor and transmitter combination with a 3-wire sensing element to EN60751: Class A (Level A) and a 4-20mA output to ATEX 1G EExia IIC/IIB T4/T5/T6 for temperatures up to -50°C. It is also available with a 4-20mA output to ATEX 1G EExia IIC/IIB T4/T5/T6 for temperatures up to -50°C. It can be connected to a temperature indicator or controller with a 3-wire PT100 input for application-specific use. T4/T6, field calibratable from -50°C to 500°C, 4-20mA output can be connected to devices with corresponding inputs, 3-point calibration series transmitters are also available.

Available Models

Available types	SKU
EL2270 PT100 25MM	3221260
EL2270 PT100 50MM	3221261
EL2270 PT100 75MM	3221262
EL2270 PT100 125MM	3221263
EL2270 75MM KIT	322K1262
EL2270 125MM KIT	322K1263
EL2271 100 - 250 °C 50MM	3221365
EL2271 100 - 250 °C 75MM	3221368
EL2271 100 - 250 °C 125MM	3221391
EL2271 75MM KIT 100 - 250 °C	322K1368
EL2271 125MM KIT 100 - 250 °C	322K1391
EL2270\1 pocket 50 MM	3221294
EL2270\1 pocket 75 MM	3221295
EL2270\1 pocket 125MM	3221292

protective cover

Three types of protective covers are available:

1. Thin wall protective sleeve, ½" NPT threaded connection;
2. Protective sleeve for tapered holes, ½" NPT threaded connection;
3. Hygienic protective sleeve to 3A hygienic standard, 1½" hygienic clamp connection (ASME BPE), electrolytically polished to 0.4μm (proof available on request). The smaller EL2270 is unprotected, the protective sleeve is made of 316 stainless steel and is available up to 500°C. It should be selected according to the inductor insertion length 'D', the protective sleeve size 'F' is shorter than the inductor size 'D', 225mm. "The protective sleeve size 'F' is shorter than the inductor size 'D'. The protective sleeve for the 225mm and 725mm inductors is only intended for use in non-mobile locations.

Technical Parameters

offerings	EL2270 (rapid response type available on demand)	EL2271
housings	KNE - Aluminum - Resin coated	KNE - aluminium alloy - epoxy coated
inductive probe	316 stainless steel	316 stainless steel
connector	½" NPT	½" NPT
cable connector	M20 with cable gland to BS 4568, Chapter 1	M20 with cable gland to BS 4568, Chapter 1
Sealing Grade	IP65	IP65
Ambient temperature (minimum)	-50 °C	-50 °C
Ambient temperature (max)	+70 °C	+85 °C

Electrical parameters

offerings	EL2270	EL2271
temperature range	-50 °C - +500 °C	-50 °C - +500 °C
exports	Pt100 according to EN 60751: Class A	Loop supply 4 - 20 mA
Sensor Fault Output	-	Typically 23 mA
power supply	-	10 - 30 Vdc
Maximum circuit resistance	-	636  at 24 Vdc, 909  at 30 Vdc
Maximum loop current (+, - wiring)	-	Uo = 30 Vdc, Io = 120 mA, Pi = 800 mW, Ci = 6.2 μF, Li = 110 μH
Inductor Circuit Maximum (Wiring 13)	-	Uo = 6.4 Vdc, Io = 42.6 mA, Po = 37.1 mW; Group II B: Co = 500 μF, Lo = 50 mH; Group II C: Co = 20 μF, Lo = 10 mH
EMC radiation	-	EMC Directive 89 / 336 / EEC, EN 61326:1997 / A1, 1998 / A2.2001

Pressure/Temperature Limits

Temperature sensors can be used in applications where process temperatures are within a certain range, and additional protection is required for high temperatures and pressures. For air and vapor applications, the fluid flow rate should be less than 45m/s; for liquid applications, a flow rate of 5m/s is recommended (700mm and 200mm for non-flow applications only). Before and after the addition of the protective sleeve, the product has different pressure and temperature limit ranges and there are areas where it cannot be used.